Pressure switches

Motion and fluid control specialist Norgren has expanded its range of pressure switches to include two new models.

Motion and fluid control specialist Norgren has expanded its range of pressure switches to include two new models – the 33L and the 33E.

Offering a vacuum and relative pressure rating of -1 to 600 bar, the new 33L features a 3 colour LED display that is visible from a distance of 6 metres, ensuring that an operator can detect critical conditions from long distances. The 33L features a self-diagnosis function to detect system errors, while an electronic lock prevents unauthorised personnel from changing the set up. Featuring two transistor (or binary) output signals, the 33L provides a switching output and a warning output that can also be programmed as an additional switching output thus delivering advantage through flexible user features.

The 33E is an economical solution that features a relative pressure range from 0 to 400 bar and comes with either thread or flange connections The 33E features a one transistor (or binary) output signal and, like the 33L, also has an electronic lock.

Both series are suitable for use with gaseous, liquid, aggressive and neutral fluids. Connection is easy through the use of an M 12 x 1 electrical connector and there are various different options for mounting. The new pressure switch is lightweight and offers less than or equal to 1.5% FS accuracy. With a minimum switching life of 50 million cycles, the switching point and the reset points are adjustable between 0 to 100% of FS.

The devices are shock proof to 25g, in the x, y, and z axes according to DIN EN 60068-2-27 and vibration proof to 10g, 5 to 500Hz, in line with DIN EN 60068-2-6.

Both devices features IP67 protection in accordance with DIN 40050 and are suitable for an ambient temperature of -20 degrees C to +80 degrees C. With a switching time of less than 10msec (33L) and 3msec (33E), they weigh only 0.06 kg.

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