Jumo cti 750 инструкция на русском

Related Manuals for JUMO CTI-750

JUMO CTI-750

Inductive Conductivity Transmitter

Type 202756

B 20.2756.0

Operating Instructions

11.07/00452846

WARNING:

A sudden failure of the instrument or of a sensor connected to it could result in dangerous overdosing. Please take suitable precautionary measures for this case.

Please assist us to improve these operating instructions, where necessary.

Your comments will be appreciated.

Phone (06 61) 60 03-7 14

Fax (06 61) 60 03-6 05

All the nececssary settings are described in this manual. However, if any difficulties should arise during start-up, please do not carry out any unauthorized manipulations. You could endanger your righs under the instrument warranty!

Please contact the nearest subsidiary or the head office in such a case.

In case of technical questions

Service hotline:

Phone: (06 61) 60 03-3 00 oder (06 61) 60 03-6 53

Fax: (06 61) 60 03-88 13 00 oder (06 61) 60 03-88 16 53 e-mail: [email protected]

Resetting the LC display

If the brightness/contrast setting is such that the text in the display is not readable, the basic setting can be restored as follows:

Q Switch off the supply voltage.

Q Switch on the supply voltage and immediately keep the keys and held down.

Resetting the operating language to «English»

If the operating language has been set and you cannot understand the text of the display, the language can be set to «English» with the Administrator password 7485. Thereafter, the desired language can be set in ADMINISTRATOR LEVEL / DEVICE DATA / ….

Contents

1.1

1.2

Warning signs ………………………………………………………………………………….5

Note signs ……………………………………………………………………………………….5

2.1

2.2

3

3.1

3.2

Preface ……………………………………………………………………………………………6

Design of the JUMO CTI-750 ……………………………………………………………..7

Inductive conductivity measurement ……………………………….. 8

Area of application ……………………………………………………………………………8

Function ………………………………………………………………………………………….9

4.1

4.2

4.3

4.4

Nameplate ……………………………………………………………………………………..10

Type designation …………………………………………………………………………….11

JUMO CTI-750 as “Head-mounted transmitter” …………………………………11

JUMO CTI-750 as “Transmitter with separate sensor” ………………………..13

5.1

5.2

5.3

5.4

General ………………………………………………………………………………………….15

Dimensions / Process connections for head transmitter ………………………16

JUMO CTI-750 with separate sensor (split version) …………………………….18

Mounting examples …………………………………………………………………………22

6.1

Technical data for transmitter ……………………………………………………….24

7.1

General …………………………………………………………………………………………29

8.1

Function ………………………………………………………………………………………..32

9.1

9.2

Head-mounted transmitter or transmitter with separate sensor …………….33

Replacement sensor ……………………………………………………………………….33

Contents

10.1

Controls …………………………………………………………………………………………34

10.2

Principle of operation ………………………………………………………………………36

10.3

Principle of operation ………………………………………………………………………38

10.4

Measurement mode ………………………………………………………………………..39

10.5

Operator level …………………………………………………………………………………39

10.6

Administrator level ………………………………………………………………………….47

10.7

Calibration level ………………………………………………………………………………49

10.8

Dilution function ……………………………………………………………………………..50

11.1

General ………………………………………………………………………………………….54

11.2

Calibrating the relative cell constant ………………………………………………….54

11.3

Calibrating the temp. coefficient of the sample solution ………………………55

12.1

Cleaning the conductivity sensor ………………………………………………………63

13 Eliminating faults and malfunctions ……………………………….. 64

13.1

Checking the instrument ………………………………………………………………….64

14.1

Before configuration ………………………………………………………………………..70

1 Typographical conventions

1.1

Warning signs

Danger

This symbol is used when there may be danger to personnel if the instructions are ignored or not followed correctly!

Caution

This symbol is used when there may be damage to equipment or data if the instructions are ignored or not followed correctly!

1.2

Note signs

Note

This symbol is used when your special attention is drawn to a remark.

abc

1

✱

Footnote

Footnotes are remarks that refer to specific points in the text. Footnotes consist of two parts:

A marker in the text, and the footnote text.

The markers in the text are arranged as continuous superscript numbers.

Action instruction

This symbol indicates that an action to be performed is described.

The individual steps are marked by this asterisk.

Example:

✱ Remove crosspoint screws.

5

6

2 General

2.1

Preface

Please read these operating instructions before commissioning the instrument. Keep the manual in a place that is accessible to all users at all times.

Please assist us to improve these operating instructions, where necessary.

Your comments will be appreciated.

Phone +49 661 6003-0

Fax +49 661 6003-607 e-mail [email protected]

All necessary settings are described in this manual. However, if any difficulties should still arise during start-up, please do not carry out any unauthorized manipulations. You could endanger your rights under the instrument warranty!

Please contact the nearest subsidiary or the head office in such a case.

2 General

2.2

Design of the JUMO CTI-750

Examples

Version:

Transmitter combined with conductivity sensor,

Type 202756/xx…

(1)

(1)

(5)

(2)

(3)

(4)

Version:

Transmitter with separate sensor,

Type 202756/xx…

(1) Transmitter

(2) Process connection

(3) Temperature probe

(2)

(4)

(3)

(4) Inductive conductivity sensor

(5) With or without graphics LC display

7

8

3 Inductive conductivity measurement

3.1

Area of application

General

Brief description

The inductive measurement method permits largely maintenance-free acquisition of the specific conductivity, even in difficult media conditions.

Unlike the conductive measurement method, problems such as electrode decomposition and polarization do not occur.

The instrument is used for the measurement/control of conductivity or concentration in liquid media. It is particularly recommended for use in media where severe deposits of dirt, oil, grease or gypsum/lime precipitates are to be expected. The integrated temperature measurement enables fast and accurate temperature compensation, which is of particular importance when measuring conductivity. Additional functions, such as the combined changeover of measurement range and temperature coefficient, enable optimum application in CIP processes.

Two built-in switching outputs can be freely programmed to monitor limits for conductivity/concentration and/or temperature. It is also possible to assign alarm and control functions (dilution).

The instrument is operated either from the membrane keypad and plain-text graphics display (operator language can be changed over) or through the userfriendly PC setup program. Simply rotating the housing cover makes it possible to read the display, regardless of whether the installation is in horizontally or vertically arranged pipes. By using the setup program, the instrument configuration data for plant documentation can be saved and printed out. To prevent any tampering, the instrument can also be supplied without keypad or display. In this case, the setup program is needed for programming.

The JUMO CTI-750 is available either as a combined unit (transmitter and measuring cell together in one unit) or as a split version (transmitter and cell connected by cable). The split version is particularly suitable for plant subjected to strong vibration and/or significant heat radiation at the point of measurement, or for installation on sites that are difficult to access.

Typical areas of application

— CIP cleaning (CIP = Clean In Place/Process)

— concentration monitoring or dosing of chemicals

— food/beverage and pharmaceutical industries

— product monitoring (phase separation of product / product mix / water) in the beverage industry, breweries, dairies

— control (e.g. phase separation of detergent / rinsing water in cleaning processes, e.g. bottle cleaning plant, or for container cleaning)

3 Inductive conductivity measurement

3.2

Function

of the transmitter of the measuring cell

The JUMO CTI-750 transmitter has been designed for use on site. A rugged housing protects the electronics and the electrical connections from corrosive environmental conditions (enclosure IP67). As standard, the device has one analog signal output each for conductivity/concentration and temperature respectively. Further processing of the standard signals can take place in a suitable display/control device, or, for example, directly in a PLC.

The output signals are electrically isolated from one another and from the medium.

The conductivity is measured using an inductive probe. A sinusoidal a.c.

voltage feeds the transmitting coil. Depending on the conductivity of the liquid to be measured, a current is induced in the receiver coil. This current is proportional to the conductivity of the medium. The cell constant of the inductive probe depends on its geometry. The cell constant can also be affected by components in the immediate vicinity.

(1)

(4)

(2)

(5)

(1) Plastic body

(2) T-shaped flow channel

(3) Liquid loop

(3)

(4) Sample medium

(5) Pt100 temperature sensor

9

4.1

Nameplate

on the transmitter

JUMO GmbH & Co. KG

Fulda, Germany www.jumo.net

JUMO CTI-750

Typ: 202756/15-607-0000-82/000

VARTN: 20/00445843

F-Nr.: 00909467 01 0 0517 0001

on the connecting cable

(only with separate sensor)

F-Nr.: 00909467 01 0 0517 0001

For devices with a separate sensor (type code extensions (2) /60 or /65), the transmitter and detached sensor are matched to one another at the factory!

When connecting the components, please note that the serial number of the external sensor (marked on the label attached to the connecting cable) must match the serial number marked on the nameplate of the transmitter!

The date of manufacture is coded in the “F-Nr.” (serial number):

0517 means manufactured in year 2005 / calendar week 17

10

4 Instrument identification

4.2

Type designation

4.3

JUMO CTI-750 as “Head-mounted transmitter”

o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o x x x o o o o o o o o o o o o

202756

10

15

16

107

108

110

606

607

608

609

617

686

690

000

82

83

84

000

580

767

768

844

(1) Basic type

JUMO CTI-750

Inductive transmitter/switching device for conductivity/concentration and temperature

(2) Basic type extensions

head-mounted transmitter im in plastic housing, without display/keypad

1 head-mounted transmitter im in plastic housing, with display/keypad head-mounted transmitter in stainless steel housing, with display/keypad

(3) Process connection

stud thread G1 1/4A stud thread G1 1/2A stud thread G 2A screwed pipe connection DN40, DIN 11 851

(MK DN40, milk cone) screwed pipe connection DN50, DIN 11 851

(MK DN50, milk cone) screwed pipe connection DN65, DIN 11 851

(MK DN65, milk cone) screwed pipe connection DN80, DIN 11 851

(MK DN80, milk cone) clamp 2 1/2″

2

VARIVENT

®

DN40/50

3

SMS 2″

(4) Immersion length

see “Dimensions / Process connections

(head-mounted transmitter)”

(5) Electrical connection

cable glands

M12 plug/socket connectors

(instead of cable glands)

4 two M16 cable glands and one blanking plug

(6) Extra codes

5

no extra code

1 set M12 plug/socket connectors cell material PEEK cell material PVDF supply voltage 24 V AC x = standard o = option

11

4 Instrument identification

Order code

Order example

(1) (2) (3) (4) (5) (6)

/ /

202756 / 10 — 607 — 000 82 / 767 ,

(6)

, …

2

3

1

4

5

The PC setup program is required for programming the instrument, see accessories.

Assembly material (holding clamps) not part of supplied kit.

Only in conjunction with extra code 767 (measuring cell material PEEK).

If required, order extra code 580.

List extra codes in sequence, separated by commas.

12

4 Instrument identification

4.4

JUMO CTI-750 as “Transmitter with separate sensor”

202756

20

25

26

60

65

66

80

85

(1) Basic type

JUMO CTI-750

Inductive transmitter/switching device for conductivity/concentration and temperature

(2) Basic type extensions

transmitter in plastic housing, without display/keypad (without sensor)

1 transmitter in plastic housing, with display/keypad

(without sensor)

2 transmitter in stainless steel housing, with display/keypad

(without sensor)

2 transmitter in plastic housing, without display/keypad including sensor (cable length: 10 m)

1 transmitter in plastic housing, with display/keypad including sensor (cable length: 10 m) transmitter in stainless steel housing, with display/keypad including sensor (cable length: 10 m) replacement sensor with 10 meter cable, for transmitter in plastic housing, without transmitter

2, 3 replacement sensor with 10 meter cable, for transmitter in stainless steel housing, without transmitter

2, 3 x x x x o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o

000

107

108

110

606

607

608

609

617

686

690

0000

0500

1000

1500

2000 xxxx

(3) Process connection

not available stud thread G1 1/4A stud thread G1 1/2A stud thread G2A

DN40 screwed pipe fitting, DIN 11 851

DN50 screwed pipe fitting, DIN 11 851

(MK DN40, milk cone)

(MK DN50, milk cone)

DN65 screwed pipe fitting, DIN 11 851

DN80 screwed pipe fitting, DIN 11 851

(MK DN65, milk cone)

(MK DN80, milk cone) clamp 2 1/2″

3

VARIVENT

®

DN40/50

4

SMS 2″

(4) Immersion length (see “Dimensions separate sensor”)

5 not present

0 500 mm

1000 mm

1500 mm

2000 mm special length (in grid of 250 mm; e.g. 0250; 0750; 1250; 1750) o o o o o o o o o o o o x 21

82

83

84

(5) Electrical connection

fixed cable with M12 socket connector on separate sensor cable glands on the operating unit

M12 plug/socket connectors on operating unit

3

Two screwed cable glands M16 and one dummy plug

Continued, see next page

13

4 Instrument identification

x x x x x o o o o o o x x x o o o o o o o

000

580

767

768

844

(6) Extra codes

7

no extra code

1 set M12 plug/socket connectors cell material PEEK cell material PVDF supply voltage 24 V AC x = standard o = option

Order code

Order example

(1) (2) (3) (4) (5) (6)

/ /

202756 / 65 — 607 — 0000 82 / 767

(6)

, …

4

5

6

7

1

2

3

The PC setup program is required for programming the instrument, see accessories.

An equalization set is indispensable for start-up. If not available, please order (see accessories).

Fixing items (union/ring nuts, mounting brackets, holding clamps) are not included in delivery.

If required, please include in order, see accessories.

Only in conjunction with extra code 767 (measuring cell material PEEK).

Only in conjunction with extra code 768 (measuring cell material PVDF).

If required, order M12 connector/ sockets, extra code 580.

List extra codes in sequence, separated by commas.

14

5 Mounting

5.1

General

Installation site

Make sure that the site is readily accessible, for calibration at a later time.

The fixing must be secure and free from vibration.

Avoid direct sunlight!

Take care that there is adequate flow through and around the sensor (1)!

If the device is to be mounted in a pipeline, there must be at least 20 mm clearance between the sensor and the wall of the pipe.

If it is not possible to achieve this minimum clearance, then a limited compensation can be made through the “Mounting factor” parameter.

For submerged operation in basins, a location must be chosen that is representative of the typical conductivity or concentration.

Operating position

The JUMO CTI-750 can be mounted in any position.

(1)

Screwing in and unscrewing the detached sensor

The cable must not be twisted!

Avoid putting tension on the cable. In particular, avoid tugging it.

Sensor details

St. steel sleeve: Material 1.4571

Seal: FPM

15

5 Mounting

5.2

Dimensions / Process connections for head transmitter

Installation variations

Version with process connection

107 = stud thread G1 1/4A

108 = stud thread G1 1/2A

110 = stud thread G2A

Version with process connection -607

MK DN50

16

Version with process connection -617 clamp 2

1

/

2

«

(retaining clip not included in delivery)

Version with process connection -686

VARIVENT

®

DN50

(retaining clip not included in delivery)

Version with process connection -690

SMS 2″

5 Mounting

17

5 Mounting

5.3

JUMO CTI-750 with separate sensor (split version)

Transmitter head

Drilling jig for wall-mounting

18

5 Mounting

Sensor component

M12 socket

(PBT / PA)

Cabel gland

M16 (PA)

Version with process connection

107 = stud thread G1 1/4A

108 = stud thread G1 1/2A

110 = stud thread G2A

Split version with process connection -607

MK DN50

(union nut not included in delivery)

M12 socket

(PBT / PA)

Cable gland

M16 (PA)

Split version with process connection -617 clamp 2

1

/

2

«

(retaining clip not included in delivery)

Split version with process connection -686

VARIVENT

®

DN50

(retaining clip not included in delivery)

Process connection 686

(1.4301)

19

5 Mounting

Split version with process connection -690

SMS 2″

(union nut not included in delivery)

20

5 Mounting

5.3.1

Separate sensor as submersible version

M12 socket

(PBT/PA)

Cable gland

System of protection

IP68 up to 0,2 bar) according EN 60529

(PA) fixing screw flange movab

ø18

ø100

ø165

Optional accessories:

Flange DN 32, sales no. 20/00083375

Submerged pipe (PVDF)

ø40 fixing screw flange movable

ø18

ø125

ø165

Optional accessories:

Flange DN 50, sales no. 20/00083376

Shouldered version with process connection 706

Submersible version

(pipe clamps not part of delivery)

21

5 Mounting

5.4

Mounting examples

Weld-on threaded pipe adaptor

DN50, DIN 11 851

(matching part for process connection

-607)

Sales No. 20/00085020

22

5 Mounting

Tee, VARIVENT, DN50

(e.g. 1.4301)

(to be provided by the plant operator; not supplied by JUMO)

5.4.1

Pipe-mounting kit

30…50 mm

(2)

(1)

(1)

The screws (1) M5 x 30 are used with pipe diameters from 30 to 40 mm.

The screws (2) M5 x 40 are used with pipe diameters from 40 to 50 mm.

The pipe-mounting kit is also suitable for horizontal pipes.

23

6 Instrument description

6.1

Technical data for transmitter

6.1.1

General

Permissible ambient temperature

(transmitter)

Permissible storage temperature

(transmitter)

Enclosure protection

(transmitter)

Housing

Weight

A/D converter

Supply

resolution: 15-bit sampling time: 500 msec = 2 measurements/sec for operation on SELV or PELV circuits standard:

19 — 31 V DC (24 V DC nominal), with reverse-polarity protection ripple: < 5% power consumption with display:

≤ 3 W power consumption without display:

≤ 2.6 W with extra code 844:

24 V AC ±10%

Rating of the solid-state relays

I

U < 50 V AC/DC

≤ 200 mA

Electrical connection

plug-in screw terminals 2.5 mm

2

or M12 plug/socket connectors

Display (option)

graphics LCD with background lighting; adjustable contrast dimensions: 62 x 23 mm

-5 to +50°C max. 93% relative humidity, no condensation

-10 to +65°C max. 93% relative humidity, no condensation

IP67 polycarbonate depending on version and process connection approx. 0.3 — 2 kg

24

6 Instrument description

6.1.2

Conductivity/concentration transmitter

Concentration measurement

(implemented in the device software)

— NaOH (caustic soda)

0 — 15 % by weight or 25 — 50 % by weight

— HNO

3

(nitric acid); check chemical resistance of the sensor !

0 — 25 % by weight or 36 — 82 % by weight

— customer-specific concentration curve freely programmable through the setup program (see “special functions”) adjustable: 0 — 999 days (0 = off)

Calibration timer

Output signal

Conductivity/ concentration

Burden

0 — 10 V / 10 — 0 V

2 — 10 V / 10 — 2 V

0 — 20 mA / 20 — 0 mA

4 — 20 mA / 20 — 4 mA

The output signal is freely scalable.

≤ 500Ω for current output

≥ 2kΩ for voltage output

≤ 0.1%/°C

Ambient temperature error

Analog output for “Alarm”

Measuring ranges

Low (0 mA / 0 V / 3.4 mA / 1.4 V) or

High (22.0 mA / 10.7 V) or a value with a fixed setting (safe value)

Four ranges can be selected.

One of these ranges can be activated via an external switch or a PLC.

Measurement ranges

Transmitter

Tolerance

(in % of range span)

0 — 500 µS/cm

0 — 1000 µS/cm

0 — 2000 µS/cm

0 — 5000 µS/cm

0 — 10 mS/cm

0 — 20 mS/cm

0 — 50 mS/cm

0 — 100 mS/cm

0 — 200 mS/cm

0 — 500 mS/cm

0 — 1000 mS/cm

0 — 2000 mS/cm

1

≤0.5%

1

not compensated for temperature

Note:

The overall tolerance is made up of the tolerance of the transmitter + the tolerance of the sensor.

25

6 Instrument description

6.1.3

Temperature transmitter

Temperature acquisition

manually -20.0 to 25.0 to 150°C/°F or automatically

-20 to 150°C/°F

Temperature measurement range

Characteristic

Accuracy

Ambient temperature error

Output signal for temperature

linear

≤ 0.5% of range

≤ 0.1%/°C

Burden

Analog output for “Alarm”

0 — 10 V / 10 — 0 V

2 — 10 V / 10 — 2 V

0 — 20 mA / 20 — 0 mA

4 — 20 mA / 20 — 4 mA

The output signal is freely scalable.

≤ 500Ω for current output

≥ 2 kΩ for voltage output

Low (0 mA / 0 V / 3.4 mA / 1.4 V) or

High (22.0 mA / 10.7 V) or a value with a fixed setting (safe value)

6.1.4

Temperature compensation

Reference temperature

15 to 30

°

C, adjustable

Temperature coefficient

0.0 to 5.5 %/°C, adjustable

Compensation range

Function

-20 to 150°C

— Linear compensation (constant temperature coefficient).

This type of compensation can be used with normal water with an acceptable level of accuracy. The temperature coefficient used is then about 2,2 %/K.

— Natural water (DIN EN27888 or ISO 7888 as the case may be).

In this case, a so-called non-linear temperature compensation is used.

26

6 Instrument description

According to the above standard, the corresponding type of compensation can be applied in the case of natural ground water, mountain spring water and surface warter.

The conductivity of the water is compensated in the range from 0°C to

36°C.

— non-linear (learning function, see special functions)

Here, the actual graph of the temperature coefficient during a heating-up or cooling-down process is determined by the transmitter.

6.1.5

Sensor

Material

PEEK (polyether ether ketone) or

PVDF (polyvinylidene fluoride)

Note:

Temperature, pressure and sample medium affect the operating life of the cell

Temperature of the sample medium

-10 to +120°C briefly 140°C (sterilization)

Pressure

10 bar max.

Tolerance

(in % of range span)

≤ 1%

Measurement range

Sensor

0 — 500 µS/cm

0 — 1000 µS/cm

0 — 2000 µS/cm

0 — 5000 µS/cm

0 — 10 mS/cm

0 — 20 mS/cm

0 — 50 mS/cm

0 — 100 mS/cm

0 — 200 mS/cm

0 — 500 mS/cm

0 — 1000 mS/cm

0 — 2000 mS/cm

1

1

not compensated for temperature

≤ 0.5%

≤ 1%

27

7 Installation

The electrical connection must only be carried out by properly qualified personnel!

❏ The choice of cable, the installation and the electrical connection must conform to the requirements of VDE 0100 “Regulations on the Installation of Power Circuits with Nominal Voltages below 1000 V” or the appropriate local regulations.

❏ The electrical connection must only be carried out by qualified personnel.

❏ If contact with live parts is possible while working on the device, it must be completely disconnected from the electrical supply.

❏ The electromagnetic compatibility conforms to EN 61 326.

❏ Run input, output and supply cables separately and not parallel to one another.

❏ The device is not suitable for use in areas with an explosion hazard

(Ex areas).

❏ Apart from faulty installation, incorrect settings on the instrument may also affect the proper functioning of the subsequent process or lead to damage.

28

7 Installation

7.1

General

Opening the operating unit

It is only necessary to open the housing for devices with cable glands.

Devices with M12 plug/socket connectors should not be opened!

(1)

Connecting up the cables

✱ Remove four screws (1) and take off the cover

(1)

(2)

To connect the single conductors, pull off the pluggable screw terminals (1) in the operating unit.

Pass the connecting cables through the cable glands (2).

29

7 Installation

Wiring

For devices with a separate sensor (type code extensions (2) /60 or /65), the transmitter and detached sensor are matched to one another at the factory!

When connecting the components, please note that the serial number of the external sensor (marked on the label attached to the connecting cable) must match the serial number marked on the nameplate of the transmitter!

30

Caution:

On devices with a separate sensor and M12 plug/socket connectors, the screw terminals are sealed inside the device.

Removal of this sealing will invalidate the warranty!

Connections for the transmitter

Connection

Supply

standard: supply voltage

19 — 31 V DC

(with reverse-polarity protection) with extra code 844:

24 V AC

Outputs

Analog signal output:

Conductivity/concentration

0 — 20 mA resp. 20 — 0 mA or

4 — 20 mA resp. 20 — 4 mA or

0 — 10 V resp. 10 — 0 V or

2 — 10 V resp. 10 — 2 V

(electrically isolated)

Analog signal output:

Temperature

0 — 20 mA resp. 20 — 0 mA or

4 — 20 mA resp. 20 — 4 mA or

0 — 10 V resp. 10 — 0 V or

2 — 10 V resp. 10 — 2 V

(electrically isolated)

Switching output K1

(floating)

Status indication

LED K1

Switching output K2

Status indication

LED K2

Binary inputs

Binary input E1

Binary input E2

7 Installation

Screw terminals

Conn./pin

1 L+

2 L-

I / 1

I / 2

3 +

4 —

5+

6-

I / 3

I / 4

II / 1

II / 2

7 8

9

11

10

12

13 14

11

12

13

14

7

8

9

10

II / 3

II / 4

II / 5

II / 6

II / 7

I / 5

II / 8

I / 5

31

8 Setup program

8.1

Function

Configurable parameters

The setup program, which is available as an option, can be used for easy adaptation of the transmitter to specific requirements.

— Setting the measurement range and the range limits.

— Setting the response of the output to an out-of-range signal.

— Setting the functions of the switched outputs K1 and K2.

— Setting the functions of the binary inputs E1 and E2.

— Setting up special functions (e.g. the dilution function).

— Setting up a customer-specific characteristic,

— etc.

Data transmission from or to the transmitter can only take place

when it is connected to the electrical supply, see Chapter 7

“Installation”, page 28ff.

Connection

The setup interface is not electrically isolated. When connecting the PC interface cable, it is therefore absolutely essential to ensure that either the supply of the transmitter or of the PC is not electrically earthed (for instance, use a battery-powered notebook).

Plug-on adapter

(included in setup set)

Interface cable

(95/00350260)

SETUP

9

10

11

12

13

14

1

2

3

4

5

6

7

8

1 2 3 4 5 6 e-cond.

L+

L-

+

e-temp.

K1

K2

E1

E2 b a b a

+

a b a b

7 8 9 10 11 12 13 14

Supply

32

9 Commissioning

The transmitter has been tested in the factory for fault-free functioning, and is delivered ready for operation.

9.1

Head-mounted transmitter or transmitter with separate sensor

✱ Mounting the instrument, see “Mounting”, page 15.

✱ Connecting the instrument, see “Installation”, page 28.

For devices with a separate sensor (type code extensions (2) /60 or /65), the transmitter and detached sensor are matched to one another at the factory!

When connecting the components, please note that the serial number of the external sensor (marked on the label attached to the connecting cable) must match the serial number marked on the nameplate of the transmitter!

9.2

Replacement sensor

✱ Connect up the sensor as described in the operating instructions for the replacement sensor.

✱ Calibrate the sensor as described in the operating instructions for the replacement sensor.

33

10 Operation

10.1 Controls

JUMO CTI-750 without

LC display

(5)

JUMO CTI-750 with

LC display

(5)

(4)

(1) Graphics LC display, back-lit

(2)

PGM

key confirm entries/select menu

(3)

EXIT

key cancel entry without saving / cancel calibration go back one menu level

(4) key increase value / step on in selection.

key reduce value / step on in selection.

(1)

(2)

(3)

(5) LEDs K1 and K2 show the states of the switched outputs.

In normal operation, the LED lights up if the corresponding output is active.

If the pulse function is active, the LED only indicates the status.

The K1 LED blinks during calibration.

In fault condition, the LED K1 and

LED K2 blink.

34

LC display

(11)

(1) (2) (3) (4) (5) (6)

10 Operation

(7)

(8)

(10)

(1)

(2)

(3)

(4)

(5)

(6)

Output K1 is active

Output K2 is active

Binary input 1 is activated

Binary input 2 is activated

Keypad is inhibited

Device status (indications)

— Alarm (e.g overrange)

— Calib blinking (calibration timer has run down

— Calib (customer calibration is active)

(9)

(7)

(8)

(9)

(10)

(11)

Output mode

— Hand (manual operation)

— Hold (hold operation)

Conductivity/concentration measurement

Unit for conductivity/ concentration measurement

Temperature of the medium

Device status e.g.

— Measurement (normal)

— Dilution (dilution function)

— Dosing (dilution function)

— Inhibited (dilution function)

— Calibration status

35

10 Operation

10.2 Principle of operation

10.2.1 Operation in levels

Measurement mode, see Chapter 10.4 «Principle of operation» page 39

OPERATOR LEVEL, see chapter 10.5 «Operator level», page 39.

INPUT CONDUCTIVITY MEASUREMENT RANGE 1…4

TEMPERATURE COMPENSATION

TEMP. COEFFICIENT 1…4

REFERENCE TEMPERATURE

REL. CELL CONSTANT

MOUNTING FACTOR

CONCENTR. MEASUREMENT

CONCENTR. RANGE

OFFSET

FILTER TIME

CALIBR. INTERVAL

OUTPUT CONDUCTIVITY

INPUT TEMPERATURE

SIGNAL TYPE

SCALING START 1…4

SCALING END 1…4

IN CASE OF ALARM

DURING CALIBRATION

SAFETY VALUE

MANUAL OPERATION

MANUAL VALUE

UNIT

MEAS. VALUE ACQUISITION

MANUAL SPECIFICATION

OFFSET

FILTER TIME

OUTPUT TEMPERATURE

OUTPUT BINARY 1

OUTPUT BINARY 2

INPUT BINARY 1

INPUT BINARY 2

DILUTION

SIGNAL TYPE

SCALING START

SCALING END

IN CASE OF ALARM

DURING CALIBRATION

SAFETY VALUE

MANUAL OPERATION

MANUAL VALUE

FUNCTION

LIMIT VALUE

HYSTERESIS

DISTANCE

MANUAL OPERATION

DURING HOLD

IN CASE OF ALARM / CALIBR.

SWITCH-ON DELAY

SWITCH-OFF DELAY

PULSE DURATION

FUNCTION

LIMIT VALUE

HYSTERESIS

DISTANCE

MANUAL OPERATION

DURING HOLD

IN CASE OF ALARM / CALIBR.

SWITCH-ON DELAY

SWITCH-OFF DELAY

PULSE DURATION

FUNCTION

FUNCTION

REDUCTION

DOSING TIME

LOCK TIME

36

10 Operation

DEVICE DATA LANGUAGE

CONTRAST

LIGHTING

INVERTING LCD

ADMINISTR. LEVEL, see chapter 10.6, «Administrator level», page 47

Password

PARAMETER LEVEL, see chapter 10.6.1 «Parameter level» page 48.

INPUT CONDUCTIVITY

OUTPUT CONDUCTIVITY

INPUT TEMPERATURE

OUTPUT TEMPERATURE

OUTPUT BINARY 1

OUTPUT BINARY 2

INPUT BINARY 1

INPUT BINARY 2

DILUTION FUNCTION

DEVICE DATA

ENABLE LEVEL, see chapter 10.6.2 «Enable level» page 48.

INPUT CONDUCTIVITY

OUTPUT CONDUCTIVITY

INPUT TEMPERATURE

OUTPUT TEMPERATURE

OUTPUT BINARY 1

OUTPUT BINARY 2

INPUT BINARY 1

INPUT BINARY 2

DEVICE DATA

CALIBRATION ENABLE, see chapter 10.6.3 «Calibration enable», page

39.

REL. CELL CONSTANT.

TEMP. COEFF. LINEAR

TEMP. CO. NON-LINEAR

CALIBRATION LEVEL, see chapter 10.7 «Calibration level», page 52.

REL. CELL CONSTANT

TEMP. COEFF. LINEAR

TEMP. CO. NON-LINEAR

DILUTION FUNCTION, see chapter 10.8 «Dilution function», page 50

REDUCTION

DOSING TIME

LOCK TIME

37

10 Operation

10.3 Principle of operation

Operation in levels

38

10 Operation

10.4 Measurement mode

Representation

In measurement mode, the conductivity is shown (compensated for the reference temperature) or the concentration and temperature of the medium being measured.

(1)

(3)

(2)

(1) MEASUREMENT -> Measurement mode

(2) 20.5°C -> Temperature of the sample medium

(3) 203 mS/cm -> Conductivity of the medium (compensated for the reference/comparison temperature – usually 25°C)

10.5 Operator level

All the parameters that have been enabled by the administrator (administrator level) can be edited in this level. All other parameters (marked by a key ) can only be read.

✱ Press the

PGM

key for at least 3 seconds.

✱ Select OPERATOR LEVEL.

39

10 Operation

10.5.1 CONDUCTIVITY IN (conductivity input)

RANGE 1 — 4

1

0 — 500 µS/cm

0 — 1000 µS/cm

0 — 2000 µS/cm

0 — 5000 µS/cm

0 — 10 mS/cm

0 — 20 mS/cm

0 — 50 mS/cm

0 — 100 mS/cm

0 — 200 mS/cm

0 — 500 mS/cm

0 — 1000 mS/cm

0 — 2000 mS/cm UNC

2

1

Measurement ranges 2, 3 and 4 are only used if

BINARY INPUT is configured to RANGE/TEMPCO.

2

This measurement range is not temperature-compensated.

TEMP. COMPENSATION

LINEAR

NON-LINEAR (see “Non-linear temperature coefficient (ALPHA)”, page 58)

NATURAL WATER (permissible temperature range 0 to 36°C as per EN 27 888)

TEMP. COEFFICIENT 1 — 4

1

0 — 2.20 — 5.5%

1

Ranges 2, 3 and 4 are only used if

BINARY INPUT is configured to RANGE/TEMPCO.

REFERENCE TEMP.

15.0 to 25.0 to 30°C

CELL CONSTANT

2.00 to 6.80 to 10.0 1/cm

A check or alteration is only necessary, if a replacement sensor (basic type extension 80) has been connected to the transmitter with separate sensor.

The cell constant is printed on the replacement sensor (K=x,xx).

REL. CELL CONSTANT

80.0 — 100.0 — 120%

40

10 Operation

MOUNTING FACTOR

80.0 — 100.0 — 120%

If it is not possible to achieve the minimum clearance of 20 mm between the sensor and the outer wall, then a limited compensation can be made through this parameter.

CONC. MEAS. TYPE

NO FUNCTION

NaOH

HNO3

CUSTOMIZED (values can only be entered by using the optional setup program)

CONC. MEAS.

RANGE

For HNO

3

0 — 25 % BY WEIGHT

36 — 82 % BY WEIGHT

For NaOH

0 — 15 % BY WEIGHT

25 — 50 % BY WEIGHT

OFFSET

-100 to 0 to +100 mS/cm (+/- 10% of range)

FILTER TIME

00:00:00 — 00:00:01 — 00:00:25 H:M:S

CALIB. INTERVAL

0— 999 DAYS (0 = switched off)

41

10 Operation

10.5.2 CONDUCTIVITY OUT (conductivity output)

SIGNAL TYPE

0 — 20 mA

4 — 20 mA

20 — 0 mA

20 — 4 mA

0 — 10 V

2 — 10 V

10 — 0 V

10 — 2 V

SCALING START 1 — 4

1

0 µS/cm = 4 mA

Can be set in the range being used, depending on the signal type.

1

Ranges 2, 3 and 4 are only used if

BINARY INPUT is configured to RANGE/TEMPCO.

SCALING END 1 — 4

1

1000 µS/cm = 20 mA

Can be set in the range being used, depending on the signal type.

1

Ranges 2, 3 and 4 are only used if

BINARY INPUT is configured to RANGE/TEMPCO.

DURING

ALARM

LOW (0 mA / 0 V / 3.4 mA / 1.4 V)

HIGH (22 mA / 10.7 V)

SAFE VALUE (depending on the signal type)

DURING CALIBRATION

MOVING

FROZEN

SAFE VALUE

SAFE VALUE

MANUAL MODE

OFF

ON

MAN. VALUE

0.0 — 4.0 — 22.0 mA (depending on the signal type)

0 — 10.7 V

0.0 — 4.0 — 22.0 mA (depending on the signal type)

0 — 10.7 V

42

10.5.3 TEMPERATURE IN

DIMENS. UNIT

°C

°F

MEAS. MODE

SENSOR

MANUAL

MANUAL VALUE

-20.0 to 25.0 to 150°C

OFFSET

-15.0 to 0.0 to 15.0°C

FILTER TIME

00:00:00 — 00:00:01 — 00:00:25 H:M:S

10.5.4 TEMPERATURE OUT

SIGNAL TYPE

0 — 20 mA

4 — 20 mA

20 — 0 mA

20 — 4 mA

0 — 10 V

2 — 10 V

10 — 0 V

10 — 2 V

SCALING START

-20.0°C = 4 mA (depending on the signal type)

SCALING END

+200.0°C = 20 mA (depending on the signal type)

DURING ALARM

LOW (0 mA / 0 V / 3.4 mA / 1.4 V)

HIGH (22 mA / 10.7 V)

SAFE VALUE (depending on the signal type)

10 Operation

43

10 Operation

DURING CALIBRATION

MOVING

FROZEN

SAFE VALUE

SAFE VALUE

0.0 — 4.0 — 22.0 mA (depending on the signal type)

0 — 10.7 V

MANUAL MODE

OFF

ON

MAN. VALUE

0.0 — 4.0 — 22.0 mA (depending on the signal type)

0 — 10.7 V

10.5.5 BINARY OUTPUT 1 and BINARY OUTPUT 2

FUNCTION

NO FUNCTION

MIN. CONDUCT.

MAX. CONDUCT.

LK1 CONDUCT.

LK2 CONDUCT.

MIN. TEMP.

MAX. TEMP.

LK1 TEMP.

LK2 TEMP.

CALIB. TIMER

ALARM

MAX limit comparator MIN limit comparator

44

10 Operation

LK1 alarm window LK2 alarm window

Pulse contact

Trigger condition longer than pulse duration

Pulse contact

Trigger condition shorter than pulse duration

LIMIT

-20.0 — 999.0 (depending on the function, see above)

HYSTERESIS

0.0 — 1.0 — 999.0 (depending on the function, see above)

SPACING

0.0 — 999.0 (depending on the function, see above)

MANUAL MODE

OFF

ON

FOR HOLD

INACTIVE

ACTIVE

FROZEN

FOR ALARM / CALIB.

INACTIVE

ACTIVE

FROZEN

45

10 Operation

ON-DELAY

00:00:00 — 01:00:00 H:M:S

OFF-DELAY

00:00:00 — 01:00:00 H:M:S

PULSE DURATION

00:00:00 — 01:00:00 H:M:S (see above: “Function, Pulse contact”)

10.5.6 BINARY INPUT 1 and BINARY INPUT 2

FUNCTION

NO FUNCTION

HOLD/LOCK KEY

RANGE/TEMPCO.

DILUTION

Setting parameters

Range/ temperature coefficient changeover

Range1/TC1

Range2/TC2

Range3/TC3

Range4/TC4

Key inhibit

Hold function

Start dilution function

Stop dilution function

Binary input 1

open closed open closed closed

X close (0 —1 edge) open

Binary input 2

open open closed closed

X closed open close (0 —1 edge)

10.5.7 DILUTION

(description: see “Dilution function”, page 50)

REDUCE

0 — 10 — 50%

DOSING TIME

0:00:00 — 00:01:00 — 18:00:00 H:M:S

LOCK TIME

0:00:00 — 00:01:00 — 18:00:00 H:M:S

46

10 Operation

10.5.8 INSTRUMENT DATA

LANGUAGE

GERMAN

ENGLISH

FRENCH

SPANISH

POLISH

SWEDISH

ITALIAN

PORTUGUESE

DUTCH

RUSSIAN

Entering the password 7485 in the administrator level will reset the operating language to English.

CONTRAST

0 — 6 — 11

LIGHTING

OFF

ON

IF OPERATED

(approx. 50 sec after the last key operation: the lighting will be switched off)

LCD INVERSE

OFF

ON

10.6 Administrator level

— All parameters can be edited (altered) in this level.

— In this level, you can also define which parameters can be edited (altered) by a “normal” user, and/or which calibration actions are permitted.

Editable parameters can be edited in the operator level.

Non-editable parameters are marked in the operator level by a key symbol

You can access the administrator level as follows:

✱ Press the

PGM

key for at least 3 seconds.

✱ Use the

or key to select ADMINISTRATOR LEVEL.

✱ Use

or to enter the password 300.

✱ Press the

PGM

key.

47

10 Operation

Levels within the administrator level

10.6.1 Parameter level

The administrator can edit all parameters for the operator level in this level.

The structure “Parameter level” within the administrator level is identical to the operator level,

see “Operator level”, page 39 and the following.

10.6.2 Enable level

In this level, the administrator can define which parameters can be altered or edited by the operator in the operator level.

The available options are READ ONLY and EDIT.

The structure “Parameter level” within the administrator level is identical to the operator level,

see “Operator level”, page 39 and the following.

10.6.3 Calibration enable (CALIB. ENABLE)

In this level, the administrator can define whether the operator can calibrate or alter

— the relative cell constant

— the linear temperature coefficient

48

10 Operation

— the non-linear temperature coefficient.

10.7 Calibration level

All the calibrations that have been enabled by the administrator (administrator level) can be carried out in this level.

✱ Press the

PGM

key for at least 3 seconds.

✱ Use the

or key to select CALIBRATION LEVEL.

10.7.1 REL. CELL CONSTANT (relative cell constant)

If this function has been enabled by the administrator, then the operator can calibrate the relative cell constant of the JUMO CTI-750 here;

see “Calibrating the relative cell constant”, page 54.

10.7.2 TEMPCO LINEAR (linear temperature coefficient)

If this function has been enabled by the administrator, then the operator can calibrate the JUMO CTI-750 for liquids with a linear temperature coefficient;

see “Linear temperature coefficient (ALPHA)”, page 55.

10.7.3 TEMPCOMP NON-LIN. (non-linear temperature coefficient)

If this function has been enabled by the administrator, then the operator can calibrate the JUMO CTI-750 for liquids with a non-linear temperature coefficient;

see “Non-linear temperature coefficient (ALPHA)”, page 58.

49

10 Operation

10.8 Dilution function

Brief description

Addition of biocide

For cooling water, the conductivity is used to deduce the total salt content.

If a conductivity limit is reached (at the maximum permissible salt content/ concentration), then the cooling water must be diluted. A dilution valve is opened, the concentrated water flows out, and is replaced by fresh water.

When the conductivity of the cooling water has fallen below the limit, the dilution valve is closed again.

A biocide is added to the cooling water, to prevent biological growth in the cooling system. There is no ideal setting for the amount used and the timing of the biocide dosing. In most cases, the dosing time is used as the controlled variable. The dosing quantity is therefore defined by the pumping rate and duration (system-specific). The success of the biocide treatment must be checked at regular intervals.

Dilution before biocide addition

If a biocide that increases conductivity is added to the cooling water, this could increase the conductivity to beyond the limit. This would cause the dilution valve to be opened, and a portion of the added biocide would be discharged into the waste water (possibly contravening regulations!).

To prevent this, the conductivity in the cooling system is reduced by dilution to, for example, 10% below the limit, before the biocide is added. The dilution valve is then temporarily blocked.

Dilution inhibit

After adding the biocide, the dilution should be inhibited for a while, until the biocide that is present in the cooling system is mostly decomposed (observe the statutory regulations!).

Implementation with the

JUMO CTI-750

— The dilution function is only available in the “Conductivity measurement” mode – not for concentration measurement.

— When the dilution function is activated, all the parameters that are irrelevant for this function are switched off.

— The dilution function can be started through binary input 1 and stopped

through binary input 2, see “BINARY INPUT 1 and BINARY INPUT 2”, page

46.

The dilution function can also be stopped by using the

EXIT

key.

— The present status of the dilution function will be shown in the display.

— The dilution valve is controlled by output K1.

— The addition of biocide valve is controlled by output K2.

— After dilution, K1 goes to the configured hold state (dilution inhibit).

50

10 Operation

— The dilution factor can be adjusted through binary input 1 over a range

1 — 50% below the limit value. The preset value is 10% below the limit.

10.8.1 Stop dilution

All the parameters are system-dependent, and must be adjusted to suit system requirements.

✱ Press the

PGM

key for at least 3 seconds.

✱ Use the

or key to select OPERATOR LEVEL; use the

PGM

key to confirm the selection.

✱ Use the

or key to select BINARY INPUT; use the

PGM

key to confirm the selection.

✱ Use the

or key to select DILUTION; use the

PGM

key to confirm the

51

10 Operation

selection.

✱ Change to the operator level, using the

EXIT

key.

✱ Use the

key to select DILUTION.

✱ Confirm the selection with the

PGM

key.

✱ Use the

or key to set the dilution factor in the range from

1 — 10 — 50% below the limit value.

✱ Confirm the selection with the

PGM

key.

✱ Use the

or key to select DOSING TIME; use the

PGM

key to confirm the selection.

✱ Set the dosing time with the

and keys in the range from

0:00:00 — 00:01:00— 18:00:00 H:M:S.

✱ Confirm the setting with the

PGM

key.

✱ Use the

or key to select LOCK TIME; use the

PGM

key to confirm the

52

10 Operation

selection.

✱ Set the lock time with the

or key in the range from

0:00:00 — 00:01:00— 18:00:00 H:M:S.

✱ Confirm the setting with the

PGM

key.

If there is an interruption in the supply voltage during dilution, the function will be canceled.

The dilution function will have to be restarted if it is to be continued.

53

11 Calibration

11.1 General

The device offers various calibration options to increase the precision.

The conductivity sensor should be cleaned and calibrated at regular intervals, depending on the medium being measured.

The K1 LED blinks during calibration.

11.2 Calibrating the relative cell constant

In order to meet enhanced demands for precision, the cell constant must first be calibrated.

Requirements

— The supply voltage for the JUMO CTI-750 must be present.

see Chapter 7 “Installation”, page 28ff.

— The sensor must be connected to the transmitter (applies to the split version).

— The transmitter is in the measurement mode.

✱ Immerse the conductivity sensor in a reference solution with a known conductivity.

The temperature of the sample solution must remain constant during calibration!

✱ Press the

PGM

key for at least 3 seconds.

✱ Use the

or key to select CALIBRATION LEVEL; use the

PGM

key to confirm the selection.

54

11 Calibration

✱ Use the

or key to select REL. CELL CONSTANT; use the

PGM

key to confirm the selection.

✱ When the measurement is stable, press the

PGM

key.

✱ Use the

or key to correct the indicated uncompensated conductivity to match the known value for the reference solution.

The relative cell constant calculated by the JUMO CTI-750 will be displayed.

✱ To accept the relative cell constant that has been determined -> press the

PGM

key for at least 3 seconds or to reject the value -> press the

EXIT

key.

The transmitter is in the calibration menu.

✱ Press the

EXIT

key;

The transmitter is now in the measurement mode, and shows the compensated conductivity of the reference solution.

11.3 Calibrating the temp. coefficient of the sample solution

11.3.1 Linear temperature coefficient (ALPHA)

The conductivity of any sample solution will change according to its individual temperature coefficient.

We therefore recommend carrying out a calibration of the temperature coefficient.

Requirements

— The supply voltage for the JUMO CTI-750 must be present.

55

11 Calibration

see Chapter 7 “Installation”, page 28ff.

— The sensor must be connected to the transmitter (applies to the split version).

— The transmitter is in the measurement mode.

✱ Immerse the conductivity sensor in a sample of the solution to be measured.

✱ Press the

PGM

key for at least 3 seconds.

✱ Use the

or key to select CALIBRATION LEVEL; use the

PGM

key to confirm the selection.

✱ Use the

or key to select TEMPCO LINEAR; use the

PGM

key to confirm the selection.

✱ Use the

or key to enter the working temperature; confirm with the

PGM

key.

The working temperature must be at least 5°C above or below the reference temperature (25.0°C).

56

11 Calibration

(1)

(2)

(3)

The LC display now shows

— at top (1): the selected working temperature (blinking)

— in the middle (2): the reference temperature (blinking)

— below (3): the present sensor temperature (steady)

✱ Warm up the sample medium until both the reference and the working temperatures have been reached (the corresponding values no longer blink).

During calibration, the rate of change of temperature for the sample solution must not exceed

10°C/min for a JUMO CTI-750 with exposed temperature sensor, or

1°C/min for a JUMO CTI-750 with an internal temperature sensor.

As soon as one of the target temperatures has been reached, its display becomes static (no longer blinking).

Calibration can also be carried out through a cooling procedure

(falling temperature). In this case, it starts above the working temperature and finishes below the reference temperature.

The LC display now shows the derived temperature coefficient in %/°C.

To accept the temperature coefficient that has been determined -> press the

PGM

key for at least 3 seconds or to reject the value -> press the

EXIT

key.

The transmitter is in the calibration menu.

✱ Press the

EXIT

key.

The transmitter is now in the measurement mode, and shows the compensated conductivity of the reference solution.

57

11 Calibration

11.3.2 Non-linear temperature coefficient (ALPHA)

General

Since the temperature coefficient of some media is not constant over a sizeable temperature range, the JUMO CTI-750 provides the option of subdividing a temperature range (T

Start

to T

End

) into 5 sections. A different TC value can be used for compensation in each of these range sections. This “TC curve” can be

— edited with the setup program and transmitted to the device.

— or calibration can be performed automatically on the device.

Determining the

TC curve

5

3

4

2

1

γ

Ref

γ

2

T

Start

=T

1

T

2

T

Ref

T

3

Calculation of a temperature coefficient

α = temperature coefficient (TC)

γ = uncompensated conductivity

T

4

T

5

T

End

=T

6

Temperature

58

11 Calibration

TC curve

Temperature compensation with the TC curve

The present temperature of the medium is applied to the TC curve to determine the corresponding temperature coefficient,

see “TC curve”, page 59.

Intermediate values, e.g. (

α x

at T x

) between two known values (

α

(

α

4

at T

4

) are derived through a linear interpolation.

3

at T

3

) and

The derived TC is used to calculate the compensated conductivity, in the same way as with the linear compensation.

If the measured temperature is lower than the start temperature, the first TC is used for compensation.

If the measured temperature is higher than the end temperature, the last TC is used for compensation.

Sequence for automatic calibration on the

JUMO CTI-750

The TC curve is automatically recorded over a temperature range that has been defined by the user. The temperature range between the start and end temperatures is subdivided into 5 sections of equal size.

The temperature range must be larger than 20°C, and cover the reference temperature.

Example: Reference temperature 25°C, start temperature 18°C and end temperature 50°C.

59

11 Calibration

The rate of change of the temperature must not exceed

— 10°C / min for an exposed temperature sensor, and

0 1°C / min for an internal temperature sensor.

Requirements

— The supply voltage for the JUMO CTI-750 must be present.

see Chapter 7 “Installation”, page 28ff.

— The sensor must be connected to the transmitter (for the split version).

— The transmitter is in the measurement mode.

✱ Immerse the conductivity sensor in a sample of the solution to be measured.

✱ Press the

PGM

key for at least 3 seconds.

✱ Use the

or key to select CALIBRATION LEVEL; use the

PGM

key to confirm the selection.

✱ Use the

or key to select TEMPCOMP NON-LIN.; use the

PGM

key to confirm the selection.

60

11 Calibration

✱ Use the

or key to enter the start temperature; confirm with the

PGM key.

The start temperature must be lower than the reference temperature (25.0°C).

✱ Use the

or key to enter the end temperature; confirm with the

PGM key.

The end temperature must be at least 20°C above the start temperature.

The transmitter will define the fixed temperature points itself. The LC display now shows

— at top (1): the next target temperature (blinking)

— below (2): the present sensor temperature (steady)

(1)

(2)

✱ Warm up the sample medium until is it above/below the temperature that is blinking.

61

11 Calibration

The next target measured temperature is displayed as blinking.

During calibration, the rate of change of temperature for the sample solution must not exceed

10°C/min for a JUMO CTI-750 with exposed temperature sensor, or

1°C/min for a JUMO CTI-750 with an internal temperature sensor.

As soon as one of the target temperatures has been reached, its display becomes static (no longer blinking).

✱ Warm up the sample medium until is it above the temperature that is blinking.

✱ Repeat the procedure as often as required, until the JUMO CTI-750 has determined all 6 temperature coefficients.

The LC display now shows the derived temperature coefficients in %/°C.

✱ To accept the temperature coefficients that have been determined -> press the

PGM

key for at least 3 seconds or to reject the values -> press the

EXIT

key.

The transmitter is in the calibration menu.

✱ Press the

EXIT

key.

The transmitter is now in the measurement mode, and shows the compensated conductivity of the reference solution.

62

12 Maintenance

12.1 Cleaning the conductivity sensor

Deposits

Do not use solvents.

Hard-to-remove crusts and deposits can be softened and removed with dilute hydrochloric acid.

Observe the safety regulations!

Deposits on the sensor section can be removed with a soft brush (e.g. a bottle brush).

63

13 Eliminating faults and malfunctions

Possible errors

t

Problem

No measurement display or signal output

Measurement display

000 or signal output 0%

(e.g. 4 mA)

Measurement display

8888 blinking + device status ALARM blinking.

Possible cause

Supply voltage missing

Sensor not immersed in medium, reservoir level too low

Flow-through fitting is blocked

Sensor is faulty

Measures

Check supply voltage, also check terminals

Top up the reservoir

Clean flow-through fitting

see “Checking the instrument”, page 64

Out of range => above or below measurement/ display range

Choose suitable measurement range, or check the concentration table

The temperature display is OK or

LED 1 + LED 2 blink

Measurement display

8888 blinking + device status ALARM blinking.

The temperature sensor is faulty.

The temperature display shows 8888 blinking or

LED 1 + LED 2 blink set measurement acquisition

“Temperature input”

briefly to manual, see

“TEMPERATURE IN”, page 43.

Top up the reservoir Wrong or unstable measurement display

Sensor not immersed deeply enough

Inadequate mixing

The transmitter or the conductivity sensor has to be replaced or

Air bubbles

Ensure good mixing, for sensor: make sure there is an all-round clearance of approx.

5 mm, to allow all-round flow

Check mounting site,

see “General”, page 15.

13.1 Checking the instrument

General

The instrument is calibrated at the factory, and is maintenance-free. If, nevertheless, measurement deviations appear with no apparent cause, the transmitter can be tested as follows.

64

13 Eliminating faults and malfunctions

13.1.1 Resistance loop test

Position of the resistance loop

During calibration, do not touch the sensitive part of the cell or put it down on any surface, otherwise the measurement will be falsified.

Calculating the resistance

✱ Loop a wire through the cell (see diagram)

✱ Connect a resistor R to the wire

Formula for calculating the resistance of the resistance loop:

N

2

· K

R =

Cond

R

N

= Resistance of the resistance loop

= No. of turns in the loop

K = Cell constant

Cond = Required display in S/cm

Note: 1 mS/cm = 1·10

-3

S/cm

1

µS/cm

=

1·10

-6

S/cm

For display values up to 20 mS, the loop must have 1 turn.

For display values above 50 mS, the loop must have 3 turns.

The cell constant of the JUMO CTI-750 depends on the style.

The T-shaped measuring cell has a cell constant of 6.80 1/cm.

The VARIVENT

®

cell has a cell constant of 6.50 1/cm.

65

13 Eliminating faults and malfunctions

Example 1

Example 2

The JUMO CTI-750 with a T-shaped PEEK measuring cell is to show 20 mS:

R =

1

2

·6.80 1/cm

20·10

-3

S/cm

= 340

Ω

To obtain a display of 20 mS/cm, the resistance loop (with 1 turn) must have a resistance of 340 Ohm.

The JUMO CTI-750 with a T-shaped PEEK measuring cell is to show 500 mS:

R =

3

2

·6.80 1/cm

500·10

-3

S/cm

= 122.4

Ω

The obtain a display of 500 mS/cm, the resistance loop (with 3 turns) must have a resistance of 122.4 Ohm.

66

13 Eliminating faults and malfunctions

Precalculated values

The display value 0 is obtained if the sensor is dry and without a conductive deposit, and has no resistance loop fitted.

Style / cell constant

Material: PEEK

K = 6.80 1/cm

Display for range end

500 µS/cm

1000 µS/cm

2000 µS/cm

5000 µS/cm

10 mS/cm

20 mS/cm

50 mS/cm

100 mS/cm

200 mS/cm

500 mS/cm

1000 mS/cm

2000 mS/cm

Number of turns

3

3

3

3

1

1

1

1

1

1

1

1

1

1

1

1

3

3

3

3

3

3

3

3

Material: PVDF

K = 5.45 1/cm

Material: PEEK

K = 6.50 1/cm

Cell constant

6.50

6.80

6.50

6.80

6.50

6.80

6.50

6.80

[1/cm]

6.80

6.50

6.80

6.50

6.80

6.50

6.80

6.50

6.80

6.50

6.80

6.50

6.80

6.50

6.80

6.50

Required resistance

[Ω]

13600.00

13000.00

6800.00

6500.00

3400.00

3250.00

1360.00

1300.00

680.00

650.00

340.00

325.00

1224.00

1170.00

612.00

585.00

306.00

292.50

122.40

117.00

61.20

58.50

30.60

29.25

67

13 Eliminating faults and malfunctions

Test sequence

✱ Calculate the test resistance.

✱ Connect up the JUMO CTI-750, see Chapter 7 “Installation”, page 28.

✱ Select the corresponding measurement range, see Chapter 10.5.1

“CONDUCTIVITY IN (conductivity input)”, page 40 -> RANGE 1 — 4

✱ Set TC to 0%/°C, see Chapter 10.5.1 “CONDUCTIVITY IN (conductivity input)”, page 40 -> TEMPCO.

✱ Fit the resistance loop as shown in the diagram.

13.1.2 Reference liquid test

Immerse in test solution

Test sequence

✱ Prepare the conductivity test solution in a container of adequate size.

✱ Connect up the device, see Chapter 7 “Installation”, page 28.

✱ Select the range appropriate to the conductivity test solution, see Chapter

10.5.1 “CONDUCTIVITY IN (conductivity input)”, page 40 -> RANGE 1 — 4

✱ Set TC to 0%/°C, see Chapter 10.5.1 “CONDUCTIVITY IN (conductivity input)”, page 40 -> TEMPCO.

✱ Immerse the cell in the container, and do not move it any more during the measurement.

68

13 Eliminating faults and malfunctions

13.1.3 Reference measuring instrument test

Immerse in test solution

Test sequence

✱ Prepare the conductivity test solution in a container of adequate size.

✱ Connect up the JUMO CTI-750, see Chapter 7 “Installation”, page 28.

✱ Select the range appropriate to the conductivity test solution, see Chapter

10.5.1 “CONDUCTIVITY IN (conductivity input)”, page 40 -> RANGE 1 — 4

✱ Set TC to 0%/°C, see Chapter 10.5.1 “CONDUCTIVITY IN (conductivity input)”, page 40 -> TEMPCO.

✱ Set the TC for the reference instrument to 0%/°C as well (see operating instructions for the reference instrument). If this is not possible, then the sample liquid must be tempered to the reference temperature for the reference instrument.

✱ Immerse the cell under test and the cell for the reference instrument in the container, and do not move them any more during the measurement.

✱ The output and display of the device under test or the attached display unit must match the indication of the attached reference instrument, taking into account acceptable device deviations.

69

14 Appendix

14 Appendix

14.1 Before configuration

If a number of instrument parameters have to be modified in the instrument, then it is advisable to note them in the table below, and then modify these parameters in the sequence given.

The following list shows the maximum number of parameters that can be altered.

Depending on the configuration, some of the parameters will not be alterable (editable) for your instrument.

Parameter

Offset

Filter time

Calibration interval

Conductivity output

Selection / value range

Factory setting

Conductivity input

Range 1 — 4

Temperature compensation

0 — 500 µS/cm

0 — 1000 µS/cm

0 — 2000 µS/cm

0 — 5000 µS/cm

0 — 10 mS/cm

0 — 20 mS/cm

0 — 50 mS/cm

0 — 100 mS/cm

0 — 200 mS/cm

0 — 500 mS/cm

0 — 1000 mS/cm

0 — 2000 mS/cm (uncompensated)

linear

non-linear natural water

Temperature coeff. 1 — 4 0 to 2.20 to 5.5%/°C

Reference temperature 15.0 to 25.0 to 30°C

Cell constant

Relative cell constant

2.00 — 6.80 — 10.00 1/cm

80.0 — 100.0 — 120.0%

Mounting factor

Concentration measurement

80.0 — 100.0 — 120.0%

no function

NaOH

HNO

3 customer-specific

-200 to 0 to +200 mS/cm

00:00:01 — 00:00:25 H:M:S

0 — 999 days

New setting see page

40

40

40

40

40

40

41

41

41

41

41

70

Parameter

Signal type

Scaling start

Scaling end

During alarm

During calibration

Safe value

Manual mode

Selection / value range

Factory setting

0 — 20 mA

4 — 20 mA

20 — 0 mA

20 — 4 mA

0 — 10 V

2 — 10 V

10 — 0 V

10 — 2 V

0 — 90% = 4 mA (e.g.) of range span

100 — 10% = 20 mA (e.g.) of range span

low

high safe value

moving

frozen safe value

0.0 — 4.0 — 22.0 mA

off

on

0.0 — 4.0 — 22.0 mA Manual value

Temperature input

Unit

°C

°F

Measurement acquisition

sensor

manual

Manual value

Offset

Filter time

-20.0 to 25 to 150°C

-15.0 to 0.0 to +15°C

00:00:00 — 00:00:01 — 00:00:25

H:M:S

Temperature output

Signal type

Scaling start

0 — 20 mA

4 — 20 mA

20 — 0 mA

20 — 4 mA

0 — 10 V

2 — 10 V

10 — 0 V

10 — 2 V

-20 to 0.0 to 183°C = 4 mA

(0 — 90% of range span)

14 Appendix

New setting see page

42

43

42

42

42

42

43

43

43

43

43

42

42

42

43

71

14 Appendix

Parameter

Scaling end

During alarm

During calibration

Selection / value range

Factory setting

-3 to 150 to 200°C = 20 mA

(100 — 10% of range span)

low

high safe value

moving

frozen safe value

0.0 — 4.0 — 22.0 mA Safe value

Manual mode

Manual value 0.0 — 4.0 — 22.0 mA

Binary output 1 or binary output 2

Function

off

on

no function

conductivity MIN contact conductivity MAX contact conductivity LK1 conductivity LK2 temperature MIN contact temperature MAX contact temperature LK1 temperature LK2 calibration timer alarm

Limit value

Hysteresis

Spacing

Manual mode

-20.0 — 9999.0

0.0 — 1.0 — 999.0

0.0 — 999.0

off

on

For “Hold”

For alarm/calibration

Switch-on delay

Switch-off delay

inactive

active frozen

inactive

active frozen

00:00:00 — 01:00:00 H:M:S

00:00:00 — 01:00:00 H:M:S

Pulse duration

Binary input

Function

00:00:00 — 01:00:00 H:M:S

no function

key lock / hold meas. range / temperature coefficient dilution function

Dilution function

Reduction 0 — 10 — 50%

72

New setting see page

43

42

42

44

42

42

44

45

45

45

45

45

45

46

46

46

46

46

Parameter

Dosing time

Lock time

Device data

Language

Contrast

Lighting

LCD inverse

Selection / value range

Factory setting

00:00:00 — 00:01:00 — 18:00:00

H:M:S

00:00:00 — 00:01:00 — 18:00:00

H:M:S

German

English

French

Spanish

Polish

Swedish

Italian

Portuguese

Dutch

Russian

0 — 6 — 11 off on

during operation off

on

14 Appendix

New setting see page

46

46

47

47

47

47

73

JUMO GmbH & Co. KG

Street address:

Moritz-Juchheim-Straße 1

36039 Fulda, Germany

Delivery address:

Mackenrodtstraße 14

36039 Fulda, Germany

Postal address:

36035 Fulda, Germany

Phone: +49 661 6003-0

Fax: +49 661 6003-607 e-mail: [email protected]

Internet: www.jumo.net

JUMO Instrument Co. Ltd.

JUMO House

Temple Bank, Riverway

Harlow, Essex CM 20 2 TT, UK

Phone: +44 1279 635533

Fax: +44 1279 635262 e-mail: [email protected]

Internet: www.jumo.co.uk

JUMO Process Control, Inc.

8 Technology Boulevard

Canastota, NY 13032, USA

Phone: 315-697-JUMO

1-800-554-JUMO

Fax: 315-697-5867 e-mail: [email protected]

Internet: www.jumo.us