Amprobe RS-3 Instruções de utilização - Página 2

Procurar online ou descarregar pdf Instruções de utilização para Instrumentos de medição Amprobe RS-3. Amprobe RS-3 4 páginas. Rotary scale clamp-on

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PRECAUTIONS FOR PERSONAL

AND INSTRUMENT SAFETY.

IMPORTANT:

1. Read these instructions thoroughly and follow them carefully.

2. In any instances, you will be working withdangerous levelsofvoltage

and/or current, therefore, it is important that you avoid direct contact with

any uninsulated, current-carrying surfaces. Appropriate insulating gloves

should be worn.

3. Before connecting or disconnecting the voltmeter to or from the circuit to

be tested, turn off power to the circuit.

4. Before applying test leads to circuit under test, make certain:

a. Proper test leads are plugged into correct instrument jacks, and

b. Selector switch is set to proper range.

5. Before using any electrical instrument or tester for actual testing,

the unit should be checked on a known Iive line to make certain it is

operating properly.

6. Make certain no voltages is present in circuit, before connecting ohmme-

ter 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 on

to a conductor box or anything else - conducting or non-conducting. For

easier and faster voltage and resistance tests, we recommend Extendo

Leads, available from your AMPROBE distributor.

8. When measuring voltage or current with models that have an ohmmeter,

remove the ohmmeter battery/fuse attachment from the instrument.

Under no condition must the ohmmeter battery/fuse attachment be left

plugged in whendoingampsorvoltsmeasurement.Usetheohmmeter

battery/fuse attachment only when taking resistance measurements.

9. When making ohms measurement, be sure that theohmmeter attachment

is model OHB-3HE. This is the only attachment that should be used with

the RS-3.

10. Failure to follow these precautions, can result in instrument damage and

or personal injury.

11. Before interpreting a reading on the Instrument be sure that the Pointer

lock is free or in the off position. The pointer is free when button is at

left position (See Fig. 2).

ZERO ADJUSTMENT

For greater accuracy, the pointer should

be set on the zero line. This is done with

the zero adjustment screw. If while turn-

Adjust

ing the zero adjust screw, the pointer

Screw

swings away from the zero line, and will

not come to reset directly over it, it is

possible that the scale window is stati-

Fig.1

cally charged. To neutralize - clean win-

dow with fluid from SCK-100 Anti Static

Cleaning Kit.

HOW TO TAKE CURRENT READINGS

(See Pages 2 and 5 for range-expanding accessories)

(All ampere ranges are printed black)

IMPORTANT

READ "Precautions for Personal and Instrument Safety"

before using instrument.

1. Make certain pointer Locks is in "OFF" position.

Pointer is free when

button is at left.

Pointer

TO PREVENT DAMAGE

Lock

TO INSTRUMENT D O

Button

N O T S TORE IT W I T H

POINTER IN LOCKED

POSITION.

PAGE 1

2. Turn rotary scale selector until

highest current range appears in

window

3. Press trigger button to open Jaws

4. Encircle one conductor with the

Transformer Jaws

5. Release finger pressure on Trigger

toallowProbeJawstoclose around

the conductor before attempting to

read the meter

6. If pointer indicates

below 40 Amps

(Fig 5)

DON'T READ

YET

8. If the reading is below half scale on the lowest range of the

meter and greater accuracy is desired either one of the foll-

owing methods can be used

a. Loop the Conductor two or more 1,me, around the trans

former laws and divide the reading by the number at turns.

Zero

b. Use the AMPROBE Energizer. It increases current measur-

ing sensitivity 10 times 0-6 amp range becomes 0-0 6 amps.

Can also be used to take voltage measurements at recepta-

clesunderloadconditions.EnergizerGroundAdapter

available separately as an accessory enables A-47Lto be

used for taking current measurements on 115VAC/15Amp

equipment with ground plug while maintaining existing

equipment ground circuit! See Fig 7

Fig. 7

Rotary

Scale

Selector

Fig. 2

Both conductors

Fig 3

7. Set Rotary scale

selector to next

current range

until a reading is

obtained in the

upperhall of scale.

Fig. 5

Fig. 6

A D P46,

Energizer model A-47L

Ground Adaptor ADP-46

PAGE 2

HOW TO TAKE VOLTAGE READINGS

(All voltage ranges are printed red )

WRONG!

IMPORTANT:

Try it

Read "Precautions for Personal and Instrumental Safety"

again

before using instrument.

Right!

watch

1. Insert bayonet type voltage test leads

the pointer

into Voltage replacements at bottom of

instrument. Push against receptacle

spring and twist to lock in place (Fig 8)

Fig 4

2. Turn Rotary Scale Selector until highest

voltage range -600 volts-appears

in window.

3. Connect one alligator Clip to one side of

line. Then with meter in one hand, touch

the other side of the line with the other

alligator clip. If voltage does not exceed

600 volts, attach second alligator clip and

read voltage on red scale.

4. If voltage does not exceed 300 volt, turn

rotary scale selector clockwise until the

300 volt range is visible.

5. If voltage does not exceed 150 volt, turn

rotary scale selector clockwise once

more until 150 volts scale is visible

in window.

HOW TO READ THE SCALE

Let assume the pointer is at the position indicated in the illustra-

tion. The reading will be as follows, depending on the setting of

the range selector.

Fig.10

Pointer Reads 440 Volts. Each

between 400 & 500 is

is 20 volts.

Fig.11

Pointer Reads 78 Amps. Heavy

mark between 60 & 80 is 70 amps.

Each subdivision between 60 & 80

is 2 amps.

Fig.12

Pointer reads 12.7 Amps. Heavy

mark above 12 is 13 amps. Each

subdivision between 12 & 15 is 5

amp.

Fig. 8

Fig. 9

Fig. 10

Fig. 11

Fig. 12

PAGE 3