FLK Gas Sampling System - MPIP - Free

SQ250 FLK Gas Sampling System
If a retraction device is used, then the filter must be fitted with the fixing bracket at a distance of approx. 10 cm to the
measuring gas connection of the probe. It should be ensured that the two measuring gas connections are positioned
exactly opposite.
The valve combination must be mounted in the immediate vicinity of the probe and the filter. The joining
contained in the supplied items must be used to obtain proper functioning.
• The two purging connections between the filter and the valve combination are joined with the two stainless steel
corrugated hoses (3/4" and 1/2" connections).
• The connection from the filter to the condensate separator is implemented with TEFLON pipe or with PTFE pressure
hose depending on the version.
• TEFLON pipe: Here the PTFE screw-on gland for the pipe connection is screwed onto the adjustable angular gland on
the filter. The PTFE angular screw-in gland is screwed into the condensate separator. These must be joined with the
TEFLON pipe such that it does not break off and runs slightly slanting to the condensate separator.
pieces
Note:
All screw glands for the measuring gas must be sealed with TEFLON.
• PTFE pressure hose: This PTFE pressure hose is provided with M16x1.5 union nuts at both ends. With this
the PTFE pressure hose is connected directly to the screw-glands on the filter and condensate vessel.
If an electrically heated measuring gas line is used between the probe and the analyzer cabinet, then it must be
connected directly to the filter. When carrying this out, the ERMETO screw glands contained in the supplied
items can be used. The measuring gas line must be restrained at the valve combination so that the complete
load does not fall on the joining piece.
• The connection between the valve combination and the pneumatic limit switch consists of the ready-made compressed air
lines with conical nipples and union nuts. With the pneumatic limit switch attention must be paid to the connections. The
second connection "A" must be sealed with the stop-plug.
• The connection between the valve combination and pneumatic motor is made with the third ready-made compressed air
line.
2.6 Laying the coolant line to the probe
With the movable feed lines to the traversable probe it must be ensured that the complete traversing range remains free
without any hindrance due to the lines. The laying of the feed lines must be carried out very carefully.
Note: With the relevant mounting plan and the types of installation stated in the mounting instructions, nonmandatory
suggestions are given, since normally the local conditions demand adaptation of the line routing.
The main points to be considered are as follows:
• setting up of the coolant hoses as twist-free as possible;
• select the distance between connections not too large, so that hoses are not subject to tensile stresses even in the end
positions;
• within the complete traversing area do not over-bend hoses - the smallest radius is 200 mm;
• do not twist the hoses impermissibly by movement, but instead bend them in the plane of movement as free of twisting
as possible;
• do not place any obstructions in the traversing area;
• the coolant lines must not come into contact with heat-sensitive parts.
Copyright ® SIEMENS Page 12 04/04