Acrodyne introduces the YT-3400 smart Exd flameproof positioners to supersede the previous YT-2400 series Exd smart positioner.
Key changes include the torque-motor technology, which replaces the original Piezo system to provide a more reliable performance especially where air quality is less than ideal. The unit exhibits significantly low air consumption when compared to other models of valve positioners in the market.
This unit also incorporates Partial Stroke Test (PST) that enables identification of valve disc/ seat malfunctions; valve stem/ gland packing malfunctions; actuator malfunctions or any other pneumatic equipment malfunctions. Additional benefits include improvement of SIL levels, elimination of bypass line or valve, and extension of FST (full stroke test) time intervals.
The YT-3400 Exd smart positioners feature a die-cast aluminium housing with epoxy coating to IP66 weatherproof rating. The unit comes complete with an easy-to-read visual digital LCD display to simplify commissioning and diagnostics in the field.
Additional features include auto calibration, auto/manual switch, PID control, 4-20mA feedback signal, limit switches, HART communication and 4-button local control. The unit can be supplied in rotary or linear options. Acrodyne can also mount and pre-commission to the client’s actuator.