The Setra 269 is a low differential pressure transducer, built for critical environments where a small pressure change matters, like cleanrooms, hospital isolation rooms, and HVAC systems. It uses a security-key calibration system, so the zero and span settings can’t be accidentally bumped by someone without the key, which matters in a facility where the pressure reading is tied to contamination control or patient safety.
In actual application, the 269 outputs a standard 4-20mA signal on a 2-wire loop, with 12mA at zero pressure on bidirectional units, so it drops straight into a typical BMS analog input. It’s rated to handle overpressure up to 2 PSI depending on the range selected, and the case is fire-retardant ABS rated to UL 94 V-0, with a removable process head and 3/16-inch barbed brass fittings for the tubing connections.
From our experience, this is a solid fit anywhere HVAC or energy management systems need to regulate airflow and pressure precisely, not just in healthcare or pharma settings. It’s available with DIN rail or base mounting, and an optional local display if you want a readout at the unit itself, not just at the BMS.
Before we quote this, we would normally check the pressure range and accuracy class you need (±0.25%, ±0.50%, or ±1.00% FS), and whether you need the display option. Hope this helps.
