Connection Of Sampling Tubes - GE FHSD720C Installation And User Manual

FHSD700C Series Product Guide

3.3 Connection of Sampling Tubes

There are several common guidelines that should be followed when attaching the pipe network to the
FHSD700C detector:
 Pipes must NEVER be glued to the inlets of the detector
 Pipe network itself MUST be glued together
 Use removable unions where necessary
Unused inputs on FHSD7215DC detectors should be looped to one another using short lengths of
microbore. For example, if an FHSD7215DC has unused inputs 9 to 15, one way of connecting the
unused inputs would be to use short pieces of microbore to connect inputs 9 to 12, 10 to 13, 11 to 14
and have input 15 capped off. Ensure that these short lengths of microbore do not kink.
Do not insert ANY object into the inlet ports other than the correct size of piping. This is
to avoid damage to delicate electronic flow sensor components mounted just inside
each port opening.
Other pipe and inlet specifications are addressed in the following table.
Table 3-6: Detector Inlet to Pipe Network Termination Specifications
Detector Inlet Port
FHSD720C 25mm outer-
diameter UPVC
tubes
FHSD721C / Tapered push-fit
FHSD721DC
FHSD724DC & Tapered push-fit
FHSD726DC
FHSD7215DC -
14
Acceptable Pipe Maximum Pipe
or Adapter Length
2 x 100m
25mm; or
26.7mm (0.75in.)
with 25 to 26.7mm
(0.75in.) adaptors
26.7mm (0.75 in.) 4 x 100m
to 25mm
4 x 100m
25mm; or
or 6 x 100m
26.7mm (0.75in.)
with 25mm to
26.7mm (0.75in.)
adaptors
6mm outer-
50m
diameter, 4mm
inner-diameter
Note: Tube lengths
flexible nylon tube
should be equal
GE Security
Other Considerations
-
-
-
Other materials may be used
e.g. FEP/ Stainless Steel with
suitable adaptors for harsh
environments
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