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Hi experts, I'm sorry if this querry is too basic but I'm not an electrical engineer and will need some clarification regarding the 4-20 mA loop. So, we have an Interface that is normally providing 24 VDC power to our sensor and get back 4-20 mA signal from this sensor thru a 2 wire loop. Now...

Hi jbeckhou, We are doing some maintenance on the API flange, there is some minor scratch and errosion on the sealing area. So we are wondering if there is an inspection procedure and acceptance criteria for the sealing area. Hope my question is clearer now. Thanks for your help. Rgds, Toan,

Hi Experts, Do you know about some acceptance criteria for API flange Sealing area? I tried to look in to API 6A but was lost.. And for Weco sealing area? Do you think there is such criteria? Thank a lot in advance! Rgds, Toan,

Hi experts, Do you think I could connect 2 RF flange with different class (300# and 600#) together? They have the same number of bolts and dimensions, and we'll take the lowest rating as the rating of the assembly. Is it allowed to do so? Thanks alot, Toan,

Hi all, Is there any requirement for securing instrumentation liner/fitting under high pressure (eg. 5K psi)? We normally use slings to secure our weco union pipework. But a recent incident with the high pressure liner has raised a question of whether we need to secure our instrumentation...

Hi all, Here on a drilling rig we use some pressure sensor which is 4-20mA and Intrinsically Safe (IS). Everything is grounded properly... However, one day we observed that some sparks were generated when the sensor cable touch a metal part of another equipment. We are wondering from where...

Hi all, I'm working in Oil industry offshore. Here on the drilling rig we use some pressure sensor which is 4-20mA and Intrinsically Safe (IS). Everything is grounded properly... However, one day we observed that some sparks were generated when the sensor cable touch a metal part of another...