The requirement of liquid level meter is very strict1

Liquid level meter is most a kind of capacitance sensor for its own standard requirement is very strict, can't have a bit of negligence, it can calculate some corrosive liquid level, this means that it must be conducted on the materials of strict monitoring, because this will ensure that its quality, when not at work to surprises.

to the power supply requirement of liquid level meter is also very high, because it is a direct measure for some liquid even corrosive liquid, liquid and electricity is absolutely can't be together, so the power is usually made of insulating materials, input current and voltage must be strictly in accordance with the required current and voltage, itself guarantee absolute standard working environment.