electrical field measuring device / voltage
ACEF
Vnation JSC

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Measured value:
electrical field, voltage
This meter measures AC electric field in the vertical direction (same direction as the long axis of the meter). It has a wide frequency range (40 Hz - 20 KHz) and high accuracy (+/-2% of reading +/- 1 count) with an electric field strength range of 19 999 V/m and resolution of 1 V/m. The sensor is in the top 1/3 of the meter.
To operate, turn the meter on (slide switch is on right side). Point toward the electric field source and read the display, which is in units of volts per meter (equivalent RMS). This meter uses advanced AC detection circuitry, which is more accurate and faster reading, especially at high frequency and in weak field strength, than existing meters.