A series of resistors and reed ampoules are mounted in the sheath that, when closed by the passage of the magnet placed on the float, generate a potentiometric effect throughout its entire path.
The version of the level sensors CNR3000 / D includes a lower float that acts on a vial, indicating the presence of water at the bottom of the tank.
The attachment to the tank is by means of a 2 “GAS thread.
The terminals necessary to connect the device to a measuring instrument are located in the level sensor head. In installations with explosive atmospheres, the level probe must be connected through approved galvanic isolators or that the instrument is intrinsically safe.