B-3

Control of liquids
Float levels switch

Intended use

The float level switch B-3 are used to keep between 2 points the level of liquid like water, oil, chemical products, etc., conductive or not, in tanks or recipients at atmospheric pressure.

Function

The B-3 bases their work due to the movement of a float. When the level of liquid rises up, the float reaches the mechanical stop and pull up the rod. This enables the action of the lever and reverses the position of the switch.

The adjustment of the commutation of the switch is obtained adjusting the mechanical stops at the desired rod point. If the float is blocked with the mechanical stops, it can be obtained only one punctual signal.

Mechanical connection

It is simple: the float must be vertically installed on the top of the tank with an appropiate support to fix it or through a M12 hole. The tank can have a cap to preserve the liquid against dust. Just a M12 hole in the cap allows the free movement of the rod.

Dimensions

Approximate measures given in mm.

Technical data


Name	Float switch
Type	B-3 – ref: 2505-2 B-3N – ref: 2505-3
Rod length	500 mm
Product density	0,76 Kg/l
Tank pressure	Atmospherical
Cable entry	Pg16
Switching voltage	240 V AC
Switching function	1 NO + 1 NC Double-Pole Double- Throw (DPDT)
Capacity of the contact	3 A / 240 V AC (for resistive loads) For inductive or capacitive loads, reduce at 50%
Available fluids	Air, gas or neutral liquids
Inlet diameter	2 mm
Actuating pressure	+2 – +8 bar
Flow at 4 bar	70 Nl/min
Activation pressure at 6 bar	<50 g
Fluid temperature	-5° C – +50° C
Work temperature	-5° C – +60° C
Switching function	NC (Under request NO)
Ambient temperature	-20° C – +70° C
Protection	IP40 according to DIN EN60529
Weight	0,42 Kg
Float weight	0,18 Kg
Counterweight weight	0,16 Kg
Materials:
Switch	Plastic
Float	Stainless Steel 1.4401
Rod	Stainless Steel 1.4401