UNI-T UT 61+ Series User Manual page 12

11. Temperature Measurement (UT61D+, Picture 14)
Digital Multimeter-HVAC
USB
A
FUSED
250V max
MAX 10sec
EACH 15min
Picture 14
1) Turn the function dial to the °C°F position.
2) Insert the K-type thermocouple into the
correct polarity.
3) Bring the temperature sensing end of the thermocouple close to the object
surface under test.
4) Read the Celsius temperature value on the display after it gets steady.
5) Short press the SELECT button to switch between °C and °F.
Caution:
Only K-type thermocouple is applicable.
The LCD displays "OL" when the meter is turned on.
The measured temperature should be less than 230°C/446°F
(°F = °C × 1.8 + 32)
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and COM terminals, observing
12. AC/DC Current Measurement (Picture 15)
Picture 15
1) Insert the red test lead into the mA/μA or A terminal, and black test lead into
the COM terminal.
2) Turn the function dial to the ,
3) Short press the SELECT button to switch to AC/DC current measurement if
required.
4) Connect the test leads with the measured load or power supply in series.
5) Read the current value on the display (if the current is >10A, the red indicator
light will be on and the buzzer will sound an alarm).
6) When measuring AC current, short press the
frequency/duty ratio of the measured current.
Caution:
To prevent possible electric shock, fire, or personal injury, switch off the power
supply of the circuit, and then connect the meter with the circuit in series before
measuring the current.
If the range of the measured current is unknown, select the maximum range
and then accordingly reduce.
There are fuses inside mA/μA and A input terminals. Do not connect the test
leads with any circuit in parallel.
When the measured current is >5A, each measurement time should be ≤10s
and the rest interval should be ≥15 minutes.
When the temperature in the meter is ≥75°C after measurement of large current,
the yellow indicator light will be on, the buzzer will beep, and the LCD will display
"CUT". When the temperature drops to <40°C, the yellow indicator light will be
off, and the measurement can be made.
AC/DC
RL
RL
, or position.
button to display the
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