FLK Gas Sampling System - MPIP - Free

SQ253 Valve Combination
2.2.2 Cable connection to the withdrawal device
The electrical connection from the withdrawal device and the electrically heated filter are implemented in ready-made cable
to the terminal strip in the valve combination (Figure 2, Item 14). The connections are:
• electrically heated filter
• limit switch, Probe Withdrawn
• limit switch, Probe Inserted
• Drive motor for withdrawal device
2.3 Compressed air/measuring gas connection/ ext. cable connection
A quick-release coupling to DIN 3483 is provided for the compressed air connection (Figure 2, Item 1). The NW20
compressed air line must be connected to this.
The measuring gas connection (Figure 2, Item 18) is made via the ready-made, 3.5m long PTFE pressure hose with metal
braiding. This is directly screwed to the angular screwed joint. No further sealing with TEFLON is needed due to the conical
nipple connection on the hose.
The electrical connections are implemented according to the regulations of the local power supply utility and of the relevant
country.
The cables between the valve combination and the controller are not included in the supplied items and must therefore be
supplied to our specifications by the user. The required cable and the details about the cable connections can be taken from
the wiring diagrams in the supplied wiring manual.
The cables must be routed through the provided M screwed glands, sealed and again clamped. The fixtures for the cables,
measuring gas lines and compressed air hose should be produced by the user depending on the installation. See Figure 3 for
examples.
Note:
See general operating manual Chapter 2.10, Electrical connections.
< 1 > < 2 > < 3 > < 4 > < 8 > < 8 > < 9 >
< 6 >
Fig. 3 Suggested fastenings for holding the feed lines.
Legends: 1 Valve combination 6 Flat bar 30 x 4 mm
2 Fastening screw M8 7 Fastening for compressed air hose
3 Cable retention bracket 8 Pipe clamp
4 Fastening for measuring gas hose 9 Plastic cable protection
5 Fastening for control cable 10 M screwed gland for control cable ( Underside )
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