Setra 2641R25WB11T1F Trans

The Setra 2641R25WB11T1F is a high-accuracy differential pressure transducer engineered for critical low-pressure sensing in HVAC and building automation systems. Designed with a ±0.25 in. w.c. bidirectional range, this Model 264 pressure sensor utilizes a tensioned stainless steel diaphragm and a capacitive glass substrate to ensure superior long-term stability and resistance to mechanical shock. The unit provides a standard 4-20mA analog output, making it compatible with most industrial controllers and PLCs. With a 3/16" push-on barbed fitting and a fire-retardant glass-filled polycarbonate enclosure, this HVAC differential pressure transmitter is built for rapid installation on DIN rails or panels. It is an industry standard for monitoring building static pressure, filter status, and cleanroom environments where precise VAV system pressure sensing is required to maintain ASHRAE standards and system balance.

• Minimal Calibration Drift: The capacitive sensor design minimizes the need for field recalibration, ensuring reliable duct static pressure readings over time.
• High Overpressure Capability: This unit handles up to 10 PSI of overpressure without catastrophic failure or significant 0-point shift.
• Variable Mounting Options: Compact footprint with an optional DIN rail mount allows for high-density installation in control cabinets.
• NIST Traceable Accuracy: Standard ±1.0% FS accuracy provides the precision necessary for sensitive low differential pressure applications.

Common Questions

How do I zero the 2641R25WB11T1F after installation?
After mounting and wiring, ensure no pressure is applied to the high or low ports, then adjust the accessible zero potentiometer until the output reads exactly 12mA for this bidirectional unit.

Can this transducer be used for liquid media?
No, the Setra 264 series is strictly designed for air or non-conductive gases. Using liquid media will damage the internal capacitive element.

What is the maximum loop resistance for the 4-20mA signal?
The maximum loop resistance depends on the supply voltage; typically, at 24 VDC, the loop can handle up to 800 ohms, allowing for long cable runs without signal degradation.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.