Amprobe FS-3 Operating Instructions - Page 2

Browse online or download pdf Operating Instructions for Measuring Instruments Amprobe FS-3. Amprobe FS-3 2 pages. Volt• amp • ohm • temperature flat scale clamp-ons

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LIMITED WARRANTY

general

Congratulations! You are now the owner of an AMPROBE®

instrument. It has been quality crafted according to quality

standards and contains quality components and workman¬

ship. This instrument has been inspected for proper opera¬

tion of all of its functions. It has been tested by qualified

factory technicians according to the long-established

standards of AMPROBE INSTRUMENT.

Your -AMPROBE instrument has a limited warranty

against defective materials and/or workmanship for one

year from the date of purchase provided that, in the opin¬

ion of the factory, the instrument has not been tampered

with or taken apart.

Should your Instrument fall due to defective materials, and/or

workmanship during the one-year warranty period, return it

along with a copy of your dated bill of sale which must iden¬

tify instrument by model number and Mfg. number.

For your protection, please use the instrument as soon as

possible. If damaged, or should the need arise to return

your instrument, it must be securely wrapped (to prevent

damage in transit) and sent prepaid via Air Parcel Post in¬

sured or UPS where available to:

Service Division

AMPROBE INSTRUMENT

630 Merrick Road (For U.P.S.)

P.O. Box 329 (For P.P.)

Lynbrook, NY 11563-0329

Outside the U.S.A. the local Amprobe representative will

assist you. Above limited warranty covers repair and

replacement of instrument only and no other obligation is

stated or implied.

PRECAUTIONS FOR PERSONAL

AND INSTRUMENT SAFETY

IMPORTANT:

1. Read these instructions thoroughly and follow

them carefully.

2. In many instances you will be working with

dangerous levels of voltage and/or current,

therefore, it is important you avoid direct contact

with any uninsulated, current-carrying surfaces.

Appropriate

insulating

gloves

and

clothing

should be worn.

3. Before connecting or disconnecting the voltmeter

to or from the circuit to be tested, turn off all

power to the circuit.

4. Before applying test leads to circuit under test,

make certain that leads are plugged into proper

jacks and switches are set to proper range and

function.

5. Before using any electrical instruments or tester

for actual testing, the unit should be checked on a

low energy high impedance source. Do not use

power distribution lines or any other high energy

sources.

6. Make certain no voltage is present in circuit,

before connecting ohmmeter to circuit.

7. The jaws of clamp-on instruments should not,

under any circumstances, be used as a device to

hold or hang the instrument. When using the

instrument as a voltmeter or ohmmeter, never

clamp the jaws around or on to a conductor box or

anything else — conducting or non-conducting.

Models FS-3, FS-3C are supplied with a set of test leads

(VL-11S) and an 0.5 Amp fuse. Temperature Probes and

other accessories are available separately.

The Flat Scale Clamp-Ons FS-3, FS-3C are capable of

measuring Volts, Amps, Ohms and Temperature. By turn¬

ing the rotary switch to the particular area, any one of these

functions can be selected. No separate attachment is

necessary for ohms. Temperature measurements can easi¬

ly be made by inserting probe in side of instrument housing.

Refer to individual instructions for each function.

The ohmmeter of the FS-3, FS-3C uses an "AA" battery

and an 0.5 amp 250 volt fuse. To replace either fuse or bat¬

tery remove two screws on back case, slide case horizon¬

tally toward you and lift off. See Fig. 2. Replace with cor¬

rect fuse. See page 6. Observe proper polarity when

replacing battery.

SPECIFICATIONS OF FS-3 & FS-3C

Functions: Volts AC, Amps AC, Ohms, Temperature

Ranges: 6, 15, 40, 100, 300 Amps

150, 300, 600 Volts AC

RX1 and RX100 Ohms with 25 Ohms midscale

on RX1

FS-3 - 25° F to 225° F

FS-3C -32°C to 107°C

Frequency: 50/60 HZ.

Accuracy: ± 3% of F.S. on Amps, Volts

± 3% of Scale Length Ohms, Temperature

Battery: 1 "AA"

Fuse:t).5 Amps 250V - Fast blow

How to Take

CURRENT READINGS

1. Make certain meter lock is in off position. See Fig. 1.

Meter is free when button is pushed to the far right.

2. Make sure pointer is reading zero. For greater ac¬

curacy, the pointer should be set on the zero line. This

is done by manually moving the zero adjust screw. See

Fig. 1.

3. Turn rotary switch to highest current range if current to

be measured is unknown.

4. Press trigger to open jaws.

5. Encircle conductor with transformer jaws.

6. Release trigger and be sure that jaws close properly

before taking reading.

7. If reading is below half scale, move rotary switch to the

next lower range. Keep moving rotary switch to lower

ranges until pointer is indicating in the upper half of

the scale.

How to Take

VOLTAGE READINGS

IMPORTANT

Read "PRECAUTIONS FOR PERSONAL AND

INSTRUMENT SAFETY" before using instrument.

1. Insert bayonet type voltage test leads into voltage

receptacles at bottom of instrument. Push against

receptacle spring and twist to lock in place. See Fig. 3.

2. Turn rotary switch to highest voltage range if voltage

to be measured is unknown.

3. Connect one alligator clip to one side of voltage to be

measured. Then with meter in one hand touch the

other side of voltage source with other lead. If reading

is below half scale move rotary switch to the next

lower range. Keep moving rotary switch to lower

ranges until pointer is indicating in the upper half of

the scale.

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