3B Scientific Charge Indicator - Manual

3B SCIENTIFIC ® PHYSICS
1
Charge Indicator 1009962
Instruction Sheet
02/13 ALF
1 On/off switch
2 Contact plate
3 Negative charge display (blue)
4 Positive charge display (red)
5 Rear contact plate (back of hous-
ing)
1. Description
The charge indicator is designed to detect elec-
tric charge and indicate its sign by means of a
blue or red LED When a charged object is
brought into close proximity or into contact with
it.
2. Equipment supplied
1 Charge indicator
2 Batteries
3. Technical Data
Dimensions: 62x67x20 mm 3 approx.
Weight: 85 g approx.
Battery: AA 1.5 V (2x)
4. Operation
4.1 Determining the sign of a charge
• Turn on the charge indicator by setting the
switch to ON.
• Bring a charged object into close proximity
or into contact with the contact plate.
If the charge is negative, the blue LED will light
up and if it is positive the red one will.
• To discharge the charge indicator, make
contact between the contact plates on the
front and back.
• Turn off the charge indicator after use by
setting the switch to OFF.
4.2 Changing the battery
4.2.1 General information
• From time to time, check the state of the
battery.