The pressure guiding tube and the differential pressure transmitter connector are separated. In the application of the differential pressure transmitter, the usual method is to connect to the connecting tube. Access the calibrated pressure source. This is a big hassle, work and labor intensive, and most worried about the disassembly of the joint news-oriented tube to pull off or leak problems. Be aware that no matter what type of differential pressure transmitter, its front and negative pressure chamber exhaust, drain valve or cock, which facilitates field calibration of differential pressure transmitters, which means the case of removing the pulse tube, The differential pressure transmitter can be calibrated. Calibrate the differential pressure transmitter, the three-valve positive, the negative valve closes, open the balancing valve, then unscrew the exhaust, drain valve or cock to vent, then make the joints instead of selecting a positive pressure chamber for the exhaust, drain valve or The cock; the negative pressure chamber adheres to a relaxed state, allowing it to pass through the atmosphere. The pressure source is connected to the self-made connector through the hose, the balance valve is closed, and the air circuit seal is inspected. Then the ammeter (or voltmeter) communication is connected to the transmitter output circuit, and the calibration is delayed after power-on. Pig Lighting,Pig Light Bulb,Pig House Lighting,Pig Farm Lighting Shenzhen AMB Technology Co., Ltd , https://www.birdscareled.com