Vigilantplant TDLS8000, User Manual

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<9. Inspection and Maintenance>
9-22
IM 11Y01D01-01EN
Laser unit (LU)
Flow cell
Sensor control unit (SCU)
Purge gas Purge gas
Process gas
(Stream1)
Online Validation 1
(Stream2)
Online Validation 2
(Stream3)
Valve-2
(SV-2)
Valve-1
(SV-1)
In this piping arrangement, automatic offline validation 1 and 2 can be executed consecutively.
There are two methods to start a consecutive execution. One is by using HART, YH8000,
Modbus, or digital input (semi-automatic execution), and the other is to start at a specified
time (automatic execution). For details on automatic and semi-automatic execution, see “9.8
Automatic and Semi-automatic Execution of Validation and Calibration”.
For details on consecutive execution, see “9.8.5 Consecutive Automatic Execution”.
l
Offline validation check gas and two types of process gas
Offline validation check gas is connected. The remaining stream is used to switch between two
process gases.
Laser unit (LU)
Flow cell
Sensor control unit (SCU)
Purge gas Purge gas
Process gas 1
(Stream1)
Process gas 2
(Stream2)
Online Validation
(Stream3)
Valve-2
(SV-2)
Valve-1
(SV-1)
If you want to switch the check gas stream through automatic valve control using the TDLS8000
SV terminal, you need to set the TDLS8000 valve usage according to the piping method as
shown in the following table. Note that only online validation 2 can be executed. For details on
valve usage, see “6.8.2 Valve Usage Setting”.
Piping Valve usage setting
Offline validation exclusive Cal/Val
Offline validation 2 check gas and two
types of process gas
2 Streams & Cal/Val
3rd Edition: Jun. 10, 2016-00