Fluke 187/189 True RMS Multimeter Calibration Manual
The Fluke 187/189 True RMS Multimeter is a powerful and versatile tool for a range of electrical and electronic measurements. It features a dual display, auto-ranging, true RMS capabilities, and a variety of measurement functions, including voltage, current, resistance, capacitance, diode, temperature, and frequency. These multimeters are designed for use in industrial, commercial, and residential applications. It's an ideal choice for technicians, engineers, and anyone who needs a reliable and accurate multimeter.
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187/189
True RMS Multimeter
riešenia na presné meranie™
Elso Philips Service; tel: +421 32 6582410 email: [email protected]
; web: www.elso.sk
PN 1584337
November 2000 Rev.1, 6/02
© 2000-2002 Fluke Corporation. All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies.
Calibration Manual
®
Manual Supplement
Manual Title: 187/189 Calibration
Part Number: 1584337
Print Date: http://www
November 2000
Revision/Date: 1, 6/02
Supplement Issue: 2
Issue Date:
Page Count:
4/07
1
This supplement contains information necessary to ensure the accuracy of the above manual. Enter the corrections in the manual if either one of the following conditions exist:
1. The revision letter stamped on the indicated PCA is equal to or higher than that given with each change.
2. No revision letter is indicated at the beginning of the change.
© 2003-2007 Fluke Corporation. All rights reserved. Printed in U.S.A.
x
187/189 Calibration Manual Supplement
Change #1
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On page 17, Table 3, replace the entry for 350.0
°C Input with:
Input Lower Limits Upper Limits
350.0
°C 345.5 °C
Change #2
On page 17, under Testing Temperature, replace steps 2, 4, and 5 with the following and add step and 8.
2. Set the 5520A for K-type thermocouple and an output of -10.0 °C.
4. Adjust the temperature offset, using the up and down arrow keys, until the offset on the Meter secondary display reads 0.0.
5. Enter the offset value by pressing the yellow button, then the backlight button.
8. If the Meter fails any of the Temperature Accuracy tests, perform the Temperature Calibration
Adjustment procedure.
4/07 1
LIFETIME LIMITED WARRANTY
Each Fluke 20, 70, 80, 170 and 180 Series DMM will be free from defects in material and workmanship for its lifetime. As
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used herein, “lifetime” is defined as seven years after Fluke discontinues manufacturing the product, but the warranty period shall be at least ten years from the date of purchase. This warranty does not cover fuses, disposable batteries, damage caused by use outside of the product’s specifications, or normal wear and tear of mechanical components. This warranty covers the original purchaser only and is not transferable.
For ten years from the date of purchase, this warranty also covers the LCD. Thereafter, for the lifetime of the DMM, Fluke will replace the LCD for a fee based on then current component acquisition costs.
To establish original ownership and prove date of purchase, please complete and return the registration card accompanying the product, or register your product on http://www.fluke.com
. Fluke will, at its option, repair at no charge, replace or refund the purchase price of a defective product purchased through a Fluke authorized sales outlet and at the applicable international price. Fluke reserves the right to charge for importation costs of repair/replacement parts if the product purchased in one country is sent for repair elsewhere.
If the product is defective, contact your nearest Fluke authorized service center to obtain return authorization information, then send the product to that service center, with a description of the difficulty, postage and insurance prepaid (FOB
Destination). Fluke assumes no risk for damage in transit. Fluke will pay return transportation for product repaired or replaced in-warranty. Before making any non-warranty repair, Fluke will estimate cost and obtain authorization, then invoice you for repair and return transportation.
THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR
PURPOSE, ARE EXPRESSED OR IMPLIED. FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, ARISING FROM ANY
CAUSE OR THEORY. AUTHORIZED RESELLERS ARE NOT AUTHORIZED TO EXTEND ANY DIFFERENT
WARRANTY ON FLUKE’S BEHALF. Since some states do not allow the exclusion or limitation of an implied warranty or of incidental or consequential damages, this limitation of liability may not apply to you. If any provision of this warranty is held invalid or unenforceable by a court or other decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability of any other provision.
Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
U.S.A.
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
2/02
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Table of Contents
Title Page
Removing and Reinserting the Circuit Board Assembly .............................. 11
Verification of the IR Communication Port.................................................. 17
Testing Voltage, Current, Resistance, Capacitance and Diode Functions.... 18
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List of Tables
Table
1.
2.
3.
4.
5.
Title Page
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List of Figures
Figure
5.
6.
7.
1.
2.
3.
4.
Title Page
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Introduction
W
Warning
To avoid shock or injury, do not perform the verification tests or calibration procedures described in this manual unless you are qualified to do so.
The information provided in this document is for the use of qualified personnel only.
Caution
The 187 & 189 Multimeters contain parts that can be damaged by static discharge.
Follow the standard practices for handling static sensitive devices.
The information in this manual deals with the Fluke Models 187 & 189 True RMS
Multimeters, (hereafter referred to as “the meter”). Information provided includes:
•
Precautions and safety information
•
Specifications
•
Basic maintenance (cleaning, replacing the battery and fuses)
•
Performance test procedures
•
Calibration and calibration adjustment procedures
•
Accessories and replaceable parts
For complete operating instructions, refer to the Model 187 & 189 Users Manual located on the 187/189 CD ROM.
Contacting Fluke
To order accessories, receive assistance, or locate the nearest Fluke distributor or Service
Center, call:
USA: 1-888-99-FLUKE (1-888-993-5853)
Canada: 1-800-36-FLUKE (1-800-363-5853)
Europe: +31 402-678-200
Japan: +81-3-3434-0181
Singapore: +65-738-5655
Anywhere in the world: +1-425-446-5500
Address correspondence to:
Fluke Corporation
P.O. Box 9090,
Everett, WA 98206-9090
USA
Fluke Europe B.V.
P.O. Box 1186,
5602 BD Eindhoven
The Netherlands
Visit us on the World Wide Web at:
www.fluke.com
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Precautions and Safety Information
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Warning
If this product is used in a manner not specified by the
http://www
manufacturer, the protection provided by the equipment may be impaired.
Read the “Safety Information” page before servicing this product.
In this manual, a Warning identifies conditions and actions that pose hazard(s) to the user; a Caution identifies conditions and actions that may damage the Meter or the test instruments.
International Symbols
International symbols used on the Meter and in this manual are explained in Table 1.
Symbol
Table 1. International Symbols
Meaning
Alternating current
Symbol
Earth ground
Meaning
Direct current
Alternating or direct current
Refer to the manual. Important information.
Inspected and licensed by TÜV
Product Services.
Battery
Conforms to VDE Standards
Fuse
Conforms to European Union directives
Conforms to relevant Canadian
Standards Association directives
Double insulated
Underwriters Laboratories, Inc.
True RMS Multimeter
Safety Information
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Safety Information
W
Warnings and Precautions
•
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.
•
Inspect the test leads for damaged insulation or exposed metal. Check the test leads for continuity. Replace damaged test leads before you use the Meter.
•
Do not use the Meter if it operates abnormally. Protection may be impaired. When in doubt, have the Meter serviced.
•
Do not operate the Meter around explosive gas, vapor, or dust.
•
Do not apply more than the rated voltage, as marked on the Meter, between terminals or between any terminal and earth ground.
•
Before use, verify the Meter’s operation by measuring a known voltage.
•
When measuring current, turn off circuit power before connecting the Meter in the circuit. Remember to place the Meter in series with the circuit.
•
When servicing the Meter, use only specified replacement parts.
•
Use caution when working above 30 V ac rms, 42 V peak, or 60 V dc. Such voltages pose a shock hazard.
•
Avoid working alone
.
•
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 lead first.
•
Remove test leads from the Meter before you open the battery door.
•
Do not operate the Meter with the battery door or portions of the cover removed or loosened.
•
To avoid false readings, which could lead to possible electric shock or personal injury, replace the batteries as soon as the low battery indicator (
M
) appears.
•
Use only type AA batteries, properly installed in the Meter case, to power the
Meter.
Caution
To avoid possible damage to the Meter or to the equipment under test, follow these
guidelines:
•
Disconnect circuit power and discharge all high-voltage capacitors before testing resistance, continuity, diodes, or capacitance.
•
Use the proper terminals, function, and range for your measurements.
•
Before measuring current, check the Meter's fuses and turn power OFF to the circuit before connecting the Meter to the circuit.
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Specifications
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Accuracy
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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. AC crest factor can be up to 3.0 at full-scale, 6.0
at half-scale, except the 3000 mV and 1000 V ranges where it is 1.5 at full scale, 3.0 at halfscale.
Feature Summary
Feature Description
Dual Digital Displays
Analog Bar Graph
Secondary: 5,000 count
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
AC+DC true rms, ac rms specified to 100 kHz dBm, dBV
AutoHOLD
Continuity / Open test
Meter automatically selects best range - instantly
Choices for AC only, AC and DC dual display, or AC+DC readings
User selectable impedance references for dBm
Holds readings on display
Beeper sounds for resistance readings below threshold, or to indicate a momentary open circuit
51 segments for peaking and nulling
Fast Bar Graph
Duty cycle / Pulse width
MIN MAX Mode
Measure signal on or off time in % or milliseconds
Record maximum, minimum, and average values.
24-hour clock for MAX or MIN, elapsed time for AVG.
FAST MN MX captures peaks to 250
µ sec.
FAST MN MX with 24-hour time stamp
Closed-Case Calibration
Battery / Fuse Access Door
Hi-Impact Overmolded Case
No internal adjustments needed
Battery or fuse replaceable without voiding calibration
Protective holster features
True RMS Multimeter
Basic Specifications
Basic Specifications
Function
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DC Voltage
http://www
AC Voltage, true RMS
Ranges/Description
0 to 1000 V
2.5 mV to 1000 V – 100 kHz bandwidth
Basic Accuracy
DC Current
AC Current, true RMS
Resistance
Conductance
Capacitance
Diode Test
Temperature
Frequency
LOGGING Intervals
(Model 189 only)
SAVE Readings
(Model 189 only)
DC voltage: 0.025 %
AC voltage: 0.4 %
0 to 10 A (20 A for 30 seconds)
25
µ
A to 10 A (20 A for 30 seconds)
0 to 500 M
Ω
0 to 500 nS
0.001 nF to 50 mF
3.1 V
−
200
°
C to 1350
°
C (
−
328
°
F to 2462
°
F)
0.5 Hz to 1000 kHz
At least 288 intervals may be stored. Up to 700 unstable event values (see
AutoHold) are automatically added to LOGGING memory for viewing only through optional PC software. Additional intervals will be logged up to 995 if the signal is stable.
Up to 100 readings may be saved by the user in a memory separate from
LOGGING memory. These readings may be viewed using VIEW MEM.
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Detailed Accuracy Specifications
Accuracy is specified for a period of one year after calibration, at 18 to 82
°
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°
C to 28
°
F), with relative humidity to 90 %. Accuracy specifications are given as:
C (64
°
F
±
( [ % 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. AC crest factor can be up to 3.0 at full-scale, 6.0 at half-scale except the
3000 mV and 1000 V ranges where it is 1.5 at full scale, 3.0 at half-scale.
Function
AC mV
1, 2
AC V dBV
1, 2
Range Resolution
45 Hz-
1 kHz
20 Hz-
45 Hz
Accuracy
1 kHz-
10 kHz
10 kHz-
20 kHz
50.000 mV 0.001 mV 0.4 % + 40 2 % + 80 5 % + 40
500.00 mV 0.01 mV
3000.0 mV 0.1 mV
0.4 % + 40 2 % + 80 5 % + 40
5.5 % + 40 15 % + 40
5.5 % + 40 8 % + 40
0.4 % + 40 2 % + 80 0.4 % + 40 1.5 % + 40 8 % + 40
5.0000 V
50.000 V
500.00 V
0.0001 V
0.001 V
0.01 V
0.4 % + 40
0.4 % + 40
0.4 % + 40
2 % + 80
2 % + 80
2 % + 80
0.4 % + 40
0.4 % + 40
0.4 % + 40
1.5 % + 40
1.5 % + 40
Not specified
8 % + 40
8 % + 40
Not specified
1000.0 V
−
52 to
−
6
−
6 to +34
0.1 V
0.01 dB
0.01 dB
+34 to +60 0.01 dB
0.4 % + 40 2 % + 80 0.4 % + 40 Not specified
0.1 dB 0.2 dB 0.5 dB 0.5 dB
0.1 dB
0.1 dB
0.2 dB
0.2 dB
0.1 dB
0.1 dB
0.2 dB
Not specified
Not specified
1.4 dB
0.8 dB
Not specified
1. For the 5,000 count mode, divide the number of least significant digits (counts) by 10.
2. A residual reading of 8 to 180 digits with leads shorted, will not affect stated accuracy above 5 % of range.
20 kHz-
100 kHz
Function
AC
µ
A
AC mA
Range
500.00
µ
A
5,000.0
µ
A
50.000 mA
Resolution
0.01
µ
A
0.1
µ
A
0.001 mA
45 Hz-
1 kHz
0.75 % + 20
0.75 % + 5
0.75 % + 20
20 Hz-
45 Hz
1 % + 20
1% + 5
1% + 20
Accuracy
1 kHz-
20 kHz
0.75 % + 20
0.75 % + 10
0.75 % + 20
20 kHz-
100 kHz
6 % + 40
2 % + 40
9 % + 40
400.00 mA 0.01 mA 0.75 % + 5 1% + 5 1.5 % + 10 4 % + 40
AC A 5.0000 A 0.0001 A 1.5 % + 20 1.5% + 20 6 % + 40 Not specified
10.000 A
1
0.001 A 1.5 % + 5 1.5% + 5 5 % + 10 Not specified
1. 10 A continuous up to 35 °C, less than 10 minutes 35 °C to 55
°C.
20 A overload for 30 seconds maximum.
True RMS Multimeter
Detailed Accuracy Specifications
Function
DC mV
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50.000 mV http://www
500.00 mV
Accuracy
Resolution DC
0.001 mV 0.1% + 20
0.01 mV 0.03 % + 2
Accuracy Dual Display AC or AC+DC
3
20 Hz-
45 Hz
45 Hz -
1 kHz
1 kHz-
20 kHz
2 % + 80 0.5 % + 40 6 % + 40
DC V
DC
µ
A
DC mA
3000.0 mV
5.0000 V
50.000 V
500.00 V
1000.0 V
500.00
µ
A
5,000
µ
A
50.000 mA
400.00 mA
0.1 mV 0.025 % + 5
0.0001 V 0.025 % + 10
2
0.001 V
0.01 V
0.03 % + 3
2
0.1 % + 2
2
0.1 % + 2
2
0.1 V
0.01
µ
A
0.1
µ
A
0.25 % + 20
0.25 % + 2
0.001 mA 0.15 % + 10
0.01 mA 0.15 % + 2
1 % + 20
1 % + 10
1 % + 20
1 % + 10
1.0 % + 20
0.75 % + 10
0.75 % + 20
1 % + 10
2 % + 40
Not specified
Not specified
2 % + 40
2 % + 40
2 % + 40
3 % + 40
DC A 5.0000 A 0.0001 A 0.5 %+ 10 2 % + 20 2 % + 20 6 % + 40
10.000 A
1
0.001 A 0.5 %+ 2 1.5 % + 10 1.5 % + 10 5 % + 10
1. 10 A continuous up to 35 °C, less than 10 minutes 35 °C to 55 °C. 20 A overload for 30 seconds maximum.
2. 20 counts in dual display DC or AC+DC.
3. See AC conversions notes for AC mV and V
Function
Resistance
1
Range
500.00
Ω
5.0000 k
Ω
50.000 k
Ω
500.00 k
Ω
5.0000 M
Ω
30.000 M
Ω
100.0 M
Ω
500.0 M
Ω
Resolution
0.01
Ω
0.0001 k
Ω
0.001 k
Ω
0.01 k
Ω
0.0001 M
Ω
0.001 M
Ω
0.1 M
Ω
0.1 M
Ω
Accuracy
0.05 % + 10
3
0.05 % + 2
0.05 % + 2
0.05 % + 2
0.15 % + 4
2
1 % + 4
2
3 % + 2
4
10 % + 2
4
Conductance 50.00 nS 0.01 nS 1 % + 10
1. For the 5,000 count mode, divide the number of least significant digits (counts) by 10.
2. For relative humidity greater than 70 %, resistance accuracy is 0.5 % over 1 M
Ω
and 2.5 % over 10 M
Ω
.
3. Using relative mode (REL
∆
) to zero residual reading.
4. To ensure stated accuracy, switch to conductance mode and verify that the open circuit reading is less than
0.10 nS.
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Function
Capacitance
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Ranges
1.000 nF
10.00 nF
100.0 nF
1.000 µF
10.00 µF
0.001 nF
0.01 nF
0.1 nF
0.001 µF
0.01 µF
Resolution Accuracy
2% + 5
1 % + 5
100.0 µF
1,000 µF
0.1 µF
1 µF
10.0 mF 0.01 mF
0.01 mF
3
50.00 mF 3 % + 10
Diode Test
1
3.1000 V 0.0001 V 2 % + 20
1. For the 5,000 count mode, divide the number of least significant digits (counts) by 10.
2. For film capacitor or better, using Relative mode (REL
∆
) to zero residual on 1.000 nF and 10.00 nF ranges.
3. Least significant digit not active above 10 mF.
Function
Frequency
Range
500.00 Hz
5.0000 kHz
50.000 kHz
Resolution
0.01 Hz
1
0.0001 kHz
0.001 kHz
±
Accuracy
(0.0050 % + 1)
999.99 kHz 0.01 kHz
Duty Cycle
Pulse Width
10.00% to 90.00 %
499.99 ms
0.01 %
0.01 ms
±
((voltage range/input voltage) X 300 counts)
5,6
±
(3 % X (voltage range/input voltage) + 1 count)
5,6
Temperature
MIN MAX
AVG
999.9 ms
−
−
200 to +1350
328 to +2462
°
°
C
F
0.1 ms
0.1
°
C
0.1
°
F
Response: 100 ms to 80 %
±
( 1% of reading + 1
°
C)
2,3
±
( 1% of reading + 1.8
°
F)
2,3
Specified accuracy
±
12 counts for changes > 200 ms in duration. (
±
40 counts in AC for changes > 350 ms and inputs > 25 % of range)
250
µ s
4
FAST MN MX Specified accuracy ±100 counts up to
5,000 count (full range) reading. For higher peak readings (to 20,000 counts), specified accuracy
±
2% of reading.
1. Reading will be 0.00 for signals below 0.5 Hz.
2. Accuracy specification is relative to the user-adjustable temperature offset, and assumes ambient temperature
stable to
±
1
°
C.
3. For ambient temperature changes of
±
5
°
C, rated accuracy applies after 1 hour.
4. For repetitive peaks; 2.5 ms for single events. Use DC function settings below 20 Hz. 50 mV range not specified.
5. Frequency greater than 5 Hz, except for VDC, 500 mVDC and 3000 mVDC functions; 0.5 Hz to 1 kHz. Signals
centered around trigger levels.
6. Range/input ratios also apply to current functions. 500 counts or 5 % for 10 A ranges.
8
True RMS Multimeter
Frequency Counter Sensitivity
Frequency Counter Sensitivity
Input
Range
50 mV
500 mV
3000 mV
5 V
50 V
100 kHz
5 mV
20 mV
500 mV
0.5 V
5 V
2
Wave)
1
500 kHz
2
10 mV
20 mV
2000 mV
2.0 V
5.0 V
VAC
Bandwidth
1 MHz
1 MHz
800 kHz
950 kHz
1 MHz
3
Approximate
VDC Trigger
Levels
1
-5 mV & 5 mV
5 mV & 65 mV
140 mV & 200 mV
1.4 V & 2.0 V
0.5 V & 6.5 V
VDC Bandwidth
1 MHz
1 MHz
90 kHz
14 kHz
> 400 kHz
500 V 20 V 20 V 1 MHz 5 V & 65 V > 400 kHz
1000 V 100 V 100 V > 400 kHz 5 V & 65 V > 400 kHz
1. Maximum input = 10 x Range (1000 V max). Noise at low frequencies and amplitudes may affect accuracy.
2. Useable at reduced sensitivity to 0.5 Hz and 1000 kHz.
3. Typical frequency bandwidth with full scale (or maximum 2 X 10
7
V-Hz product) RMS sine wave.
3
Burden Voltage (A, mA, µA)
Function
mA -
µ
A
A
Range
500.00
µ
A
5,000
µ
A
50.000 mA
400.00 mA
5.0000 A
10.000 A
Burden Voltage (typical)
102
µ
V /
µ
A
102
µ
V /
µ
A
1.8 mV / mA
1.8 mV / mA
0.04 V / A
0.04 V / A
Input Characteristics
Function
Volts, mV
DC Volts, mV
AC Volts, mV
Ohms
Diode Test
Ohms
Diode Test
500
Ω
1 mA
Input Impedance (Nominal)
10 M
Ω
, < 100 pF
Common Mode Rejection Ratio
>100 dB at dc, 50 Hz or 60 Hz ±0.1%
Normal Mode Rejection
>90 dB at 50 Hz or 60 Hz
±
0.1%
> 90 dB dc to 60 Hz
Open Circuit Test Voltage
5 k
Ω
100
µ
A
Full-Scale Voltage
To 5 M
Ω
30 M
Ω
+ nS
500 mV 3.1 V < 5 V
< 5 V
Typical Short-Circuit Current
50 k
Ω
10
µ
A
500 k
Ω
1
µ
A
1 mA typical
5 M
Ω
0.1
µ
A
3.1000 V
30 M
0.1
µ
Ω
A
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Calibration Manual
Required Equipment
Required equipment is listed in Table 2. If the recommended models are not available, equipment with equivalent specifications may be used.
Equipment
Calibrator
Thermocouple Adapter
Accessory
K-type Thermocouple
Serial Cable, Infrared/W IR
Cable Adapter
87/89-IV, 187/189
Service Software
Table 2. Required Equipment
Required Characteristics
AC Voltage Range: 0-1000 Vac
Accuracy: + 0.1 %
Frequency Range: 20 Hz – 100 kHz
Accuracy: +3 %
DC Voltage Range: 0-1000 Vdc
Accuracy: + 0.006 %
Current Range: 0-10A
Accuracy: AC mA - +0.18 %
AC A - + 0.38 %
Frequency range: 1 kHz – 20 kHz
DC mA - + 0.06 %
DC A - + 0.125 %
Frequency Source: 500 Hz-20 kHz
Accuracy: + 0.00125 %
Amplitude: 1 Volt
Accuracy: + 5 %
Ohms Range: 0
Ω
- 50 M
Ω
Accuracy: + 0.0125 %
Capacitance Range: 110.0 nF & 11.00
µ
F
Accuracy: +0.25%
Temperature Range: -10 to 350
°
C
Accuracy: 0.3%
K-type
K-type, mini-plug on both ends
Recommended
Model
Fluke 5520A
Fluke 80AK
N/A
Fluke P/N 1590638
Fluke P/N 676152
10
True RMS Multimeter
Basic Maintenance
Basic Maintenance
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Warning
To avoid electrical shock or personal injury, remove the test
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leads and any input signals before opening the case or replacing the battery or fuses. To prevent damage or injury, install ONLY batteries or fuses specified for this product.
Opening the Meter Case
Caution
To avoid unintended circuit shorting, always place the uncovered Meter assembly on a protective surface. When the case of the Meter is open, circuit connections are exposed.
To open the Meter case, do the following:
1.
Disconnect test leads from any live source, turn the rotary switch to
OFF
, and remove the test leads from the front terminals.
2.
Remove the battery door by using a flat-blade screwdriver to turn the battery door fasteners 1/4-turn counterclockwise.
3.
The case bottom is secured to the case top by four screws, one at each corner.
Remove the screws with a Phillips-head screwdriver.
4.
Pull the two halves of the case apart.
Removing and Reinserting the Circuit Board Assembly
The circuit board assembly must be removed to access and replace the LCD.
Caution
The circuit board is extremely susceptible to contamination.
Handle it by the input receptacle, fuse clips or edges of the board only. You can use clean surgical gloves to help avoid contamination.
1.
Open the Meter case and remove the case bottom to access the circuit board.
2.
Remove the two Phillips-head screws securing the circuit board to the case top and lift it out carefully to avoid contamination.
3.
To reinsert the circuit board, simply place it into the case top with the LCD display showing through the window.
4.
Carefully replace the two Phillips-head screws that connect the circuit board to the case top.
Caution
Do not over-torque the two Phillips-head screws when you reconnect the circuit board to the case top. Doing so may create shielding problems and cause the Meter to give incorrect readings.
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Calibration Manual
Replacing the LCD
If you need to replace the LCD, you will find it easier to leave the LCD assembly
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front of the LCD assembly.
http://www
1.
Remove the circuit board as described under “Removing and Reinserting the Circuit
Board Assembly.”
2.
Carefully insert the tip of a thin screwdriver under the LCD mask at the top of the display as shown in Figure 1.
LCD Mask
LCD aau05f.eps
Figure 1. Removing LCD Mask to Access LCD
3.
Lift up the LCD mask gently with the screwdriver blade to loosen the mask from the assembly. Be careful to press upward, not inward toward the LCD. By hand, tilt the
LCD mask upward to release.
4.
Replace the LCD. The LCD must be centered on the platform between the brackets before you replace the LCD mask. If the LCD is improperly aligned, the display may show missing segments or meaningless readings.
5.
Reattach the LCD mask by pressing it over the LCD until it snaps into place.
12
True RMS Multimeter
Basic Maintenance
Reassembling the Meter Case
To reassemble the Meter case, do the following:
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1.
Verify that the rotary switch is in the
OFF
position.
2.
Reinsert the circuit board by placing it into the case top with the LCD showing through the window. Carefully replace the two Phillips-head screws that connect the circuit board to the case top.
Caution
Do not over-torque the two Phillips-head screws when you reconnect the circuit board to the case top. Doing so may create shielding problems and cause the Meter to give incorrect readings.
3.
Hold the Meter face down and place the case bottom on the case top. Make sure the backlight cable located on the back of the LCD assembly is not caught between the case halves.
4.
Reinstall the four screws and the battery door.
5.
Secure the battery door by turning the fasteners 1/4-turn clockwise.
6.
Go to the “Performance Test” section in this document, and perform the procedures described.
Testing Fuses (F1 and F2)
Before measuring current, test the appropriate fuse as shown in Figure 2. If the tests give readings other than those shown, have the Meter serviced.
W
Warning
To avoid electrical shock or personal injury, remove the test leads and any input signals before replacing the battery or fuses. To prevent damage or injury, install ONLY specified replacement fuses with the amperage, voltage, and speed ratings shown in the specifications.
13
187/189
Calibration Manual
Replace F2 if " or " displayed
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189
LOGGING MULTIMETER
A
10A MAX
FUSED
mA
A
400mA
FUSED dB
V
SETUP ac+dc
V
ac+dc
mV
dB
mV
AutoHOLD
HOLD
FAST MN MX
MIN MAX
LOGGING
REL
CANCEL
Hz
% ms
SAVE
RANGE nS
NO
C
F
A mA
OFF
A
A
ac+dc
A
YES
COM
CAT
1000V
TEMPERATURE
V
A mA
Replace F1 if " or " displayed
189
LOGGING MULTIMETER
A
10A MAX
FUSED
mA
A
400mA
FUSED
SETUP
AutoHOLD
HOLD
FAST MN MX
MIN MAX
LOGGING
REL
CANCEL
Hz
% ms nS
NO
YES ac+dc
V
ac+dc
mV
dB
mV
C
F
dB
V
OFF
A
A mA
ac+dc
A
COM
CAT
1000V
TEMPERATURE
V
A mA
ach038f.eps
Figure 2. Testing the Current Fuses
Replacing Fuses
W
Warning
To avoid electrical shock, remove the test leads and any input signals before replacing the battery or fuses. To prevent damage or injury, INSTALL ONLY specified fuses and batteries.
To replace the fuses, refer to Figure 3 and do the following:
1.
Turn the rotary switch to
OFF
and remove the test leads from the terminals
2.
Remove the battery access door by using a standard-blade screwdriver to turn the battery door fasteners one-quarter turn counterclockwise.
3.
Remove either fuse by gently prying one end loose, then lifting the fuse out of the fuse contacts.
4.
Install ONLY specified fuses.
5.
Reinstall the battery door. Secure the door by turning the fasteners one-quarter turn clockwise.
Replacing the Batteries
The Meter is powered by four AA batteries (NEDA 15A or IEC LR6).
Caution
Be sure to observe proper polarity when replacing batteries.
Incorrect battery polarity may seriously damage the Meter.
14
True RMS Multimeter
Basic Maintenance
To replace the batteries, refer to Figure 3 and do the following:
1.
Turn the rotary switch to
OFF
and remove the test leads from the terminals.
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2.
Remove the battery door by using a standard-blade screwdriver to the turn the
3.
Replace the batteries, observing proper polarity. Replace the battery door and secure it by turning the fasteners one-quarter turn clockwise.
F2
F1 tc037f.eps
Figure 3. Battery and Fuse Replacement
Cleaning
W
Warning
To avoid electrical shock or damage to the Meter, never allow water inside the case. To avoid damaging the housing, never apply solvents to the Meter.
Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives or solvents.
Dirt or moisture in the input terminals can affect readings and can falsely activate the
Input Alert™ feature. Clean the terminals as follows:
1.
Turn the Meter off and remove all test leads.
2.
Shake out any dirt that may be in terminals.
3.
Soak a new swab with alcohol. Clean each terminal with the swab.
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Calibration Manual
Performance Tests
The following performance tests will ensure that the Meter is in proper operating condition and will check the accuracy of each meter function against its specifications.
http://www minimum specification given in Table 1.
If the Meter fails any of these tests, it needs calibration adjustment or repair.
Testing the Display
Push down the
Q
button and simultaneously turn the Meter on. Compare the display with the example in Figure 4. Check all segments for clarity and contrast.
16 aau02f.eps
Figure 4. Display Test
Backlight Test
To test the backlight, press the
T
button twice. Note that the backlight comes on at two different intensity levels.
Current Terminal Sensing Test
This test determines whether or not the Input Alert™ beeper is functioning properly.
Note
Before conducting this test, make sure the beeper is not disabled in setup.
1.
Turn the rotary switch to the AC V function. Press the backlight button twice to turn the backlight to the highest intensity.
2.
Turn the rotary switch to all functions, except current functions. Note that the beeper does not come on.
3.
Turn the rotary switch to the DC mA position. Insert a test lead into the mA terminal. Note that the beeper does not emit a continuous chirp.
Note
As the test lead is inserted, the Meter may produce a single chirp. This is acceptable.
True RMS Multimeter
Performance Tests
Keypad Test
To test the keypad, turn the Meter to AC V and push each button separately. Each button
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Reset the Meter by turning it
Off
, and then back
On
.
Verification of the IR Communication Port
Note
If you are using MET/CAL to do performance testing, it is not necessary to perform this verification test.
1.
Connect the Infrared Serial Cable to the com port of a PC.
2.
Connect the Infrared Serial Cable to the IR Cable Adapter and insert into the
187/189 accessory mount so that it is flush with the IR adapter window. Turn the
Meter rotary switch to DC V.
3.
Install Fluke 87/89-IV, 187/189 Service Software, P/N 676152.
4.
Apply 1 V dc to the
V
eG terminal.
5.
The display reading should appear in text box of PC.
Note
If the PC indicates that the Meter is not connected, ensure that the com port is correct and that the IR Serial Cable and adapter is aligned with the
IR window.
Testing Temperature
Connect K-type thermocouple and Fluke 80Ak to the temperature input on the Meter.
Connect the other end to the 5520A TC output. Allow connections to stabilize for 30 seconds before proceeding.
1.
Turn the rotary switch to the temperature function.
2.
Set the 5520A for K-type thermocouple and an output of 23
°
C.
3.
Enter the Meter Setup mode (press yellow button, then backlight button).
4.
Adjust the temperature offset until the temperature on the Meter primary display matches the 5520A output temperature (23
°
C). Use the blue shift button and backlight button to advance digit. Use the up and down arrow keys to edit digit.
5.
Enter an offset value by pressing the yellow button, then the backlight button.
6.
Exit Setup mode by pressing the yellow button, then the
CANCEL
button.
7.
Perform the steps in Table 3.
Table 3. Temperature Test Input and Display
Input
-10.0
0.0
350.0
°
°
°
C
C
C
Lower Limit
-11.1
°
C
-1.0
°
C
345.0
°
C
Display
Upper Limit
-8.9
°
C
1.0
°
C
355.0
°
C
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187/189
Calibration Manual
Testing Voltage, Current, Resistance, Capacitance and Diode Functions
To verify the accuracy of Meter functions, do the following.
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1.
Connect the Calibrator to the
V
eG and COM inputs on the Meter.
2.
Turn the rotary switch to the function listed in each step.
3.
Apply the input from the steps listed in Table 4.
4.
Compare the reading on the Meter display with the display reading in Table 4.
5.
If the display reading falls outside of the range shown in Table 4, the Meter does not meet specification.
6.
Repeat steps 2 through 4 for the remaining inputs shown in Table 4.
Table 4. Performance Test Steps
Step
7
8
5
6
1
2
3
4
9
10
11
Function
AC V
AC V
AC V
AC V
AC V
AC V
AC V
AC V
AC mV
AC mV
AC mV
Range
5.0000 V
5.0000 V
5.0000 V
50.000 V
50.000 V
50.000 V
500.00 V
1000.0 V
50.000
50.000
50.000
1
Input Level
0.25 V
5 V
5 V
50 V
50 V
50 V
500 V
500 V
2.5 mV
50 mV
50 mV
Frequency or
Model
100 kHz
20 kHz
100 kHz
700 Hz
20 kHz
100 kHz
65 Hz
65 Hz
100 kHz
20 kHz
100 kHz
Lower
Limit
0.2260
Display
2
Upper
Limit
0.2740
4.9210
4.5960
49.760
49.210
45.960
497.60
494.0
2.085
47.210
42.460
5.0790
5.4040
50.240
50.790
54.040
502.40
506.0
2.915
52.790
57.540
12
13
14
15
16
AC mV
AC mV
AC mV
Frequency
Duty Cycle
500.00 mV
3000.0 mV
3000.0 mV
50.000 kHz
3.0000 V
500 mV
3 V
3 V
1 V
10 kHz
20 kHz
100 kHz
20 kHz
500 Hz
474.60
2951.0
2756.0
19.998
21.82
525.40
3049.0
3244.0
20.002
38.18
17
18
19
20
DC V
DC V
DC V
DC V
5.0000 V
5.0000 V
5.0000 V
50.000 V
2.2 Vp-p,
@30%
Sq. wave short
5 V
-5 V
-50 V
-0.0010
4.9977
-4.9977
-49.982
0.0010
5.0023
-5.0023
-50.018
21
22
DC V
DC V
500.00 V
1000.0 V
-500 V
-500 V
-499.48
-499.3
-500.52
-500.7
1. Do not rely on autoranging for all tests. Some test steps will require manual ranging.
2. Must allow for source and meter settling before recording reading.
3. Wait at least 60 seconds for source and meter to settle before recording reading.
4. Using Relative Mode (REL) to zero residual reading (apply 0
Ω
and allow UUT to settle for 45 seconds before pushing REL).
18
True RMS Multimeter
Performance Tests
Table 4. Performance Test Steps (cont.)
Step
27
28
29
23
24
25
26
Function
http://www
AC&DC
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DC mV
DC mV
DC mV
DC mV
DC mV
DC mV
Range
50.000 V
50.000
50.000
50.000
500.00 mV
500.00 mV
3000.0 mV
30
31
DC mV
AC+DC
3000.0 mV
3000.0 mV
Connect 5520A for 2 Wire Comp
32
33
34
35
36
37
38
Ohms
Ohms
Ohms
Ohms
Ohms
Ohms
Ohms
500.00
Ω
500.00
Ω
5.0000 k
Ω
50.000 k
Ω
500.00 k
Ω
5.0000 M
Ω
30.000 M
Ω
39 Ohms 500.0
1
43
44
45
Remove 2 Wire Comp
40 nS 50.00 nS
41 nS 50.00 nS
Remove Test Leads from UUT
42 Capacitance 1.100 nF
Capacitance
Capacitance
Diode Test
110.0 nF
11.00 uF
3.1000 V
Input Level
50 V
0 mV
3
50 mV
-50 mV
0 V
500 mV
+2 V
-3 V
1 V
0
Ω 4
500
Ω
5 k
Ω
50 k
Ω
500 k
Ω
5 M
Ω
30 M
Ω
100 M open
100 M open
0.1 uF
5 uF
1 k
Ω
Ω
Ω
Frequency
20 kHz
20 kHz
-0.10
499.65
4.9973
49.973
499.73
4.9921
29.696
89.8
Lower
Limit
48.960
-0.020
Display
2
Upper
Limit
51.040
+0.020
49.930
-49.930
-0.02
499.83
1999.0
-2998.7
976.0
50.070
-50.070
0.02
500.17
2001.0
-3001.3
1024.0
-0.10
9.80
+0.10
10.20
98.5
4.90
0.9000
<0.070
101.5
5.10
1.1000
0.10
500.35
5.0027
50.027
500.27
5.0079
30.304
110.2
46
47
AC mA
AC mA
50.000 mA
500.00 mA
2.5 mA
329 mA
1 kHz
10 kHz
2.461
323.96
2.539
334.04
48 AC uA 500.00 uA 500 uA 1 kHz 496.05
503.95
1. Do not rely on autoranging for all tests. Some test steps will require manual ranging.
2. Must allow for source and meter settling before recording reading.
3. Wait at least 60 seconds for source and meter to settle before recording reading.
4. Using Relative Mode (REL) to zero residual reading (apply 0
Ω
and allow UUT to settle for 45 seconds before pushing REL).
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Calibration Manual
Table 4. Performance Test Steps (cont.)
Step
53
54
55
49
50
51
52 http://www
Function
AC uA
DC mA
DC mA
DC mA
DC mA
DC uA
DC uA
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Range
5000.0 uA
50.000 mA
50.000 mA
50.000 mA
500.00 mA
500.00 uA
-500.00 uA
1
Input Level
1.5 mA
0 A
50 mA
-50 mA
-329.00 mA
500 uA
-500 uA
Frequency or
Model
1 kHz
Lower
Limit
1488.2
Display
2
Upper
Limit
1511.8
-0.010
49.915
-49.915
0.010
50.085
-50.085
-328.49
498.55
-498.55
-329.51
501.45
-501.45
60
61
62
56
57
58
59
DC uA
DC uA
AC A
AC A
DC A
DC A
DC A
5000 uA
500.00 uA
5.0000 A
5.0000 A
5.0000 A
5.0000 A
-5.0000 A
-5 mA
0 A
250 mA
250 mA
0 A
5 A
-5 A
1 kHz
20 kHz
-4987.3
-0.2
0.2442
0.2310
-0.0010
4.9740
-4.9740
-5012.7
0.2
0.2558
0.2690
0.0010
5.0260
-5.0260
63 DC A 10.000 A -6 A -5.968
-6.032
64 AC A 10.000 A 6 A 1 kHz 5.905
6.095
1. Do not rely on autoranging for all tests. Some test steps will require manual ranging.
2. Must allow for source and meter settling before recording reading.
3. Wait at least 60 seconds for source and meter to settle before recording reading.
4. Using Relative Mode (REL) to zero residual reading (apply 0
Ω
and allow UUT to settle for 45 seconds before pushing REL
)
.
20
True RMS Multimeter
Calibration
Calibration
Calibrate the Meter once a year to ensure that it performs to specifications.
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Before you begin the calibration procedure, locate the recessed calibration button on the by a seal. Carefully puncture the seal with a calibration tool to access the calibration button. See Figure 5.
Calibration Button aau04f.eps
Figure 5. Locating Recessed Calibration Button
Keypad Interface
To start the calibration procedure, turn the rotary switch to the DC mV position, then press and hold the recessed calibration button on the back of the Meter for one second.
This places the Meter in calibration mode as shown on the display in Figure 6. The unit will remain in the calibration mode until the rotary switch is moved to the
OFF
position.
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Calibration Manual http://www
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UP button moves to the next step
Function indicator
Autoranging is disabled for calibration
Calibration step number Input signal required Calibration mode indicator aau01f.eps
Figure 6. Calibration Display
General Procedure
A sequence of signal inputs is required for each function that must be calibrated. The secondary display shows the required input next to the step number for that function.
The primary display shows the value being measured. The measurement is likely to be slightly different from the applied signal, because it may be showing an uncalibrated measurement. The general calibration procedure is as follows:
1.
Move the rotary switch to the function that you are calibrating.
2.
Apply the input signal indicated by the secondary display.
3.
Wait for the measurement on the primary display to settle out to its final value.
4.
Press the
UP
button to proceed to the next step. The Meter records a new constant.
5.
Repeat steps 2 through 4 until the secondary display shows
End
. This indicates that the calibration procedure for this function is complete. New constants will not be recorded until secondary display shows
End
.
6.
If there are more functions to be calibrated, move the rotary switch to the appropriate function, and continue from step one. Otherwise, turn the rotary switch to the
OFF
position to exit calibration.
Note
DC mV calibration affects the calibration of ALL functions and AC mV will affect all AC functions.
If the accuracy of the calibration source is more than approximately
15 % from the nominal value required for the cal point, then the factory default cal constants will automatically be used instead of source value.
In this case, the Meter may not pass the verification test and may require re-calibration.
22
True RMS Multimeter
Calibration
Special Requirements
DC mV calibration will affect the calibration of all other functions. Therefore, the DC
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mV function must be calibrated before calibrating any other function. Similarly, AC mV must be calibrated before any AC function, but after DC mV. The remaining functions
Temperature calibration need only be performed if one of the following components are replaced during the course of repair: U4 A/D chip, U10 EEPROM, or U100 Reference
Junction Sensor. Temperature is calibrated by making an external temperature measurement and entering the result into the instrument for calculation of the calibration constant. The calibration constant is then stored in calibration memory. This is done using the serial interface. See “Temperature Calibration” section.
When you replace the U10 EEPROM, you must also re-enter the serial number and model number for the Meter. See “Reprogramming Meter Serial Number and Model
Number” section.
Calibration Inputs
Table 5 lists the input values required for each calibration step.
Note
The column indicating time to settle does not include calibrator settling time.
Table 5. Calibration Inputs
Step Value Frequency Time to Settle (In Seconds)
DC mV
Temperature
5
1
AC mV
3
4
1
2
1
2
3
0 mV
50 mV
300 mV
500 mV
3000 mV
0
700 mV
400 mV
100 mV
DC
DC
DC
DC
DC
700 Hz
700 Hz
700 Hz
16
16
7
7
1
1
7
7
7
4 50 mV 700 Hz 7
5 3000 mV 700 Hz 7
1. Use 5520A 2-Wire Comp.
2. Zero ohms must use the same calibrator and test leads as all other ohm cal points.
Do not bypass the calibrator with a shorting bar for the zero ohms step.
3. Because of capacitive coupling, readings will be affected by movement of the leads or operator. Put fingers on UP button and wait for display reading to settle before pushing.
23
187/189
Calibration Manual
Table 5. Calibration Inputs (cont.)
Step
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AC V http://www
1
2
3
4
DC V
3
4
1
2
Ohms
1
1
2
2
3
Ohms
4
5
6
7
AC uA
1
2
5 V
50 V
500 V
500 V
5V
Value
50 V
500 V
500 V
0 Ohms
500 Ohms
5k Ohms
50k Ohms
500k Ohms
5M Ohms
30M ohms
Frequency
700 Hz
700 Hz
700 Hz
700 Hz
DC
DC
DC
DC
Time to Settle (In Seconds)
7
7
7
7
7
7
7
7
16
16
7
7
7
7
3
1
3
500 uA
5000 uA
700 Hz
700 Hz
7
7
DC uA
1
2
500 uA
5000 uA
DC
DC
16
7
AC mA
1
2
50 mA
400 mA
700 Hz
700 Hz
7
7
DC mA
1 50 mA DC 16
2 400 mA DC 7
1. Use 5520A 2-Wire Comp.
2. Zero volts and ohms must use the same calibrator and test leads as all other volt and ohm cal
points.
Do not bypass the calibrator with a shorting bar for the zero volts or ohms step.
3. Because of capacitive coupling, readings will be affected by movement of the leads or operator. Put fingers on UP button and wait for display reading to settle before pushing.
24
True RMS Multimeter
Calibration
Table 5. Calibration Inputs (cont.)
Step
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AC A http://www
1
2
DC A
5 A
5 A
Value Frequency
700 Hz
700 Hz
Time to Settle (In Seconds)
7
7
1 5 A DC 16
2 5 A DC 7
1. Use 5520A 2-Wire Comp.
2. Zero volts and ohms must use the same calibrator and test leads as all other volt and ohm cal
points.
Do not bypass the calibrator with a shorting bar for the zero volt or ohm step.
3. Because of capacitive coupling, readings will be affected by movement of the leads or operator. Put fingers on UP button and wait for display reading to settle before pushing.
Remote Interface
You can perform semi-automated calibration with the remote interface using MET/CAL software.
Temperature Calibration
Required equipment:
•
Fluke 87/89-IV, 187/189 Service Software, Fluke P/N 676152
•
Infrared Serial Cable Kit, Fluke P/N 1590638
•
IBM compatible PC
•
Fluke 80T-150U with accuracy certified to +0.2
°
C
•
Fluke 8060A Digital Multimeter
Note
The following procedure is only required if the Meter has been repaired by replacing one of the following components: A/D, U4, Reference Junction
Sensor, U100 or EEPROM, U10.
Setup
Prior to beginning the procedure, turn the rotary switch
OFF
. Let the Meter stabilize in a constant ambient temperature for 30 minutes. This allows the internal reference junction sensor and input terminals to stabilize to the same temperature.
Connect the IR Serial Cable to the serial com port of the PC. Install the 87/89-IV,
187/189 Service Software.
25
187/189
Calibration Manual
Procedure
While the rotary switch is in the
OFF
position, insert the certified 80T-150 probe into the
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Meter’s
COM
terminal (same temperature as reference junction). Make sure the probe tip makes firm contact with the bottom of the terminal. Measure and record the
COM
terminal temperature in units of 1/100
°
C. Do not convert this number to Fahrenheit, even if the Meter is using the Fahrenheit scale for its display output.
Turn the rotary switch to the temperature position. It does not matter whether the Meter is in calibration mode. On the Service Software menu screen, click
°
C Ref. Junction
.
Enter the measured temperature value in the text box and click
OK
. This sends the recorded reference junction temperature to the Meter through the IR Serial Cable.
Although the temperature calibration is not yet complete, it is safe at this point to turn the Meter off if the need arises. Doing so will not invalidate the previous steps.
To complete the temperature calibration, the DC mV function must be calibrated.
After DC mV calibration is complete:
1.
Turn the rotary switch to the temperature position. Put the Meter in calibration mode by pressing the recessed button on the back of the Meter.
The secondary display, which normally shows the required input, displays zero. In this case, no input is required.
2.
Press the
UP
button.
This sends the calculated temperature constants to EEPROM, and completes the temperature calibration.
3.
Continue calibrating the other functions, or turn the rotary switch to the
OFF
position to exit calibration.
Re-Programming Serial Number or Model Number
When the U10 EEPROM is replaced, you must also reenter the serial number and model number for the Meter. Do this as follows:
1.
Connect the IR Serial Cable to the serial com port of the PC. Install 87/89-IV,
187/189 Service Software (Fluke P/N 676152).
2.
Turn the Meter rotary switch to any function.
3.
On the Service Software menu screen, click
EEPROM
. Enter the serial number from the back of the Meter in the text box and click
OK
. To enter the model number, click
Yes
or
No
in the model menu box.
26
True RMS Multimeter
Parts and Accessories
Parts and Accessories
Replacement parts and accessories are listed in Table 6 and identified in Figure 7 by the reference designator.
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Table 6. Replacement Parts and Accessories
Description
Reference
Designators Part Number Qty
Access Door, Battery / Fuse
Tilt-Stand
Accessory Mount
W
Fuse, 0.44 A (44/100 A, 440 mA),
1000 V, FAST
W
Fuse, 11 A,1000 V FAST
Battery, 1.5 V, 0-15 mA, AA Alkaline
Fasteners, Battery / Fuse Access Door
MP14
MP8
MP9
F1
F2
H8, H9, H10, H11
H12, H13
1589387
659026
658424
943121
803293
376756
948609
1
1
1
1
1
4
2
Screws, Phillip-Head
AC70A Alligator Clip (Black)
AC70A Alligator Clip (Red)
H4, H5, H6, H7
MP38
MP39
832246
738047
738120
4
1
1
TL71 Right-Angle Test Lead Set
LCD 4.5 Digit Multiplexed
Connector, Elastomeric, LCD to PWB
1
MP34
DS1
802980
688181
1
1
Getting Started Manual
MP30, MP31
(TM1-TM5)
690883
See Note Below
2
2
5
CD-ROM (Contains Users Manual) (TM6) 1576992 1
W
To ensure safety, use exact replacement only.
1. Order replacement connectors separately when ordering a replacement LCD.
2. Getting Started Manual PNs: English=1547486; French, German, Italian, Dutch=1555282; Danish, Finnish,
Norwegian, Swedish=1555307; French, Spanish, Portuguese=1555294; Simplified Chinese, Traditional Chinese,
Korean, Japanese,Thai=1555318
27
187/189
Calibration Manual http://www
.elso
.sk
MP31
DS1
MP30
MP38
MP39
28
MP34
F2
F1
MP9
H4
H5
H7
H6
H8,9,10,11
MP14
H12
H13
MP8
Figure 7. Replacement Parts and Accessories
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Key Features
- Dual Digital Displays
- AC+DC true rms
- Fast Autorange
- AutoHOLD
- MIN MAX Mode
- FAST MN MX
- Closed-Case Calibration
- Battery / Fuse Access Door
- Hi-Impact Overmolded Case