Ⅰ.Advantages of Huahai pressure transmitter
Smart pressure transmitter has small volume, light weight, high accuracy, good reliability and good overload performance; has adjustable damping device,which can be used for the measurement of pulsating fluid;The transmitter adopts 4~20mA DC standard current signal output, two-wire system,with load, strong anti-interference ability.
Ⅱ.Technical advantages of Huahai pressure transmitter
1. Small volume and light weight of pressure transmitter. Because it has few parts, simple mechanism, and the transformation of differential pressure, displacement and capacitance signal is connected together, the volume is greatly compressed and the weight is reduced.
2. High accuracy. Because there is no mechanical transmission and friction, and the capacitance value changes relatively greatly, so the precision is easy to make high.
3. Reliability is good. Due to the small number of movable parts, the measuring part is a solid structure of fully enclosed welding, the electronic components undergo strict aging screening, and a special connector body is adopted, thereby greatly improving the reliability of the transmitter.
4. The range can be adjusted in a wide range, and it has a positive and negative shift structure.The adjustable range of the range is greater than 6:1, and the external connection of the range zero is adjustable.
5. The overload performance is good. The inside of the sensor adopts a concave arc surface overload protection structure with simple structure and reliable performance.
6. With adjustable damping device, it can be used for the measurement of pulsating fluid.
7. The transmitter is used in a dedicated circuit for flameproof and intrinsically safe type. The maximum output of this circuit is less than 30mA.
8. The transmitter can be attached with 100% pointer, LCD liquid crystal, LED digital tube display, and the field reading is very convenient.
9. The transmitter adopts 4~20mA DC standard current signal output, two-wire system, with load, strong anti-interference ability.
Single flange transmitter Smart pressure transmitter Pressure transmitter with remote device
Ⅲ.Maintenance knowledge of pressure transmitter
1. Prevent dregs from depositing in the pipe.
2. The pressure guiding tube should be installed in a place with small temperature fluctuations.
3. First,pressure transmitters should be prevented from contacting corrosive or overheated media.
4. When measuring the liquid pressure, the pressure tappings should be located on the side of the process pipeline to avoid deposition of slag.
5. When measuring the liquid pressure, the installation position of the pressure transmitter should avoid the impact of the liquid , so as to avoid the overpressure damage of the pressure transmitter.
6. When wiring, pass the cable through the waterproof joint and tighten the sealing nut to prevent rainwater from leaking into the transmitter housing through the cable.
7. When the pressure transmitter measures the gas pressure,the pressure tappings should be located at the top of the process pipeline, and the pressure transmitter should also be installed in the upper part of the process pipeline so that the accumulated liquid can be easily injected into the process pipeline.
8. When freezing occurs in winter, if the pressure transmitter is installed outdoors,anti-freezing measures must be taken on the instrument to avoid the liquid in the pressure tappings from volume expansion due to freezing, resulting in the damage of the sensor.