Servomex SERVOTOUGH Oxy, Руководство оператора

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01910001B_8 © Servomex Group Limited. 2020
53
Parameter Values/options
Range
The selected op�on determines the mA output range associated with a
measurement:
• Range 1
The ou
tput is set to use range 1.
•
Range 2
The output is set to use
range 2.
•
Auto
The output will automa�cally switch between Range 1 and Range 2
depending on sample measurements.
Range 1 low level The Range 1 lowest sample measurement.
Range 1 high level
T
he Range 1 highest sample measurement (span).
Range 2 low level The Range 2 lowest sample measurement.
Range 2 high level The Range 2 highest sample measurement (span).
During calibra�on
The selected op�on determines how the mA output will ope
rate du
ring
calibra�on:
•
Freeze
As soon as the calibra�on screen is displayed, the milliamp output will
‘freeze’ at its last output value. The output will only be updated
to
reflect subsequent measurements when the calibra�on screen has been
exited.
• Follow
The
milliamp output value will reflect the measurement value, even
during calibra�on.
Jam condi�on
The selected op�on determines how the mA output will operate during
a fault condi�on:
• High
The output value will be held at 21.5 mA.
• Low*
The output v
alue will be held at 0 mA.
•
None
The output values will con�nue to be derived from the sample gas
measurements, even though these output values may be erroneous.
mA output range
0-
20 mA or 4
-
20 mA. *
Under range Any value below 4 mA. #
Range change po
int
The range chang
e point.†
Hysteresis The range change hysteresis.†
†
Only available when Auto range is selected.
* Default se�ng. Fail safe opera�on.