NRD USA
/ 2937 Alt Boulevard / PO Box 310 / Grand Island, NY 14072-0310
PHONE
716 773 7634 /
FAX
716 773 7744 /
sales@nrdllc.com /
WEB
www.nrdllc.com
NRD Asia Pte. Ltd
/ 114 Lavender Street #08‐90 CT Hub 2 Singapore 338729
PHONE
+65 6679 1707 /
sales@NRDasia.com /
WEB
www.nrdllc.com
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521AE_Manual_01/19
2. Operation
2-1. Battery Installation:
Open battery compartment door on the back
of the Fieldmeter.
Connect battery to the wire terminal.
Replace and close battery compartment door.
2-2. Power button
Press “POWER” button once. The unit will be
in static charge measurement mode or standard
mode.
2-3. LCD Display.
The upper left section displays a bar graph
in blue to indicate negative polarity
voltage.
The upper right section displays a bar
graph in red to indicate positive polarity
voltage.
The lower section displays reader friendly
numerical values, voltage unit, functions in
use, and battery condition.
Note:
If the voltage reading is blinking ±22.0
kV with a continuous warning sound,
the maximum voltage reading limit
has been exceeded.
If the voltage reading is Err, the
maximum voltage reading limit has
been continuously exceeded and the
sensor could be damaged.
2-4. Battery Condition Display.
The battery condition icon has 4 display stages.
Replace the battery when display shows the
battery to be empty.
The life of a 9V battery, is approximately 30
hours.
2-5. Fieldmeter sound notifications.
1 beep – turned on and standard mode
3 beeps – turned on without auto power off function.
5 beeps – auto power off notification.
1 long beep – over range notification.
2-6. Ground the Electrostatic Fieldmeter.
Plug ground wire into the ground wire jack in the
side of the fieldmeter.
Connect to an earth ground using the alligator
clip.
Note: for an accurate measurement, make sure the
fieldmeter is connected to ground.
2-7. Proper Distance from target.
The distance between the fieldmeter and the target
needs to be 1 inch (25.4mm). This is done by using the
LED’s. When the two red lights converge as one
concentric circle the fieldmeter is at the proper
distance.
Voltage
Battery
condition
Negative
polarity
Functions
in use
Units (kV / V)
Positive
polarity