Ametek DDMC Instruction Manual page 25

DDMC Analog Input Process Meter / Controller
Error Message (Error)
An error message indicates that the calibration or
scaling process was not successful.
After the error message is displayed, the meter
reverts to the input prior to the failure 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.
4. Input 1 signal inadvertently applied to calibrate
input 2*.
*Not relevant when scaling the meter.
For instructions on how to program numeric values
see Setting Numeric Values, page 22.
Minimum Input Span
The minimum input span is the minimum difference
between input 1 and input 2 signals required to complete
the calibration or scaling of the meter.
Input Range Input 1 & Input 2 Span
4-20 mA 0.15 mA
0.10 VDC
±10 VDC
Calibrating the Meter with External
Source (Cal)
Note: To scale the meter without a signal source
refer to Scaling the Meter (SCALE) on page 24.
The meter can be calibrated to display the process
variable in engineering units by applying the
appropriate input signal and following the calibration
procedure.
The use of a calibrated signal source is strongly
recommended to calibrate the meter.
Warm up the meter for at least 15 minutes before
performing calibration to ensure specified
accuracy.
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Instruction Manual