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 cali-
bration procedure.
The
Internal
calibration
menu is part of the
Advanced
Features Menu
.
1. Press the Right arrow
and
Menu button simultaneously
or
hold the
Menu button for approximately 3 seconds to access the
Advanced
Features Menu
of the meter.
2. Press
the
Up
arrow button to scroll to the
Internal calibration
menu
and press
Enter/Ack
.
3. 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.
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