Fluke 175, 177, 179 Calibartion procedure

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175, 177, 179

True-rms Multimeters

Calibration Information

Introduction

Warning

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 175, 177, and 179 True-rms Multimeters (hereafter known as the Product).

The following information is included in this document:

Safety Information and International Electrical Symbols

Test Lead Alert

Specifications

Testing and Replacing the Fuses

Replacing the Battery

Cleaning

Replacing the LCD

Performance Tests

Calibration Adjustment

User-Replaceable Parts and Accessories

Complete Warranty

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

How to Contact Fluke

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

Technical Support USA: 1-800-44-FLUKE (1-800-443-5853)

Calibration/Repair USA: 1-888-99-FLUKE (1-888-993-5853)

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

Europe: +31-402-675-200

Japan: +81-3-6714-3114

Russia: +8-495-664-75-12

Singapore: +65-6799-5566

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

Or, visit Fluke's website at www.fluke.com.

To register your product, visit http://register.fluke.com.

To view, print, or download the latest manual supplement, visit http://us.fluke.com/usen/support/manuals.

PN 1600476, March 2001, Rev. 6, 10/15

175, 177, 179

Calibration Information

Safety Information

In this manual, a Warning identifies conditions and procedures that are dangerous to the user. A Caution identifies conditions and procedures that can cause damage to the Product or the equipment under test.

Warning

To prevent possible electrical shock, fire, or personal injury:

Read all safety information before you use the Product.

Carefully read all instructions.

Use the Product only as specified, or the protection supplied by the Product can be compromised.

Examine the case before you use the Product. Look for cracks or missing plastic. Carefully look at the insulation around the terminals.

Do not use the Product around explosive gas, vapor, or in damp or wet environments.

Do not work alone.

Limit operation to the specified measurement category, voltage, or amperage ratings.

Comply with local and national safety codes. Use personal protective equipment (approved rubber gloves, face protection, and flame-resistant clothes) to prevent shock and arc blast injury where hazardous live conductors are exposed.

Use Product-approved measurement category (CAT), voltage, and amperage rated accessories (probes, test leads, and adapters) for all measurements.

Do not exceed the Measurement Category (CAT) rating of the lowest rated individual component of a Product, probe, or accessory.

Do not touch voltages >30 V ac rms, 42 V ac peak, or 60 V dc.

Keep fingers behind the finger guards on the probes.

Use only current probes, test leads, and adapters supplied with the Product.

Connect the common test lead before the live test lead and remove the live test lead before the common test lead.

Disable the Product if it is damaged.

Do not use the Product if it is damaged.

Do not use the Product if it operates incorrectly.

Only use probes, test leads, and accessories that have the same measurement category, voltage, and amperage ratings as the Product.

Remove the batteries if the Product is not used for an extended period of time, or if stored in temperatures above 50 C. If the batteries are not removed, battery leakage can damage the Product.

The battery door must be closed and locked before you operate the Product.

Use only cables with correct voltage ratings.

Remove all probes, test leads, and accessories before the battery door is opened.

True-rms Multimeters

Symbols

Replace the batteries when the low battery indicator shows to prevent incorrect measurements.

Do not apply more than the rated voltage, between the terminals or between each terminal and earth ground.

Measure a known voltage first to make sure that the Product operates correctly.

Use the correct terminals, function, and range for measurements.

Do not use test leads if they are damaged. Examine the test leads for damaged insulation, exposed metal, or if the wear indicator shows. Check test lead continuity.

Do not touch the probes to a voltage source when the test leads are connected to the current terminals.

Do not use test leads if they are damaged. Examine the test leads for damaged insulation and measure a known voltage.

Do not use in CAT III or CAT IV environments without the protective cap installed on test probe. The protective cap decreases the exposed probe metal to <4 mm. This decreases the possibility of arc flash from short circuits.

Symbols

Table 1 is a list of the symbols used on the Product and in this manual.

Table 1. Symbols

Symbol	Description	Symbol	Description

	Consult user documentation.		Earth

	WARNING. RISK OF DANGER.		Capacitance

	WARNING. HAZARDOUS VOLTAGE. Risk		Fuse
	of electric shock.
	Earth		Conforms to European Union directives.

	AC (Alternating Current)		Double Insulated
	DC (Direct Current)		Low battery. Replace battery.
	Both direct and alternating current		Minimum fuse interrupt rating.
	Continuity test or continuity beeper tone.		Certified by TÜV SÜD Product Service.

	Conforms to European Union directives.		Conforms to relevant Australian Safety and
			EMC standards.
	Certified by CSA Group to North American		Conforms to relevant South Korean EMC
	safety standards.		Standards.

	Measurement Category II is applicable to test and measuring circuits connected directly to utilization
	points (socket outlets and similar points) of the low-voltage MAINS installation.

	Measurement Category III is applicable to test and measuring circuits connected to the distribution part
	of the building’s low-voltage MAINS installation.

	Measurement Category IV is applicable to test and measuring circuits connected at the source of the
	building’s low-voltage MAINS installation.

	This product complies with the WEEE Directive marking requirements. The affixed label indicates that
	you must not discard this electrical/electronic product in domestic household waste. Product Category:
	With reference to the equipment types in the WEEE Directive Annex I, this product is classed as
	category 9 "Monitoring and Control Instrumentation" product. Do not dispose of this product as unsorted
	municipal waste.

175, 177, 179

Calibration Information

Test Lead Alert

To remind you to check that the test leads are in the correct terminals, momentarily shows on the display when you move the rotary switch to or from the mA or A position.

Warning

Attempting to make a measurement with a test lead in an incorrect terminal might blow a fuse, damage the Product, and cause serious personal injury.

Specifications

Accuracy is specified for 1 yr after calibration, at operating temperatures of 18 C to 28 C, with relative humidity at 0 % to 90 %. Accuracy specifications take the form of: ([% of Reading] + [Counts])

Maximum voltage between any
terminal and earth ground ...............................	1000 V
Fuse Protection for mA inputs ...................	0.44 A, 1000 V, IR 10 kA
Fuse Protection for A input ........................	11 A, 1000 V, IR 17 kA
Display ...............................................................	Digital: 6000 counts, updates 4/sec
Bar Graph .......................................................	33 segments, Updates 40x/sec
Frequency.......................................................	10 000 counts
Capacitance....................................................	1000 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)
Relative Humidity..............................................	Maximum Non-condensing:
	90 % to 35 C,
	75 % to 40 C,
	45 % to 50 C
Battery Life ........................................................	Alkaline: 400 hrs typical
Size (H x W x L) .................................................	4.3 cm x 9 cm x 18.5 cm
Weight ................................................................	420 g
Safety
General ...........................................................	IEC 61010-1: Pollution Degree 2
Measurement ..................................................	IEC 61010-2-033: CAT IV 600 V, CAT III 1000 V
Electromagnetic Compatibility (EMC)
International ....................................................	IEC 61326-1: Portable Electromagnetic Environment CISPR 11: Group 1, Class A,
	IEC 61326-2-2

Group 1: Equipment has intentionally generated and/or uses conductively-coupled radio frequency energy that is necessary for the internal function of the equipment itself.

Class A: Equipment is suitable for use in all establishments other than domestic and those directly connected to a low-voltage power supply network that supplies buildings used for domestic purposes. There may be potential difficulties in ensuring electromagnetic compatibility in other environments due to conducted and radiated disturbances.

Emissions that exceed the levels required by CISPR 11 can occur when the equipment is connected to a test object. The equipment may not meet the immunity requirements of this standard when test leads and/or test probes are connected.

Korea (KCC) ...................................................

Class A Equipment (Industrial Broadcasting & Communication Equipment)

Class A: Equipment meets requirements for industrial electromagnetic wave equipment and the seller or user should take notice of it. This equipment is intended for use in business environments and not to be used in homes.

USA (FCC)......................................................	47 CFR 15 subpart B. This product is considered an exempt device per clause
	15.103.

True-rms Multimeters

Electrical Specifications

Function

Range [1]

Resolution

Accuracy ( [ % of Reading ] Counts ] )

175

177

179

600.0 mV

0.1 mV

1.0 % + 3

6.000 V

0.001 V

(45 Hz to 500 Hz)

AC Volts [2] [3]

60.00 V

0.01 V

600.0 V

0.1 V

1000 V

1 V

2.0 % + 3

(500 Hz to 1 kHz)

DC mV

600.0 mV

0.1 mV

0.15 % + 2

0.09 % + 2

6.000 V

0.001 V

DC Volts

60.00 V

0.01 V

0.15 % + 2

0.09 % + 2

600.0 V

0.1 V

1000 V

1 V

0.15 % + 2

Continuity

600

Product beeps at <25 , beeper turns off at >250 ; detects

opens or shorts of 250

s or longer.

600.0

0.1

0.9 % + 2

6.000 k

0.001 k

0.9 % + 1

Ohms

60.00 k

0.01 k

0.9 % + 1

600.0 k

0.1 k

0.9 % + 1

6.000 M

0.001 M

0.9 % + 1

50.00 M

0.01 M

1.5 % + 3

Diode test

2.400 V

0.001 V

1 % + 2

1000 nF

1 nF

1.2 % + 2

Capacitance

10.00 F

0.01 F

1.2 % + 2

100.0 F

0.1 F

1.2 % + 2

9999 F [4]

1 F

10 % typical

AC Amps [5]

60.00 mA[6]

0.01 mA

(True -rms)

400.0 mA

0.1 mA

1.5 % + 3

6.000 A

0.001 A

(45 Hz to 1 kHz)

10.00 A [7]

0.01 A

60.00 mA

0.01 mA

DC Amps [5]

400.0 mA [6]

0.1 mA

1.0 % + 3

6.000 A

0.001 A

10.00 A [7]

0.01 A

99.99 Hz

0.01 Hz

999.9 Hz

0.1 Hz

(ACor DCcoupled,

0.1 % + 1

9.999 kHz

0.001 kHz

V or A

[8] [9]

input )

99.99 kHz

0.01 kHz

Temperature

[10]

-40 C to +400 C

0.1 C

1 % + 10 [11]

-40 F to +752 F

0.1 F

1 % + 18 [10]

For dc functions, accuracy is the specified accuracy of the measurement function 12 counts for changes

MIN MAX AVG

longer than 350 ms in duration.

For ac functions, accuracy is the specified accuracy of the measurement function 40 counts for changes

longer than 900 ms in duration.

[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 F range for measurements to 1000 F, 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.

[6] 400.0 mA accuracy specified up to 600 mA overload.

[7] >10 A unspecified.

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

[9] Below 2 Hz, the display shows zero Hz.

[10] In RF field of 3 V/m specified accuracy 5 C (9 F).

[11] Does not include error of the thermocouple probe.

175, 177, 179

Calibration Information

Function

Overload

Input Impedance

Common Mode Rejection Ratio

Normal Mode Rejection

Protection [1]

(Nominal)

(1 k Unbalanced)

Volts ac

1000 V rms

>10 M < 100 pF

> 60 dB @ dc, 50 Hz or 60 Hz

Volts dc

1000 V rms

>10 M < 100 pF

>120 dB @ dc, 50 Hz or 60 Hz

> 60 dB @ 50 Hz or 60 Hz

mV/

1000 V rms [2]

>10 M < 100 pF

>120 dB @ dc, 50 Hz or 60 Hz

> 60 dB @ 50 Hz or 60 Hz

Open Circuit Test

Full Scale Voltage To:

Short Circuit Current

Voltage

600 k

50 M

Ohms/Capacitance

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] 107 V-Hz maximum.

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

Function

Overload Protection

Overload

Fused, 44/100 A, 1000 V FAST Fuse

600 mA overload for 2 minutes maximum, 10 minutes rest minimum

Fused, 11 A, 1000 V FAST Fuse

20 A overload for 30 seconds maximum, 10 minutes rest minimum

Frequency Counter Sensitivity

Input Range [1] [2]

Typical Sensitivity (RMS Sine Wave)

2 Hz to 45 Hz

45 Hz to 10 kHz

10 kHz to 20 kHz

20 kHz to 50 kHz

50 kHz to 100 kHz

600 mV

Unspecified [3]

80 mV

150 mV

400 mV

Unspecified [3]

6 V

0.5 V

0.6 V

1.0 V

2.8 V

Unspecified [3]

Volts ac

60 V

5 V

3.8 V

4.1 V

5.6 V

9.6 V

600 V

50 V

36 V

39 V

45 V

58 V

1000 V

500 V

300 V

320 V

380 V

6 V

0.5 V

0.75 V

1.4 V

4.0 V

Unspecified [3]

Volts dc

60 V

4 V

3.8 V

4.3 V

6.6 V

13 V

600 V

40 V

36 V

39 V

45 V

58 V

1000 V

500 V

300 V

320 V

380 V

AC/DC Amps

5 mA

4 mA

4 mA [4]

0.5 A

0.4 A

0.4 A [4]

[1] Maximum input for specified accuracy = 10X Range or 1000 V.

[2] Noise at low frequency and amplitude may exceed the frequency accuracy specification. [3] Unspecified but usable depending on quality and amplitude of signal.

[4] In mA and A ranges, frequency measurement is specified to 30 kHz.

Test the Fuses

To test the fuses (see Figure 1):

1.Set the Rotary Switch to .

2.Plug a test lead into the V 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 , replace the fuse and test again.

If the display shows any other value, have the Product serviced. See How to Contact Fluke earlier in this manual.

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