121
•
If for some reason the calibration
cannot be done automatically (be-
cause the input signal is measured,
not generated/simulated), you will
have to change the input signal
manually. The slower you raise the
input signal the more accurate the
observed actuation point is. Be
equally careful when decreasing the
input signal in order to get the
deactuation point.
4. Save or reject the results as is de-
scribed in chapter
A Calibration Pro-
cedure Using MC5P
on page 110.
5. Either do another calibration run or re-
turn to the Instrument window.
Notes.
Selecting Calibration Method
Manual
when the input signal is gen-
erated/simulated with MC5P means that each pair of actuation/
deactuation points have to be accepted manually.
If the prescan stops and displays an error message, try widening
the scan range. It is also advisable to have the scan range sym-
metrical in relation to the actuation/deactuation points.
Hint!
This procedure also suits other types of switches. How to calibrate
other types of switches may be adapted by combining the informa-
tion of this example with the input signal information from one of the
following examples:
•
Pressure switches.
See the example
Pressure Transmit-
ters
on page 114.
•
Temperature switches with a fixed sensor.
See the example
Temperature Sensors
on page 116.
•
Temperature switches with a detachable sensor.
See the
example
Temperature Indicators and Recorders
on page
118.
Next…
MC5P’s Support for Instrument Adjustment
on page 123.
Calibrating an Instrument
Summary of Contents for MC5P
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