Emerson X-STREAM Series Instruction Manual page 80

Non-incendive (ex na nc) configuration for zone 2 and division 2 installations gas analyzer
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X-STREAM Non-Incendive
Signal:
OutRange:
Low Scale:
Max Scale:
AutoScale:
FailMode:
0/4 mA:
20 mA:
Hold:
3-24
3.9 Checking the Settings
Comp1
0-20 mA
A A
0.00
100.00
Yes
Live
0.00
100.00
No
"0/4 mA" and „20 mA" enable to fi netune the
analog output to compensate possible devia-
tions based on electronics tolerances:
Set "Signal" to 0 mA or 20 mA
measure the output current,
adjust it to the expected value.
Accepted range: -10,000 ... +10,000
"Hold" selects the output´s behaviour during
calibrations.
If set to Yes,
• the analog output is fi xed to the last measu-
red value;
• concentration alarms, which may otherwise
be triggered by the concentrations of the
calibration gases, are supressed.
If set to No,
• the analog output signal always corre-
sponds to the actual measured value during
calibration; this may trigger alarms if limits
are exceeded.
Note!
This behaviour may be undesireable if e.g.
the unit is connected to a data acquisition
system.
Emerson Process Management GmbH & Co. OHG
Instruction Manual
HASXENE-IM-EX
12/2014

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