User Manual

23 24
AC Current Measurement
Note:
2. DC Current Measurement (Picture 5)
Note:
The current measurement must be taken within 0°C~40°C. For DC current
measurement, if the reading is positive, the direction of current is from top to
bottom (from panel to cover). Do not suddenly release the trigger, as the impact
will change the reading for a short time.
withinTo ensure measurement accuracy, center the conductor in jaws. Otherwise,
±1.0% additional error in reading will be produced.
After DC current (especially large current) measurement, the open circuit base
may be too large. Please do an AC current test to eliminate the residual magnetic
signal generated by the jaws.
UT205E/UT206B/UT207B/UT208B User Manual UT205E/UT206B/UT207B/UT208B User Manual
1) Turn the function dial to A~, , or position.
2) Press the trigger to open clamp jaws and fully enclose one conductor (only
one conductor can be measured at a time). For optimum results, center the
conductor in the jaws.
Current Frequency Measurement
1) When the function dial is in the AC current position, short press the Hz or Hz/
INRUSH button to enter the frequency measurement mode.
2) Short press the Hz or Hz/INRUSH button again to exit the frequency
measurement mode.
Inrush Current Measurement (for AC current)
1) User has the option to select proper range with RANGE button first, or simply
long press the Hz/INRUSH button to enter the inrush current measurement
mode.
2) Start the device under test and measure the instantaneous inrush current of
the device.
4) Long press the Hz/INRUSH button again to exit the inrush current measurement
mode.
Inrush current is the highest AC current (true RMS) within 100ms of start time,
as shown below.
The current measurement should be taken within 0°C~40°C. Do not suddenly
release the trigger, as the impact may change the reading for a short time.
To ensure measurement accuracy, center the conductor within the jaws.
Otherwise, ±1.0% additional error in reading may be produced.
When testing high current, the clamp will vibrate slightly, which is a normal
phenomenon.
1) Turn the function dial to the or position.
2) Short press the SELECT button to switch to DC current measurement. If the
display on the LCD is not zero, short press the REL ZERO button to enable
zero clearing.
3) Press the trigger to open the clamp jaws, and fully enclose one conductor
(only one conductor can be measured at a time). For optimum results, center
the conductor within the jaws.