Vigilantplant TDLS8000, User Manual

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<6. Configuration>
6-9
IM 11Y01D01-01EN
Laser unit (LU)
Flow cell
Sensor control unit (SCU)
Process gas 1
(Stream1)
Process gas 2
(Stream2)
Process gas 3
(Stream3)
Valve-2
(SV-2)
Valve-1
(SV-1)
Purge gas Purge gas
Figure 6.1 Piping diagram for switching streams
6.8.2 Valve Usage Setting
Set the valve usage purpose for automatically controlling the valves according to the SV terminal.
“3 Streams Switching,” “2 Streams & Cal Val),” and “Cal/Val” can be selected.
If “3 Streams Switching” is selected, three process gases can be switched and measured in
order. In the case of 2 stream switching, a calibration gas or check gas can be connected to the
remaining stream (stream 3) so that it can be used for calibration or validation.
Setup menu path to Valve usage:
[HART] “Detailed setup>>I/O condition>>Valve control>>Set valve usage”
[YH8000] “Configuration>>I/O>>Valve Control>>Valve Usage”
NOTE
The stream switching and automatic calibration and validation items that can be executed
according to the TDLS8000 valve control output (SV terminal) are limited depending on the
“Valve usage” setting.
• Cal/Val Usage
Stream switching cannot be used because all streams are used for automatic calibration
and validation. When calibration and validation are not executed, the stream is fixed to
stream 1.
To switch the process gas, do it manually.
• 2 Streams & Cal/Val Usage
Sets only stream 3 to be used for automatic calibration and validation. The following
automatic calibration and validation cannot be executed because they would use stream 2.
Calibration and validation can only be executed manually.
• Zero calibration
• Offline validation 1
• Online validation 1
• 3 Streams Switching Usage
All streams are set to be used for stream switching. None of the automatic calibration or
validation can be executed. Calibration and validation can only be executed manually.
3rd Edition: Jun. 10, 2016-00