Cleaning Gas Outlet - YOKOGAWA ZX8D User Manual

Check for continuity between 3 and 4 of the oxygen sensor - it should be around 2Ω.
When disconnected, replace the oxygen detector.
6.2

Cleaning gas outlet

Sulfate mist or oxide may be precipitated at the pipe output, depending on the components of
measuring gas.
Gas introduction case
Gas outlet pipe
Bushing for gas outlet
Clean the pipe according to the following procedure.
(1) After supplying atmospheric air or N2 standard gas for at least 5 minutes in the oxygen
analyzer, set the power supply and main unit power supply switch to OFF.
(2) Remove the inlet pipe of oxygen analyzer, and exhaust the gas to outside.
Beware of ventilation when sample gas contains a toxic component such as CO or SO2.
(3) Remove the outlet pipe and bushing of oxygen analyzer. Place a drain receiver on the
bottom part.
CAUTION
Beware of acid fluid inside the pipe. If acid fluid should contact your skin or clothes, immediately
wash them with large amount of tap water. If they should splash onto your eyes, seek medical
attention at once.
(4) Eliminate and clean the precipitates inside the gas outlet pipe with driver or absorbent
cotton. Be careful not to damage the tip of detector.
(5) Reconnect the pipe as before, paying attention not to cause gas leakage. Check the
indication of flow meter.
(6) Turn on the power switch and warm up oxygen analyzer.
Detector mounting screw
Zr detector
Packing
Gas inlet joint
Gas outlet joint
Zr detector external terminal block
F0601.ai
IM 11G00E01-01EN
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6th Edition : May. 21, 2018-00