TB-3090
Page 5 of 8
Zeroing the Digital Static Field Meter
Slide the power switch to the right to power the Digital
Static Field Meter. Make contact between the top of
the Conductive Plate and a grounded surface. Turn the
rotary zero knob until the Digital Static Field Meter’s
display reads 0.00.
Performing a Measurement
Locate the Test Kit in an ionized environment at the
appropriate distance from the device under test. The
static field displayed is the actual balance of the ionizer
or voltage offset. The display will indicate “1” or “-1”
when the Digital Static Field Meter is over-ranged.
Change the range of the unit if necessary.
NOTE: When testing pulsed ionizer systems, the voltage
displayed is constantly changing. This pulse rate may
be faster than the display update rate of the Digital
Static Field Meter, therefore the displayed voltage is an
average of the actual voltage. The output of the Digital
Static Field Meter is useful in this situation for more
accurate measurements.
Holding the Last Reading
Press the red pushbutton switch into the HOLD position.
This will freeze the measurement on the display and
illuminate the red LED located above the pushbutton
switch. This feature allows the operator to move the
Digital Static Field Meter where it may be more easily
read or saved for later reference.
Performing Discharge Time Measurements
In order to verify that an ionizer is operating properly it is
also important that its ability to neutralize or discharge
static electricity is measured. The following procedure
will measure an ionizer’s discharge time:
Operating the Charger
The Charger has a momentary rocker switch that powers
the unit. Holding the switch forward / backward supplies
power to the output terminals.
Polarity Selection
The top of the rocker switch is labeled “+”, and the
bottom is labeled “-”. To provide a POSITIVE voltage
output, touch the plate located underneath the charger,
and press the switch forward at the same time. To
provide a NEGATIVE voltage output, touch the plate
located underneath the charger, and press the switch
downward at the same time.
NOTE: For the Charger to work correctly, the operator
and Digital Static Field Meter must be properly
grounded. A ground path to the touch plate must exist.
Ionizer Discharge Time
Use the Digital Static Field Meter with the Conductive
Plate in the appropriate location for measurements.
Figure 8. Sliding the Conductive Plate onto the Digital
Static Field Meter
Figure 9. Using the Digital Static Field Meter with
Conductive Plate to measure the offset voltage of a
benchtop ionizer
Test Equipment Depot - 800.517.8431 -
5 Commonwealth Ave,
Woburn,
MA 01801
