Low power control and monitoring of automated process valves

June 2001 PLCs, DCSs & Controllers

Addressing the increasing demand for low power monitoring and control of automated process valves, the Westlock Quantum LP integrates position sensors, low energy solenoid valves and fugitive emissions monitors into a single unit meeting the specific standards set by international approval agencies.

Engineered and certified to meet NEMA 4, 4x and hazardous location requirements in Division 1 and 2 areas, the Quantum LP elevates the integration of sensors and controls to a new level.

Low power control and position monitoring

The Westlock Falcon series of solenoid valves is specifically engineered to address low power valve actuation requirements. When interfaced with computer-based process control systems requiring low power energy supplies, the utilisation of Falcon solenoids translates into immediate economic benefits. Required power levels for actuation control are efficiently reduced to 5% of the energy required for operation of conventional valves. Integrated within the Quantum housing and capable of operating in any position, Falcon solenoids are available in general purpose, Division 2 (nonincendive) and Division 1 and 2 (explosion-proof and intrinsically safe) configurations. Both 3-way for single acting and 4-way for double acting actuators carry standard Cv ratings of .3, .5, 1.2 and 3.5.

A wide range of sensors is available for monitoring valve position. Mechanical switches are the least expensive and possess SPDT and DPDT capability. Magnum sensors, hermetically sealed against the intrusion of explosive gases and liquids, provide maximum resistance against moisture and corrosion. Solid-state sensors are internationally approved for intrinsically safe applications as are both Magnum and mechanical sensors under their classification as 'simple apparatus'. If required, a complete range of resistive and current transmitters provides a full range monitoring of valve position.

Valve & Automation

(011) 397 2833

(031) 579 2593

(035) 751 1458

[email protected]

www.valve.co.za

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