Level Controller KR 1 electronic EX

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The NIVA level controller KR 1 electronic Ex was designed especially for use in intrinsically safe electrical circuits in potentially explosive atmospheres according to ATEX 95. In accordance with license SEV 06 ATEX 0137 the level controller KR 1 electronic EX may be used in zones 1 and 2 as well as in gas groups IIA, II B and IIC, where exists an explosion hazard due to combustible materials in temperature classes T1 to T6. The controller is equipped with a change-over contact (SPDT), meaning that depending on the electrical connection, the level controller can be used both to empty and fill a tank. Unlike level controller MS 1 electronic EX, type KR 1 electronic EX is a wide angle controller, which means that only one controller is required for switching on and off.

Available versions:

Application:

For use in intrinsically safe electric circuits in EX zones 1 and 2.

Electronic connection:

Connection of level controllers	Wire
	blue	black	brown
For emptying a tank	insulate	insulate	X	X
For filling a tank	X	X	X	X
Alarm high level	insulate	insulate	X	X
Alarm low level	X	X	X	X

Technical data subject to change

Potential equalization wire to prevent electrostatic charging

Technical data:

Specific Weight:	0,95 - 1,05
Max. temperature:	80°C
Breaking capacity:	*1 - 100 mA / 4 - 40 V
Inductance Li:	0
Capacitance Ci:	0
Switch point:	45°
Protective system:	II 2G EEx ia/ib IIC T6
Cable cross section:	4G0,75
Height / diameter:	40 / 100 mm
Housing quality:	PRE-ELEC PP**
Housing Colour:	Black
Cable quality:	TPK / PVC
Cable colour:	Blue

* Micro-switch with gold-plated contacts especially for low currents in electronic circuits ** Specially deflective plastic to prevent electrostatic charging when used in Ex-area (in accordance with ATEX 95).