Hi,
I have a coolant tank for a piece of equipment that has a built in capacitive level sensor (i.e. two prongs that act as a capacitor and the value of which changes as the fluid level changes). There is no circuitry included with the sensor, essentially all I have is a capacitor that changes its capacity. The range of capacity is about 30 μF when the tank is full to 0F when empty. I want to create a circuit that when the capacitance is 0F, i.e. the tank is empty, then a constant 5v is outputted which can go to sensor to say switch off the coolant.
The circuit will have to be powered by 24vDC and be low power to be safe to work around.
I have a basic knowledge of electronic components, but this is too complex for me.
Any help is appreciated.
Thanks,
Dave
I have a coolant tank for a piece of equipment that has a built in capacitive level sensor (i.e. two prongs that act as a capacitor and the value of which changes as the fluid level changes). There is no circuitry included with the sensor, essentially all I have is a capacitor that changes its capacity. The range of capacity is about 30 μF when the tank is full to 0F when empty. I want to create a circuit that when the capacitance is 0F, i.e. the tank is empty, then a constant 5v is outputted which can go to sensor to say switch off the coolant.
The circuit will have to be powered by 24vDC and be low power to be safe to work around.
I have a basic knowledge of electronic components, but this is too complex for me.
Any help is appreciated.
Thanks,
Dave