Setra 269 Low Differential Pressure Transducer


  • Secure Calibration – No Zero/Span Access
  • Security key required for calibration
  • End Point 0.25% Accuracy – Improved Linearity
  • 2:1 Turndown Ratio Available
  • Fire Retardant Case (UL 94 V-0 Approved)
  • Enhanced Thermal Performance
  • DIN rail mounting option available
  • Optional display available



Setra’s Model 269 transducer is the highest accuracy solution for monitoring differential pressure in critical environments. Its 0.25% accuracy is calibrated using the “End Point Method” which improves linearity when compared to competitive transducers which use the “Best Fit Straight Line” method. The 269’s calibration is tamper-proof by utilizing a removable process head that eliminates inadvertent adjustments while allowing in-situ calibrations without removing the process tubing. Calibrations can be performed automatically when performed with Setra’s MicroCal outfitted with an expert system. The 269 offers multiple mounting configurations, including the DIN rail, for quicker and easier installation.


Key Benefits

  • High Accuracy for Demanding Pharmaceutical Applications
    The Model 269 differential pressure transducer uses a dead-ended capacitive differential sensing element with superior linearity and enhanced thermal performance to ensure the highest accuracy and reliability in your most critical and demanding applications.
  • Secure and Fast Calibration & Service
    The Model 269 is designed specifically for the pharmaceutical industry’s stringent calibration guidelines in mind. The 269 has a removable process head to allow technicians to perform calibrations without cutting pneumatic tubes during each calibration cycle. The 269 also provides secure calibration; in order to make sensor adjustments, the unit requires a calibration key to prevent unauthorized personnel from making unwanted changes.
  • Flexibility in Installation
    The Model 269 is available in both a base and DIN rail providing the installer with flexible mounting options. The base mount allows the sensor to be installed anywhere, whereas the DIN rail configuration is designed to maximize space efficiency in a pharmaceutical panel. Optional display is available for all mounting options.

Dpstar is an authorized distributor of Setra Systems. We provide our customers with the best selection of instrumentation and equipment with unrivaled prices to perform in Pressure Sensing Solutions. Setra’s pressure sensors are known for their quality and reliability. Designed with premium capacitive sensing technology, Setra offers single-range and multi-range (field selectable) pressure sensors. Capable of measuring both liquid and gasses, Setra has the product to meet a breadth of HVAC applications and can be trusted in your most critical applications. Trust Setra’s over 50 years of pressure transducer engineering excellence.



Performance Data
Code V Code E Code G
Accuracy Class (FS) ±0.25% ±0.50% ±1.00%
Non-Linearity (Endpoint) ±0.15% ±0.35% ±0.75%
Non-Linearity (BFSL) ±0.10% ±0.10% ±0.10%
Hysteresis ±0.05% ±0.05% ±0.10%
Non-Repeatability ±0.05% ±0.05% ±0.05%
Zero/Span Setting Tol 16±.04mA 16±.08mA 16±.12mA
Thermal Effects1
Compensated Range °F 20 to +140
Zero/Span Shift %FS/°F 0.01% 0.02% 0.02%
Maximum Line Pressure 10 PSI
Overpressure Up to 2 PSI (Range Dependent)
Long Term Stability 0.5% FS/1 YR
Environmental Data
Operating Temp. °F (°C) -20 to +160
Storage Temp. °F (°C) -40 to +185
Physical Description
Case Fire Retardant ABS
Mounting Base Mount or 35mm DIN Rail
Electrical Connection Detachable Screw Terminal Strip
Pressure Fittings 3/16” O.D. Barbed Brass Fittings on Removable Process Head
Zero/Span Adjustments External Security Key (269425-02)
Electrical Data (Current)
Circuit 2-Wire
Output2 4 to 20mA
Bidirectional output at zero pressure 12mA
External Load 0 to 800 ohms
Minimum Supply Voltage (VDC) 13.5 + 0.02 x (Resistance of receiver plus line)
Maximum Supply Voltage (VDC) 30 + 0.004 x (Resistance of receiver plus line)
Pressure Media
Clean air or other similar non-conducting gases.
1 Unit calibrated at nominal 70o F. Max thermal error computer from this datum.
2 Calibrated at the factory with a 24VDC loop supply voltage and a 250-ohm load. Specifications are subject to change without notice.


Setra 269 Low Differential Pressure Transducer_DpstarGroup