electro-pneumatic positioners


TRIAC's new YT series of electro-pneumatic positioners is engineered for the harsh environments of chemical and food processing. The entire range is ruggedly built for high-performance valve automation applications, and includes corrosion-proof stainless steel and explosion-proof models. The YT 1000R explosion-proof electro-pneumatic positioner is available in both FM- and CSA-approved versions, designed to withstand and contain explosions inside the enclosure, preventing release of flames to the surrounding areas. Enhanced process-protection models lock down the system via a fail-freeze function in the event the 4-20mA input signal is lost.
    For applications requiring greater cost economy, the EP line of electro-pneumatic positioners is available in rotary (EPR) or linear (EPL) configurations. EP series positioners accept an analog 4-20 mA input signal, and have rugged aluminum diecast enclosures and stainless steel gauges standard. These vibration-resistant positioners provide precise calibration with simple span and zero adjustments, are repeatable within ±0.5 percent F.S., and are certified by NEMKO for ATEX and Eex md IIB T5.
    PP series pneumatic positioners utilize an input signal of 3-15 psi (0.2-1.0 kgf/cm2), capable of direct or reverse action with split range available. Like the electro-pneumatic line, TRIAC's pneumatic positioners are available in rotary (PPR) or linear (PPL) versions, and have various orifices available to increase or decrease flow as required.

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