Fluke 189 инструкция на русском

Page 3: Table Of Contents

Table of Contents Chapter Title Page Before You Start ………………….1-1 Safety Information………………….1-1 Contacting Fluke………………….1-1 Symbols ……………………. 1-4 Getting Acquainted…………………. 2-1 Introduction……………………2-1 Turning the Meter On………………… 2-1 Battery Considerations ………………..2-2 Automatic Power Off ………………..2-2 Automatic Backlight Off………………… 2-3 Low Battery Indication………………..

Page 8: Model

Model 187 & 189 Users Manual…

Page 11: Before You Start

Chapter 1 Before You Start Safety Information Contacting Fluke The Fluke Model 187 and Model 189 True RMS To order accessories, receive assistance, or locate the Multimeters (hereafter referred to as the “meter”) comply nearest Fluke distributor or Service Center, call:…

Page 12: Safety Information

Model 187 & 189 Users Manual Table 1-1. Safety Information WWarning To avoid possible electric shock or personal injury, follow these guidelines: Do not use the meter if it is damaged. Before you use the meter, inspect the case. Look for cracks or missing plastic.

Page 14: Symbols

Model 187 & 189 Users Manual Symbols Symbols used on the meter and in this manual are explained in Table 1-2. Table 1-2. International Electrical Symbols AC (Alternating Current) Earth ground DC (Direct Current) Fuse AC and DC Double insulated Battery Important information Complies with relevant Canadian…

Page 15: Getting Acquainted

Chapter 2 Getting Acquainted Introduction Turning the Meter On Although this manual describes the operation of both To turn the meter on, turn the rotary switch from OFF to Models 187 and 189, all illustrations and examples any switch setting. assume use of Model 189.

Page 16: Battery Considerations

Model 187 & 189 Users Manual Automatic Power Off The display blanks and the meter goes into a “sleep” mode if you have not changed the rotary switch position or pressed a button for a set period. While in Sleep mode, pressing any button turns the meter on.

Page 17: Automatic Backlight Off

Getting Acquainted Battery Considerations Automatic Backlight Off Low Battery Indication Press to select the backlight level (low, high, or off.) In A constant battery icon ( ) in the upper left corner of low or high, the backlight turns off automatically after a the display notifies you that the batteries are low and given period.

Page 18: Rotary Switch

Model 187 & 189 Users Manual The rotary switch is shown in Figure 2-2. Each position is Rotary Switch described in Table 2-1. Turn the meter on by selecting any measurement function (identified with white letters around the rotary switch). The meter presents a standard display for that function (range, measurement units, modifiers, etc.) The display may also be influenced by some of the choices made in Setup.

Page 19: Pushbuttons

Getting Acquainted Pushbuttons Pushbuttons The buttons activate features that augment the function LOGGING AutoHOLD FAST MN MX selected with the rotary switch. The buttons are shown in HOLD HOLD MIN MAX MIN MAX Figure 2-3 and described in Table 2-2. CANCEL SAVE Use the blue button (…

Page 20: Rotary Switch Selections

Model 187 & 189 Users Manual Table 2-1. Rotary Switch Selections Position Rotary Switch Function Blue Key Function AC voltage measurement from 0 V to 1000.0 V dB over AC, AC over dB AC millivolt measurement from 0 mV to 3000.0 mV dB over AC, AC over dB DC voltage measurement from 0 V to 1000.0 V AC over DC (AC in primary display, DC in secondary…

Page 22: Pushbuttons

Model 187 & 189 Users Manual Table 2-2. Pushbuttons Yellow Button Button Description Function Description Note Press to access “Yellow Button Functions.” The box and the 24-hour clock appear in the lower corners of the display and the primary display freezes, allowing time to press a second button. Press to turn backlight on or off.

Page 24: Selecting The Range

Model 187 & 189 Users Manual Selecting the Range Understanding the Display Press to select either a fixed range or the Display features are shown in Figure 2-4 and described in autorange feature. Table 2-3. Major display features are described in the following paragraphs.

Page 25: Secondary Display

Getting Acquainted Understanding the Display dB (in ac volts functions): the dBm or dBV value. Bar Graph The bar graph provides an analog indication of the REL: the difference between the present reading and measured input. For most measurement functions, the bar a stored reference reading.

Page 27: Display Features

Getting Acquainted Understanding the Display Table 2-3. Display Features Number Feature Description Continuity test function is selected. Bar Graph. In normal operation 0 (zero) is on the left. In Relative %, 0 is in the center, negative values are to the left and positive to the right. The polarity indicator left of the bar graph shows the polarity of the input.

Page 31: Using The Input Terminals

Getting Acquainted Using the Input Terminals Using the Input Terminals All functions except current use the inputs. Current functions use the inputs shown below: function: Use A and COM inputs from 400 mA to 20 A. Use mA/ A and COM for inputs function: Use mA/ A and COM for inputs 5000.0 A.

Page 32: Using Display Hold

Model 187 & 189 Users Manual Using Display Hold AutoHOLD Press to enter the Display Hold mode and freeze the present reading and its time stamp. New readings now appear in the secondary display. See Figure 2-6. To exit Display Hold mode, press again.

Page 33: Using Autohold

Getting Acquainted Using AutoHOLD Using AutoHOLD Using MIN MAX WWarning The MIN MAX mode stores minimum (MIN) and maximum (MAX) input values. When the input goes below the stored AutoHOLD mode does not capture unstable minimum value or above the stored maximum value, the or noisy readings.

Page 35: Using Fast Mn Mx

Getting Acquainted Using FAST MN MX Using FAST MN MX FAST MN MX can capture transient signal events as short as 250 µs, but with decreased accuracy; only 3-1/2 display digits are allowed. Activate FAST MN MX by pressing . As with regular MIN MAX, you can then press to cycle through maximum, minimum, and average primary…

Page 36: Using Hold With Min Max Or Fast Mn Mx

Model 187 & 189 Users Manual Using HOLD with MIN MAX or FAST MN MX Press a second time to enter the REL% mode and display the difference as 10 % of the reference You can enable the HOLD mode when in the MIN MAX reading.

Page 37: Making Measurements

5.0000 V range to provide direct reading display for volts or amps position. Fluke accessories that have a millivolt output with limits scaled by 1000. For example, the Fluke 80i-1000 Measuring Voltage Current Clamp provides 1 mV ac per amp measured up to 1000 amps.

Page 38: Measuring Ac Voltage

Model 187 & 189 Users Manual When measuring voltage, the meter acts like a 10 M (10,000,000 ) impedance in parallel with the circuit. This loading effect can cause measurement errors in high- impedance circuits. In most cases, the error is negligible (0.1% or less) if the circuit impedance is 10 k (10,000 or less.

Page 39: Db Measurements In Ac Volts Functions

Making Measurements Measuring Voltage dB Measurements in AC Volts Functions The two ac volts functions allow you to display readings as deviations in dB (decibels) above or below an established level. Set up dB measurements with the following procedure: Make an ac volts measurement to be used as a reference point.

Page 40: Both Ac And Dc Voltage Measurements

Model 187 & 189 Users Manual dB is calculated with the following formula: Measuring DC Voltage Set up the meter for dc voltage measurement as shown in Figure 3-4. All pushbutton features are available for a standard dc volts reading. Both AC and DC Voltage Measurements For dBm, Vr is the voltage across the reference resistance at 1 mW.

Page 42: Measuring Resistance

Model 187 & 189 Users Manual Measuring Resistance Caution LOGGING MULTIMETER To avoid possible damage to the meter or to the equipment under test, disconnect circuit power and discharge all high-voltage capacitors before measuring resistance. AutoHOLD FAST MN MX LOGGING HOLD HOLD MIN MAX…

Page 44: Testing For Continuity

Model 187 & 189 Users Manual Testing for Continuity Keep the following in mind when measuring resistance: Caution Because the meter’s test current flows through all possible paths between the probe tips, the measured To avoid possible damage to the meter or to value of a resistor in a circuit is often different from the equipment under test, disconnect circuit the resistor’s rated value.

Page 45: Using Conductance For High Resistance Tests

Making Measurements Using Conductance for High Resistance Tests Continuity testing provides you with both a visual Using Conductance for High Resistance indication of the state encountered (usually near 0 Tests resistance for a short or OL for an open) and an audible beep when the input is low.

Page 48: Measuring Capacitance

Model 187 & 189 Users Manual To measure capacitance, set up the meter as shown in Measuring Capacitance Figure 3-8. The blue key toggles the selection between Caution capacitance and diode test. To avoid possible damage to the meter or to While measuring capacitance, the following pushbutton the equipment under test, disconnect circuit functions are not available:…

Page 49: Testing Diodes

Making Measurements Testing Diodes Testing Diodes Caution LOGGING MULTIMETER To avoid possible damage to the meter or to the equipment under test, disconnect circuit power and discharge all high-voltage capacitors before testing diodes. AutoHOLD FAST MN MX LOGGING HOLD HOLD MIN MAX MIN MAX CANCEL…

Page 51: Measuring Temperature

Making Measurements Measuring Temperature Measuring Temperature To measure temperature, set up the meter as shown in LOGGING MULTIMETER Figure 3-10. The meter begins temperature measurement in the degree units last used (Celsius C or Fahrenheit F). Once you have selected the temperature function, you can change units by pressing the blue button.

Page 52: Measuring Current

Model 187 & 189 Users Manual To measure ac or dc current, proceed as follows: Measuring Current WWarning Turn off power to the circuit. Discharge all high- voltage capacitors. Never attempt an in-circuit current Insert the black lead into the COM terminal. Insert the measurement where the open-circuit potential red lead in an input appropriate for the measurement to earth is greater than 1000 V.

Page 53: Input Alert™ Feature

Making Measurements Measuring Current If you are using the A terminal, set the rotary switch to Input Alert™ Feature mA/A. If you are using the mA/ A terminal, set the If a test lead is plugged into the mA/ A or A terminal, but rotary switch to A for currents below 5000 A the rotary switch is not correctly set to one of the current (5 mA), or mA/A for currents above 5000 A.

Page 54: Measuring Ac Current

Model 187 & 189 Users Manual The following are some tips for measuring current: Measuring AC Current To measure ac current, set up the meter as shown in If the display shows and you are sure the Figure 3-11. meter is set up correctly, test the meter’s fuses as described under «Testing the Fuses»…

Page 56: Measuring Dc Current

Model 187 & 189 Users Manual Press a third time to display the ac + dc rms value Measuring DC Current in the primary display. (FAST MN MX is unavailable in To measure dc current, set up the meter as shown in this state.) Figure 3-12.

Page 58: Measuring Frequency

Model 187 & 189 Users Manual Measuring Frequency Frequency is the number of cycles a signal completes each second. The meter measures the frequency of a voltage or current signal by counting the number of times ac+dc the signal crosses a threshold level each second. Figure 3-13 highlights the function selections that allow ac+dc frequency measurement.

Page 59: Measuring Duty Cycle

Making Measurements Measuring Duty Cycle The following are some tips for measuring frequency: If a reading shows as 0 Hz or is unstable, the input signal may be below or near the trigger level. You can usually correct these problems by selecting a lower range, which increases the sensitivity of the meter.

Page 61: Measuring Pulse Width

Making Measurements Measuring Pulse Width input range will often measure better than the AUTO- To measure duty cycle, set up the meter to measure selected input range. frequency; then press a second time. You can select the level the meter uses by pressing If a duty cycle reading is unstable, press until the trigger on the positive slope or…

Page 65: Using Memory & Communications Features

Chapter 4 Using Memory & Communications Features Introduction Logged Readings Memory The logging interval (Log Int) can be set using the meter Chapter 4 shows you how to use memory and or FlukeView Forms. You can view the average reading communication features available on the meters.

Page 66: Storing Saved Readings

Model 187 & 189 Users Manual Storing Saved Readings Starting Logging To add the current displayed reading to the saved To begin logging, press (LOGGING). readings memory, press (SAVE). is shown on the display. The logging interval is appears briefly to confirm the operation and preset to 15 minutes.

Page 67: Viewing Memory Data

Using Memory & Communications Features Viewing Memory Data The primary display shows memory data. Refer to Viewing Memory Data Figure 4-1 for an explanation of the VIEW MEM Use the following procedure to view memory data: display. Note If the primary display data is a logged reading, appears in the display.

Page 68: View Display

Model 187 & 189 Users Manual Table 4-1. View Display Item Description arrow Denotes use of icons. to select higher or lower index numbers. symbol Hazardous voltage could be present at inputs. Identifies that the average of a logging interval is displayed. When off, a saved reading is displayed.

Page 69: Clearing Memory

Using Memory & Communications Features Clearing Memory If you attempt to save a meter reading when saved Clearing Memory readings memory is full, appears in the display. You You can clear memory in two ways. must use the VIEW MEM function to clear saved readings memory before proceeding.

Page 71: Changing The Default Settings

Chapter 5 Changing the Default Settings Introduction In the Setup mode, each press of (SETUP) saves changes to the last selection and steps to the next The meter allows you to change the default operating option. configuration of the meter by changing setup options Each setup option appears in the primary display in the made at the factory.

Page 72: Function Specific Setup Selections

Model 187 & 189 Users Manual Table 5-1. Function Specific Setup Selections < > Selection Precondition Option Choices ( Factory Default Temperature ( Temperature ) — Use selected. offset adjust increment or decrement digit. < > to select digit. Selected digit flashes.

Page 73: Common Setup Selections

Changing the Default Settings Selecting Setup Options Table 5-2. Common Setup Selections Selection Option Choices Factory Default < > Beeper (flashing) Use to select. < > Display digits (4) or (5) Use to select. Backlight time out MM:SS — Use to increment or decrement minute or second values.

Page 74: Adjusting The Temperature Offset

Model 187 & 189 Users Manual Select and edit setup options as follows: Adjusting the Temperature Offset Turn the rotary switch to a measurement function: If the meter is in a temperature measurement function, use the following procedure to set an offset for your Press to advance to the next setup option temperature probe:…

Page 76: Selecting Display Resolution (3 1/2 Or 4 1/2 Digits)

Model 187 & 189 Users Manual Selecting Display Resolution Setting the Power Off Timeout (3 1/2 or 4 1/2 Digits) Press until appears in the display. For most functions, you can choose whether the meter The present power off time in hours and minutes displays the reading in 3-1/2 or 4-1/2 digits.

Page 77: Setting The 24-Hour Clock

Changing the Default Settings Setting the 24-Hour Clock Press ) to advance to the minute setting; the Setting the 24-Hour Clock minute digits begin flashing. The meter uses 24-hour clock readings as time stamps Press to increase or decrease the during HOLD, AutoHOLD, MIN MAX, FAST MN MX, minute value.

Page 78: Returning To Factory Defaults

Model 187 & 189 Users Manual Returning to Factory Defaults Saving Setup Options Your meter comes with the setup options preset at the At each setup option, store your choice and advance to factory. These factory settings are shown in Tables 5-1 the next option by pressing and 5-2.

Page 79: Maintenance

Chapter 6 Maintenance Introduction Soak a new swab with alcohol. Work the swab around in each terminal. This chapter describes basic operator maintenance. For Testing the Fuses calibration and performance test information, order the 187 & 189 Service Manual, PN 1584337. Before measuring current, test the appropriate fuse as shown in Figure 6-1.

Page 81: Replacing The Batteries

Maintenance Replacing the Batteries Replace the batteries as follows (refer to Figure 6-2): Replacing the Batteries Turn the rotary switch to OFF and remove the test Replace the batteries with four AA batteries (NEDA I5A or leads from the terminals. IEC LR6).

Page 83: Replacing The Fuses

User-Replaceable Parts W Warning User-replaceable parts are listed in Table 6-1. These parts can be ordered by contacting Fluke. See “How to Contact To avoid electrical shock or damage to the Fluke» in Chapter 1. meter, only use replacement fuses specified in Table 6-1.

Page 84: User-Replaceable Parts

Model 187 & 189 Users Manual Table 6-1. User-Replaceable Parts Description Reference Designators Part Number Access Door, Battery / Fuse MP14 666446 Tilt-Stand 659026 Accessory Mount 658424 WFuse, 0.44 A (44/100 A, 440 mA), 1000 V, FAST 943121 WFuse, 11 A,1000 V FAST 803293 Battery, 1.5 V, 0-15 mA, AA Alkaline H8, H9, H10, H11…

Page 85: Specifications

Chapter 7 Specifications Safety and Compliances Maximum voltage between any terminal and earth 1000 V dc or rms ac ground. Compliances — DUAL RATINGS Complies with IEC 1010-1 to 1000 V Overvoltage Category III, Pollution Degree 2; and IEC 664-1 to 600 V Overvoltage Category IV, Pollution Degree 2 * Certifications (Iisted and pending) CSA per standard CSA/CAN C22.2 No.

Page 86: Physical Specifications

Model 187 & 189 Users Manual Physical Specifications Display (LCD) Digital: 50000/5000 counts primary display, 5000 counts secondary display; updates 4/second. Analog: 51 segments, updates 40/second. Operating Temperature 20 C to + 55 C Storage Temperature 40 C to + 60 C Temperature Coefficient 0.05 x (specified accuracy) / C (<18 C or >28 C) Relative Humidity…

Page 87: Feature Summary

Specifications Feature Summary Feature Summary Feature Description Dual Digital Displays Primary: 50,000 counts Secondary: 5,000 count Analog Bar Graph Bar graph: 51 segments, updates 40 times/second Backlight with 2 brightness levels Bright white backlight for clear readings in poorly lighted areas Fast Autorange Meter automatically selects best range — instantly AC+DC true rms, ac rms specified to 100 kHz…

Page 88: Basic Specifications

Model 187 & 189 Users Manual Basic Specifications Function Ranges/Description DC Voltage 0 to 1000 V AC Voltage, true RMS 2.5 mV to 1000 V – 100 kHz bandwidth Basic Accuracy DC voltage: 0.025 % AC voltage: 0.4 % DC Current 0 to 10 A (20 A for 30 seconds) AC Current, true RMS 25 A to 10 A (20 A for 30 seconds)

Page 89: Detailed Accuracy Specifications

Specifications Detailed Accuracy Specifications Detailed Accuracy Specifications Accuracy is specified for a period of one year after calibration, at 18 C to 28 C (64 F to 82 F), with relative humidity to 90 %. Accuracy specifications are given as: ( [ % of reading ] + [ number of least significant digits ] ) AC mV, AC V, AC µA, AC mA, and AC A specifications are ac coupled, true rms and are valid from 5 % of range to 100 % of range.

Page 95: Frequency Counter Sensitivity

Specifications Frequency Counter Sensitivity Frequency Counter Sensitivity Approximate VAC Sensitivity (RMS Sine Wave) Approximate VDC 15 Hz to Input Range VAC Bandwidth Trigger Levels Bandwidth 100 kHz 500 kHz 50 mV 5 mV 10 mV 1 MHz -5 mV & 5 mV 1 MHz 500 mV 20 mV…

Page 96: Input Characteristics

Model 187 & 189 Users Manual Input Characteristics Function Input Impedance (Nominal) Volts, mV 10 M , < 100 pF Common Mode Rejection Ratio Normal Mode Rejection DC Volts, mV >100 dB at dc, 50 Hz or 60 Hz ±0.1% >90 dB at 50 Hz or 60 Hz 0.1% AC Volts, mV…

Fluke 189 — page 1

® Model 187 & 189 True RMS M ultimeter Users Manual August 2000, Rev.2, 6/02 © 2000, 2002 Fluke Corporation. All rights reserved. Printed in U.S.A . All product names are trademarks of their respective companies. …

Fluke 189 — page 2

Lifetime Li mi ted Warranty Each Fluke 20, 70, 80, 170 and 180 Series DMM will be f ree from defect s in material and work mans hip f or its lif et ime. As us ed herein, “lifet i m e” i s defined as s ev en years af ter Fluk e di s continues manufac t uring the produc t , but t he warrant y period s hal l be at l eas t ten y ears from the date …

Fluke 189 — page 3

i Table of Contents Chapter Title Page 1 Before You Start ……………………………………………………………………………………………. 1-1 Safety Information……………………………………………………………………………………………. 1-1 Contacting Fluke …………………………….. …

Fluke 189 — page 4

Model 187 & 189 Users M anual ii Selecting the Range …………………………………………………………………………………………. 2-10 Understanding the Display ………………………………………………………………………………… 2-10 Primary Display ……………………………………. …

Fluke 189 — page 5

Contents (continued) iii Measuring AC Current …………………………………………………………………………………. 3-18 Measuring DC Current …………………………………………………………………………………. 3-20 Measuring Frequency ……………………………………………………… …

Fluke 189 — page 6

Model 187 & 189 Users M anual iv 6 Maintenance ………………………………………………………………………………………………….. 6- 1 Introduction ……………………………………………………………………………………………………. .6 — 1 General Maintenance …………………… …

Fluke 189 — page 7

v List of Tables Table Title Page 1-1. Safety Information…………………………………………………………………………………………… …….. 1-2 1-2. International Electrical Sym bols ………………………………………………………………………………. .1 — 4 2-1. Rotary Switch Selections …… …

Fluke 189 — page 8

Model 187 & 189 Users M anual vi …

Fluke 189 — page 9

vii List of Figures Figure Title P age 2-1. AC Volts Dis play ……………………………………………………………………………………………………. 2-2 2-2. Rotary Switch ………………………………………………………………………………………………………… 2-4 2-3. Pushbuttons ……. …

Fluke 189 — page 10

Model 187 & 189 Users M anual viii 3-10. Temperature Measurem ent ……………………………………………………………………………………… 3-15 3-11. AC Current Measurement………………………………………………………………………………………. .. 3-19 3-12. DC Current Measurement ……… …

Fluke 189 — page 11

1-1 Chapter 1 Before You Start Safety Informa tion The Fluke Model 187 and M odel 189 True RMS Multimeters (hereafter referred to as the “ meter ” ) comply with: • EN61010.1:1993 • ANSI/ISA S82.01-1994 • CAN/CSA C22.2 No. 1010.1-92 • 1000V Overvoltage Category III, Pollution Degree 2 • 600V Overvoltage C ategory IV, Pollution Degree 2 …

Fluke 189 — page 12

Model 187 & 189 Users M anual 1-2 Table 1-1. Safety Information W Warning To avoid possible electric shock or personal injury, follow these guidelines: • Do not use the meter if it is damaged. Before you use the meter , inspect the case. Look for cracks or missing plastic. Pay particular attention to the insulation surrounding the connectors. …

Fluke 189 — page 13

Before You Start Safety Information 1 1-3 Table 1-1. Safety Information (cont.) W Warning • When using the probes, keep your fingers behind the finger guar ds on the probes. • Connect the common test lead before you connect the live test lead. When you disconnect test leads, disconnect the live test lead first. • Remove test leads from the me …

Fluke 189 — page 14

Model 187 & 189 Users M anual 1-4 Symbols Symbols used on the meter and in this manual are explained in Table 1-2. Table 1-2. International Electrical Symbols AC (Alternating Current) Earth ground DC (Direct Current) Fuse AC and DC Double insulated Battery Important information Complies w ith relevant Canadian Standards Ass ociation directives …

Fluke 189 — page 15

2-1 Chapter 2 Getting Acquainted Introduction Although this manual des cribes the operation of both Models 187 and 189, all illus trations and exam ples assum e use of Model 189. Additional c apabilities with Model 189 are disc ussed in Chapter 4. Thes e capabilities include the following: • An enhanced memory function that features an additional …

Fluke 189 — page 16

Model 187 & 189 Users M anual 2-2 tc031f. eps Figure 2-1. AC Volts Display Battery Considerations The meter uses four AA alkaline batteries. The following paragraphs desc ribe several tec hniques used to c onserve battery power. Automatic Powe r Off The display blank s and the meter goes into a “ sleep ” mode if you hav e not changed the ro …

Fluke 189 — page 17

Getting Acquainted Battery Considerations 2 2-3 Automatic Backligh t Off Press T to select the back light level (low, high, or off.) In low or high, the backlight turns off automatically after a given period. This period is also preset to 15 m inutes and can be set to a m aximum of 99 m inutes from the s etup menu. If the period is s et to 0, the b …

Fluke 189 — page 18

Model 187 & 189 Users M anual 2-4 Rotary Switch Turn the meter on by s electing any m easurement function (identified with white letters around the rotary s witch). The meter presents a standard display for that func tion (range, measurem ent units, modifiers, etc.) The display may also be influenced by s ome of the choic es made in Setup. Use …

Fluke 189 — page 19

Getting Acquainted Pushbuttons 2 2-5 Pushbuttons The buttons activ ate features that augment the func tion selected with the rotary switc h. The buttons are shown in Figure 2-3 and described in Table 2-2. Use the blue button ( % ) to acc ess func tions labeled in blue for some of the rotary s witch pos itions. Table 2-1 defines all blue button func …

Fluke 189 — page 20

Model 187 & 189 Users M anual 2-6 Table 2-1. Rotary Switch Selections Position Rotary Switch Function % Blue Key Function AC voltage meas urement from 0 V to 1000.0 V dB over AC, AC over dB , AC millivolt m easurement from 0 mV to 3000.0 mV dB over AC, AC ov er dB $ DC voltage m easurement from 0 V to 1000.0 V AC over DC (AC in primary dis pl …

Fluke 189 — page 21

Getting Acquainted Pushbuttons 2 2-7 Table 2-1. Rotary Switch Positions (cont.) Position Rotary Switch Function % Blue Key Function I AC current meas urements from 0 mA to 20.000 A none = AC current meas urements from 0 µ A to 5000.0 µ A none K DC current m easurements from 0 mA to 20.000 A AC over DC (AC in prim ary display , DC in sec ondary di …

Fluke 189 — page 22

Model 187 & 189 Users M anual 2-8 Table 2-2. Pushbuttons Button Description Yellow Button Function Description Note Press O to access “Yellow Button Functions .” The O box and the 24-hour clock appear in the lower corners of the display and the prim ary display freezes, allowing tim e to press a s econd button. T l Press to turn bac klight …

Fluke 189 — page 23

Getting Acquainted Pushbuttons 2 2-9 Table 2-2. Pushbuttons (cont.) Button Description Yellow Button Function Description [ • In Setup, increment a digit . • In counter functions , select pos itive pulse s lope. • In ohms c ontinuity, selec t beep on open. • In VIEW MEM, s ee Chapter 4 (Model 189). (none) ] • In Setup, decrement a digit . …

Fluke 189 — page 24

Model 187 & 189 Users M anual 2-10 Selecting the Range Press R to select either a fixed range or the autorange feature. Note You cannot use R in c onductance, diode test, and temperature func tions or with the REL, MIN MAX, and FAST M N MX features. Thes e selections all use a spec ific fixed range. Autoranging (AUTO lighted in the display ) al …

Fluke 189 — page 25

Getting Acquainted Understanding the Dis play 2 2-11 • dB (in ac volts func tions): the dBm or dBV v alue. • REL: the difference between the pres ent reading and a stored reference reading. • Setup: various mes sages (s ee Chapter 5). • Overload c onditions: OL display ed. • Error conditions. Secondary Dis pla y The secondary display ofte …

Fluke 189 — page 26

Model 187 & 189 Users M anual 2-12 14 16 15 17 8 9 10 11 7 13 5 6 2 4 3 1 12 tc011f. eps Figure 2-4. Display Features …

Fluke 189 — page 27

Getting Acquainted Understanding the Dis play 2 2-13 Table 2-3. Display Features Number Feature Description  ~ Continuity test func tion is selected.  Bar Graph. In normal operation 0 (zero) is on the left. In Relative %, 0 is in the center, negativ e values are to the left and pos itive to the right. The polarity indicator left of the bar gr …

Fluke 189 — page 28

Model 187 & 189 Users M anual 2-14 Table 2-3. Display Features (cont.) Number Feature Description  FAST MIN MAX AVG FAST MN MX m ode is enabled. ( O M ) Minimum reading displayed. Maxim um reading display ed. Average reading display ed.  ; Readings are being recorded in m emory (M odel 189 only.) ( O + D )  g The meter is in Hold m ode …

Fluke 189 — page 29

Getting Acquainted Understanding the Dis play 2 2-15 Table 2-3. Display Features (cont.) Number Feature Description  AC+DC For dc volts and dc amps functions, reading represents the rms total of ac and dc measurem ents. e , k e M e , Ω : Ohm. The unit of res istance. k Ω : Kilohm. 1 x 10 3 or 1000 ohm s. M Ω : Megohm. 1 x 10 6 or 1,000,000 …

Fluke 189 — page 30

Model 187 & 189 Users M anual 2-16 Table 2-3. Display Features (cont.) Number Feature Description  51000 AUTO MANUAL Range. Digits dis play range in use.  f MS 88:88 Time Display. Used with HOLD, AutoHOLD, M IN MAX, FAST MN M X (SAVE, and LOGGING Model 189). Elapsed Time Dis play ( f on): show n in minutes:s econds to max imum of 59:59 — …

Fluke 189 — page 31

Getting Acquainted Using the Input Terminals 2 2-17 Using the Input Terminals All functions ex cept current us e the * and COM inputs. Current func tions use the inputs shown below: • I or K function: Us e A and COM inputs from 400 mA to 20 A. Use m A/ µ A and COM for inputs ≤ 400 mA. • = or x function: Us e mA/ µ A and COM for inputs ≤ 5 …

Fluke 189 — page 32

Model 187 & 189 Users M anual 2-18 Using Display Hold Press Q to enter the Display Hold m ode and freeze the present reading and its tim e stamp. New readings now appear in the secondary display. See Figure 2-6. To ex it Display H old mode, press Q again. Note The bar graph and secondary display m ay show different units in Capacitanc e and Ohm …

Fluke 189 — page 33

Getting Acquainted Using AutoHO LD 2 2-19 Using AutoHOLD W Warning AutoHOLD mode does not capture unstable or noisy readings. Do not use AutoHOLD mode to determine that circuits are without power. To enter AutoHOLD, press OQ (AutoHOLD). AutoHOLD m ode freezes the present reading and its time stamp. New readings now appear in the sec ondary display. …

Fluke 189 — page 34

Model 187 & 189 Users M anual 2-20 To exit MIN M AX mode, press O N (CANCEL) or turn the rotary switc h to a different position. Also, M IN MAX mode turns off automatically when a flashing B (low battery condition) oc curs. Note Minimum, maximum , and average values stored in the MIN MAX m ode are lost when the m eter is turned off. The MIN MAX …

Fluke 189 — page 35

Getting Acquainted Using F AST MN MX 2 2-21 Using FAST MN MX FAST MN MX c an capture transient s ignal events as short as 250 µs, but with dec reased acc uracy; only 3-1/2 display digits are allowed. Activate FAST MN MX by pres sing O M . As with regular MIN MAX, y ou can then press M to cycle through maximum , minimum , and average primary displa …

Fluke 189 — page 36

Model 187 & 189 Users M anual 2-22 Using HOLD with MIN MAX or FAS T MN MX You can enable the HOLD mode when in the MIN MAX mode is by pressing Q . No further minimum , maximum , or average updates oc cur while the HOLD m ode is enabled. Exit HOLD mode by press ing Q a second tim e. Using Relative Mode (REL) Selecting Relativ e mode ( D ) caus e …

Fluke 189 — page 37

3-1 Chapter 3 Making Measurements Introduction Chapter 3 explains how to make m easurements . Most measurem ent functions c an be selected by using the rotary switc h. White letters or sy mbols identify primary func tions; blue letters or sy mbols identify alternativ e functions. Press the blue button to acces s these alternate func tions. Frequenc …

Fluke 189 — page 38

Model 187 & 189 Users M anual 3-2 When measuring v oltage, the meter acts like a 10 M Ω (10,000,000 Ω ) impedance in parallel with the c ircuit. This loading effect can c ause meas urement errors in high- impedance c ircuits. In mos t cases , the error is negligible (0.1% or less) if the c ircuit impedanc e is 10 k Ω (10,000 Ω ) or l e …

Fluke 189 — page 39

Making Measurements Measuring Voltage 3 3-3 dB Measurements in AC Volts Functions The two ac volts functions allow you to display readings as deviations in dB (dec ibels) above or below an established level. Set up dB measurem ents with the following procedure: 1. Make an ac volts meas urement to be used as a reference point. 2. Press % to select d …

Fluke 189 — page 40

Model 187 & 189 Users M anual 3-4 dB is calc ulated with the following formula:       = Vr Vx dB 10 log * 20 • For dBm, Vr is the v oltage across the referenc e resistanc e at 1 mW. For example, Vr w ould be 0.7746 V with a 600 Ω reference resis tance. • For dBV, the reference voltage (Vr) is 1 V. Measuring DC Volt age S …

Fluke 189 — page 41

Making Measurements Measuring Voltage 3 3-5 AC over DC DC over AC AC + DC tc024f. eps Figure 3-3. AC and DC D isplay When the meter shows ac over dc or dc over ac , the following other pushbutton functions are not available: • AutoHOLD ( O Q ) • MIN MAX ( M ) • FAST MN MX ( O M ) • Hz ( N ) • Relative ( D ) • LOGGING ( O D ) …

Fluke 189 — page 42

Model 187 & 189 Users M anual 3-6 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400mA FUSED …

Fluke 189 — page 43

Making Measurements Measuring Res istanc e 3 3-7 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V …

Fluke 189 — page 44

Model 187 & 189 Users M anual 3-8 Keep the following in mind when m easuring resis tance: • Because the m eter ’ s test current flows through all possible paths between the probe tips, the meas ured value of a resistor in a c ircuit is often different from the resistor ’ s rated value. • The test leads c an add 0.1 Ω to 0.2 Ω of err …

Fluke 189 — page 45

Making Measurements Using Conduc tance for High Res istance Tes ts 3 3-9 Continuity testing prov ides you with both a visual indication of the state enc ountered (usually near 0 resistanc e for a short or OL for an open) and an audible beep when the input is low. In continuity, a s hort means a m easured value les s than 5% of full scale. You c an …

Fluke 189 — page 46

Model 187 & 189 Users M anual 3-10 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400mA FUSE …

Fluke 189 — page 47

Making Measurements Using Conduc tance for High Res istance Tes ts 3 3-11 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST …

Fluke 189 — page 48

Model 187 & 189 Users M anual 3-12 Measuring Capacitance Caution To avoid possible damage to the meter or to the equipment under test, disconnect circuit power and discharge all high-voltage capacitors before measuring capacitance. Use the dc voltage function to confirm that the capacitor is discharged. Capacitance is the ability of a com ponen …

Fluke 189 — page 49

Making Measurements Testing Diodes 3 3-13 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400mA F …

Fluke 189 — page 50

Model 187 & 189 Users M anual 3-14 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400mA FUSE …

Fluke 189 — page 51

Making Measurements Measuring Tem perature 3 3-15 Measuring Temperature To measure tem perature, set up the meter as s hown in Figure 3-10. The meter begins tem perature measurement in the degree units last us ed (Celsius ° C or Fahrenheit ° F). Once you hav e selected the temperature function, you c an change units by pressing the blue button. T …

Fluke 189 — page 52

Model 187 & 189 Users M anual 3-16 Measuring Current W Warning Never attempt an in-circuit current measurement where the open-circuit potential to earth is greater than 1000 V. You may damage the meter or be injured if the fuse blows during such a measurement. Caution To avoid possible damage to the meter or to the equipment under test, check t …

Fluke 189 — page 53

Making Measurements Measuring Current 3 3-17 3. If you are using the A term inal, set the rotary sw itch to mA/A. If you are us ing the mA/ µ A terminal, s et the rotary switc h to µ A for currents below 5000 µ A (5 mA), or mA/A for c urrents above 5000 µ A. 4. Open the circuit path to be tes ted. Touch the red probe to the more positiv e side …

Fluke 189 — page 54

Model 187 & 189 Users M anual 3-18 The following are some tips for measuring c urrent: • If the display s hows LEAd5 and you are s ure the meter is set up c orrectly, tes t the meter ’ s fu ses as described under «Tes ting the Fuses» in Chapter 6. • A current meter drops a s mall voltage ac ross its elf, which might affec t circ …

Fluke 189 — page 55

Making Measurements Measuring Current 3 3-19 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400m …

Fluke 189 — page 56

Model 187 & 189 Users M anual 3-20 Measuring DC Current To measure dc current, set up the meter as shown in Figure 3-12. You can view s eparate dc and ac am ps signal components . • Press % once to display ac current in the primary display and dc current in the sec ondary display (ac over dc). • Press % a second tim e to reverse the display …

Fluke 189 — page 57

Making Measurements Measuring Current 3 3-21 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400m …

Fluke 189 — page 58

Model 187 & 189 Users M anual 3-22 Measuring Frequency Frequency is the number of cycles a si gnal completes each sec ond. The meter measures the frequency of a voltage or current s ignal by counting the number of tim es the signal cros ses a thres hold level each s econd. Figure 3-13 highlights the function s elections that allow frequency m e …

Fluke 189 — page 59

Making Measurements Measuring Duty Cyc le 3 3-23 tc026f. eps Figure 3-14. Hz Display The meter beeps to indic ate when a particular pushbutton is not allowed when m easuring frequency . The following are some general rules. • Relative ( D ), Hold ( Q ), and MIN MAX ( M )can be used. • FAST MN MX ( O M ) cannot be used. The following are some ti …

Fluke 189 — page 60

Model 187 & 189 Users M anual 3-24 -Slope Trigger Point +Slope Trigger Point 30% Above Trigger Point 100% -Slope Trigger Point +Slope Trigger Point 70% Below Trigger Point 100% Measures Positive Pulse Measures Negative Pulse tc009f. eps Figure 3-15. Duty Cycle Measur ements …

Fluke 189 — page 61

Making Measurements Measuring Puls e Width 3 3-25 To me asur e dut y cycle , set u p th e met er t o mea su re frequency; then pres s N a sec ond time. You can select the lev el the meter uses by press ing [ to trigger on the positive s lope or ] to trigger on the negative slope. A ty pical duty cycle di spla y is sho wn i n Figure 3-16. tc027f. ep …

Fluke 189 — page 62

Model 187 & 189 Users M anual 3-26 +Slope Trigger Point Pulse Width Period = Period -Slope Trigger Point Pulse Width Start and Stop on Positive Slope Start and Stop on Negative Slope 1 Frequency tc020f. eps Figure 3-17. Pulse Width Measurements …

Fluke 189 — page 63

Making Measurements Measuring Puls e Width 3 3-27 The meter meas ures pulse width in the 500.00 or 1000.0 ms ranges . To measure puls e width, set up the meter to meas ure frequency; then pres s N two more times . As with the dut y cycl e fu ncti on, you ca n sel ect wh ich l evel the mete r uses by pressing [ to trigger on the pos itive slope or ] …

Fluke 189 — page 64

Model 187 & 189 Users M anual 3-28 …

Fluke 189 — page 65

4-1 Chapter 4 Using Memory & Communications Features Introduction Chapter 4 shows you how to use m emory and comm unication features av ailable on the meters. Note Memory, Logging, and Sav e features apply to the 189 only. Types of Memory The meter has two ty pes of memory data: saved readings and logged readings . Saved Readings Memory Saved r …

Fluke 189 — page 66

Model 187 & 189 Users M anual 4-2 Storing Saved Readings To add the current display ed reading to the saved readings memory , press O R (SAVE). • 5AVEd appears briefly to c onfirm the operation and the index number dis play increm ents by one. • FULL appears if no room is available in the sav ed readings memory (after 100 saves ). Saved rea …

Fluke 189 — page 67

Using Memory & Communications Features Viewing Memory Data 4 4-3 Viewing Memory Data Use the following proc edure to view mem ory data: Note Viewing memory data involves turning the rotary switch from its current func tion. Selections are not retained when you turn the sw itch. To return the meter to this function after v iewing memory data, no …

Fluke 189 — page 68

Model 187 & 189 Users M anual 4-4 2 7 3 4 1 5 6 tc035f. eps Figure 4-1. View Display Table 4-1. View Display No. Item Description  q arrow icons. Denotes use of [ or ] to select higher or lower index numbers.  Z sym bol Hazardous v oltage could be present at inputs.  ; Identifies that the average of a logging interval is dis played. Wh …

Fluke 189 — page 69

Using Memory & Communications Features Clearing Memory 4 4-5 Clearing Memory You can clear mem ory in two way s. • First, If the rotary s witch is in the VIEW M EM position, you can pres s the blue button ( % ) to activ ate the CLEAR MEM func tion. CLr.? appears in the dis play. You are then prompted to press [ (YES) to clear the type of memo …

Fluke 189 — page 70

Model 187 & 189 Users M anual 4-6 …

Fluke 189 — page 71

5-1 Chapter 5 Changing the Default Settings Introduction The meter allows y ou to change the default operating configuration of the meter by changing setup options made at the factory . Many of thes e setup options affec t general meter operations and are activ e in all functions. Ot hers are limited to one function or group of func tions. These se …

Fluke 189 — page 72

Model 187 & 189 Users M anual 5-2 Table 5-1. Function Specific Setup Selections Selection Precondition Option Choices ( ) Factory Default 000.0 ° C or 000.0 ° F Temperature ( w ) sele cted . Temperature offset adjust 000.0 ° to ± 100.0 ° C ( 180 . 0 ° F ) — Use q to increment or dec rement digit. Use to selec t digit. Selected digit flash …

Fluke 189 — page 73

Changing the Default Settings Selecting Setup Options 5 5-3 Table 5-2. Common Setup Selections Selection Option Choices Factory Default bEEP Beeper yE5 or no (flashing) Use to select. yE5 8888 Displ a y dig its 8888 (4) or 88888 (5) Use to select. 88888 bLoFF Backlight time out MM:SS — Us e q to increment or dec rement minute or second v alues. Use …

Fluke 189 — page 74

Model 187 & 189 Users M anual 5-4 Select and edit setup options as follows: • Turn the rotary switc h to a measurem ent function: • Press O T to advance to the next setup option and save the pres ent selection. • Press [ to increase or ] to decrease a v alue. • Press T ( l ) to go back to the previous digit or sele ctio n. • Press % ( …

Fluke 189 — page 75

Changing the Default Settings Adjusting the Temperature O ffset 5 5-5 If necess ary, adjust the temperature offs et until the temperature on the primary display matc hes the temperature indicated by the lag bath thermometer. 1. Press % ( s ) to advance to the nex t digit and press T ( l ) to go back to the prev ious digit. 2. Press [ or ] to increa …

Fluke 189 — page 76

Model 187 & 189 Users M anual 5-6 Selecting Display Resolution (3 1/2 or 4 1/2 Digits) For most func tions, you c an choose whether the m eter displays the reading in 3-1/2 or 4-1/2 digits. • The 3-1/2 digit setting provides lower resolution with faster respons e time. • The 4-1/2 digit setting provides greater resolution with slower respon …

Fluke 189 — page 77

Changing the Default Settings Setting the 24-Hour Clock 5 5-7 Setting the 24-Hour Clock The meter uses 24-hour clock readings as time s tamps during HOLD, AutoHOLD , MIN MAX, FAST M N MX, SAVE, and LOGGING operations. Hours and minutes to a maxim um of 23:59 can be s et. Note The meter uses elapsed time for all MI N MAX readings. Elapsed tim e is e …

Fluke 189 — page 78

Model 187 & 189 Users M anual 5-8 Returning to Factory Defaults Your meter comes with the setup options pres et at the factory. Thes e factory s ettings are shown in Tables 5-1 and 5-2. You can always return to these settings as follows: 1. Press O T until Fcty appears in the display . 2. Press % to select yE5 ; press T to select no . If yo u s …

Fluke 189 — page 79

6-1 Chapter 6 Maintenance Introduction This chapter des cribes bas ic operator maintenanc e. For calibration and performanc e test information, order the 187 & 189 Service M anual , PN 1584337. General Maintenance Periodically wipe the c ase with a dam p cloth and mild detergent. Do not use abrasiv es or solv ents. Dirt or moisture in the term …

Fluke 189 — page 80

Model 187 & 189 Users M anual 6-2 1 0 0 0 V 400m A FU S ED 10A M A X FU S ED C A T M IN M A X H O L D R E L % m s H z R A N G E d B d B a c + d c a c + d c a c + d c a c + d c F n S mA mA A mV V mV V O F F C A A A A m A C O M V TEMPERATURE A a c + d c AutoHOLD LOGGING SAVE CANCEL FAST MN MX YES NO C L E A R M E M V IE W SETUP 1 0 0 0 V 400m A F …

Fluke 189 — page 81

Maintenance Replacing the Batteries 6 6-3 Replacing the Batt eries Replace the batteries with four AA batteries (NEDA I5A or IEC LR6). W Warning To avoid false readings, which could lead to possible electric shock or personal injury, replace the batteries as soon as the battery indicator ( B ) appears. Replace the batteries as follows (refer to Fig …

Fluke 189 — page 82

Model 187 & 189 Users M anual 6-4 F2 F1 tc037f. eps Figure 6-2. Battery and Fuse Replacement …

Fluke 189 — page 83

Maintenance Replacing the Fuses 6 6-5 Replacing the Fuses W Warning To avoid electrical shock or damage to the meter, only use replacement fuses specified in Table 6-1. Referring to Figure 6-2, examine or replac e the meter ’ s fuses as follows : 1. Turn the rotary switc h to OFF and remove the tes t leads from the term inals. 2. Remo ve th e ba …

Fluke 189 — page 84

Model 187 & 189 Users M anual 6-6 Table 6-1. User-Replaceable Parts Description Reference Designators Part Number Qty Access Door, Battery / Fus e MP14 666446 1 Tilt-Stand MP8 659026 1 Acces sory Mount MP9 658424 1 W Fuse, 0.44 A (44/100 A, 440 mA), 1000 V, FAST F1 943121 1 W Fuse, 11 A,1000 V FAST F2 803293 1 Battery, 1.5 V, 0-15 mA, AA Alk al …

Fluke 189 — page 85

7-1 Chapter 7 Specifications Safety a nd Compliances Maximum volt age bet ween any ter m i nal and eart h ground. 1000 V dc or r ms ac Compliances — DUAL RATI NGS Complies wit h IEC 1010-1 t o 1000 V Overvolt age Cat egory III, Pollut i on Degree 2; and I EC 664-1 t o 600 V Over volt age Cat egory IV, Pol luti on Degr ee 2 * Certi f icati ons (Ii s …

Fluke 189 — page 86

Model 187 & 189 Users M anual 7-2 Physical Specifications Display (LCD) Digital: 50000/5000 counts prim ary dis play, 5000 counts s econdary dis play; updates 4/sec ond. Analog: 51 segments , updates 40/sec ond. Operating Temperature − 20 ° C to + 55 ° C Storage Temperature − 40 ° C to + 60 ° C Temperature Coefficient 0.05 x (spec ified …

Fluke 189 — page 87

Specifications Feature Summary 7 7-3 Feature Summary Feature Description Dual Digital Displays Analog Bar Graph Primary: 50,000 counts Secondary: 5,000 count Bar graph: 51 segments , updates 40 times /second Backlight with 2 brightness levels Bright white backlight for c lear readings in poorly lighted areas Fast Autorange Meter automatically s ele …

Fluke 189 — page 88

Model 187 & 189 Users M anual 7-4 Basic Specifications Function Ranges/Description DC Voltage 0 to 1000 V AC Voltage, true RMS 2.5 mV to 1000 V – 100 k Hz bandwidth Basic Accuracy DC voltage: 0.025 % AC voltage: 0.4 % DC Current 0 to 10 A (20 A for 30 seconds) AC Current, true RMS 25 µ A to 10 A (20 A for 30 s econds) Resistance 0 to 500 M ? …

Fluke 189 — page 89

Specifications Detailed Accurac y Specific ations 7 7-5 Detailed Accuracy Specifications Accurac y is spec ified for a period of one year after calibration, at 18 ° C to 28 ° C (64 ° F to 82 ° F), with relativ e humidity to 90 %. Accurac y spec ifications are giv en as: ± ( [ % of reading ] + [ number of least s ignificant digits ] ) AC mV, AC …

Fluke 189 — page 90

Model 187 & 189 Users M anual 7-6 Accuracy Function Range Resolution 45-1 kHz 20-45 Hz 1-20 kHz 20 kHz-100 kHz AC µ A 500.00 µ A 0.01 µ A 0.75 % + 20 1 % + 20 0.75 % + 20 6 % + 40 5,000.0 µ A0 . 1 µ A 0.75 % + 5 1% + 5 0.75 % + 10 2 % + 40 AC mA 50.000 mA 0.001 mA 0.75 % + 20 1% + 20 0.75 % + 20 9 % + 40 400.00 mA 0.01 mA 0.75 % + 5 1% + 5 …

Fluke 189 — page 91

Specifications Detailed Accurac y Specific ations 7 7-7 Accuracy Accuracy Dual Display A C or AC+DC 3 Function Range Resolution DC 20 — 45 Hz 45 Hz — 1 kHz 1 kHz- 20 kHz DC mV 50.000 mV 0.001 mV 0.1% + 20 6 % + 40 500.00 mV 0.01 mV 0.03 % + 2 3000.0 mV 0.1 mV 0.025 % + 5 2 % + 40 DC V 5.0000 V 0.0001 V 0.025 % + 10 2 50.000 V 0.001 V 0.03 % + 3 2 5 …

Fluke 189 — page 92

Model 187 & 189 Users M anual 7-8 Function Range Resolution Accuracy Resist ance 1 500.00 Ω 0.01 Ω 0.05 % + 10 3 5.0000 k Ω 0.0001 k Ω 0.05 % + 2 50.000 k Ω 0.001 k Ω 0.05 % + 2 500.00 k Ω 0.01 k Ω 0.05 % + 2 5.0000 M Ω 0.0001 M Ω 0.15 % + 4 2 5.000 M Ω up to 32.000 M Ω 0.001 M Ω 1.0 % + 4 2 32.0 M Ω up to 50.0 M Ω …

Fluke 189 — page 93

Specifications Detailed Accurac y Specific ations 7 7-9 Function Ranges Resolution Accuracy Capacitance 2 1.000 nF 0.001 nF 2% + 5 10.00 nF 0.01 nF 1 % + 5 100.0 nF 0.1 nF 1.000 µF 0.001 µF 10.00 µF 0.01 µF 100.0 µF 0.1 µF 1,000 µF 1 µF 10.0 mF 0.01 mF 50.00 mF 0.01 mF 3 3 % + 10 Diode Test 1 3.1000 V 0.0001 V 2 % + 20 1. For the 5,000 c ou …

Fluke 189 — page 94

Model 187 & 189 Users M anual 7-10 Function Range Resolution Accuracy Frequency 500.00 Hz 0.01 Hz 1 ± (0.0050 % + 1) 5.0000 kHz 0.0001 k Hz 50.000 kHz 0.001 k Hz 999.99 kHz 0.01 k Hz Duty Cy cle 10.00% to 90.00 % 0.01 % ± ((voltage range/input voltage) X 300 c ounts) 5,6 Pulse Width 499.99 ms 0.01 ms ± (3 % X (voltage range/input v oltage) + …

Fluke 189 — page 95

Specifications Frequency Counter Sens itivity 7 7-11 Frequency Counter Sensitivity Approximate VAC Sensitivity (RMS Sine Wave) 1 Input Range 15 Hz to 100 kHz 2 500 kHz 2 VAC Bandwidth 3 Approximate VDC Trigger Levels 1 VDC Bandwidth 3 50 mV 5 mV 10 mV 1 MHz -5 mV & 5 mV 1 M Hz 500 mV 20 m V 20 mV 1 MHz 5 mV & 65 mV 1 MHz 3000 mV 500 mV 2000 …

Fluke 189 — page 96

Model 187 & 189 Users M anual 7-12 Input Characteristics Function Input Impedance (Nominal) Volts, mV 10 M Ω , < 100 pF Common Mode Rejection Ratio Normal M ode Rejection DC Volts, m V >100 dB at dc, 50 Hz or 60 Hz ±0.1% >90 dB at 50 Hz or 60 Hz ± 0.1% AC Volts, mV > 90 dB dc to 60 Hz Full-Scale Voltage Open Circuit Test Voltage …

Точность измерения постоянного напряжения 0,025%

Разрядность 4 ¾ (макс. показания дисплея 50000)

Полоса пропускания для переменного напряжения 100кГц

Память для регистрации 1000 измерений

Измерение MIN/MAX  Расширенные диапазоны измерений: напряжение до 1мкВ, емкость до 50000мкФ, сопротивление до 500МОм.

Дисплей с отображением основного и дополнительного измеряемого параметра, времени, аналоговой шкалой и двойным уровнем подсветки.

Автоудержание (автоматически обновляет показания дисплея, когда на входе появляется стабильный сигнал, отличающийся от предыдущего стабильного более чем на 4%)

Отображение реального времени регистрации событий МИН/МАКС, Удержание, Автоудержание

Отключение автоматического выбора диапазона измерений

Режим относительных измерений (опорное значение появляется на втором индикаторе, относительное измерение на основном в абсолютных единицах или в процентах от опорного значения)

Режим “прозвонка”

Функция проверки полупроводниковых переходов

Автовыключение (устанавливается от 0 (режим отключен) до 24 часов). Не задействуется в режиме регистрации измерений, МИН/МАКС, Автоудержание.

Автовыключение подсветки (устанавливается от 0 (режим отключен) до 99 минут)

Индикатор разряда батарей