Fairchild PAX1 motorised pressure regulators

Rotork has introduced the Fairchild PAX1 range of motorised pressure regulators. The design, based on the Fairchild MP2400 range, offers a flexible, low-power and field-convertible unit representing the next generation of motorised pressure regulation. The PAX1 is suitable for midstream and downstream natural gas systems demanding precision.

Operating from an 11–26 VDC power supply, the PAX1 is capable of controlling pressure ranges of 0–0.5 to 0–3000 psig. The low power consumption is suited to renewable energy sources. The units incorporate isolated 4–20 mA and non-isolated 1–5 VDC analog inputs to provide proportional linear positional control. In both control modes, the regulators lock in place on loss of signal or power supply.

Integrated within the improved human interface, push-buttons enable local control and facilitate the setting of various options. These include limit switches, travel alarms, high and low set points and analog feedback. A female hexagon motor drive interface also enables manual operation.

The IP68 watertight enclosure, combined with explosion-proof certification and an ambient operating temperature range of -40°C to +80°C, optimises potential operating environments, while the NAMUR standard mounting interface maximises suitability for industrial applications.