LEVEL

LEVEL SENSOR

REED SWITCH CHAIN TECHNIQUE A float with a built-in magnet moves with the surface level of the medium being measured along a guide tube in which a row of small reed switches are installed. In conjunction with a resistor chain an output signal can be generated which is proportional to the float position and thus to the level of liquid. Various resolutions are available and can reach up to 6.35 m depending on the application. Versions which work on the magnetostrictive principle can provide resolutions down to below 1 mm.

MAGNETOSTRICTIVE The measuring process is triggered by a pulse of current. This current generates a circular magnetic field along a wire of magnetostrictive material stretched in the probe tube. A float with permanent magnets is used at the point being measured (liquid level). This magnetic field from the float twists the wire.

LEVEL INDICATOR

MAGNETIC LEVEL INDICATORS A float in a bypass chamber (standpipe), fitted on the side of a tank, rises and falls with the liquid level of the medium in the tank being measured. The bypass chamber is completely liquid and gas tight. The only moving part in contact with the liquid is the float. When the float moves a two coloured magnetic roller is turned through 180 ° by the magnet built into the float and this causes a change in colour in the sight window on the outside of the chamber. In this way a continuous visual indication of the liquid level is achieved, completely without any external power source.

A magnetic level indicator is also available for over-tank mounting. With this design rollers are fitted on a chamber above the tank and turn due to the effect of a magnet at the top end of a guide rod, which is supported at its bottom end by a float. The only part in contact with the liquid in this design is the float.

SLT 5.0 FLOW & LEVEL

PSL PUMP STATION

LIT 25 LEVEL

DLT 2.0

FLOAT VALVE

CONTROL PANEL

MAC 3

VARIABLE SPEED DRIVE