Valve Positioners feature explosion proof design.

Press Release Summary:

Designed for process control applications that demand high levels of safety, intrinsically safe Series 3731 requires single rotary pushbutton for start-up. Enclosure has separate terminal compartment, allowing direct cable entry or connection without spark barriers for cable conduit systems. If explosive atmosphere forms inside enclosure and ignites, enclosure will prevent passage of flames out to explosive surroundings. LCD can be rotated 180° to ensure relevant data is visible at a glance.

Original Press Release:

Valve Positioners Built to Withstand Toughest Challenges

Series 3731 explosion-proof valve positioners from SAMSON CONTROLS are designed for process control applications which demand the highest levels of safety and reliability.  In addition to their exceptional durability these intrinsically-safe positioners provide outstanding accuracy and are easy-to-operate.  A single rotary pushbutton is all that is required for start-up; turn to select parameters and push to activate them.

This convenient method of operation is still possible in hazardous areas because the shaft design of the rotary pushbutton through the housing is explosion-proof.  Also, the design of the enclosure with its separate terminal compartment, allows direct cable entry or connection without spark barriers for cable conduit systems.

The Series 3731 positioner is housed in a rugged enclosure which, even if an explosive atmosphere forms inside the enclosure and ignites the enclosure will withstand the explosion preventing the passage of flames out to the explosive surroundings.

An easy-to-read liquid crystal display ensures that relevant data is visible at a glance and regardless of the valves mounting position, data is never displayed upside down because the display can be rotated by 180° at the push of a button.  The analogue control helps the positioner achieve outstanding positioning accuracy which allows the microprocessor to concentrate on other tasks.

The positioners can be conveniently configured on-site, or by using HART communication, while the additional option of fully integrating EXPERT valve diagnostics into the positioner, provides all the necessary information for predictive maintenance.

Further details and product literature is available from: John Middleton, Samson Controls, Redhill, Surrey, RH1 5JQ, UK

Tel: 01737 766391

Fax: 01737 765472

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