Galvanic Applied Sciences 962-AGX, Руководство по эксплуатации

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Revision 1 20 9/10/2019
2.4.7 Connection of the Zero Gas Service
(Nitrogen)
A supply of oxygen free, high purity nitrogen (N
2
) in tank, complete with a two stage regulator
and shut-off valve is required.
The 962-AGX analyzer system is analyzing a stream containing a high H
2
S
concentration. Oxygen (O
2
) can NOT be used as a zero gas and Nitrogen
(N
2
) should be used.
Connect the N
2
supply to the analyzer, system at the 1/4" tube fitting labeled ‘Zero Gas Inlet’
using 1/4" 316 stainless steel tubing as shown in figure 2-1.
Leave the main valve of N
2
tank closed as the complete N
2
zero gas system will be pressure
leak checked at the time of analyzer commissioning.
2.4.8 Connection of Loss of Purge Signal
There is a pressure switch to indicate loss of sufficient control cabinet protective purge air
flow as shown in the Figure 2-1.
The user must connect the Loss of Purge Signal to a plant alarm system in
a constantly attended area in order to maintain a Class I, Division 2 area
approval of the analyzer.
Purging of the control cabinet is required in respect of the hazardous area classification and
to mitigate corrosive element exposure on the system electrical equipment. As soon as
practical, initiate cabinet purge until the analyzer is commissioned by Galvanic Applied
Sciences Inc.
The control cabinet purge flow control valve is located inside the purge control box mounted
on top of the analyzer. To open the purge control box use the supplied purge system access
key. As soon as system air is available, initiate a small purge air flow rate through the control
cabinet. Normal purge flow rates can not be adjusted until all conduit connections are
sealed, and the control cabinet door is latched closed.