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Mass Flow/Pressure Controllers have flexible dual-valve design.

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January 24, 2014 - MCD Series offers user-selectable control modes that allow users to switch between mass flow, volumetric flow, and absolute pressure measurement and control for flexibilityduring laboratory use. Withdedicated inlet valve anddedicated exhaust valve,singleunit can control upstream and downstream flows as well as positive pressure or backpressure in both open and closed systems. Full scale mass flow rates are available from 0.5 sccm to 3,000 slpm.

Alicat Develops First Bidirectional Flow and Pressure Controller

Alicat Scientific, Inc.
2200 N. Wilmont Rd.
Tucson, AZ, 85745

Press release date: January 17, 2014

MUMBAI -- MCD-Series Dual-Valve Mass Flow Controllers Increase Experimental Possibilities

Alicat Scientific Inc.'s new MCD-Series Bidirectional Mass Flow and Pressure Controllers precisely and rapidly control mass flow rate, volumetric flow rate and absolute pressure of gases in two flow directions. This flexible dual-valve design is the first of its kind, allowing researchers to replace multiple dedicated instruments and make rapid changes to experimental setups.

User-selectable control modes allow users to switch quickly between mass flow, volumetric flow and absolute pressure measurement and control for maximum flexibility in laboratory use. With a dedicated inlet valve and a dedicated exhaust valve, a single MCD [ can control upstream and downstream flows, as well as positive pressure or backpressure in both open and closed systems. As a universal control element, it can be used to monitor or control a number of parameter combinations, making it useful in a variety of configurations.

Alicat's patented, internally compensated laminar differential pressure measurement [ yields linear results over a very wide flow range. The resulting volumetric and mass flow data is fully compensated for changes in pressure and temperature and corrected for the user's standard temperature and pressure (STP). Available 0.4% accuracy +0.2% full-scale repeatability and less than 100ms control response times ensure top performance of gas flow processes. The MCD-Series' large integrated display allows users to access setpoint control and PID valve tuning without need for a computer. It comes with 30 field selectable calibrations, and is available in full-scale mass flow rates from -0.5/+0.5 sccm to -3000/+3000 slpm. All units are backed by NIST-traceable calibration, comprehensive technical support, and a lifetime warranty.

To learn more about Alicat's MCD-Series Bidirectional Mass Flow Control, visit, or call Gajendra Kelkar on +91 9930047455. To see an "Ask Alicat" video featuring the MCD, visit

This press release and an archive of all Alicat news can also be found on the Alicat News Blog at

About Alicat Scientific:
Part of the international Halma group, Alicat Scientific designs and manufactures mass flow devices used in medical and scientific instrumentation, as well as specialty industrial applications, for high-precision measurement of gas and liquid flows. Its all-digital product range includes mass and liquid flow meters and controllers; pressure gauges and controllers; portable flow meters; calibration standards; software and accessories.

Primary Media Contact:
Gajendra Kelkar

Secondary Media Contact:
Sunil Balan
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