PRECISION DIGITAL PD6210-6H2, Instruction Manual

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PD6210 Analog Input Batch Controller Instruction Manual
49
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.
The graphic above shows the calibration of the current
input. The voltage input is calibrated in a similar way.
Tips:
• Low and high input signals can be any valid value within the
range of the controller.
•
Observe minimum input span requirements between input 1 and input 2.
•
Low input should be less than high input signal.
Error Message (
Error
)
An error message indicates that the calibration or scaling process was not successful.
After the error message is displayed, the controller reverts to input 2 during calibration or scaling and to
input 1 during internal calibration, allowing the appropriate input signal to be applied or programmed.
The error message might be caused by any of the following conditions:
1. Input signal is not connected to the proper terminals, or it is connected backwards.
2. Wrong signal selection in
Setup
menu.
3. Minimum input span requirements not maintained.
Minimum Input Span
The minimum input span is the minimum difference between
input 1 and 2 signals required to complete the calibration or
scaling of the controller.
Input range Input 1 & input 2 span
4-20 mA 0.15 mA

10 VDC 0.01 VDC