New pressure sensors for mobile hydraulic applications

September 2001 Sensors & Transducers

In mobile hydraulic applications, switching valves in an abrupt fashion can lead to pressure spikes, which are many times higher than the operating pressure. In particular, load monitoring requires the highest reliability. Fast and accurate response, as well as clear and easy setting of the sensor is indispensable for the safety of the system.

IFM Electronic's new pressure sensors are designed especially for these mobile hydraulic applications providing reliability at a low cost. The Type PP 7544 series feature a bayonet type connector for fast and safe connection and their ceramic measuring cell is highly resistant to extreme conditions of use with an EMC resistance up to 150 V/m.

The PP pressure sensors provide quick and precise conversion of the sensor signal into switch points. These switch points are easy to set, even without system pressure. Programming from normally closed to normally open is possible at any time, and the user can freely select damping and delay times.

Meeting IP68 and IP69K requirements, the sensors have a measuring range of up to 40 MPa (400 bar). They are housed in stainless steel and are both shock and vibration-resistant. Operating on 9,6 to 30 V d.c. the sensors have a 3 ms response time and are suitable for operation in a -40 to +90°C temperature range.

An optional programming unit is available which is able to change a simple pressure switch into an intelligent sensor. The set parameters can then be transferred to any number of pressure sensors using the programming unit. IFM Electronic is represented locally by Shorrock Automation.

Shorrock Automation

(012) 346 1594

[email protected]

www.shorrock.co.za

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