Zero-point calibration issue of EJA double-flange level gauges
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There is a double-flange level gauge, and the control room reported that it was showing an abnormally high reading. When I went to the site, everything was normal. The manager asked that the zero point be checked; this gauge can only use BT200 for calibration. May I ask if it is necessary to loosen the screws on the upper and lower flanges in order to adjust the zero point manually? Is a migration needed? Thank you, master craftsman!
When performing zero calibration on an EJA double-flange level gauge, it is necessary to first loosen the screws on the upper and lower flanges to ensure a seamless connection with the pressure medium, and then carry out the calibration manually. No migration operation is required during calibration; simply follow the steps in the operation manual to perform the calibration manually. After correction is completed, the screws on the upper and lower flanges need to be tightened to ensure safety. .
During the previous and next valve isolation procedures, loosen the screws to allow air to enter; the pressure value displayed will then be zero. If this value differs from the current one, it needs to be adjusted