1151 pressure transmitter use and maintenance

Machine, roller coater, no need for fixture assistance, saving operation time, easy to operate, British mechanical inventor Mozley created a modern lathe with screw drive tool holder centuries ago, and adopted the exchange gear first in 1800 Prevent the transmitter 1151 pressure transmitter from avoiding contact with corrosive or overheated media during use to prevent dross from depositing in the conduit. When measuring liquid pressure, the pressure tap should be opened on the side of the process pipe to avoid sedimentation. For the measurement of gas pressure, the pressure port should be opened at the top of the process pipe, and the transmitter should also be installed in the upper part of the process pipe so that the accumulated liquid can be easily injected into the process pipe. The pressure pipe should be installed with small temperature fluctuations. Wherever, when measuring steam or other high-temperature medium, it is necessary to add a condenser such as a buffer tube (coil), and the operating temperature of the transmitter should not exceed the limit. When freezing occurs in winter, the transmitter installed outside must be taken. Antifreeze measures to prevent the liquid in the pressure inlet from expanding due to the volume of ice. The EJA transmitter leads to the damage of the sensor. When measuring the pressure of the liquid, the installation position of the transmitter should be Liquid-free impact (water hammer phenomenon) to avoid damage to the sensor over-voltage. When wiring, pass the cable through the waterproof connector (accessory) or the winding tube and tighten the sealing nut to prevent rainwater from leaking into the transmitter through the cable. Inside the housing. Capacitive sensor pressure relief transmitter zero position can not go back: it is most likely caused by the pressure sensor seal. Generally, it is because of the sealing ring specification (too soft or too thick). When the sensor is tightened, the sealing ring is compressed into the sensor pressure port to block the sensor. When the pressure is pressurized, the pressure medium cannot enter, but when the pressure is large, the seal is suddenly opened. In the circle, the pressure transmitter is changed by the pressure, and when the pressure is lowered again, the sealing ring is returned to block the pressure guiding port, and the residual pressure is not released, so the sensor zero position is not coming down, and the pressure transmitter is a kind of The pressure transmitter of the intelligent pressure transmitter is converted into a meter that can transmit the standardized output signal. How to solve the fault of the pressure transmitter? For example, the output of the pressure transmitter does not change, and the output of the pressurized transmitter suddenly changes, and the pressure is transmitted. Most of the reasons for the no-output of the power supply are the open or short circuit of the wire itself; the power supply has no output or the power supply is not matched; the instrument is damaged or the meter is not matched; the sensor is damaged; the transmitter has a large deviation from the pointer pressure gauge.

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