Precision Digital PD6310 - Manual (Page 82)

Model PD6210 & PD6310 Batch Controllers Instruction Manual
82
PD6210 Only: Internal Source Calibration (ICAL)
Note: The PD6210 is factory calibrated prior to shipment to read in
milliamps and volts depending on the input selection. The calibration
equipment is certified to NIST standards.
The use of a calibrated signal source is necessary to calibrate the
internal source of the meter. The meter’s internal source is what allows
the user to scale the meter without applying a signal.
Check calibration of the controller at least every 12 months. Each input
type must be recalibrated separately.
Notes:
1. If controller is in operation and it is intended to accept only
one input type (e.g. 4-20 mA),
recalibration of other input is not necessary.
2. Allow the controller to warm up for at least 15 minutes
before performing the internal source calibration procedure.
The Internal calibration menu is part of the Advanced Features menu.
1. Press and hold the Menu button for three seconds to access the
advanced features of the controller.
2. Press the Up arrow button to scroll to the Internal calibration menu
(ICAL) and press Enter.
3. The controller displays either current calibration (C CAL) or voltage
calibration (v CAL), according to the input setup. Press Enter to start
the calibration process.
Example of Internal Calibration for current input:
4. The controller displays low input current message (C lo). Apply the
low input signal and press Enter. The display flashes for a moment
while the controller is accepting the low input signal.
5. After the display stops flashing, a number is displayed with the
leftmost digit brighter than the rest. The bright digit is the active digit
that can be changed by pressing the Up arrow button. Press the
Right arrow button to move to the next digit.
6. Set the display value to correspond to the input signal being
calibrated, typically 4.000 mA.
7. The display moves to the high input calibration (C Hi). Apply the
high input signal and press Enter.
8. Set the display for the high input calibration, in the same way as it
was set for the low input calibration, typically 20.000 mA.