Recording Data; Recalling Data From Memory - Extech Instruments 382075 User Manual

Phase Sequence Indication (for Power Factor > 0.1)
In the 3φ balanced power mode the meter will automatically
detect the phase relationship between three individual
phases.
1. Set the rotary switch to the 3φ position.
2. Connect the voltage input (red terminal) to the 'R' (or
L1) phase, connect the COM input (black terminal) to
the 'S' (or L2) phase, and clamp on the T (or L3)
phase. When clamping onto the T (or L3) phase, the
power clamp must face the power source.
3. If the phase sequence is clockwise, R, S, T sequence
will flash on the display.
4. If the phase sequence is counterclockwise, T, S, R
sequence will flash.
5. If current is not detected, only one of the R, S or T phases will be represented on the LCD. See Fig.
14.
NOTE: The "+" sign printed on jaw must face the power source for correct measurement.

Recording Data

The power clamp can store 4 data points in memory. To store data displayed on the LCD, press the
REC button. If the power clamp already has 4 data points memorized, the LCD will display FULL.
The REC symbol will be displayed on the LCD if any data is currently stored in memory. To clear
the meter memory, power the meter down.

Recalling Data from Memory

To retrieve data from memory, press the READ button. NOTE: The rotary switch must not be set to
the 3φ function when reading memory data. Once the READ button is pressed, the reference
number of the data will be displayed first; the stored measurement data will then be displayed.
While in the READ mode, the REC. and No. symbols will be displayed on the LCD. To exit the
READ function, select another function using the rotary switch.
NOTE: If both the REC and the No. symbols are shown on LCD, the reading shown on the
LCD is the data stored in memory, not actual measurement data.
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L3
L2 L1
L3
L2 L1
FIGURE 14
L3
L1 L2