MULTITESTER

SYSTEMS PLUS COMPUTER COLLEGE

“Commitment to Excellence”

ANALOG MULTITESTER

2 KINDS OF MULTITESTER

SYSTEMS PLUS COMPUTER COLLEGE

“Commitment to Excellence”

DIGITAL MULTITESTER

2 KINDS OF MULTIESTER

SYSTEMS PLUS COMPUTER COLLEGE

“Commitment to Excellence”

MULTIMETERIs an indispensable for a technician as firearms for aSoldier. The interpretation of readings gives technicianClues to trouble-shooting.

SYSTEMS PLUS COMPUTER COLLEGE

“Commitment to Excellence”

Zero ohms adjustments:

Use to set the pointer exactlyOn zero position at the right side of meter panel

Zero corrector:

Use to set the meter pointer toZero position at the left side ofThe meter panel

Range selector:

It is used to adjust the proper Function range for specific measurement

Dial pointer

Dial scale:

DC voltagerange

Voltmeter: is an instrument is usedMeasuring voltage or potential difference

Observed polarity in measuringDC voltage and current.

Always set at higher range of meter

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AC voltage range

1. Before taking a measurement,the pointer position should beconfirmed to zero on the top ohm scale.

2. With the + and – COM terminalsshorted together, the meter isadjusted by turning the zeroohm adj. to the right or left inorder to place on zero at right.

3. Always set the meter pointer onthe highest range of therefunction, if measuring an unknownvoltage or current.

SYSTEMS PLUS COMPUTER COLLEGE

Resistance

Ohmmeter : is an instrumentUsed for measuring resistance.

Always remember the:

1. Zero ohms adjustment2. Zero corrector

Test probe+ & -

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Dial scale

Zero corrector

AC voltage range

Dial selector

resistanceTest prove/socket

DC voltage

Zero ohmsadjustment

Dial pointer

Front panel

PARTS OF MULTITESTER

Voltmeter:

Is used when it is necessary to determine thepresence or absence of an electrical pressure or voltage on a unit under test.

Tester has two voltmeter functions:

1. AC or alternating current

2. DC or Direct current

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DC VOLTMETER:

1. When operating on .1 volt range, we utilize the 10 volts scale and Shift the decimal two places to the left. (.01 as multiplier )

Range usedRange used Scale usedScale used Scale readingScale reading multipliermultiplier Actual readingActual reading

DCV/0.1DCV/0.1 0-100-10 4.44.4 .01.01 0.440.44

Range usedRange used Scale usedScale used Scale readingScale reading multipliermultiplier Actual readingActual reading

DCV/0.1DCV/0.1 0-100-10 4.44.4 .01.01 0.440.44

DCV/.5DCV/.5 0-500-50 2222 .01.01 0.220.22

DC VOLTMETER:

2. If the instrument is operated on 0.5 v range, we utilize the 50 vscale and move the decimal point two places to the left.(.01 as multiplier )

Range usedRange used Scale usedScale used Scale readingScale reading multipliermultiplier Actual readingActual reading

DCV/0.1DCV/0.1 0-100-10 4.44.4 .01.01 0.440.44

DCV/.5DCV/.5 0-500-50 2222 .01.01 0.220.22

DCV/2.5DCV/2.5 0-2500-250 110110 .01.01 1.101.10

DC VOLTMETER:

3. When VOM is set to 2.5 v range, we use the 250 v scale and shiftthe decimal point two laces to d left ( .01 as multiplier )

Range usedRange used Scale usedScale used Scale readingScale reading multipliermultiplier Actual readingActual reading

DCV/0.1DCV/0.1 0-100-10 4.44.4 .01.01 0.440.44

DCV/.5DCV/.5 0-500-50 2222 .01.01 0.220.22

DCV/2.5DCV/2.5 0-2500-250 110110 .01.01 1.101.10

DCV/10DCV/10 0-100-10 4.44.4 11 4.44.4

DC VOLTMETER:

4. VOM is operated on 10 v range, we utilize the 10 v scale and read directly or set 1 as multiplier

Range usedRange used Scale usedScale used Scale readingScale reading multipliermultiplier Actual readingActual reading

DCV/0.1DCV/0.1 0-100-10 4.44.4 .01.01 0.440.44

DCV/.5DCV/.5 0-500-50 2222 .01.01 0.220.22

DCV/2.5DCV/2.5 0-2500-250 110110 .01.01 1.101.10

DCV/10DCV/10 0-100-10 4.44.4 11 4.44.4

DCV/50DCV/50 0-500-50 2222 11 2222

DC VOLTMETER:

5. VOM is operated on 50 v range, we utilize the 50 v scale and read directly or set 1 as multiplier

Range usedRange used Scale usedScale used Scale readingScale reading multipliermultiplier Actual readingActual reading

DCV/0.1DCV/0.1 0-100-10 4.44.4 .01.01 0.440.44

DCV/.5DCV/.5 0-500-50 2222 .01.01 0.220.22

DCV/2.5DCV/2.5 0-2500-250 110110 .01.01 1.101.10

DCV/10DCV/10 0-100-10 4.44.4 11 4.44.4

DCV/50DCV/50 0-500-50 2222 11 2222

DCV/250DCV/250 0-2500-250 110110 11 110110

DC VOLTMETER:

6. VOM is operated on 250 v range, we utilize the 250 v scale and read directly or set 1 as multiplier

Range usedRange used Scale usedScale used Scale readingScale reading multipliermultiplier Actual readingActual reading

DCV/0.1DCV/0.1 0-100-10 4.44.4 .01.01 0.440.44

DCV/.5DCV/.5 0-500-50 2222 .01.01 0.220.22

DCV/2.5DCV/2.5 0-2500-250 110110 .01.01 1.101.10

DCV/10DCV/10 0-100-10 4.44.4 11 4.44.4

DCV/50DCV/50 0-500-50 2222 11 2222DCV/250DCV/250 0-2500-250 110110 11 110110DCV/1000DCV/1000 0-100-10 4.44.4 100100 440440

DC VOLTMETER: 7. VOM is operated on 1000 v

range, we utilize the 25 v scale andshift decimal point two places to d right ( 100 as multiplier )

Range usedRange used Scale usedScale used Scale readingScale reading multipliermultiplier Actual readingActual reading

DCV/0.1DCV/0.1 0-100-10 4.44.4 .01.01 0.440.44

DCV/.5DCV/.5 0-500-50 2222 .01.01 0.220.22

DCV/2.5DCV/2.5 0-2500-250 110110 .01.01 1.101.10

DCV/10DCV/10 0-100-10 4.44.4 11 4.44.4

DCV/50DCV/50 0-500-50 2222 11 2222

DCV/250DCV/250 0-2500-250 110110 11 110110DCV/1000DCV/1000 0-100-10 4.44.4 100100 440440

DC VOLTMETER

AC VOLTMETER READING

Range Range usedused

Scale Scale usedused

Scale Scale readingreading

multipliermultiplier Actual Actual readingreading

ACV/10ACV/10 0-100-10 2.42.4 11 2.42.4

ACV/50ACV/50 0-500-50 1212 11 1212

ACV/250ACV/250 0-2500-250 6060 11 6060

ACV/1000ACV/1000 0-100-10 2.42.4 100100 240240

AC VOLTMETER READING CHART

DC CURRENT METER

RANGE RANGE USEDUSED

SCALE SCALE USEDUSED

SCALE SCALE READINGREADING

MULTIPLIERMULTIPLIER ACTUAL ACTUAL READINGREADING

DCA/50 UADCA/50 UA 0-500-50 3232 11 32UA32UADCA/2.5MADCA/2.5MA 0-2500-250 160160 .01.01 1.6MA1.6MA

DCA/25 MADCA/25 MA 0-2500-250 160160 .01.01 1.6MA1.6MA

DCA/.25ADCA/.25A 0-2500-250 160160 .001.001 .16A.16A

1. 50 Micro ampere range, we utilize the 50 v scale and read directly

RANGE RANGE USEDUSED

SCALE SCALE USEDUSED

SCALE SCALE READINGREADING

MULTIPLIERMULTIPLIER ACTUAL ACTUAL READINGREADING

DCA/50 UADCA/50 UA 0-500-50 3232 11 32UA32UA

DCA/2.5MADCA/2.5MA 0-2500-250 160160 .01.01 1.6MA1.6MA

DCA/25 MADCA/25 MA 0-2500-250 160160 .01.01 1.6MA1.6MA

DCA/.25ADCA/.25A 0-2500-250 160160 .001.001 .16A.16A

2. To read current in the 2.5ma range, read the 0-250and move decimal point to places to d left

RANGE RANGE USEDUSED

SCALE SCALE USEDUSED

SCALE SCALE READINGREADING

MULTIPLIERMULTIPLIER ACTUAL ACTUAL READINGREADING

DCA/50 UADCA/50 UA 0-500-50 3232 11 32UA32UA

DCA/2.5MADCA/2.5MA 0-2500-250 160160 .01.01 1.6MA1.6MA

DCA/25 MADCA/25 MA 0-2500-250 160160 .01.01 1.6MA1.6MA

DCA/.25ADCA/.25A 0-2500-250 160160 .001.001 .16A.16A

3. Move decimal point just once to the left

RANGE RANGE USEDUSED

SCALE SCALE USEDUSED

SCALE SCALE READINGREADING

MULTIPLIERMULTIPLIER ACTUAL ACTUAL READINGREADING

DCA/50 UADCA/50 UA 0-500-50 3232 11 32UA32UA

DCA/2.5MADCA/2.5MA 0-2500-250 160160 .01.01 1.6MA1.6MA

DCA/25 MADCA/25 MA 0-2500-250 160160 .01.01 1.6MA1.6MA

DCA/.25ADCA/.25A 0-2500-250 160160 .001.001 .16A.16A

4. Move decimal point 3 places to d left

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Testing voltage:

From battery whichIs a DC voltage

PARTS OF MULTITESTER

1

2

34

5

6

7

8

910