RKI Instruments GD-K71D - Manual (Page 21)

PT2E-1052
20
４−８．Caution at piping construction
（１）Piping port of detector
For this detector, PT 1/4 male screw thread is cut
for sampling pipe port(GAS IN, GAS OUT)
and polypropylenes union is provided. As this
is deviated from the kind of gas used, specify
it at the time.
This pipe used is φ6（OD）−φ4（ID）PTFE tube.
When make piping, take care not to leak by
putting accessory sleeve. The kind of piping
material is different by kind of detection gas.
（２）Sample flow rate
●
The flow rate of this detector is above 500cc/min.
●
When suck from remove place, consult the nearest
agent or RIKEN KEIKI.
（３）Piping material
For detection gas, there is strongly adsorptive gas and corrosive gas. By considering
these points, this must be decided..
CAUTION
It is required to decide the connection tubing(length, material). Contact
the nearest agent or RIKEN KEIKI for detail.
WARNING
This is designed to draw sample gas in air.
When the exceeding pressure is given to the sampling pipe(GAS IN, GAS OUT),
the internal pipe is removed and it is dangerous by the leak of detection gas. Use it
so that the excessive pressure cannot be given.
For exhaust gas, after detection, exhaust it to the safety zone by connecting the
exhaust hose to GAS OUT on the bottom of detector.
Union
Inner
Sleeve
Pipe