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Manual Fluke 187

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  • Fluke 187 - 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 187 - 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 187 - page 3

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

  • Fluke 187 - page 4

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

  • Fluke 187 - page 5

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

  • Fluke 187 - page 6

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

  • Fluke 187 - 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 187 - page 8

    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 187 - page 9

    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 187 - page 10

    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 187 - page 11

    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 187 - page 12

    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 187 - page 13

    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 187 - page 14

    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 187 - page 15

    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 187 - page 16

    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 187 - page 17

    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 187 - page 18

    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 187 - page 19

    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 187 - page 20

    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 187 - page 21

    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 187 - page 22

    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 187 - page 23

    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 187 - page 24

    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 187 - page 25

    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 187 - page 26

    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 187 - page 27

    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 187 - page 28

    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 187 - page 29

    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 187 - page 30

    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 187 - page 31

    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 187 - page 32

    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 187 - page 33

    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 187 - page 34

    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 187 - page 35

    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 187 - page 36

    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 187 - page 37

    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 187 - page 38

    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 187 - page 39

    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 187 - page 40

    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 187 - page 41

    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 187 - page 42

    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 187 - page 43

    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 187 - page 44

    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 187 - page 45

    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 187 - page 46

    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 187 - page 47

    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 187 - page 48

    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 187 - page 49

    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 187 - page 50

    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 187 - page 51

    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 187 - page 52

    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 187 - page 53

    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 187 - page 54

    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 187 - page 55

    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 187 - page 56

    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 187 - page 57

    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 187 - page 58

    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 187 - page 59

    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 187 - page 60

    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 187 - page 61

    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 187 - page 62

    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 187 - page 63

    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 187 - page 64

    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 187 - page 65

    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 187 - page 66

    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 187 - page 67

    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 187 - page 68

    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 187 - page 69

    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 187 - page 70

    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 187 - page 71

    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 187 - page 72

    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 187 - page 73

    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 187 - page 74

    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 187 - page 75

    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 187 - page 76

    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 187 - page 77

    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 187 - page 78

    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 187 - page 79

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

  • Fluke 187 - page 80

    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 187 - page 81

    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 187 - page 82

    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 187 - page 83

    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 187 - page 84

    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 187 - page 85

    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 187 - page 86

    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 187 - page 87

    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 187 - page 88

    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 187 - page 89

    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 187 - page 90

    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 187 - page 91

    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 187 - page 92

    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 187 - page 93

    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 ...

Manufacturer Fluke Category Welder

Documents that we receive from a manufacturer of a Fluke 187 can be divided into several groups. They are, among others:
- Fluke technical drawings
- 187 manuals
- Fluke product data sheets
- information booklets
- or energy labels Fluke 187
All of them are important, but the most important information from the point of view of use of the device are in the user manual Fluke 187.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Fluke 187, service manual, brief instructions and user manuals Fluke 187. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Fluke 187.

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A complete manual for the device Fluke 187, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Fluke 187 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Fluke 187.

A complete Fluke manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Fluke 187 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Fluke 187, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Fluke 187, that we can find in the current document
3. Tips how to use the basic functions of the device Fluke 187 - which should help us in our first steps of using Fluke 187
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Fluke 187
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Fluke 187 in a specific country, if it was not possible to solve the problem on our own.

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