Level gauge calibration
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When calibrating a faulty level gauge, what reasons does the instrument technician need to consider in relation to the issues with the on-site glass level gauge?
You yourself said that the level gauge is malfunctioning; of course it needs to be calibrated, because that’s exactly what’s happening due to the malfunction... What are you trying to say?
Glass plates are the most accurate, unless it is a container under high temperature and pressure.
The principle of the glass tube level gauge is based on a U-shaped tube; it is not affected by the density of the medium, resulting in accurate measurements!!
Reply to 2# chq198710: Yes, the glass panel shows the actual liquid level. But why is it necessary to use glass plate level comparison to recalibrate accuracy, and how are the changes made to effect this calibration?
Of course, a on-site glass plate level gauge is used to calibrate the level transmitter; as for how to carry out the calibration, it depends on the type of level transmitter being used.
Reply to 6# sunjh0574: How is a double-flange differential pressure transmitter used for measuring liquid level, and how is it calibrated using a glass plate?
First, is the double-flange trend still valid? If it’s correct, just adjust the zero knob directly on the glass plate
Reply to 8# I Love Number 7: What is the principle behind the corrections?
The pressure difference in the U-shaped glass tube is used for adjustment; the scale of this pressure difference in the U-tube is used to calibrate the double-flange differential pressure transmitter in accordance with the scale of the on-site glass level gauge – it’s very simple!