Incite Fire ASD 532, Operating Manual

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Mounting
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5.3 Material for the sampling pipe
Notice
Tube materials and fittings must be rated at least as Class 1131 of norm EN 61386-1 . Document T 131 194 lists
materials that meet this standard; it is part of the device approval of the ASD 532 according to EN 54-20.
Other materials do not conform to the EN 54-20 standard and may be used only if the manufacturer’s written con-
sent has been obtained and the following conditions are met.
•
Compression resistance = min. 125 N (EN 61386-1)
•
Shock resistance = min. 0.5 kg, fall height of 100 mm (EN 61386-1)
•
Temperature range = min. -15°C to +60°C (EN 61386-1)
•
Tube inner diameter = 19 to 22 mm
•
Bending radius, bend = min. 30 mm.
The tube material is available in various plastics and metals. The individual plastic tube parts are usually glued. The flexible
tube material for equipment monitoring is pluggable. The metal tubes are connected by means of press fittings.
The rigid plastic tubes can be shaped by heating. The tubes can be painted a different colour, although attention must be paid
to the chemical compatibility between paint and tube.
The following materials are available:
Material Connection
PVC (polyvinyl chloride, contains halogen) Gluing
ABS (acrylonitrile-butadiene styrene, contains halogen) Gluing
PA (polyamide, contains no halogen) Plug-in connection
Copper Press fitting
Stainless steel Press fitting
Notice
The two materials that use adhesives (PVC and ABS) must not be combined as different adhesives are used.
Transitions from PVC or ABS to PA materials (flexible tube parts) are possible using special adhesive-screw junc-
tions.
Danger (see also Sec. 9.5.1)
As a material, PVC releases corrosive and toxic gases if burned or improperly disposed of. The use of PVC mate-
rials should therefore be restricted to wherever it is expressly permitted by the operator of the installation. In ap-
plications stipulated the use of halogen-free plastics, ABS or PA materials must be used for laying the sampling
pipe. Country-specific guidelines and regulations must be observed.
The adhesives and cleaning agents used for connecting PVC and ABS materials contain solvents and are com-
bustible. For this reason, prior to working with these materials it is imperative to read and observe the safety in-
structions and information provided by the adhesive supplier.
A list of the available materials for the sampling pipe (pipes, fittings etc.) for the ASD 532 is available in a separate docu-
ment ( T 131 194 ).
ASD532 Operating Manual