Auto power-off:
Power turns off automatically
after five minutes. [A.OFF] is
displayed whenever this feature
is disabled.
Power source:
9 V, 6F22Y manganese battery.
Battery life:
In excess of 30 hours.
Size:
4 7/8" (123mm) (L) × 2 7/8"
(73mm) (W) × 1" (25mm)(D)
Weight:
6 oz. (170g)
Case material:
Conductive resin (ABS)
Operation
The
19430
has four push buttons. The buttons operate
by pressing once lightly. There is no need to press the
button repeatedly. Its effective life may be decreased by
repeated misuse.
The POWER button turns the fieldmeter on and off. If
the
19430
is left on for 5 minutes, it will automatically
turn itself off. To resume operations, press the red
POWER button once. To disable the AutoOff feature and
allow continuous operation, press the red Power button
and hold down for at least 3 seconds when turning the
fieldmeter on.
The HOLD button holds the display of a measured
charge. HOLD mode turns off the focusing LEDs. No
measurements are possible when in the HOLD mode.
The hold measurement feature enables the user to use
the meter in inaccessible areas. When the HOLD
button is pressed once during a measurement, the
digital numerical value and the bar graph will be held on
the display. This function allows the operator to move
the meter where it can be more easily read. The HOLD
mode is displayed above the battery capacity display.
To cancel HOLD mode and resume measurement,
press HOLD once more.
The IB button and prepares the fieldmeter for Ion
Balance measurement. Refer to Section 6 for details.
The ZERO button sets the meter to a zero charge.
When the digital meter is turned on, the zero adjustment
is inoperative if it is in HOLD mode or
the meter reads more than ± 0.20.
NOTE:
For reliable measurement, the fieldmeter must
be grounded properly using the ground lead provided.
The plastic case of the
19430
Electrostatic Fieldmeter
is made of conductive resin. The grounding terminal
provides the reference potential for the electrical
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circuit. This terminal must be grounded properly for
accurate measurement.
1. Turn the focusing LED and sensor toward an un
charged area.
2. Press the POWER button. A single beep for one
second indicates proper operation. The battery
capacity indicator and bar graph will be displayed.
3. The meter reading should be zero (0). Use the ZERO
button if it is not.
4. Hold the fieldmeter 1" away from the charged
surface. Two beams of light will form concentric
circles when the meter is the correct distance, 1"
away, from the surface. The measurement
accuracy is dependent on a stable ground reference
and the 1 inch measuring distance. It is also
dependent on the “aspect ratio”, relating the size of
the object to be measured to the measurement
distance. This aspect ratio should be at least 3 for
best accuracy, i.e. the object should be at least a
3 in square when measuring at a 1 in distance.
Accurate measurements may be made at other
measurement distances by scaling the meter range
and observing the proper aspect ratio. For example,
at a measurement distance of 3 inches, multiply the
meter reading by 3 to give a range of 0 to 60 kilovolts.
For accuracy, the object being measured at this
distance should be at least a 9 inch square.”
5. A bar graph and a digital display on the
19430
displays the voltage of the charge. Press HOLD if you
want to hold the display of the measured charge.
6. To turn off meter: Press POWER if you have not
used the HOLD mode.
If you have pressed HOLD and
wish to retain the
meter reading for the next use,
press the POWER button to
turn off the
19430
.
If you have pressed HOLD and
do not wish to retain the meter
reading for next use, press
HOLD then POWER.
If the
19430
is left on for five minutes, the unit will beep
five times then turn itself off automatically. To disable
this feature, simply press and hold the red power button
for at least three seconds when turning the
19430
on.
Three beeps and the A-OFF display indicates that the
feature has been disabled.
Figure 3.
