Isotech IPM 138 Manual de usuario

Instruction Manual

IPM 138

Clamp Multimeter

EN DE ES IT FR



EN-2

Safety Information

Read and understand this Instruction Manual completely

before using this instrument. Failure to observe the warnings

and cautions in this Instruction Manual may result in injury or

death, or damage to the instrument and other equipment or

property.

If this instrument is used in a manner not specified in these

instructions, the protection provided by the instrument may be

impaired. WARNING

-Examine the instrument and probes and leads before use.

Do not use the instrument if it is wet or damaged, or if you

suspect it is not operating correctly.

-When using the instrument, test leads or probes, keep your

fingers behind the finger guards.

-Remove the test lead from the instrument before opening the

battery cover or instrument case.

-Always use the correct terminals, switch position and range

for measurements.

-Verify the instrument is operating correctly by measuring a

known voltage before use. If in doubt, have the instrument

serviced.

-Do not apply more than the rated voltage as marked on the

instrument between terminals, or between any terminal and

earth ground.

-Use caution when measuring voltages above 30 Vac rms or

60 Vdc. These voltages pose a shock hazard.

-To avoid incorrect readings that can lead to electric shock,

replace the battery as soon as low battery indicator 

appears in the display.

-Disconnect the circuit power and discharge all high-voltage

capacitors before making resistance, continuity, or diode

measurements.

- Do not use the instrument in a Hazardous Area or around

explosive gasses or vapours.

-Wear suitable Personal Protective Equipment when working

around or near hazardous Live conductors which could be

accessible.

-Do not use the thermocouple to measure the temperature of

Hazardous Live conductors or equipment.

Caution

-Disconnect the test leads from the test points before changing

the position of the function rotary switch.

-Never connect the instrument to a source of voltage with the

function rotary switch in Ω/ </Aposition.

EN-3

- If possible, do not work alone, so assistance can be given if

required.

-Do not expose the instrument to extremes of temperature or

high humidity.

-If this instrument is used in the vicinity of equipment which

generates electro magnetic interference, the display may

become unstable or the measurements may be subject to

large errors.

-Do not take temperature measurements immediately after

taking high voltage measurements as the accuracy of

measurements may be impaired. Allow a minimum of 5 min-

utes for the instrument to stabilize before taking temperature

measurements.

The following symbols may appear on the

instrument and in this Instruction Manual:

Maintenance

Do not attempt to repair this Instrument. It contains no user-

serviceable parts. Repair or servicing should only be performed

by qualified personnel. This instrument should be calibrated

yearly, or more frequently if used in harsh conditions or if it is

suspected of being inaccurate.

For calibration and repair contact RS Components - the

address is given at the end of these instructions.

Cleaning

Periodically wipe the case with a damp cloth and detergent.

Do not use abrasives or solvents.

Risk of electric shock

Refer to Instruction Manual

Direct Current (dc)

Alternating Current (ac)

=Battery

Earth

Equipment protected throughout by double or reinforced

insulation

Conforms to EU directives

Dispose of this equipment in accordance with local

regulations.

FApplication around and removal from hazardous Live

conductors is permitted.

EN-4

Power On/ Off

Auto Power Off

The Auto Power-off function will turn the instrument off

approximately 10 minutes after the last operation. To turn the

instrument on again, turn the rotary switch to the off position

and then back to the required function.

10min

To disable the Auto Power-off function:

Turn the instrument off, press and hold the “PEAK” button and

turn the rotary switch to the required function. The “APO”

symbol will not appear in the display. The auto Power-off is

disabled until the next time the instrument is turned off and on

again.

EN-5

- If the measured voltage is greater than 42 V DC or AC RMS,

the display will show "" and the buzzer beeps three times.

- If the measured voltage exceeds 1000 V DC or AC RMS, the

display will show "OL".

-If the measured frequency exceeds 1000 Hz , the display

will show " out. F ".

1. VOLTAGE /CURRENT Measurement

1-1 Voltage testing procedures

1. Plug the Black test lead into the COM terminal and the

Red test lead into the V-Ωterminal.

2. Set the rotary switch to the VBposition.

3. Connect the test leads to the device to be measured.

4. Read the value from digital display.

EN-6

1-2 Current testing procedure

Note : Do not clamp the jaws around a conductor while the

instrument power is on.

1. Press the trigger to open the transformer jaws and clamp

around one conductor only. Ensure the jaw is firmly closed

around the conductor.

2. Set the rotary switch to the AB position.

3. Read the value from digital display.

OK I + (-I) = 0

- If the measured current exceeds 620 A DC or AC RMS,

the display will show "OL" .

-If the measured frequency exceeds 1000Hz , the display

will show " out. F ".

12A

590A

CAT.Ⅲ.600V

with respect to

earth for the jaw.

Barrier for

Hand Guard

Do not hold

the meter across

the Barrier

EN-7

1-3 Button Function

1-3-1 BLUE BUTTON: Press the Blue button to choose

Auto AC or DC, AC, DC, or AC+DC measurement.

nAuto AC/DC mode (AC or DC flashing):

The displayed value will be the AC only RMS value or the

DC value, whichever is greater.

oAC mode : AC only with RMS value.

pDC mode : DC value.

qAC+DC mode : AC+DC RMS value.

EN-8

1-3-2 PEAK BUTTON (HZ/THD press for 2 sec):

- Auto AC, AC and AC+DC MODE are available for voltage

and current measurement.

a. PEAK HOLD

nNormal: Normal Operation.

oPeak Max : The instrument is activated to save the positive

peak value and the negative peak value. The positive peak

value is displayed.

pPeak Min : The instrument is activated to save the positive

peak value and negative peak value. The negative peak

value is displayed.

NOTE: Press the HOLD button in PEAK HOLD mode to stop

the instrument updating the positive and negative peak val-

ues. When the HOLD mode is nested in PEAK HOLD mode,

the HOLD mode must be released before the PEAK HOLD

mode.

Overrange display :

OL: Peak Max value > 1400V or > 850 A

-OL: Peak Min value < -1400V or < -850 A

EN-9

b. HZ/THD (=THD-R) Measurement：

- THD-R= RMS of Harmonics ÷ Total RMS of fundamental

and Harmonics ×100% (Harmonics up to 25th.)

Overrange display:

OL.U :Voltage overload (Vrms > 1000V)

OL.A :Current overload (Arms > 620A)

EN-10

1-3-3 INRUSH BUTTON (Max Min press for 2 sec):

a. MAX MIN MODE:

-MAX MIN MODE is available for all functions.

nNormal : Normal Operation.

oMAX MIN (flashing) : The instrument is activated to save

the maximum and minimum value. The present value is

displayed.

pMAX : The instrument is activated to save the maximum

and minimum value. The maximum value is displayed.

qMIN : The instrument is activated to save the maximum

and minimum value. The minimum value is displayed.

NOTE :

- Press the HOLD button in MAX MIN mode to stop the

instrument updating the maximum and minimum values.

When the HOLD mode is nested in MAX MIN mode, the

HOLD mode must be released before the MAX MIN mode.

-Auto Power Off is disabled in MAX MIN mode.

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