The LRNH51S42 float switch is designed for reliable monitoring of liquid levels in industrial vessels and systems. When the level changes, a magnet located in the float actuates the reed relay switch, providing simple and accurate signalling of the selected level. Thanks to the float and housing material made of glass-filled polypropylene, the switch is resistant to chemically aggressive media.

The switch body is made of glass-filled polypropylene (black float), which offers excellent chemical resistance and low water absorption. The switch is fitted with an M16x2 thread and supplied with 2 m leads, while installation is possible from inside the vessel as well as from the outside using a compression gland. Typical applications include monitoring the level of oils, acids, hydroxides, aqueous solutions and coolants in industrial operations.

Main features

Indicates liquid level by means of a reed relay actuated by the float magnet
Resists chemically aggressive media thanks to the body and float made of glass-filled polypropylene
Allows selection of normally open or normally closed contact by rotating the switch through 180°
Provides a tight connection via the M16x2 thread with the option of installation from inside or outside the vessel
Meets IP65 protection rating on the cable outlet side for protection against dust and water jets
Operates reliably within an operating temperature range of -30 to +110 °C
Connects quickly and easily using the supplied 2 m leads

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IP Rating	IP 65
Power Supply	250 VAC, 100 VDC
Temperature	-30...110 °C
Weight	0.50 kg

Honeywell LRNH51S42 horizontal float switch (LRNH51S42)

Honeywell LRNH51S42 horizontal float switch (LRNH51S42)

Parameters and catalogs

Main features