Note
：
The maximum temperature of the K-type thermocouple with random dispensing is 250
℃
4.16
Non - contact voltage measurement
（
NCV)
The function range switch is set to NCV range position. At this time, the instrument
displays "NCV" and "EF" symbol, and the top of the instrument is close to the object
to be tested such as mains, power switch, socket and so on. When the detected voltage
is greater than 110V (AC RMS), the instrument NCV indicator will be lit and the buzzer
will sound an alarm.
note:
1) The voltage may still be present even if there is no indication. Do not rely on
non-contact voltage detectors to determine if there is voltage on the shielded wire.
The detection operation may be affected by factors such as socket design, insulation
thickness and type.
2) When the instrument input terminal input voltage, due to the presence of induced
voltage, the voltage sensor indicator may also be bright.
3) External sources of interference (such as flash, motor, etc.) may be mistakenly
triggered by non-contact voltage detection.
5
Maintenance
5.1 Replacement battery
In order to avoid the wrong reading caused by electric shock or personal
injury, instrument display appears
“
”
Symbol, you should replace the battery immediately.
To avoid electrical shock or personal injury, turn off the battery cover before
replacing the battery, and check that the test leads have been disconnected from
the measuring circuit.
Follow the steps below to replace the battery
1) Turn off the instrument power supply. 22
