| Feature | Specification | | :--- | :--- | | | 4-20 mA DC (analog) + HART® digital communication | | Supply Pressure | 1.4 – 7 bar (20 – 100 psi) | | Output Capacity | Up to 11 scfm (5 l/s) at 3.4 bar (50 psi) supply | | Ambient Temp Range | -40°C to +85°C (-40°F to +185°F) | | Enclosure Rating | IP66 / NEMA 4X | | Pilot Stage | Piezoelectric (no continuous air bleed) | | Feedback Type | Non-contact magnetic sensor (no mechanical linkage) | | Communication | HART 5 or HART 7 |

Always ensure your instrument air is dry and oil-free to below Class 3.2.2 (ISO 8573-1). The piezo pilots are robust, but contaminants are the #1 failure cause.