Fluke 175 Manuel d'utilisation et d'entretien

PN 1600476 March 2001 Rev.4, 8/06

175, 177, & 179

True RMS Multimeters

Calibration Information

Introduction

XWWarning

To avoid electric shock or injury, do not perform the performance tests or

calibration adjustment procedures unless qualified to do so.

The information provided in this document is for the use of qualified personnel

only.

The 175, 177, & 179 Calibration Information provides the information necessary to adjust and verify the

performance of the Fluke Models 175, 177, and 179 True RMS Multimeters (hereafter known as the

Meter).

The following information is included in this document:

•Safety Information and International Electrical Symbols (page 2)

•Test Lead Alert (page 3)

•Specifications (pages 4-6)

•Testing and Replacing the Fuses (pages 7-8)

•Replacing the Battery (page 8)

•Cleaning (page 9)

•Replacing the LCD (page 9-10)

•Performance Tests (pages 10-15)

•Calibration Adjustment (pages 15-18)

•User-Replaceable Parts and Accessories (pages 19-20)

•Complete Warranty (page 21)

See the 175, 177, & 179 Users Manual for complete operating instructions.

Service Information

To contact Fluke, call one of the following telephone numbers:

USA: 1-888-99-FLUKE (1-888-993-5853)

Canada: 1-800-36-FLUKE (1-800-363-5853)

Europe: +31 402-675-200

Japan: +81-3-3434-0181

Singapore: +65-738-5655

Anywhere in the world: +1-425-446-5500

Or, visit Fluke's Web site at www.fluke.com.

To register your product, visit register.fluke.com

175, 177, & 179

Calibration Information

Safety Information

"Warning" and "Caution" Statements

A “XW Warning" identifies hazardous conditions and actions that could cause bodily harm or death.

A "WCaution" identifies conditions and actions that could damage the Meter, the equipment under test,

or cause permanent loss of data.

XWWarnings and Precautions

To avoid possible electric shock or personal injury, and to avoid possible damage to the Meter

or to the equipment under test, adhere to the following practices:

•Use this meter only as specified in this manual or the protection provided by the Meter

might be impaired.

•Before using the Meter, inspect the case. Do not use the Meter if it is damaged. Look for

cracks or missing plastic. Pay particular attention to the insulation around the connectors.

•Inspect the test leads for damaged insulation or exposed metal. Check the test leads for

continuity. Replace damaged test leads before using the Meter.

•Verify the Meter’s operation by measuring a known voltage. Do not use the Meter if it

operates abnormally. Protection may be impaired. When in doubt, have the Meter serviced.

•Do not apply more than the rated voltage, as marked on the Meter, between the terminals or

between any terminal and earth ground.

•Use caution when working with voltages above 30 V ac rms, 42 V ac peak, or 60 V dc. These

voltages pose a shock hazard.

•Use the proper terminals, function, and range for your measurements.

•Do not operate the Meter around explosive gas, vapor, or dust.

•When using the probes, keep fingers behind the finger guards.

•When making connections, connect the common test lead before connecting the live test

lead; when disconnecting, disconnect the live test lead before disconnecting the common

test lead.

•Disconnect circuit power and discharge all high-voltage capacitors before testing

resistance, continuity, diodes, or capacitance.

•Before measuring current, check the Meter's fuses (see "Testing the Fuses") and turn OFF

power to the circuit before connecting the Meter to the circuit.

•Do not operate the Meter with the case (or part of the case) removed.

•Use only a single 9 V battery, properly installed in the Meter case, to power the Meter.

•Replace the battery as soon as the low battery indicator (b) appears. With a low battery, the

Meter might produce false readings that can lead to electric shock and personal injury.

•Remove test leads from the Meter before opening the Meter case.

•When servicing the Meter, use only specified replacement parts.

•When replacing the fuses, use ONLY replacement fuses with the amperage, interrupt,

voltage, and speed ratings specified in Table 5.

True RMS Multimeters

International Electrical Symbols

The following international symbols appear in this document and on the Meter.

BAC (Alternating Current) JEarth ground

FDC (Direct Current) IFuse

BAC or DC PConforms to European Union directives

WRisk of danger. Important Information.

Refer to the manual. $Conforms to relevant Canadian Standards

Association directives

XHazardous Voltage TDouble insulated

sTechnischer Überwachungs Verein.

German certifying body. ! Underwriters Laboratories, Inc.

Meter in accordance with IEC 61010-1. 54CJ

bBattery. Low Battery when shown on

display.

;

N10140 Conforms to relevant Australian standards

#Verband Deutscher Electroniker. German electronics association.

Test Lead Alert

XWWarning

Personal injury or damage to the Meter can occur if the user attempts to make a

measurement with a lead in an incorrect terminal.

As a reminder to check that the test leads are in the correct terminals, LEAd is displayed when the Rotary

Switch is moved to or from the mA or Aposition.

175, 177, & 179

Calibration Information

Specifications

Accuracy is specified for 1 year after calibration, at operating temperatures of 18 °C to 28 °C, with relative humidity

at 0 % to 95 %. Accuracy specifications take the form of: ±( [ % of Reading ] + [ Counts ] ). AC conversions are

ac-coupled, true rms responding.

Maximum voltage between

any terminal and earth ground:

1000 V dc or ac rms

Surge Protection: 8 kV peak per IEC 61010

WFuse for mA inputs:

WFuse for A input:

440 mA, 1000 V FAST Fuse, minimum interrupt rating 10 kA

11 A, 1000 V FAST Fuse, minimum interrupt rating 17 kA

Display: Digital: 6000 counts, updates 4/sec

Bar Graph: 33 segments;

Updates 40/sec

Frequency: 10,000 counts

Capacitance: 1,000 counts

Altitude: Operating: 2000 m; Storage: 12,000 m

Temperature: Operating: −10 °C to +50 °C;

Storage: −40 °C to +60 °C

Temperature coefficient: 0.1 X (specified accuracy) / °C

(< 18 °C or > 28 °C)

Electromagnetic Compatibility

(EN 61326-1:1997):

In an RF field of 3 V/M, accuracy = specified accuracy except in temperature:

specified accuracy ±5 °C (9 °F)

Relative Humidity:

Maximum, Noncondensing

90 % to 35 °C

75 % to 40 °C

45 % to 50 °C

Battery Life: Alkaline: 300 hrs typical

Size (H x W x L): 4.3 cm x 9 cm x 18.5 cm

Weight: 420 g

Safety Compliances: ANSI/ISA S82.02.01, CSA C22.2-1010.1, IEC 61010 to 1000 V Measurement

Category III, 600 V Measurement Category IV

CAT III- Equipment designed to protect against transients in equipment in fixed-

equipment installations, such as distribution panels, feeders and short branch circuits,

and lighting systems in large buildings.

CAT IV- Equipment designed to protect user against transients from the primary

supply level, such as an electricity meter or an overhead or underground utility

service.

Certifications: CSA, TÜV (EN61010), P, ;(N10140), VDE, UL

True RMS Multimeters

Specifications

Accuracy ± ( [ % of Reading ] + [ Counts ] )

Function Range

1Resolution Model 175 Model 177 Model 179

AC Volts 2,3

600.0 mV

6.000 V

60.00 V

600.0 V

1000 V

0.1 mV

0.001 V

0.01 V

0.1 V

1 V

1.0 % + 3

(45 Hz to 500 Hz)

2.0 % + 3

(500 Hz to 1 kHz)

1.0 % + 3

(45 Hz to 500 Hz)

2.0 % + 3

(500 Hz to 1 kHz)

1.0 % + 3

(45 Hz to 500 Hz)

2.0 % + 3

(500 Hz to 1 kHz)

DC mV 600.0 mV 0.1 mV 0.15 % + 2 0.09 % + 2 0.09 % + 2

DC Volts 6.000 V

60.00 V

600.0 V

0.001 V

0.01 V

0.1 V

0.15 % + 2

0.09 % + 2

1000 V 1 V 0.15 % + 2 0.15 % + 2 0.15 % + 2

Continuity 600 Ω1 ΩMeter beeps at < 25 Ω, beeper turns off at > 250 Ω; detects opens or shorts

of 250 μs or longer.

Ohms

600.0 Ω

6.000 kΩ

60.00 kΩ

600.0 kΩ

6.000 MΩ

50.00 MΩ

0.1 Ω

0.001 kΩ

0.01 kΩ

0.1 kΩ

0.001 MΩ

0.01 MΩ

0.9 % + 2

0.9 % + 1

1.5 % + 3

0.9 % + 2

0.9 % + 1

1.5 % + 3

0.9 % + 2

0.9 % + 1

1.5 % + 3

Diode test 2.400 V 0.001 V 1 % + 2

Capacitance

1000 nF

10.00 μF

100.0 μF

9999 μF 4

1 nF

0.01 μF

0.1 μF

1 μF

1.2 % + 2

10 % typical

1.2 % + 2

10 % typical

1.2 % + 2

10 % typical

AC Amps 5

(True RMS)

(45 Hz to 1 kHz)

60.00 mA

400.0 mA

6.000 A

10.00 A

0.01 mA

0.1 mA

0.001 A

0.01 A

1.5 % + 3

1. All AC voltage and AC current ranges are specified from 5 % of range to 100 % of range.

2. Crest factor of ≤3 at full scale up to 500 V, decreasing linearly to crest factor ≤1.5 at 1000 V.

3. For non-sinusoidal waveforms, add -(2% reading + 2% full scale) typical, for crest factors up to 3.

4. In the 9999 μF range for measurements to 1000 μF, the measurement accuracy is 1.2 % + 2 for all models.

5. Amps input burden voltage (typical): 400 mA input 2 mV/mA, 10 A input 37 mV/A.

175, 177, & 179

Calibration Information

Accuracy ± ( [ % of Reading ] + [ Counts ] )

Function Range

1Resolution Model 175 Model 177 Model 179

DC Amps6

60.00 mA

400.0 mA

6.000 A

10.00 A

0.01 mA

0.1 mA

0.001 A

0.01 A

1.0 % + 3 1.0 % + 3 1.0 % + 3

(AC- or DC-

coupled,

V or A 2, 3, 4,5

input )

99.99 Hz

999.9 Hz

9.999 kHz

99.99 kHz

0.01 Hz

0.1 Hz

0.001 kHz

0.01 kHz

0.1 % + 1

Temperature -40 °C to +400 °C

-40 °F to +752 °F

0.1 °C

0.1 °F NA NA 1 % + 107

1 % + 187

MIN MAX

AVG

For DC functions, accuracy is the specified accuracy of the measurement function ±12 counts for changes longer than

275 ms in duration.

For AC functions, accuracy is the specified accuracy of the measurement function ±40 counts for changes longer than

1.2 s in duration.

1. All AC voltage and AC current ranges are specified from 5 % of range to 100 % of range.

2. Frequency is specified from 2 Hz to 99.99 kHz in Volts and from 2 Hz to 30 kHz in Amps.

3. For serial number 83911000 and below, frequencies < 10 kHz are not specified in 600 mV ac, 60 mA ac, and 6 A ac ranges. For Serial

numbers between 83911001 – 83911240 and 84060001 and above, this note does not apply.

4. Below 2 Hz, the display shows zero Hz.

5. Noise at frequencies below 4.5 Hz and amplitude below 600 mV may exceed the frequency specification.

6. Amps input burden voltage (typical): 400 mA input 2 mV/A, 10 A input 37 mV/A.

7. Does not include error of the thermocouple probe.

Function

Overload

Protection 1

Input

Impedance

(Nominal)

Common Mode Rejection

Ratio

(1 kΩUnbalanced)

Normal Mode

Rejection

Volts AC 1000 V rms > 10 MΩ< 100 pF > 60 dB @ dc, 50 Hz or 60 Hz

Volts DC 1000 V rms > 10 MΩ<100 pF >120 dB @ dc, 50 Hz or 60 Hz > 60 dB @ 50 Hz or 60 Hz

mV/T 1000 V rms 2> 10 MΩ< 100 pF >120 dB @ dc, 50 Hz or 60 Hz > 60 dB @ 50 Hz or 60 Hz

Open Circuit

Test Voltage

Full Scale Voltage To:

600 kΩ50 MΩ

Short Circuit

Current

Ohms/Continuity 1000 V rms 2< 8.0 V dc < 660 mV dc < 4.6 V dc < 1.1 mA

Continuity/Diode

test 1000 V rms 2< 8.0 V dc 2.4 V dc < 1.1 mA

1. 10 7 V-Hz maximum.

2. For circuits < 0.3 A short circuit. 660 V for high energy circuits.

Function Overload Protection Overload

mA Fused, 440 mA, 1000 V FAST Fuse 600 mA overload for 2 minutes maximum

A Fused, 11 A, 1000 V FAST Fuse 20 A overload for 30 seconds maximum

True RMS Multimeters

Testing the Fuses

XWWarning

To avoid electrical shock or personal injury:

•Remove the test leads and any input signals before replacing the battery or

fuses.

•To avoid electrical shock, arc blast, or damage to the Meter, install only

fuses with the amperage, interrupt, voltage, and speed ratings specified in

Table 5.

To test the fuses (refer to Figure 1):

1. Set the Rotary Switch to e.

2. Plug a test lead into the VeG terminal and touch the probe to the 400 mA (to test the 440 mA Fuse)

or 10 A terminal (to test the 11 A Fuse).

•If the display shows a resistance value in the range shown in Figure 1, the fuse is good.

•If the display reads OL, replace the fuse and test again.

•If the display shows any other value, have the Meter serviced. See “Service Information” earlier in

this manual.

11 A440 mA

<.5

<12 OKOK

RANGEHOLD MINMAX

aik12f.eps

Figure 1. Testing the Current Fuses

175, 177, & 179

Calibration Information

Replacing the Fuses

XWWarning

To avoid electrical shock, arc blast, or damage to the Meter, install only fuses

with the amperage, interrupt, voltage, and speed ratings specified in

Table 5.

To replace the Fuses (refer to Figure 2):

1. Turn the Rotary Switch to OFF.

2. Disconnect the test leads and/or any connectors from the terminals.

3. Remove the four screws from the Case Bottom and separate the Case Top from the Case Bottom.

4. Remove the fuses by gently prying one end loose, then slide the fuse out of its bracket, and replace

with a properly rated good fuse.

5. Rejoin the Case Bottom and Case Top, and reinstall the four screws.

Replacing the Battery

XWWarning

To avoid false readings, which could lead to possible electric shock or personal

injury, replace the Battery as soon as the low battery indicator ( b) appears.

To replace the Battery (refer to Figure 2):

1. Turn the Rotary Switch to OFF and remove the test leads from the terminals.

2. Remove the two screws from the Battery Compartment Door, and remove it from the Case Bottom.

3. Remove the Battery from the battery connector.

4. Replace the Battery with a new 9 V battery (NEDA A1604, 6F22, or 006P).

5. Reattach the Battery Compartment Door to the Case Bottom and reinstall the two screws.

aik13f.eps

Figure 2. Battery and Fuse Replacement

True RMS Multimeters

Cleaning

XWWarning

To avoid electrical shock:

•Remove test leads and any input signals before cleaning.

•Do not reinstall the pca until it is completely dry.

Dirt or moisture in the terminals can affect readings.

WCaution

To avoid damaging the Meter, do not use aromatic hydrocarbons or chlorinated

solvents for cleaning. These solutions will react with the plastics used in the

instruments.

Do not use detergents of any kind for cleaning the pca.

Clean the instrument case with a damp cloth and mild detergent.

The pca may be washed with isopropyl alcohol or hot deionized water and a soft brush. Remove excess

cleaning material with clean dry air at low pressure, then dry the pca at 50 °C.

Replacing the LCD

WCaution

To prevent contamination, do not handle the conductive edges of the LCD or

the LCD Elastomeric Connectors.

If the edges are contaminated, clean them with alcohol. Allow the alcohol to dry

before reassembling.

To remove and replace the LCD, perform the following procedure (refer to Figure 3):

1. Turn the Rotary Switch to OFF and remove the test leads from the Meter terminals.

2. Remove the four screws from the Case Bottom, and separate the Case Top from the Case Bottom

The circuit board remains attached to the Case Bottom.

3. Remove battery compartment door and disconnect the battery from the battery connector.

4. Remove the PCA Screw located under the 440 mA Fuse, and lift the pca out of the Case Bottom. The

beeper is loose in the bottom case. Exercise caution not to damage it.

5. Loosen the 4 screws on the back of the pca. This will facilitate reinstalling the LCD.

6. Insert a small, flat-head screwdriver under the LCD Mask edge and gently pry the LCD Mask from the

snaps.

WCaution

Take care to not break the LCD with the screwdriver.

7. Lift out the LCD.

8. Make sure that all connector contact points are clean. Refer to “Cleaning” for more information.

9. Install a new LCD, taking care that it is correctly oriented.

10. Reattach the LCD Mask to the LCD assembly by snapping the LCD Mask into place.

11. Tighten the 4 screws on the back of the pca.

12. Lay the pca back into the Case Bottom, and screw it down.

13. Reinsert the 440 mA Fuse.

14. Reinstall the Battery.

15. Rejoin the Case Bottom, Case Top, battery compartment door and reinstall the four case screws.

175, 177, & 179

Calibration Information

LCD Mask

aik15f.eps

Figure 3. Removing the LCD Mask

Performance Tests

XWWarning

To avoid electric shock, do not perform the performance test procedures unless

the Meter is fully assembled.

The following performance tests verify the complete operation of the Meter and check the accuracy of

each Meter function against its specifications. If the Meter fails any part of the test, calibration adjustment

and/or repair is indicated.

In the performance tests, the Meter is referred to as the unit under test (UUT).

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