4 How to Use
4-9. How to Tube
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4-9. How to Tube
4-9-1. Sampling inlet/outlet (GAS IN, GAS OUT)
(1) Sampling inlet/outlet of the unit
The detector has an Rc1/4 thread inside of the sampling
inlet/outlet (GAS IN, GAS OUT), to which
“
polypropylene
”
unions are normally attached. Because their material varies
depending on the measuring gas, please specify the measuring
gas.
The compatible tube is a Teflon tube of ø6 (OD) - ø4 (ID). The
tube must be installed with the supplied inners and sleeves
attached to prevent a leak.
When the tube is cut, its cut point might be smaller than inner
diameter. Use a file etc. to expand the inner diameter of the cut
point. To remove cut-dust or other materials remaining inside of
the tube, blow compressed air into the tube before connecting
it to the detector.
(2) Required flow rate
The flow rate required for the detector is 500 cc/min or
more.
Consult RIKEN KEIKI for pumps, aspirators, etc. that draw gases externally.
(3) Tube material
Some gases to be detected have highly adsorptive or corrosive property. The tube material needs to be
determined taking that point into consideration.
WARNING
The detector is designed to draw gases under the atmospheric pressure.
Applying excessive pressure to the sampling inlet/outlet (GAS IN, GAS OUT) of the detector may
cause the disconnection of internal tubes, and the drawing gases may leak, resulting in a
dangerous situation. Be sure that excessive pressure is not applied to sampling inlet/outlet while
using the detector.
Connect an exhaust tube to the detected gas outlet (GAS OUT) located at the bottom of the main
unit to discharge a gas after detection to a point regarded as a safe place.
CAUTION
The method of drawing a sampling gas and tube (length and material) need to be determined. For
more information, please contact RIKEN KEIKI.
Union
Inner
Sleeve
Pipe
