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 inch square when measuring at a 1 inch 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.
Results
A display of [+] or [-] next to the digital numeric value
represents the polarity of the static charge being
measured. In addition, the color of the bars in the bar
graph indicates the polarity of the static charge. Red
and blue bars indicate positive and negative charges
respectively.
During a static charge measurement, if the digital
display starts flashing along with a continuous beep,
stop taking the measurement. The static charge is
greater than the meter can measure. Attempts to
measure too high a charge may damage the sensor.
© 2010 DESCO INDUSTRIES INC.
Employee Owned
TB-3048
Page 2 of 5
DESCO WEST
- 3651 Walnut Avenue, Chino, CA 91710 • (909) 627-8178 • Fax (909) 627-7449
DESCO EAST
- One Colgate Way, Canton, MA 02021-1407 • (781) 821-8370 • Fax (781) 575-0172 • Web Site:
Operation For Ion Balance (Offset Voltage)
Measurement
NOTE:
The Digital Static Locator Ion Balance
measurement feature should not be used to measure
the ion balance of static bars. It may be used to mea
-
sure other ionizers for ion balance (offset voltage).
1. Depress the plate assembly release button on either
side of the fieldmeter to remove the charge plate
assembly.
2. Insert the plate assembly into the other end of the
fieldmeter (the end with the Desco logo) until it
clicks into place.
NOTE:
Ion Balance plate assembly must not move
during measurement.
3. The conductive case must be grounded using the
supplied ground cord. It is imperative for accurate
ion balance and to drain any charge that has
developed prior to measurement.
4. To turn on the ion balance measuring circuit, press
the blue IB button.
5. Turn sensor toward an uncharged area.
6. The meter reading should be zero (0). Press the
Zero button if it is not.
7. Hold the fieldmeter centered in front of the ionizer at
any convenient, repeatable distance, such as 1 foot.
8. A bar graph and a digital display on the
19430
displays the ion balance information. Press HOLD if
you want to hold the display of the measured
charge.
9. To turn off the 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.
10. Depress the charge plate
assembly release buttons
on either side of the fieldmeter to remove the charge
plate
assembly
. Store the plate on the opposite end,
pressing it until it clicks into place.
Figure 3.
