Fluke 189 - Manuals

Model 187 & 189 Users Manual iv 6 Maintenance ................................................................................................................. 6-1 Introduction .................................................................................................................... 6-...

v List of Tables Table Title Page 1-1. Safety Information................................................................................................................. 1-2 1-2. International Electrical Symbols ..........................................................................................

vii List of Figures Figure Title Page 2-1. AC Volts Display ................................................................................................................... 2-22-2. Rotary Switch .........................................................................................................

Model 187 & 189 Users Manual viii 3-10. Temperature Measurement ................................................................................................... 3-153-11. AC Current Measurement.......................................................................................................

1-1 Chapter 1 Before You Start Safety Information The Fluke Model 187 and Model 189 True RMSMultimeters (hereafter referred to as the “meter”) complywith: • 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 Cat...

Model 187 & 189Users Manual 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 ormissing plastic. Pay particular attention t...

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 guards on the probes. • Connect the common test lead before you connect the live test lead. When you disconnect test leads,disconnect the live test l...

Model 187 & 189Users Manual 1-4 Symbols Symbols used on the meter and in this manual areexplained 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 releva...

2-1 Chapter 2 Getting Acquainted Introduction Although this manual describes the operation of bothModels 187 and 189, all illustrations and examplesassume use of Model 189. Additional capabilities withModel 189 are discussed in Chapter 4. These capabilitiesinclude the following: • An enhanced memory...

Model 187 & 189Users Manual 2-2 tc031f.eps Figure 2-1. AC Volts Display Battery Considerations The meter uses four AA alkaline batteries. The followingparagraphs describe several techniques used to conservebattery power. Automatic Power Off The display blanks and the meter goes into a “sleep”mod...

Getting Acquainted Battery Considerations 2 2-3 Automatic Backlight Off Press T to select the backlight level (low, high, or off.) In low or high, the backlight turns off automatically after agiven period. This period is also preset to 15 minutes andcan be set to a maximum of 99 minutes from the set...

Model 187 & 189Users Manual 2-4 Rotary Switch Turn the meter on by selecting any measurement function(identified with white letters around the rotary switch). Themeter presents a standard display for that function (range,measurement units, modifiers, etc.) The display may alsobe influenced by so...

Getting Acquainted Pushbuttons 2 2-5 Pushbuttons The buttons activate features that augment the functionselected with the rotary switch. The buttons are shown inFigure 2-3 and described in Table 2-2. Use the blue button ( % ) to access functions labeled in blue for some of the rotary switch position...

Getting Acquainted Pushbuttons 2 2-7 Table 2-1. Rotary Switch Positions (cont.) Position Rotary Switch Function % Blue Key Function I AC current measurements from 0 mA to 20.000 A none = AC current measurements from 0 µ A to 5000.0 µ A none K DC current measurements from 0 mA to 20.000 A AC over DC ...

Model 187 & 189Users Manual 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 primary display freezes, allowing time to press a seco...

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 positive pulse slope. • In ohms continuity, select beep on open. • In VIEW MEM, see Chapter 4 (Model 189). (none)...

Model 187 & 189Users Manual 2-10 Selecting the Range Press R to select either a fixed range or the autorange feature. Note You cannot use R in conductance, diode test, and temperature functions or with the REL,MIN MAX, and FAST MN MX features. Theseselections all use a specific fixed range. Auto...

Getting Acquainted Understanding the Display 2 2-11 • dB (in ac volts functions): the dBm or dBV value. • REL: the difference between the present reading anda stored reference reading. • Setup: various messages (see Chapter 5). • Overload conditions: OL displayed. • Error conditions. Secondary Displ...

Getting Acquainted Understanding the Display 2 2-13 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, negativevalues are to the left and positive to the ri...

Model 187 & 189Users Manual 2-14 Table 2-3. Display Features (cont.) Number Feature Description FASTMINMAXAVG FAST MN MX mode is enabled. ( O M ) Minimum reading displayed. Maximum reading displayed. Average reading displayed. ; Readings are being recorded in memory (Model 189 only.) ( O + D ) g...

Model 187 & 189Users Manual 2-16 Table 2-3. Display Features (cont.) Number Feature Description 51000AUTO MANUAL Range. Digits display range in use. f MS 88:88 Time Display. Used with HOLD, AutoHOLD, MIN MAX, FAST MN MX (SAVE, andLOGGING Model 189). Elapsed Time Display ( f on): shown in minutes...

Getting Acquainted Using the Input Terminals 2 2-17 Using the Input Terminals All functions except current use the * and COM inputs. Current functions use the inputs shown below: • I or K function: Use A and COM inputs from 400 mA to 20 A. Use mA/ µ A and COM for inputs ≤ 400 mA. • = or x function: ...

Model 187 & 189Users Manual 2-18 Using Display Hold Press Q to enter the Display Hold mode and freeze the present reading and its time stamp. New readings nowappear in the secondary display. See Figure 2-6. To exitDisplay Hold mode, press Q again. Note The bar graph and secondary display may sho...

Getting Acquainted Using AutoHOLD 2 2-19 Using AutoHOLD W Warning AutoHOLD mode does not capture unstableor noisy readings. Do not use AutoHOLDmode to determine that circuits are withoutpower. To enter AutoHOLD, press OQ (AutoHOLD). AutoHOLD mode freezes the present reading and its timestamp. New re...

Getting Acquainted Using FAST MN MX 2 2-21 Using FAST MN MX FAST MN MX can capture transient signal events as shortas 250 µs, but with decreased accuracy; only 3-1/2 displaydigits are allowed. Activate FAST MN MX by pressing O M . As with regular MIN MAX, you can then press M to cycle through maximu...

Model 187 & 189Users Manual 2-22 Using HOLD with MIN MAX or FAST MN MX You can enable the HOLD mode when in the MIN MAXmode is by pressing Q . No further minimum, maximum, or average updates occurwhile the HOLD mode is enabled. Exit HOLD mode by pressing Q a second time. Using Relative Mode (REL...

3-1 Chapter 3 Making Measurements Introduction Chapter 3 explains how to make measurements. Mostmeasurement functions can be selected by using therotary switch. White letters or symbols identify primary functions; blueletters or symbols identify alternative functions. Press theblue button to access ...

Model 187 & 189Users Manual 3-2 When measuring voltage, the meter acts like a 10 M Ω (10,000,000 Ω ) 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 ...

Making Measurements Measuring Voltage 3 3-3 dB Measurements in AC Volts Functions The two ac volts functions allow you to display readings asdeviations in dB (decibels) above or below an establishedlevel. Set up dB measurements with the following procedure: 1. Make an ac volts measurement to be used...

Model 187 & 189Users Manual 3-4 dB is calculated with the following formula:     = Vr Vx dB 10 log * 20 • For dBm, Vr is the voltage across the referenceresistance at 1 mW. For example, Vr would be0.7746 V with a 600 Ω reference resistance. • For dBV, the reference voltage (Vr) is 1 V. Mea...

Model 187 & 189Users Manual 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 ...

Making Measurements Measuring Resistance 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 LO...

Model 187 & 189Users Manual 3-8 Keep the following in mind when measuring resistance: • Because the meter’s test current flows through allpossible paths between the probe tips, the measuredvalue of a resistor in a circuit is often different fromthe resistor’s rated value. • The test leads can ad...

Model 187 & 189Users Manual 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...

Making Measurements Using Conductance for High Resistance Tests 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 T...

Model 187 & 189Users Manual 3-12 Measuring Capacitance Caution To avoid possible damage to the meter or tothe equipment under test, disconnect circuitpower and discharge all high-voltagecapacitors before measuring capacitance.Use the dc voltage function to confirm thatthe capacitor is discharged...

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...

Making Measurements Measuring Temperature 3 3-15 Measuring Temperature To measure temperature, set up the meter as shown inFigure 3-10. The meter begins temperature measurementin the degree units last used (Celsius ° C or Fahrenheit ° F). Once you have selected the temperature function, you canchang...

Model 187 & 189Users Manual 3-16 Measuring Current W Warning Never attempt an in-circuit currentmeasurement where the open-circuit potentialto earth is greater than 1000 V. You maydamage the meter or be injured if the fuseblows during such a measurement. Caution To avoid possible damage to the m...

Making Measurements Measuring Current 3 3-17 3. If you are using the A terminal, set the rotary switch to mA/A. If you are using the mA/ µ A terminal, set the rotary switch to µ A for currents below 5000 µ A (5 mA), or mA/A for currents above 5000 µ A. 4. Open the circuit path to be tested. Touch th...

Model 187 & 189Users Manual 3-18 The following are some tips for measuring current: • If the display shows LEAd5 and you are sure the meter is set up correctly, test the meter’s fuses asdescribed under "Testing the Fuses" in Chapter 6. • A current meter drops a small voltage across itsel...

Model 187 & 189Users Manual 3-20 Measuring DC Current To measure dc current, set up the meter as shown inFigure 3-12. You can view separate dc and ac amps signalcomponents. • Press % once to display ac current in the primary display and dc current in the secondary display(ac over dc). • Press % ...

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 LOGG...

Model 187 & 189Users Manual 3-22 Measuring Frequency Frequency is the number of cycles a signal completeseach second. The meter measures the frequency of avoltage or current signal by counting the number of timesthe signal crosses a threshold level each second. Figure 3-13 highlights the functio...

Making Measurements Measuring Duty Cycle 3 3-23 tc026f.eps Figure 3-14. Hz Display The meter beeps to indicate when a particular pushbuttonis not allowed when measuring frequency. The followingare some general rules. • Relative ( D ), Hold ( Q ), and MIN MAX ( M )can be used. • FAST MN MX ( O M ) ca...

Model 187 & 189Users Manual 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 Measurements

Making Measurements Measuring Pulse Width 3 3-25 To measure duty cycle, set up the meter to measurefrequency; then press N a second time. You can select the level the meter uses by pressing [ to trigger on the positive slope or ] to trigger on the negative slope. A typical duty cycle display is show...

4-1 Chapter 4 Using Memory & Communications Features Introduction Chapter 4 shows you how to use memory andcommunication features available on the meters. Note Memory, Logging, and Save features apply to the189 only. Types of Memory The meter has two types of memory data: saved readingsand logge...

Model 187 & 189Users Manual 4-2 Storing Saved Readings To add the current displayed reading to the savedreadings memory, press O R (SAVE). • 5AVEd appears briefly to confirm the operation and the index number display increments by one. • FULL appears if no room is available in the saved readings...

Using Memory & Communications Features Viewing Memory Data 4 4-3 Viewing Memory Data Use the following procedure to view memory data: Note Viewing memory data involves turning the rotaryswitch from its current function. Selections arenot retained when you turn the switch. To returnthe meter to t...

Using Memory & Communications Features Clearing Memory 4 4-5 Clearing Memory You can clear memory in two ways. • First, If the rotary switch is in the VIEW MEM position,you can press the blue button ( % ) to activate the CLEAR MEM function. CLr.? appears in the display. You are then prompted to ...

5-1 Chapter 5 Changing the Default Settings Introduction The meter allows you to change the default operatingconfiguration of the meter by changing setup optionsmade at the factory. Many of these setup options affect general meteroperations and are active in all functions. Others arelimited to one f...

Model 187 & 189Users Manual 5-2 Table 5-1. Function Specific Setup Selections Selection Precondition Option Choices ( < > ) Factory Default 000.0 ° C or 000.0 ° F Temperature ( w ) selected. Temperatureoffset adjust 000.0 ° to ± 100.0 ° C ( 180 . 0 ° F ) - Use q to increment or decrement d...

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 Display digits 8888 (4) or 88888 (5) Use < > to select. 88888 bLoFF Backlight time out MM:S...

Model 187 & 189Users Manual 5-4 Select and edit setup options as follows: • Turn the rotary switch to a measurement function: • Press O T to advance to the next setup option and save the present selection. • Press [ to increase or ] to decrease a value. • Press T ( l ) to go back to the previous...

Model 187 & 189Users Manual 5-6 Selecting Display Resolution(3 1/2 or 4 1/2 Digits) For most functions, you can choose whether the meterdisplays the reading in 3-1/2 or 4-1/2 digits. • The 3-1/2 digit setting provides lower resolution withfaster response time. • The 4-1/2 digit setting provides ...

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 stampsduring HOLD, AutoHOLD, MIN MAX, FAST MN MX,SAVE, and LOGGING operations. Hours and minutes to a maximum of 23:59 can be set. Note The meter uses elapsed time fo...

Model 187 & 189Users Manual 5-8 Returning to Factory Defaults Your meter comes with the setup options preset at thefactory. These factory settings are shown in Tables 5-1and 5-2. You can always return to these settings asfollows: 1. Press O T until Fcty appears in the display. 2. Press % to sele...

6-1 Chapter 6 Maintenance Introduction This chapter describes basic operator maintenance. Forcalibration and performance test information, order the187 & 189 Service Manual, PN 1584337. General Maintenance Periodically wipe the case with a damp cloth and milddetergent. Do not use abrasives or so...

Maintenance Replacing the Batteries 6 6-3 Replacing the Batteries Replace the batteries with four AA batteries (NEDA I5A orIEC LR6). W Warning To avoid false readings, which could lead topossible electric shock or personal injury,replace the batteries as soon as the batteryindicator ( B ) appears. R...

Maintenance Replacing the Fuses 6 6-5 Replacing the Fuses W Warning To avoid electrical shock or damage to themeter, only use replacement fuses specifiedin Table 6-1. Referring to Figure 6-2, examine or replace the meter’sfuses as follows: 1. Turn the rotary switch to OFF and remove the test leads f...

Model 187 & 189Users Manual 6-6 Table 6-1. User-Replaceable Parts Description Reference Designators Part Number Qty Access Door, Battery / Fuse MP14 666446 1 Tilt-Stand MP8 659026 1 Accessory 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 ...

7-1 Chapter 7 Specifications Safety and Compliances Maximum voltage between any terminal and earthground. 1000 V dc or rms ac 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 CategoryIV, Pollution Degree 2 *...

Model 187 & 189Users Manual 7-2 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 Temperatur...

Specifications Feature Summary 7 7-3 Feature Summary Feature Description Dual Digital Displays Analog Bar Graph Primary: 50,000 counts Secondary: 5,000 countBar graph: 51 segments, updates 40 times/second Backlight with 2 brightness levels Bright white backlight for clear readings in poorly lighted ...

Model 187 & 189Users Manual 7-4 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 µ A to 10 A (20...

Specifications Detailed Accuracy Specifications 7 7-5 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 le...

Model 187 & 189Users Manual 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 A 0.1 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 ...

Model 187 & 189Users Manual 7-8 Function Range Resolution Accuracy Resistance 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...

Specifications Detailed Accuracy Specifications 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...

Specifications Frequency Counter Sensitivity 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 MHz 500 mV 20 mV 20 mV 1...

Model 187 & 189Users Manual 7-12 Input Characteristics Function Input Impedance (Nominal) Volts, mV 10 M Ω , < 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 > 90 dB dc to 60 Hz Fu...