Servomex 07931001B, Operator'S Manual

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07931001B revision 6 © Servomex Group Limited. 2020
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Parameter Function
Measurement Selects 1 of 4 measurements properties to assign
Hot Measurement Select the measurement to be reported above upper transition set point
Lower Transition
Lower set point temperature for a linear averaging transition switch between 2
measurement outputs
Upper Transition
Upper set point temperature for a linear averaging transition switch between 2
measurement outputs
Range 1 low level Range 1 lowest sample measurement
Range 1 high level Range 1 highest sample measurement
Range 2 low level Range 2 lowest sample measurement
Range 2 high level Range 2 highest sample measurement
During calibration
The option you select determines how the mA output operates during
calibration
Freeze the mA output freezes at its last output level as soon as the calibration
screen is displayed
The output only updates to reflect subsequent measurements when you exit
the calibration screen
Follow the mA output value, reflects the measurement value during calibration
mA Output range
0
–
20 mA
4
–
20 mA Default setting. Fail safe operation
Under range
Any value below 4 mA
This is only available if the 4 to 20 mA output range is selected. It sets the
lowest output current during normal operation and allows negative gas
concentrations to be monitored through the mA output
For example, with an under range setting of 3.8 mA, the mA output can be less than 4 mA (indicating a zero-
gas concentration), down to a minimum of 3.8 mA, where an output between 3.8 mA and 4 mA indicates a
negative gas concentration
Range change point
The range change-point
This is only available when auto range is selected
Hysteresis
The range change hysteresis
This is only available when auto range is selected