Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 51)

IM 11M13A01-04E 4-1
4. Piping
4. Piping
This chapter describes piping procedures in the two typical system configurations for
EXAxtZR Integrated-type Explosionproof Zirconia Oxygen Analyzer.
• Ensure that each check valve, stop valve and joints used for piping are not leaking.
Especially, when there is any leakage at piping and joints for the calibration gas, it
may cause clogging of the piping or incorrect calibration.
• Be sure to conduct leakage test after setting the piping.
• Basically, apply instrument air (dehumidified to the dew point -20˚C or lower,
removed any dust, oil mist and the like) for the reference gas when piping.
WARNING
Do not loosen or remove any Flame Arrester of gas inlet/outlet during piping.
The detector modification or parts replacement by other than authorized representative of
Yokogawa Electric Corporation is prohibited and will void ATEX Flameproof
Certification, Factory Mutual Explosionproof Approval and Canadian Standards
Explosionproof Certification.
Flame Arrester