Fluke 110 Manuale per l'uso e la cura

PN 1608592 March 2001

Models 110,111 &112

Multimeters

Calibration Information

Introduction

The Fluke Model 110, Model 111, and Model 112 True RMS multimeters (hereafter "the Meter") are

battery-powered, with a 6000-count display and a bar graph.

This calibration information applies to all three models. All figures show the Model 112.

The Meter measures or tests the following:

•AC and DC voltage

•Resistance

•Continuity

•Diodes

•Frequency

•Capacitance

•AC and DC current (Model 111 and Model 112)

"Warning" and "Caution" Statements

A "WWarning" statement identifies hazardous conditions and actions that could cause bodily harm or

death.

A "Caution" statement identifies conditions and actions that could damage the Meter or the equipment

under test.

Unsafe Voltage Symbol

To alert you to the presence of a potentially hazardous voltage, the Ysymbol is displayed when the Meter

detects a voltage ≥30 V or a voltage overload (OL) condition.

Test Lead Alert

WWarning

Personal injury or damage to the Meter can occur if you attempt to make a

measurement with a lead in an incorrect terminal.

To remind you to check that the test leads are in the correct terminals, LEAd is displayed briefly when you

move the rotary switch to or from any A position.

These Meters meet CAT III IEC 61010-1-95 standards. The IEC 61010-1-95 safety standard defines four

overvoltage categories (CAT I to IV) based on the magnitude of danger from transient impulses. CAT III

meters are designed to protect against transients in fixed-equipment installations at the distribution level.

Models 110, 111 & 112

Calibration Information

WWarning

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

calibration procedures unless you are qualified to do so.

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

only.

This document provides the information necessary to calibrate and verify the performance of the Fluke

Model 110, 111, and 112 multimeters.

The following information is included:

•Safety Information and international symbols (Page 3)

•Specifications (Pages 4 - 5)

•Testing the fuse (Page 6)

•Replacing the battery and fuse (Pages 7 - 8)

•Replacing the LCD (Pages 9 - 10)

•Performance tests (Pages 10 - 12)

•Calibrating the Meter (Pages 13 - 14)

•Display messages (Page 14)

•Cleaning the Meter (Page 15)

•User-replaceable parts (Page 16)

See the Models 110, 111 & 112 Users Manual for operating instructions.

Warranty and Service Information

The Meter has a three year limited warranty, which is printed in the Users Manual.

To contact Fluke, call:

1-888-99-FLUKE (1-888-993-5853) in USA and Canada

+31 402-678-200 in Europe

+81-3-3434-0181 Japan

+65-276-6196 Singapore

+1-425-446-5500 in other countries

For additional information about Fluke, its products, and services, visit Fluke’s web site at:

www.fluke.com

Safety Information

WWarnings and Precautions

To avoid possible electric shock or personal injury, follow these guidelines:

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

be impaired.

•Do not use the Meter or test leads if they appear damaged, or if the Meter is not operating

properly.

•Always use proper terminals, switch position, and range for measurements.

•Verify the Meter’s operation by measuring a known voltage. If in doubt, have the Meter

serviced.

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

between any terminal and earth ground.

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

shock hazard.

•To avoid false readings that can lead to electric shock and injury, replace the battery as soon

as the low battery indicator (N) appears.

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

continuity, diodes, or capacitance.

•Do not use the Meter around explosive gas or vapor.

•When using test leads or probes, keep your fingers behind the finger guards.

•Remove test leads from the Meter before opening the battery door or the Meter case.

International Symbols

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

AC (Alternating Current) Earth ground

DC (Direct Current) Conforms to European Union directives

AC or DC Canadian Standards Association

Fuse Double insulated

Important Information. Refer to the

manual. LISTED

950 Z

Underwriters Laboratories, Inc.

Battery (Low battery when shown on the

display) N10140

Conforms to relevant Australian standards

Inspected and licensed by TÜV Product Services

Models 110, 111 & 112

Calibration Information

Specifications

Accuracy is specified for 1 year after calibration, at operating temperatures of 18 °C to 28 °C (64 °F to 82 °F), with

relative humidity at 0 % to 95 %.

The accuracy specifications take the form of: ±( [ % of Reading ] + [ Counts ] )

Maximum voltage between any

terminal and earth ground: 600 V

Surge Protection: 6 kV peak per IEC 61010-1-95

WFuse for A input: 11 A, 1000 V FAST Fuse

Display: Digital:

Bar Graph:

Frequency:

Capacitance:

6,000 counts, updates 4/sec

33 segments, updates 40/sec

9,999 counts

Temperature: Operating:

Storage: −10 °C to +50 °C

−30 °C to +60 °C

Temperature Coefficient: 0.1 x (specified accuracy)/ °C for <18 °C or > 28 °C

Electromagnetic Compatibility: Performance ≥3 V/m is not specified.

Relative Humidity: Noncondensing < 10 °C

0 % to 95 % @ 10 °C to 30 °C

0 % to 75 % @ 30 °C to 40 °C

0 % to 45 % @ 40 °C to 50 °C

Battery Life: Alkaline: 300 hours typical, without backlight

Size, with Holster (H x W x L): 4.6 cm x 9.6 cm x 16.0 cm

Weight: 350 g

Safety Compliance: ANSI/ISA-S82.01-1994, CSA C22.2 No 1010.1-92 and IEC 61010-1-95

Overvoltage Category III (CAT III), 600 V

Certifications: UL (3111), P, CSA, TÜV, ;(N10140)

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

Function Range Resolution Model 110 Model 111 Model 112

AC Volts1,2 - True RMS

(50 Hz to 500 Hz) 6000 mV3

6.000 V

60.00 V

600.0 V

1 mV

0.001 V

0.01 V

0.1 V 1.0 % + 3 1.0 % + 3 1.0 % + 3

DC Volts 6000 mV3

6.000 V

60.00 V

600.0 V

1 mV

0.001 V

0.01 V

0.1 V

0.7 % + 2 0.7 % + 2 0.7 % + 2

Continuity 600 Ω1 ΩBeeper guaranteed on < 20 Ω, guaranteed off > 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

40.00 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

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

2. Crest factor of ≤3 at full scale up to 300 V, decreasing linearly to crest factor ≤1.5 at 600 V.

3. The 6000 mV range can only be entered in Manual Range mode. Use the 6000 mVDC range with accessories.

Specifications

Specifications (continued)

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

Function Range Resolution Model 110 Model 111 Model 112

Diode test 2.200 V 0.001 V 0.9 % + 2

1.9 % + 2

Capacitance41000 nF

10.00 µF

100.0 µF

10000 µF

1 nF

0.01 µF

0.1 µF

1 µF100 µF - 1000 µF: 1.9% + 2

> 1000 µF: 10% + 90 typical

AC Amps5- True RMS

(50 Hz to 500 Hz)

(Models 111 and 112)

10.00 A

continuous or

20 A overload

for 30 seconds

maximum

0.01 A N/A 1.5 % + 3 1.5 % + 3

DC Amps

(Models 111 and 112) 6.000 A

10.00 A

continuous or

20 A overload

for 30 seconds

maximum

0.001 A

0.01 A N/A 1.0 % + 3 1.0 % + 3

Hz6(V or A input ) 99.99 Hz

999.9 Hz

9.999 kHz

50.00 kHz

0.01 Hz

0.1 Hz

0.001 kHz

0.01 kHz 0.1 % + 2 0.1 % + 2 0.1 % + 2

MIN MAX AVG

Accuracy and

Response Time

Accuracy is the specified accuracy of the measurement function ±12 digits for changes >200

ms in duration (±40 digits in AC). Typical response time: 100 ms to 80 % of signal, except V

AC and A AC.

4. For film capacitors.

5. Crest factor of ≤3. AC current is not specified below 3A.

6. Hz is specified from 5 Hz to 50 kHz in volts, from 50 Hz to 5 kHz in amps.

Function Input Impedance

(Nominal) Common Mode Rejection Ratio Normal Mode

Rejection

Volts AC > 5 MΩ< 100 pF > 60 dB at DC, 50 Hz or 60 Hz

Volts DC > 10 MΩ< 100 pF > 100 dB at DC, 50 Hz or 60 Hz > 50 dB at 50 Hz or

60 Hz

Full Scale Voltage

Open Circuit Test

Voltage To 6 MΩ40 MΩShort Circuit Current

Ohms < 1.5 V DC < 600 mV DC < 1.5V DC < 500 µA

Diode test 2.4 to 3.0 V DC 2.400 V DC 1.2 mA typical

Models 110, 111 & 112

Calibration Information

Testing the Fuse (Models 111 and 112)

WWarning

To avoid electrical shock or injury, remove the test leads and any input signals

before replacing the fuse.

Test the fuse as shown below.

Ω

<.5 OK

aej12f.wmf

Figure 1. Testing the Fuse

Replacing the Battery and Fuse

WWarning

To avoid electric shock, injury, or damage to the Meter:

•Remove test leads from the Meter before opening the case or battery door.

•Use ONLY a fuse with the amperage, interrupt, voltage, and speed ratings

specified.

•Replace the battery as soon as the low battery indicator ( N) appears to

avoid false readings.

To replace the battery

1. Turn the rotary switch to OFF and remove the test leads from the terminals.

2. Lift the tilt stand to access the battery door.

3. Remove the screw from the battery door.

4. Use the finger recess to lift the battery door slightly.

5. Pull the door toward the bottom of the Meter to release the latch.

6. Lift the battery door straight up to separate it from the case. You can now remove and replace the

battery.

The battery fits inside the battery door, which is then inserted straight into the case until it clicks into

place. Do not attempt to install the battery directly into the case.

aej14f.wmf

Figure 2. Replacing the Battery

Models 110, 111 & 112

Calibration Information

To replace the fuse (Models 111 and 112)

1. Turn the rotary switch to OFF and remove the test leads from the terminals.

2. Remove the Meter from the protective yellow holster.

3. Remove the battery and battery door.

4. Remove the two screws holding the case together.

5. Remove the bottom case and set it aside.

6. Remove and replace the fuse.

7. Reassemble the case and reinstall the battery, battery door, screws, and holster.

aej15f.wmf

Figure 3. Replacing the Fuse

Replacing the LCD

You must remove the circuit board assembly to access and replace the LCD.

Caution

The circuit board is extremely susceptible to contamination. To avoid

contamination, handle it by the input receptacle, fuse clips, or edges of the

board only. You can also use clean surgical gloves to help avoid contamination.

To replace the LCD

1. Turn the rotary switch to OFF and remove the test leads from the terminals.

2. Open the case as described earlier.

3. Remove the 3 Phillips screws securing the input terminals to the case top.

4. Pry the board out of the case using the tip of a thin screwdriver. Lift the circuit board out carefully to

avoid contamination.

Pry here

aej17f.wmf

Figure 4. Removing Screws on the PCA

5. Carefully insert the tip of a thin screwdriver under the LCD mask at the top of the display as shown in

Figure 5.

6. 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. Tilt the LCD mask upward to release.

7. Replace the LCD. Center the LCD on the platform between the brackets before you replace the LCD

mask. If the LCD is improperly aligned, the display may show missing segments, meaningless

readings, or the LCD might break.

Models 110, 111 & 112

Calibration Information

LCD mask

LCD

aej18f.wmf

Figure 5. Removing the LCD Mask

8. Reattach the LCD mask by pressing it over the LCD until it snaps into place.

9. Place the PCA into the case top with the LCD showing through the window and snap the PCA into

place. Carefully replace the 3 Phillips screws that connect the PCA to the case top.

10. Verify that the rotary switch is in the OFF position.

11. Reassemble the case and reinstall the battery, battery door, screws, and holster.

Performance Tests

WWarning

To avoid electric shock, do not execute the performance tests procedures

unless the Meter is fully assembled.

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

each meter function against the Meter’s specifications (i.e., calibration). If the instrument 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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