4-60 | Model 931S / Model 932S UV Analyzers
2 = Modbus (switching can be performed
via a Distributed Control System or
Programmable Logic Controller via
Modbus protocol). When this function
is selected, Stream Selection is en-
abled; choose the appropriate option.
The Switching Interval (sec) must be
set to ‘0’.
Stream Selection This function can be controlled by Modbus
communication. Options include:
-1 = none
0 = stream A
1 = stream B
Select ‘0’ (stream A) or ‘1’ (stream B) to en-
able Switching Interval.
Switching Interval (sec) The time (3–1200 seconds) between stream
switches. For single streams, set this func-
tion to ‘0’.
Flow Operation
Allows you to configure each Solenoid (Z, B, A). Assignment indi-
cates which analyzer Flow Control mode is enabled for each calibra-
tion parameter.
ZeroCAL Combination of solenoids activated during
Zero gas flow.
Span1CAL Combination of solenoids activated during
Span1 gas flow.
Span2CAL Combination of solenoids activated dur-
ing Span2 gas flow (Model 932S Analyzers
only).
Sample Stream A Combination of solenoids activated when
stream A is selected from the Stream
Selection list.
Sample Stream B Combination of solenoids activated when
stream B is selected from the Stream
Selection list.
Assignment This is a code representing the solenoid
combination.
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