Fluke III Series Manuale utente

70/73 English Instruction Sheet

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70/73

Series III Multimeter

Instruction Sheet

WRead First: Safety Information

To ensure that the meter is used safely, follow these instructions:

•Never use the meter if the meter or test leads look damaged.

•Be sure the test leads and rotary switch are in the correct

position for the desired measurement.

•Never measure resistance in a circuit when power is applied.

•Never touch the probes to a voltage source when the test

leads are plugged into the 10 A or 300 mA input jack.

•To avoid damage or injury, never use the meter on circuits that

exceed 4800 volt-amps.

•Never apply more than the rated voltage between any input

jack and earth ground.

•Be careful when working with voltages above 60 V dc or 30 V

ac rms. Such voltages pose a shock hazard.

•Keep your fingers behind the finger guards on the test probes

when making measurements.

Warning

To avoid false readings, which could lead to

possible electric shock or personal injury, replace

the battery as soon as the battery indicator (N)

appears.

Symbols

WRead First: Safety Information

ZManual Range or Automatic Touch Holdmode

TDouble Insulation

CAT II Overvoltage Installation Category per IEC 1010-1.

Typical CAT II locations include main wall outlets,

local appliances, and portable equipment.

PN 650454 August 1997 Rev.2, 2/98

All product names are trademarks of their respective companies.

70/73 English Instruction Sheet

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Input Jacks

300

10A

COM

FUSED

Milliamps

Amps Volts, Ohms, Diode Test

Common Terminal

600V

hr2f.eps

See Specifications for overload protection.

Pushbutton

Use the pushbutton to either select a fixed range or put the meter

in the Automatic Touch Holdmode.

Autorange

The meter defaults to autorange when first turned on.

Manual Range

Manual ranging is available in V ac, V dc, ohms, A ac, and A dc.

Momentary

hr14f.eps

To return to autorange, press Rfor 1 second or turn the

rotary switch.

70/73 English Instruction Sheet

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Automatic Touch Hold



Mode

WWarning

To avoid electric shock, do not use the Touch Hold

to determine if a circuit with high voltage is dead.

The Touch Holdmode will not capture unstable or

noisy readings.

The Touch Holdmode automatically captures and displays

stable readings. Press Rfor 2 seconds while turning the

meter on.

2 seconds

V DC V DC

_+_

V DC

single

beep

V V V

hr3f.eps

When the meter captures a new input, it beeps and a new

reading is displayed. To manually force a new measurement to

be held, press R.

Note

Stray voltages can produce a new reading.

To exit the Touch Holdmode, turn the meter off.

Bar Graph

The bar graph shows readings relative to the full scale value of a

displayed measurement range and indicates polarity.

hr16f.eps

70/73 English Instruction Sheet

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Standby

If the meter is on but is inactive for an hour (20 minutes in diode

test), the screen goes blank and displays selected bar graph

segments. To resume operation, turn the rotary switch or press

AC and DC Voltage

(KLmL)

+_+_

V AC V DC

Volts AC Volts DC Millivolts DC

hr4f.eps

Resistance

(e)

Turn off the power and discharge all capacitors. An external

voltage across a component will give invalid resistance readings.

hr6f.eps

70/73 English Instruction Sheet

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Diode Test

(G)

Forward Bias

Single Beep

Reverse Bias

Shorted

Open or

Good Diode

Bad Diode

Good Diode

hr7f.eps

70/73 English Instruction Sheet

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Continuity Test

( R)

+_+_

hr5f.eps

If continuity exists (resistance < 210 Ω), the beeper sounds

continuously. The meter beeps twice if it is in the Touch Hold

mode.

Current

(?A)

WWarning

To avoid injury, do not attempt a current

measurement if the open circuit voltage is above the

rated voltage of the meter.

To avoid blowing an input fuse, use the 10 A jack until you are

sure that the current is less than 300 mA.

Turn off power to the circuit. Break the circuit. (For circuits of

more than 10 amps, use a current clamp.) Put the meter in series

with the circuit as shown and turn power on.

hr8f.eps

70/73 English Instruction Sheet

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Holster

The snap-on holster absorbs shocks and protects the meter and

comes with a Flex-Stand. To protect the front of the meter, put

the meter face down in the holster.

hr15f.eps

Maintenance

WWarning

To avoid electric shock, remove the test leads

before opening the case, and close the case before

using the meter. To prevent fire and possible arc-

flash, use fuses with ratings shown on the back of

the meter.

Caution

To avoid damaging meter components, lift up the

end of the battery as shown. To avoid

contamination or static damage, do not touch the

circuit board without proper static protection.

70/73 English Instruction Sheet

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Internal Fuse Test

300 mA

Ω

5-8 Ω

<0.5

OK OK

10 A

hr10f.eps

Battery and Fuse Replacement

Note

Before opening the case, make sure the test leads are

removed and the rotary switch is turned to OFF.

F1 F2

hr11f.eps

70/73 English Instruction Sheet

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Cleaning

To clean the meter, use a damp cloth and mild detergent; do not

use abrasives or solvents on the meter.

Service and Parts

For service information in the U.S.A. and Canada, call 1-800-44-

FLUKE (1-800-443-5853), in Europe, 31 40 267 8200, from other

countries, 1-425-356-5500.

Item Description Fluke

PN Quan.

BT1 Battery, 9 V, NEDA 1604/IEC 6F22, or

NEDA 1604A/IEC 6LR61 696534

614487 1

F1* Fuse, F630 mA, 250 V, Min Interrupt

Rating 1500 A, IEC 127-1 740670 1

F2* Fuse, F11 A, 1000 VAC/DC, Min

Interrupt Rating 17 kA 943118 1

* For safety, use exact replacement

Specifications

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%. AC

conversions are ac-coupled, average responding, and calibrated

to the RMS value of a sine wave input.

Accuracy specifications are given as:

±([% of reading] + [number of least significant digits])

Maximum Voltage Between

any Terminal and Earth

Ground

600 V

Display Digital: 3,200 counts, updates 2.5/sec

Analog: 31 segments, updates 25/sec

Response Time of Digital

Display V ac < 2 s

V dc < 1 s

Ω< 1 s to 320 kΩ, < 2s to 3.2 MΩ,

< 10 s to 32 MΩ

Operating Temperature 0°C to 50°C

Storage Temperature -40°C to 60°C

Temperature Coefficient 0.1 x (specified accuracy)/°C

(<18°C or >28°C)

70/73 English Instruction Sheet

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Electromagnetic Compatibility

in RF field of 3 V/m on all

functions except MΩ

Total accuracy = Specified accuracy

plus +2.0% of range for all functions

except:

320.0 mV range: total accuracy =

specified accuracy + 1.0% of range

320.0Ωrange: total accuracy =

specified accuracy + 8% of range

Relative Humidity

except 32 MΩRange:

32 MΩRange only:

0% to 90% (0°C to 35°C)

0% to 70% (35°C to 50°C)

0% to 80% (0°C to 35°C)

0% to 70% (35°C to 50°C)

Altitude Operating: 2000 meters

Storage: 12,000 meters

Battery Type 9 V, NEDA 1604 or 6F22 or 006P,

or NEDA 1604A or 6LR61

Battery Life 2000 hrs typical with alkaline

1600 hrs typical with carbon zinc

Continuity Beeper 4096 Hz

Shock, Vibration per MIL-T-PRF 28800F Class III,

Sinusoidal, Non Operating

Size (H x W x L) 2.8 cm x 7.5 cm x 16.6 cm

(1.12 in x 2.95 in x 6.55 in)

Weight 340 g (12.0 oz)

Safety 600 V CAT II per ANSI/ISA S82.01-

1994, EN 61010-1: 1993, CSA C22.2

No 1010.1-92, UL 3111-1.

EMC Regulations EN 61326-1: 1997

Certifications/Listings

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