Sensors for fluid monitoring

IFM Electronic reckons it can offer a comprehensive family of sensors, which covers virtually every fluid monitoring requirement.

IFM Electronic reckons it can offer a comprehensive family of sensors, which covers virtually every fluid monitoring requirement.

In addition to units with single digital outputs, the IFM range now includes pressure and flow sensors with dual digital outputs, allowing one sensor to do the work of two; analogue output sensors which are a cost-effective replacement for expensive instruments; and a full range of units designed for use with the revolutionary AS-i (actuator sensor interface) system.

To help users choose the most suitable products for their application, and get the best from them, IFM offers a comprehensive technical support service.

This covers every project stage, from drawing up the initial specification, to producing the design, and even commissioning and fault-finding on the finished installation.

IFM also provides a one-year no-quibble warranty on all pressure and flow sensors.

The latest additions to the IFM pressure sensor range include five analogue-output models, which cover the range 0.5 to 400bar, and are equally suitable for pneumatic and hydraulic systems.

IFM's patented technology provides linear 4 to 20mA output signals, and have a separate on/off output with fully adjustable set-point and hysteresis.

Among the highlights of the flow sensor range are two new liquid sensors which provide accurate and reliable flow indication, even in media where the temperature is changing at 300K/min.

One of the units has dual digital outputs which are ideal for signalling maximum and minimum flow conditions.

The other new flow sensor has a single analogue output.

Flow rates covered, in water, are 3 to 150cm/s, and the units have a response time of less than four seconds for a step change in flow from 10 to 90%.

For air-flow sensing, typically in cooling and air-conditioning equipment, IFM offers a monitor with a head which is specially designed to minimise soiling by contaminants in the airstream, thus ensuring long-term sensing accuracy.

The monitor has a single digital output, and can be set for flow rates from 1 to 10m/s.

An integral timer ensures that false signals are not generated by momentary flow fluctuations.

(This was Engineeringtalk's Top Story on 2 October 2002).

(This was Engineeringtalk's Top Story on 2 October 2002).

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