KARI ATEX-approved Silo Switches

OPERATION AND INSTALLATION

At the end of a cable hangs a cone containing a micro switch which operates when the cone is tilted some 25° in any direction from its normal vertical position. The unit must be installed a minimum of 250 mm from the silo wall and a minimum of 300 mm from the centre opening. 40 mm of cable is required from the end of the protective conduit to the cone. The same requirements hold true for the side mounted switch.
When the silo is filled to the predetermined capacity the switch is activated by the rising level of the item being stored.

	Examples of Density differences causing different
	degrees of tilt in different items:
	- gravel about 55°
	- wheat about 45°
	- barley about 40°
	- oats about 38°
	- grain about 40°

	TECHNICAL INFORMATION
	Voltage 250 VAC	Type MS1 Free floating – switch open
	Current 1A AC1	Type MS1 Tilted – switch closed
	Weight 130 g	Type MS2 Free floating – switch closed
	Operating temperature 0°C - + 50 °C	Type MS2 Tilted – switch open
	Cable dimensions 2x1 mm2, 2 m
	Cone material PP
	Cable Insulation rubber
	Protection class IP 66/67