Operating instructions

Installation and Connection
GMS810-/GMS811-FIDOR · Operating Instructions · 8013911 V1-0 · © SICK AG 25
Subject to change without notice
3.4.5 Connecting the sample gas
 If the sample gas pressure is more than 150 hPa (mbar) higher than the ambient pres-
sure: Install a bypass line (e.g. T-form screw connection) from which the FIDOR can draw
the sample gas.
 If the sample gas contains large quantities of dust: Install an external dust filter in the
sample gas supply line (preliminary filter, coarse filter).
1 Lay the heated line from the sampling probe to the FIDOR.
2 Screw on the heated line.
– Use protection against bends (the sample gas connection on the FIDOR may not be
loaded with the weight of the heated line).
– Always take the lowest permissible curvature radius of the pipe into account (refer
to the technical specifications of the heated line).
– Prevent thermal bridges to the heated line (e.g. at the securing points).
Use an insulating cover (assembly
 p. 61, §7.3.3.2) and sheath the connection
points with the insulation hose.
3.4.6 Connecting the gas outlet
 Connect the tube to the gas outlet (screw connection as delivered).
The direction of the protection against bends can be adapted to the operat-
ing position:
 p. 61, §7.3.3.2
CAUTION: Noxious and aggressive exhaust gases.
Exhaust gases can contain components harmful to health or irritating.
 Lead the measuring system gas outlets outdoors or into a suitable flue.
 Do not connect the exhaust gas line with the exhaust gas line of sensitive
subassemblies (e.g. cooler). Aggressive gases could damage these subas-
semblies as a result of diffusions.
 Observe information from the plant operator.
Lay the exhaust gas line in a suitable manner.
 The gas outlet must be open to the ambient pressure.
 Do not bend or crimp exhaust gas lines.
Condensate accrues in the exhaust gas line.
 Use a suitable hose line (PTFE) to run the condensate outlet into an open
condensate container or a waste disposal line.
 Lay the line so that it always runs downwards.
 Keep the line opening free from any blockages or liquids.
 Protect the line from frost.