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On line Hygrometers are used to measure moisture content in CRU recycle gas. On many occasions the measured values are suspected to be incorrect by plant people. What type of on line hygrometers are highly reliable and what are the maintenance practices for these analyzers?
 
Answers
06/06/2013 A: Virendra Kapoor, Petroleum Refining Consultants, vkkapoor9@yahoo.com
Recycle gas contain hydrocarbon gases that may have dew point higher than moisture. They may interfere with the results
01/06/2013 A: Sridhar Balakrishnan, Bharat Oman Refineries Limited , laksrid@yahoo.com
There are a few companies who supply On line hygrometers including Easidew Online Dew Point Hygrometer, Alpha Moisture Systems. Maintenance practices that are followed: Visually check for damage of system components , rings , gaskets, front panel , system optics, mounting hardware etc. Wipe interior and exterior of all components, and tighten loose knobs and hardware, as required. Wiping of system optics.