XMD smart differential pressure transmitters with display option

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XMD smart differential pressure transmitters with display optionNew XMD smart differential pressure transmitters from Impress Sensors & Systems 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 suitable 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.

XMD transmitters are available with differential pressure ranges from 75mbar to 2bar and with a static over-pressure capability of 130bar line pressure. The calibrated pressure range also benefits from a 10:1 turndown, which means that a 75mbar range can give a full scale output at 7.5mbar while still maintaining the 130bar line pressure. A 5:1 turndown ratio maintains the accuracy of the transmitter, which is +/-0.1 per cent of full scale.

Choice of outputs

Outputs available are 4-20mA as standard with the option of HART communications. If this is selected, the XMD is ATEX-approved as standard. The device is intrinsically 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 environments, so the electrical enclosure is a two-chamber aluminium die casting, powder coated with the option to include an integrated smart display. Sam Drury, Sales and Marketing Director at Impress Sensors & Systems comments: "The integrated display enables the user to programme the device, including electronic damping of the signal, offset adjustment [of up to 90 per cent of full scale] and a turndown ratio of 10:1. The two-chamber aluminium die cast housing is prepared for chemical seals to extend the application possibilities even further."

As mentioned above, there is an optional LCD display with a visible area of 32.5mm x 22.5mm. There is also a text display and a 52-segment bar graph for easy interpretation of the output from the device. Even with this display option, the XMD is still rated to IP67.

Follow the link for more information about the XMD smart differential pressure transmitter from Impress Sensors & Systems.

15 September 2009

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