Samson Controls’ Series 3731 explosion-proof valve positioners are housed in a rugged enclosure which will withstand an explosion preventing the passage of flames out to the explosive surroundings even if an explosive atmosphere forms inside the enclosure and ignites the enclosure.
These intrinsically-safe positioners also 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 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.
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 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.
These intrinsically-safe positioners also 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 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.
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 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.
