[Daily Question 200090413] What faults have the differential pressure transmitter encountered when used on site, and how were they dealt with?
Thread Content
For the differential pressure transmitter and its accessories (valves, pressure pipes, three-valve manifold, etc.) that are matched with the orifice flowmeter, what failures have been encountered during on-site use, and how were they dealt with? Format: Installation site: Fault phenomenon: Cause of failure: Treatment method: Pay attention to the post format, encourage originality, and do not spam. Original posts will add 10 wealth. Copying other people's posts and spamming posts will all reduce 10 wealth. This post was last edited by Mobei Yihai on 2009-4-12 20:46 ]
Installation site: Fault phenomenon of second line flow reduction in normal pressure and vacuum device: Causes of large fluctuations in flow rate display: Isolation fluid evaporation loss, positive and negative pressure chamber imbalance treatment method: Stop the watch, start the pump, refill the isolation fluid, and then restart the watch. It's normal.
Installation site: Circulating air flow measurement of polyethylene plant using Venturi tube failure phenomenon: The reason why the pressure guide tube is often blocked: How to deal with powder in circulating gas: Install a backflush module on the pressure guiding pipe to ensure the cleanliness of the pressure guiding pipe.
Installation site: Steam flow measurement failure phenomenon: Causes of large fluctuations in flow indication: The steam quality is poor, salt is precipitated, and the pressure hole is blocked. How to deal with it: , remove the instrument and clear the pressure point.
Installation site: Steam flow measurement failure phenomenon: Transmitter output drops, rises and remains unchanged fault causes: How to deal with pressure pipe leakage: Repair welding and sealing. Installation site: Circulating gas flow measurement failure phenomenon: Reasons for large error in measurement values: The gas flow pressure measurement method is incorrect or the installation of the pressure guide pipe does not meet the requirements, resulting in liquid accumulation inside the pressure guide pipe. How to deal with it: Correct installation method and timely drainage.