The Setra Model 261C is a low differential pressure transducer built for fast, precise readings on low-range applications. It measures differential pressure or gauge (static) pressure, and it’s commonly used across HVAC systems, pharmaceutical plants, and cleanrooms where you need to reliably hold a very small pressure range.
We see this used a lot in bio-safety labs, infectious disease rooms, air handling units, and stairwell fire and smoke protection systems – anywhere a facility needs to prove a pressure differential is being maintained, not just estimate it. It measures ranges as low as 0-25 Pa, and comes with either 4-20mA, 0-5Vdc, or 0-10Vdc output depending on what your controller needs, with an optional built-in LCD display for local readings.
In actual application, this unit runs on 24Vdc excitation (24Vac available for voltage output versions) and includes a temperature compensation circuit to keep readings stable. It’s built for clean air or similar non-conducting gases, in a die-cast aluminium enclosure rated IP65.
Before we quote this, we would normally check the exact pressure range you need, the output signal type, whether you want the LCD display option, and the standard or high-accuracy build (±1% FS standard, or ±0.4%/±0.25% FS options). Hope this helps.
