The gas-liquid booster pump is powered by constant current power supply to reduce the influence of ambient temperature. When the pressure changes, due to the change of bridge arm resistance value, the output voltage of gas-liquid booster pump also changes. After amplification and conversion, the differential amplifier converts the output voltage into the corresponding current signal. After the current is compensated by the nonlinear rectifier circuit, the input pressure signal is generated into a standard DC 4-20mA output signal with approximately linear relationship.
1、 Cylinder diameter and stroke: you can intuitively see the volume of the gas-liquid booster pump. Generally, the larger the cylinder diameter is, the higher the price of the gas-liquid pump will be. The output flow of the booster pump with large cylinder diameter and stroke is larger, which also determines the stability of the pump, but the cylinder diameter of the pump depends on the customer's requirements for on-site operating conditions;
2、 Another decisive factor is the pressure ratio of gas-liquid booster pump. The higher the pressure ratio is, the greater the pressure output will be, and the requirements for sealing ring and material will be more stringent. When customers choose gas-liquid pump, they must pay attention to the demand for the output pressure of the pump, and the type selection should leave a margin, which must not be too large or too small;
3、 Some gas-liquid booster pumps need special customization due to the particularity of the pressurized medium (corrosiveness, viscosity, etc.). In this case, the labor and cost will be large, so the price of gas-liquid pump will be on the high side. Generally, the quotation is based on the non-standard price;
The above article is a description of the price of gas-liquid booster pump. I hope it can help you