5
The 3M
™
Static Sensor 718 is a precision electronic instrument. Improper use
or rough treatment can damage the unit, and render it incapable of providing
accurate measurements.2.2.4 Replace the cover. 2.3 The Static Sensor 718 has a
Low Battery indicator. Once the battery is depleted to approximately 6.5 volts,
the instrument will show BAT in the display. At this time, the Static Sensor 718
will not produce accurate results and the battery should be replaced.
3.1
Turning the unit ON and OFF: To turn on the Static Sensor 718,
momentarily press down on the membrane switch labeled POWER.
Determining that the power is on can be verified by seeing that the liquid
crystal display (LCD) is on, and that the red light-emitting diodes in the
front of the sensor are lit. To shut off the Static Sensor 718, momentarily
press down on the membrane switch labeled POWER. Determining that the
power is off can be verified by seeing that the liquid-crystal display (LCD) is
off.
3.2
Making Electrostatic Voltage
Measurements: hold the instrument
1-inch (2.54 cm) away from the object
being measured. The display will
update with the voltage measurement
in kilovolts. If the measured voltage is
greater than the measurement range of
the instrument, a -1. will be displayed.
At this time, switch to a greater range.
If over-ranging occurs even with the
high range activated, the static charge on
the object cannot be measured with the
Static Sensor 718.
3.3
Measurement Range: all measurements are in kilovolts (kV) as stated
on the front label of the unit. The Static Sensor 718 has two measurement
ranges: 0-1,990 kV and 0-19,900 kV. The unit’s current measurement
range mode can be verified by checking the display. Three digits following
the decimal point indicate that the unit is in 0-1,990 kV range. Two digits
following the decimal point indicate that the sensor is in 0-19,900 kV range.
To change between measurement ranges, press the RANGE/HOLD button
once, momentarily.
3.4
HOLD Function: in the event that the user wishes to freeze the current
measurement, the HOLD function of the Static Sensor 718 may be used.
Simply press the HOLD switch momentarily and the currently displayed
voltage will be frozen. A HOLD notice will also be displayed to alert the
user that the instrument is currently in HOLD status. To unfreeze the display
