11
12
1. AC current measurement (Fig. 4)
1) Set the rotary switch to “A~/V~”, press SELECT to select AC current measurement. Press
the trigger to clamp the measured conductor and then release the trigger slowly until the
clamp jaws closes completely. Make sure that the measured conductor centers at the clamp
jaws, error will be produced if the measured conductor does not centers at the clamp jaws.
The clamp can only measure a current conductor at a time, if it measures two or more
current conductors at the same time, the reading will be incorrect.
2) Read from the LCD the True RMS, peak and frequency of AC current, as shown below:
Note:
Do not release the trigger abruptly when pressing and holding it. Hall sensor is sensitive to
magnet, heat and mechanic stress, impact can cause reading variation in a short time.
To ensure measurement accuracy, please place the measured conductor at the center of the
clamp jaws. Error of ±1.0% of reading will be produced if the measured conductor is not
placed at the center of the clamp jaws.
2. AC voltage measurement (Fig. 5)
Power supply
AC current measurement
Load
L
/
R
/
A
N
L
/
R
/
A
N
Red
Power supply
Black
Load
AC voltage measurement
Fig. 4
Fig. 5
UT219P User Manual
UT219P User Manual
1) Connect red test lead (connected with red alligator clip already) with “V” terminal; and black
(connected with black alligator clip already) with “COM”.
2) Set the rotary switch to “A~/V~”, press SELECT to select AC voltage measurement, and
connect the alligator clips with power source or load to be measured in parallel.
3) Read from the LCD the True RMS, peak and frequency of AC voltage, as shown below:
Note:
Do not input voltage over 1000Vrms. It is possible to measure higher voltage, but it may
damage the clamp.
Avoid electric shock when working with high voltage.
Disconnect test leads with the measured circuit after all measurement operations are
completed.
The high voltage warning symbol “ ” will appear on the LCD if the measured voltage is
over 30V AC; the red backlight flashes if the measured voltage is over 1000VAC.
3. W/VA/var (Fig. 6 & Fig. 7)
L
/
R
/
A
N
L1
L2
N
Red
Black
Power supply
AC single-phase power measurement (1P2W)
Load
Power supply
AC single-phase power measurement (1P3W)
Load
Red
Red
Black
Black
1) Connect red test lead (connected with red alligator clip already) with “V” terminal; and black
(connected with black alligator clip already) with “COM”.
2) Set the rotary switch to “W/VA/Var”, connect alligator clips with power source and load to be
measured, and clamp the conductor to be measured, the current flows from up to down (up:
front; down: bottom cover), then release the trigger slowly until the clamp jaws close completely.
Please make sure that the measured conductor centers at the clamp jaws, error will be produced
Fig. 6
Fig. 7
