Capacitive level measurement principle: probe line and conductive liquid constituted a
capacitor, among them probe line metal inner core is one pole of capacitor the other pole
is conductive liquid, the material between them is high stability PPR or gather fluorine ethylene.
The probe line insulators outer as media of capacitor poles, surrounded area by liquid change
along with the change of the liquid level, so that make relative area of capacitor polar changed
which leading to the change of capacitance. According to the capacitance formula we can find
out the relationship between liquid height and capacitance.
Parameters:
Power supply : DC 12 V-24 V
Displacement range: 20 to 2000 mm
Output signal: 0-5 VDC (9 V-28 V DC);4-20 mA (three wire, 15 V-28 V DC)
Digital RS485 output (MODBUS RTU) (9-28 V DC )
Linear: analog output: 0.25%, 0.5%, 0.1%
The temperature of the medium:-60 ℃-+250 ℃
Working temperature:-25 ℃-+ 85 ℃
Application:
1, tanker, automobile fuel tank
2, the steel industry
3, metallurgical industry
4, oil field, chemical industry
5, liquid measurement
Capacitive level sensor has auto-calibration function, the user can carry through zero or range automatic calibration
through the two buttons or two lead lines, can adapt to the different requirements
of various complex place. Product core parts adopt international advanced highly
integrated special IC chip.
