Liquid density sensor ML-B11

digital

The CNPS-ML-B11 drilling fluid density sensor uses a differential pressure differential mode of operation. Two pressure bellows with corrugated membranes installed at different heights detect the pressure difference produced by the liquid at different depths. The pressure difference is proportional to the liquid density. The two “H” shaped vibration beams on the sensor convert the differential pressure signal into a frequency signal, send it to the pulse counter, and then pass the difference between the two frequencies directly to the CPU (microprocessor) for data processing. After D/A conversion, Output 4 to 20mA standard DC current signal corresponding to drilling fluid density can also be directly transmitted by digital signal. EJA118W transmitter can also transmit data through digital communication mode through I/O port and external device BT200. That is to use HART protocol (1.2kHz) to superimpose data signal on 4~20mA signal line. When data communication, frequency signal No interference effect on the 4-20mA signal. The distance between the two pressure diaphragm of the CNPS-ML-B11 drilling fluid density sensor is 45cm and 60cm, the outlet density sensor is 45cm, and the entrance density sensor is 60cm。 According to the needs of measurement, we choose to install sensors on the drilling fluid inlet and drilling fluid outlet respectively. When drilling fluid level fluctuates, the upper and lower flanges must be immersed in the mud to keep it upright and not tilted, otherwise it will affect the accuracy of measurement. The transmitter changer shall be above the mud level and not immersed in mud.。