IMPORTANT: The SL3 is built in a conductive case that provides the ground
reference for the measuring circuit. For accurate measurements and zeroing,
ensure that the person holding the meter is grounded or discharged by touching
ground, or that the meter is grounded using the ground snap on the rear of the
case.
5. Take a reading: Place the meter 1 inch from the object to be measured. The
distance is measured from the stainless steel front panel to the surface of the
object. The meter now displays a reading of the electrostatic field in kilovolts
per inch. Note: in the SAMPLE position the RANGE LIGHTS are on. The
RANGING LIGHTS are provided to help you place the meter at the correct
distance from an object. The lights are factory adjusted to produce a
concentric ring bulls-eye pattern on a flat, opaque surface 1 inch from the
front edge of the meter. This can most easily be seen by aiming the meter at a
sheet of white paper.
6. Hold a reading: With the meter in position 1 inch from the object being
measured, press the push-button so that it latches in the lower or HOLD
position. This freezes the reading on the display and allows the meter to be
moved to a position where it can be more easily read or saved for later
reference. When the meter is in the HOLD position, the word HOLD will
appear in the display. NOTE: In the HOLD position, the RANGING LIGHTS
are off. When the push-button is returned to the SAMPLE position, the
RANGING LIGHTS goes on and the word HOLD disappears from the
display.
7. Battery Replacement: To change the battery, slide open the battery
compartment door on the back of the meter and remove the battery from the
battery clip. Replace the battery with a fresh one and replace the battery
compartment door. If the meter is to be stored for an extended period of time,
disconnect and remove the battery.
8. Measurements accuracy: The accuracy of measurement is dependent on a
stable ground reference and the 1 inch measuring distance as previously noted.
It is also dependent on the aspect ratio, relating the size of the object to be
measured to the measurement distance. This ratio should be at least three for
best accuracy, ie the object should be at least a 3 inch sq when measuring at a
1 inch distance. **Accurate measurements may be made at other
measurements distances by scaling the meter range and observing the proper
aspect ratio. For example at a measurement distance of thee inches, multiply
the meter reading by 3 to give a range of 0 to 59.97 kilovolts. For accuracy,
the object being measured at this distance should be at least a 9 inch sq.
