Product Details

NIVOSWITCH vibrating fork level switches are suitable for level detection of liquids or granular, powdered solids.

Units with parallel vibrating fork are suitable for liquids, units with non parallel vibrating fork are suitable for solids. Mounted on pipes, silos, tanks or hopper bins it can control filling / emptying, also can generate fail-safe alarms providing overfill- or dry run protection.

The operation principle is based on that the electronic circuit excites a vibration in the fork probe. When the medium reaches and covers the fork, its vibration changes or stops. The fork will start vibrating again as the medium sets it free. The electronics senses the change of vibration and gives output signal after a selected delay.

The plastic coated version is recommended to use for aggressive mediums, the highly polished version is recommended to use for abrasive mediums. The PNP/NPN transistor output versions can be connected directly to PLC, or relay unit.

NIVOSWITCH Features

Compact and mini compact type
Rod extension up to 3 meters
Plastic PFA coated version
Polished vibrating part
Hygienic versions with various process connections and 0.5 micron fine polishing
Selectable sensitivity
Relay or electronic output
Switching performance does not depend on the change of liquid conductivity, dielectric constant, pressure and temperature
Medium temperature max. 130 °C
Output test with optional test magnet
Ex version
IP67, IP65/IP68 protection

Technical Specs


Type	Mini compact		Compact
	For liquids	For solids	For liquids	For solids
Insertion length	69 – 3000 mm	137 – 3000 mm	69 – 3000 mm	137 – 3000 mm
Material of wetted parts	1.4571 or PFA coating	1.4571 stainless steel	1.4571 or PFA coating	1.4571 stainless steel
Process connection	As per order code
Medium temperature	-40 °C … +130 °C , for PFA coated types: -40 °C … +120 °C
Ambient temperature	-40 °C … +70 °C	-40 °C … +70 °C	-30 °C … +70 °C	-40 °C … +70 °C
	with M12 connector: -25 °C … +70 °C
Medium pressure	max. 4 MPa (40bar)
Medium density	>0.7 kg/dm³	≥0.01 kg/dm³	>0.7 kg/dm³	≥0.01 kg/dm³
Medium viscosity	≤10 000 mm²/s (cSt)	-	≤10 000 mm²/s (cSt)	-
Power supply	2-wire DC: 15 – 29 V DC	2-wire DC: 15 – 27 V DC	20 – 255 V AC, 20 – 60 V DC
	2-wire AC: 20 – 255 V AC; 3-wire DC: 12 – 55 V DC
Power consumption	AC: depending on load; DC: < 0.6 W		DC: < 3 W
Housing material	1.4571 stainless steel		Paint coated aluminium or plastic (PBT)
Electrical connection	Connector, or 3 m integrated cable 2x0.5 mm2 / 4x0.75 mm2 /5x0.5 mm2		2x M20x1.5 cable gland, for Ø6 – 12 mm cable, terminal for 0.5 – 1.5 mm² wire cross section
Electrical protection	AC version: Class I, DC version: Class III		Class I	Class I
lngress protection	DIN connector type: IP65, M12 con. type: IP67, cable type: IP68		IP67
Mass	~ 0.5 kg + 1.2 kg/m extension		~ 1.3 kg + 1.2 kg/m extension