Monroe Electronics Electrostatic Fieldmeter - Hand Held - Intrinsically Safe - model 282IS - Manual (Page 3)

Operation
1. Turn the instrument on. Press and release the ON/ZERO button. The display appears and
the range finder LEDs begin to flash alternately.
2. Discharge the instrument. Grounding (discharging) your body discharges the instrument
through its conductive case. If you are not wearing a grounded wrist strap, discharge your
body by touching a grounded metal object such as water pipe, conduit or workbench. As an
alternative, place a grounded wrist strap around the instrument itself.
3. Zero the instrument. Point the sensor plate away from any charged object, press and hold
the ON/ZERO button until reading stabilizes then release. As an alternative, point it toward,
but do not touch, a known grounded surface such as the palm of your hand.
CAUTION
If you bring the instrument (or any grounded object) too close to a charged surface, an
electrical arc may be created. To avoid this and take readings safely, check the
voltage/distance ranges given in Specifications. Always bring the instrument toward a target
surface from a distance of several inches. As the distance closes, watch the display to be
sure that the proper distance is maintained for each voltage range.
4. Take a reading. For voltages less than 20 kV, move the sensor plate of the instrument
toward the target surface. When the instrument is exactly the correct distance (1 inch) from
the target, the image projected by the range finder LEDs appears as a stationary circle. To
read voltages of 20 kV and higher use the distances and multiplying factors given under
"Range" in Specifications.
5. Hold a reading. Press and release the HOLD/OFF button. The present reading is displayed
along with the word "HOLD." To conserve battery life the LEDs go off while the reading is
held. To take another measurement press and release the HOLD/OFF button again.
6. Turn the instrument off. Press the HOLD/OFF button for more than 3 seconds.
Getting the most out of your Model 282 I S
The shell of the front-panel output jack can be used to provide a "hard" ground connection.
However, the instrument case is sufficiently conductive to provide a good ground path via the
user or a ground strap that is wrapped around the case.
CAUTION: If you bring the instrument (or any grounded object) too close to a charged surface,
an electrical arc may occur. To avoid this and take readings safely, check the voltage/distance
ranges given in Specifications. Always bring the instrument toward a target surface from a
distance of several inches. As the distance closes, watch the display to be sure that the proper
distance is maintained for each voltage range.
Calibration
Monroe Electronics instruments are factory-calibrated prior to shipment. Recalibration should be
performed annually, or more frequently if specified by contract or company policy. Your
instrument should also be recalibrated any time it has been repaired or tampered with. We are
happy to recalibrate your instrument for you at a reasonable cost, or provide information and
procedures on calibration upon request. We also offer calibration services with traceability to
NIST, MIL-STD-45662A or ISO 17025 compliant.