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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DIGITAL MULTIMETER
OPERATING
INSTRUCTION
NOTE:
1
）
When only ‘OL’ appears on the LCD, it means
over-range and a higher range should be selected.
2
）
Spectral sensitivity characteristic:
20
400
80
60
40
100
500 600 700 800 900 1000
R
el
at
iv
e
Se
ns
iti
vi
ty
(%
)
Wave Length (nm)
3
）
Recommended luminance:
Location
Lux
70~150
70~150
200 ~ 750
500~1000
750~2000
Home
wardrobe, bedroom, lavatory,
staircase, corridor
living-room, study, toilet, kitchen
writing, working
handicraft, dressmaking work
Office
conference room, reception room
200 ~ 750
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DIGITAL MULTIMETER
OPERAT
INSTRUCTION
ING
700 ~ 1,500
ing
0 ~ 2,000
150 ~ 300
300 ~ 750
750 ~ 1,500
1,500 ~ 3,000
100 ~ 200
200 ~1,000
150 ~ 200
750 ~ 1,500
1,500 ~ 3,000
100 ~ 200
300 ~ 750
750 ~ 1,500
100 ~ 300
200 ~ 750
clerical work
typing
Factory
packing, passage
assembly line
inspection work
electronic parts assembly line
Hotel
public places, washroom
reception, front desk
Shop
staircase, corridor
display window, packing bench
shop window
Hospital
ward, warehouse
medical examination room
operation theatre, A&E ward
School
auditorium, indoor gymnasium
classroom
laboratory, library
500 ~ 1,500
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DIGITAL MULTIMETER
OPERAT
INSTRUCTION
ING
