Important information
NOTE INSTRUMENT AIR QUALITY
The quality requirement for instrument air used exclusively as ejector air is lower than
for usage as zero/control air (zero gas quality).
Procedure
Connection of shared instrument air supply
1. Connect instrument air with zero gas quality on inlet 1.
2. Set manual valve to position “open”.
Connection of separate instrument air supply
1. Connect instrument air supply with zero gas quality on inlet 1.
2. Connect instrument air supply for ejector on inlet 2.
3. Set manual valve to position “closed”.
Related topics
•
Requirements for instrument air quality: see "Gas supply", page 65
5.4.8 Connecting the valve block
Overview
The following are located on the valve block
•
Gas connections of the gas sampling unit hose bundle line
1
Inlet: Zero gas
2
Outlet: Zero gas measuring point 1
3
Outlet: Zero gas measuring point 2 (option)
4
Outlet: Control air measuring point 1
5
Outlet: Backflush air measuring point 1
6
Outlet: Control air measuring point 2 (option)
5 MOUNTING
28
O P E R A T I N G I N S T R U C T I O N S | MCS200HW 8021889/1D1T/V3-1/2021-09 | SICK
Subject to change without notice
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