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All interfacing connections are made at the rear of the unit. The following
outputs are available: The 3M
™
Charge Analyzer 711 can be connected to a y (t)-
recorder via the ± 2 volts analog output. Connection to a PC for data recording
purposes is available through a RS232 data port.
A 3M
™
Remote Field Sensor Probe 711RS is connected through a 4-Pin
circular socket located on the rear of the unit. The sensor operates on the same
measurement principle as described above. This feature allows to the user to
make measurements by means of a hand-held or fixed position probe in remote
locations, where it may be impossible to position the Charge Analyzer 711.
Measurement distances with the probe are 1, 2, 5, 10 and 20 centimeters. The
built-in microprocessor automatically converts the measured field strength via
the chosen distance into a charge of an equivalent potential in volts. The display
automatically switches from volts to kilovolts.
The following operating functions will be automatically activated, when the
appropriate electrode or sensor is connected to the base unit.
The Charge Analyzer 711 comprises of four types of independent operating
functions:
• Static fieldmeter sensor – Measuring electrostatic fields
• Voltmeter - Measuring the potential on charged objects
• Static decay time – Measuring charge-decay and balance of ionizing
equipment by charge plate monitor (CPM) method
• Remote Field Sensor Probe 711RS – Measuring the potential on charged
objects in confined areas.
Change between these operating functions will be verified on the display as
CHANGE MODE OF OPERATION.