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  • Users: Krahim4
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  1. Krahim4

    crude oil metering system HMI design

    Hi group member To do work in a safety PLC system you have to be SIS certified in the metering system do you need some certificate to work or design/rectify the metering system HMI refers to any standard?
  2. Krahim4

    4-way diverted valve hydraulic actuator

    I have a 4-way diverter valve hydraulic actuator, the sequence of unseating is not working, the actuator is trying to unseat but it fails (see attached drawing)can I have support .what is cause before we do any action you hear the oil return back to the tank, when we opened the drain line...
  3. Krahim4

    insulation resistance between Line to Line

    Hi In a 3Ph generator, 400 V 500KVA What is the expected value of PI for the insulation resistance between Line to Line
  4. Krahim4

    temp sensor testing

    In a temp sensor test certificate, what is last column 93.cms meaning? see attached https://files.engineering.com/getfile.aspx?folder=378f42fa-9de3-49e7-a557-fdd71e74ce41&file=MMC_CALIBRATION_CERTIFCATE.pdf
  5. Krahim4

    under ground GRE pipe failure

    thread378-413013 The main underground firefighting ring has been designed and executed in1998 to deliver water to all the firefighting outlets i.e. hydrants, monitors… etc.; the main ring has been executed from 12-inch size Glass reinforced epoxy (GRE) pipes and 4-inch branches pipes, with the...
  6. Krahim4

    I have joystick in hyd oil system ,

    I have joystick in hyd oil system ,contact point are connected in series and parallel with 1K ohm resistance .why ?http://files.engineering.com/getfile.aspx?folder=4cfc3d48-3736-4705-9140-7ae3b35c0be2&file=IMG_20171211_143609.jpg

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