CEN-TECH 98674, Руководство по эксплуатации, Страница: 22 / 27

DIGITAL MULTIMETER
OPERATING INSTRUCTION
4.22 MEASURING TEMPERATURE
(WITH THERMOCOUPLE)
WARNING
Beware of electrocution.
To avoid electrical shock, do not connect the
thermocouples to charged circuits.
4.22.1 Turn the rotary selector to TEMP position.
4.22.2 “OL” will appear on the main display of the LCD at
this time.
4.22.3 Plug the red end of the ‘K’ type thermocouple into the
TEMP jack and black end into the COM jack. Touch
the surface of the object or area with the temperature
sensor for measurement.
4.22.4 Press the "
℃
/
℉
" button to choose
℃
or
℉
measurement.
4.22.5 Take the reading on the main indicator of the LCD.
NOTE:
The cold end compensation circuit used for measuring
temperature is placed inside the front part of the meter.
It may take a longer time to reach thermal balance with
the environment. Therefore the meter should be
exposed to the environment for a longer time for accurate
reading.
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DIGITAL MULTIMETER
OPERATING INSTRUCTION
4.23 MEASURING SOUND LEVEL (dB)
WARNING
To avoid damage to the meter, do not connect the
input plug to any electric signal.
4.23.1 Turn the rotary selector to the dB range position.
4.23.2 Point the sensor located in the front part of the meter
at the sound source.
4.23.3 The sound level in dB will be shown on the LCD.
NOTE:
Strong wind (over 10m/sec.) striking on the microphone
may cause misreading for measurement in windy
locations. A windscreen should be placed in front of the
microphone in such circumstances.
4.24 MEASURING LUMINANCE
WARNING
To avoid damage to the meter, do not connect the
input plug to any electric signal.
4.24.1 Turn the rotary selector to the Lux or ×10Lux range
position.
4.24.2 Point the sensor located in the front part of the meter
at the light source.
4.24.3 The luminance (in Lux) will be shown on the LCD.
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