Beha Amprobe ACD-50NAV Digital-Multimeter, DMM, 3729945 数据表

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Step1. Set the rotary switch to the “W” position.
Step2. Connect the Red test lead to the Line conductor, and the Black 
test lead to the Neutral conductor.
Step3. Press the trigger to open the transformer jaws and clamp one 
conductor only, make sure that the jaw is firmly closed around the 
conductor.
Step4. Using the Navigator key to choose the “W/PF” mode.

Note : 

•  The “ + ” symbol on the jaw must face on the power source side.
•  In AutoSense mode, the meter will displays ACW/DCW depends on if 

there is AC frequency detected.

•  ACD-50NAV, ACD-51NAV and ACD-53NAV offer AC power 

measurement mode only.

Active power sign :
No sign : Indicates the power flows from the power source to the load.
“_” sign : Indicates the power flows from the load to the power source.

Power factor sign :
No sign : The phase of the current signal is lagging behind the voltage 
signal (inductive load).
“_” sign : The phase of the current signal is leading the voltage signal 
(capacitive load).

Overrange display :
OL.U : Voltage overload
OL.A : Current overload
OL.UA : Both Voltage and current overload.
± OL kW : Active Power > 1000 kW or < -1000 kW.