Yokogawa In-Situ Gas Analyzer TDLS200 - Manual (Page 118)

8-18
IM 11Y01B01-01E-A 6th Edition :Feb 13, 2013-00
<8. VALIDATION AND CALIBRATION>
8.5 Performing Manual OnLine Validation
This will require the appropriate valves, tubes and tubes fittings such that the integral on-line check gas flow cell
can be purged with either normal purge gas (typically Nitrogen) or the check gas (instrument air is acceptable for
Oxygen analyzers in most applications). The flow path shall be as below:
vent
Online-Check Gas
Flow Cell Inlet
Max 3 psig
TYP <2LTS/min Analyzer Purge
N
2
Gas Inlet
TYP <2LTS/min
NO NC
C
Via the user interface (laptop PC and VNC Viewer or installed 6.5” Display and Keypad) follow this sequence:
Enter into the Advanced Menu, Calibrate & Validate
section. Enter On-Line Validations then Manual
Validation
Ensure the check gas is ready to start purging the
integral on-line check gas flow cell BUT DO NOT
start the flow yet. The standard purge gas (typically
Nitrogen) should still be flowing through this cell at this
time.
Press ENT and then switch to flowing the check gas
through the cell
Figure 62 - Manual On-Line Validation (manual valve actuation)