Questions about single-flange level transmitters
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I have a fire tank here; water has already been released from it. Now I need to conduct a loop test. My idea is to close the ball valve at the front end of the transmitter, loosen the flange bolts, allow air to enter the positive pressure chamber so that the transmitter can be reset to zero, and then carry out the five-point loop test. I would like to ask the experts: is my approach correct?
Circuit testing and whether water is drained or not – it has nothing to do with the valve operation, right?
To zero the transmitter, equalize the pressures in the positive and negative chambers. Zero-point calibration.
Use the 475 meter head for circuit testing, and enter the circuit testing options. If joint debugging is required, apply a five-point pressure test to the positive pressure.
This level gauge is of the single-flange type, with the positive pressure chamber exposed to air; the zero adjustment is correct. As for connecting a pressure testing device: lol, simply attaching the gauge head to 475 will suffice for the adjustment
Circuit testing involves using a hand-held controller to simulate signal output