Manual Profile PIN-144 (page 6 of 12) (English, German, French, Italian, Spanish)

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4. HOW TO USE THE MULTIMETER

PRELIMINARY NOTE:

1. If the battery is weak. a “ ” sign will appear on display. The battery

should be replaced

2. The mark or sign“ ”next to the test lead jacks is for warning

that the input voltage or current should not exceed the indicated values.

This is to prevent damage to internal circuitry.

3. The FUNCTION switch should be set to the range to be used before

operation.

4.1 DC Voltage Measurement

1) set the FUNCTION switch to “V ” range.

2) Connect the black test lead to the “COM” jack and the red test lead to

the “VΩ” jack.

3) Connect the test leads across the source or load under

measurement.

Note:

1. If the voltage range is not known beforehand. set the FUNCTION

switch to the highest range and work down .

2. when “1” is display, overrange is being indicated and the FUNCTION

switch must be set to a higher range .

3. Don’t apply more than DC 1000V to the input, indication is possible

at higher voltage but there is danger of damaging the internal circuitry .

4. Use extreme caution to avoid contact with high tension circuits when

measuring high voltage

4.2 AC Voltage Measurement

1) Set the FUNCTION switch to “V~” range.

2) Connect the black test lead to the “COM” jack and the red test lead to

the “VΩ” jack.

3) Connect the test leads across the source or load under

measurement.

Note:

1. Don’t apply more than 700Vrms AC to the input ,indication is

possible at higher voltage but there is danger of damaging the internal

circuity .

2. Use extreme caution to avoid contact with high tension circuits when

measuring high voltage.

4.3 DC current Measurement

(1) Set the FUNCTION switch to “A ” range.

(2) Connect the black test lead to the “COM” jack and the red test lead

to the “mA” jack for a maximum of 200mA. For a maximum of

20A ,move the red test lead to “20A” jack .

(3) Connect the test leads in series with the load under measurement.

Note:

1. If the current range is not known beforehand, set the FUNCTION

switch to high range and work down.

2. when “1” is display, overrange is being indicated and the FUNCTION

switch must be set to a higher range.

3. The maximum input current is 200mA, 20A depending upon the jack

used .Excessive current will blow the fuse and must be replaced . The

fuse rating should be 200mA or 20A and no more to prevent damage to

the internal circuitry .

4.4 AC Current Measurement

(1) Set the FUNCTION switch to “A～” range.

(2) Connect the black test lead to the “COM” jack and the red test

lead to the “mA” jack for a maximum of 200mA. For a maximum of

20A ,move the red test lead to “20A”jack.

(3) Connect the test leads in series with the load under

measurement.

Note :

1. If the current range is not known beforehand, set the FUNCTION

switch to high range and work down.

2. when “1” is display, overrange is being indicated and the FUNCTION

switch must be set to a higher range.

3. The maximum input current is 200mA, 20A depending upon the jack

used .Excessive current will blow the fuse and must be replaced . The

fuse rating should be 200mA or 20A and no more to prevent damage to

the internal circuitry .

4.5 Resistance Measurement

(1) Set the FUNCTION switch to “Ω ” range.

(2) Connect the black test lead to the “COM” jack and the red test

lead to the “VΩ” jack .

(3) Connect the test leads across the resistance under

measurement.

Note:

1. If the resistance value being measured exceeds the maximum value

of the range selected ,an over-range indication will be displayed (“1”).

Select a higher range. For resistance of approximately 1 Mega-ohm

and above, the meter may take a few seconds to stabilize. This is

normal for high resistance readings.

2. When the input is not connected, i.e. at open circuit, the sign “1” will

be displayed for the overrange condition.

When checking in-circuit resistance, be sure the circuit under test has

all power removed and that all capacitors are fully discharged .

4.6 Capacitance Measurement

(1) Set the FUNCTION switch to “F” range.

(2) Insert the capacitor under measurement into the two jacks “C-”

and “C+” on the front panel.

Note :

1. Capacitors should be discharged before being inserted into the

test-jacks.

2. When testing large capacitance, note that there will be a certain time

lag before the final indication.

3. Do not connect an external voltage or charged capacitor (especially

larger capacitors) to measuring terminals.

4.7 Frequency Measurement

(1) Set the FUNCTION switch to “200KHz” range.

(2) Connect the black test lead to the “COM” jack and the red test lead

to the “VΩ” jack .

(3) Connect the test leads to the point under measurement .

4.8 Temperature Measurement

(1) Set the FUNCTION switch to “℃”

(2) Connect the black test lead of the sensor to “T-” jack , the RED test

to “T+” jack.

Put the sensor probe into the temperature field under measurement .

A. This meter enclosures WRNM-010 type contact thermocouple,

limit temperature is 250 ℃ (300 ℃ shortly ) ;

B. Please don't change the thermocouple at will , otherwise we can't

guarantee to measure accuracy ;

C. Do not import any voltage in the temperature function .

4.9 Diode Measurement and audible continuity test

(1) Set the FUNCTION switch to the “ ” range and connect the

test leads across the diode under measurement, display shows the

approximate forward voltage of this diode.

(2) Connect the black test lead to “COM” jack and the red test lead to

the “VΩ” jack..

(3) Connect the test leads to two points of circuit, if the resistance is

lower than approximately 80Ω ,the buzzer sounds.

4.10 Backlight

Press the light button (4) to illuminate the display, press once again to

turn it off.

5.MAINTENANCE

(1) The multimeter is a precision electronic device. Do not tamper

with the circuitry to avoid damage:

A : Never connect more than 1000V DC or 750Vrms AC.

B : Never connect a source of voltage under the condition of

resistance measurement .

C : Never operate the meter unless the battery cover is in place and

fully closed .

D : Battery and / or fuse replacement should be done after the test

leads have been disconnected and POWER IS OFF .

(2) turn off the power if the meter is not in use , removed the battery if

the meter is not being used for long period .

(3) If the sign “ ” appears on the display, open the compartment

cover, remove the battery and replace it with a battery of the same type.

For fuse replacement follow the same steps .

6. WARRANTY

The guarantee period for PIN-144 amounts to 2 years and commences on the date

of purchase. During the guarantee period ELTRA NV will repair any defects

attributable to material or production faults. ELTRA NV may choose to either repair

or replace a defective appliance.

ELTRA NV is not obliged to repair or replace appliances if they have become

defective as a result of damage, inappropriate use, or modifications or

adaptations made after the purchase date.

Take any defective appliance together with the original receipt back to the shop

where the appliance was sold. Always add a note with a description of the

problem.

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