YOKOGAWA IR800G, User Manual

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IM 11G06A01-02EN
3-3
3. INSTALLATION
1st Edition : Oct. 27, 2023-00
3.3 Piping
WARNING
In piping, the following precautions should be observed.
Wrong piping may cause gas leakage.
If the leaking gas contains a toxic component, there is a risk of serious accident being induced.
Also, if combustible gas is contained, there is a danger of explosion, fire or the like occurring.
• Connect pipes correctly referring to the instruction manual.
• Exhaust should be led outdoors so that it will not remain inside the sampling equipment or
indoor.
• Exhaust from the analyzer should be relieved in the atmospheric air in order that an unnecessary
pressure will not be applied to the analyzer. Otherwise, any pipe in the analyzer may be
disconnected to cause gas leakage.
• For piping, use a pipe and a pressure reducing valve to which oil and grease are not adhering. If
such a material is adhering, a fire or the like accident may be caused.
CAUTION
Piping connection must be secured. Gas inlets have several types: reference gas inlet, outlet or
purge gas inlet. When the connection is insecure or wrong, combustible, toxic, explosive gas may
be accumulated inside the analyzer or system.
Observe the following when connecting the gas pipes.
• The pipes should be connected to the gas inlet and outlet on the analyzer, respectively.
• Connect the sampling system to the instrument by using corrosion-resistant tube. The
material should be such as Fluoropolymer (PTFE), stainless steel, or polyethylene. In case
where there is no danger of corrosion, don’t use rubber or soft vinyl tube. Analyzer indication
may become inaccurate due to the adsorption of gases.
• Piping connections are Rc1/4 (1/4 NPT) female-threaded. Cut the pipe as short as possible
for obtaining quick response. Pipe of approx.
∅
4 mm (inside diameter) is recommended.
• Entry of dust in the instrument may cause operation fault. Use clean pipes and couplings.