Instruction Manual

Trident Model PD765 Universal Input Meter Instruction Manual
59
Internal Calibration (ICal)
• There is no need to recalibrate the meter
when first received from the factory.
• The meter is factory calibrated prior to
shipment, for all input types, in milliamps,
volts, and degrees respectively. The cali-
bration equipment is certified to NIST
standards.
The internal calibration allows the user to scale the meter without apply-
ing a signal. This menu is not available if the meter is set up for TC or
RTD inputs.
The use of calibrated signal sources is necessary to perform the internal
calibration of the meter.
Check calibration of the meter at least every 12 months. Each input type
must be recalibrated separately, if meter will be used with all input
types.
Notes:
• If meter is in operation and it is intended to
accept only one input type (e.g. 4-20 mA),
recalibration of other inputs is not necessary.
• Allow the meter to warm up for at least
15 minutes before performing the internal cal-
ibration procedure.
The Internal calibration menu is part of the Advanced features menu.
1. Press the Right arrow and Menu button simultaneously to access
the Advanced features of the meter.
2. Hold the Menu button for approximately 3 seconds to access the
Advanced features of the meter.
3.
4. Press the Up arrow button to scroll to the Internal calibration menu
and press Enter/Ack.
5. The meter displays either current (Curr) or voltage (volt), accord-
ing to the meter input setup. Press Enter/Ack to start the calibra-
tion process.