XMD pressure transmitter measures level and flow

An Impress Sensors and Systems product story
Edited by the Engineeringtalk editorial team Sep 16, 2009

Impress Sensors and Systems has introduced the XMD range of smart differential pressure transmitters for process-industry applications.

The transmitters can be used for level measurement of closed, pressurised tanks; pump and filter control; or for closed-pipe flow measurement in conjunction with an orifice plate, Venturi or nozzle.

The XMD range is ideal for flow applications due to the device's ability to switch the output from a standard linear output to a square-root extraction where flow rate can be output.

Target industries include chemicals, paper and pulp, petrochemicals, energy and power, food and dairy and pharmaceuticals.

The XMD has a differential pressure range from 75mbar up to 2 bar and with a static over-pressure capable of 130 bar line pressures.

The calibrated pressure range can also be turned down 10:1 times, which means that a 75mbar range can give a full-scale output at 7.5mbar, while still maintaining the 130 bar line pressure.

A 5:1 turn-down ratio maintains the accuracy of the transmitter, which is +/-0.1 per cent FSO.

Outputs available are 4-20mA as standard with the option of having Hart communication.

If this option is selected, the XMD is Atex-approved as standard.

The device is safe for Zone 0/1 and an Ex d version is available with a flameproof enclosure for Zone 1 applications.

The XMD range is designed for harsh process manufacturing environments and so the electrical enclosure is a two-chamber aluminium die cast, powder coated with the option to include an integrated smart display.

The optional display is an LCD with a visible range of 32.5 x 22.5mm.

There is also a textual display and a 52-segment bar-graph that runs along the bottom of the display for easy interpretation of the output from the device.

Even with this display option, the XMD is still rated to IP67.

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