1、 Overview of MPM489W Liquid Level Transmitter
The MPM489W liquid level transmitter is a fully sealed submersible diffusion silicon liquid level measuring instrument. This type of transmitter is composed of a pressure resistance OEM pressure sensor that has undergone long-term stability and reliability testing, as well as a high-precision transmitter specific circuit, which is installed in a stainless steel housing. The integrated structure and standardized signals provide convenience for on-site use and automated control. The dedicated cable is sealed and connected to the casing, and can be used in liquids compatible with the transmitter structure material for a long time.
The MPM489W liquid level transmitter has the advantages of small size, light weight, and good long-term stability. It is suitable for water level or liquid level measurement and control in fields such as medicine, metallurgy, power plants, mines, urban water supply and drainage, and hydrological exploration.
2、 Performance indicators of MPM489W liquid level transmitter
1. Range: 1 2 5 10 20 50 100 200mH2O
2. Overvoltage: 1.5 times full range
3. Accuracy: ± 0.5% FS
4. Long term stability: Range>20mH2O, ± 0.2% FS/year Range ≤ 20mH2O, 20mmH2O
5. Temperature error: zero degree full
Range>10mH2O ± 0.02% FS/℃ ± 0.05% FS/℃
Range ≤ 10mH2O ± 0.05% FS/℃ ± 0.05% FS/℃
6. Working temperature: -10 ℃ to 80 ℃;
7. Storage temperature: -40 ℃ to 100 ℃
8. Power supply: 11V~28VDC
9. Output signal: 4mA~20mA DC (two-wire)
10. Load resistance:<(U-11)/0.02 (Ω)
3、 Structural material of MPM489W liquid level transmitter
1. Shell: Stainless steel 1Cr18Ni9Ti;
2. ○ Ring: Fluororubber;
3. Rubber sleeve: Nitrile rubber;
4. Cable: 7.5mm polyethylene special cable;
5. Diaphragm: Stainless steel 316L;