Galvanic Applied Sciences 943-TGX, Operation Manual

Page: 32 / 110

Revision 4 32 August 02, 2019
4.3 The Analysis 1 Tab
The Analysis 1 tab (Figure 4-1) presents a summary of the present status of the system
4.3.1 Online/Offline Button
Clicking the Online / Off Line button changes the status from On Line (green) to Off Line (red)
and vice-versa. When the analyzer is changed to Off Line, the relay indication for Control is
forced to the Manual state (amber).
The state of the On Line / Off Line button does not affect the operation of the analyzer. The
ability to remotely signal plant operations using the relay output of the Control (in conjunction
with the On Line / Off Line button) has been incorporated as a convenience to the user. The
On Line / Off Line function essentially provides a method of signaling that the analyzer data is
invalid (undergoing maintenance or servicing).
When returning the analyzer to On Line status, the relay indication for Control will return to
the Auto state only if no fault or calibration conditions exist.
The plot displays the air demand as a function of time. The range for the x and y axes can be
edited as described in Section 4.8.
4.3.2 Air Demand, H
2
S, SO
2,
COS and S
vap
Fields
The Air Demand, H
2
S, SO
2,
COS and S
vap
fields indicate the present values of these
parameters and cannot be edited. The analyzer physical scaling is optimized for the
measurement of the typical on-ratio concentrations of H
2
S, SO
2
, and COS. Sulfur vapor
(S
vap
) is monitored to indicate when there may be a problem with the cooling finger in the
probe.