Static Pressure Probe mounts in ducts.

Press Release Summary:

Model 267 Series low differential pressure transducers have integral static pressure probe made of extruded aluminum that mounts in most ducts. Probe features baffle at tip to minimize velocity pressure errors, and gasket to seal against duct, preventing leakage and providing accurate measurements. Probe is 7.8 in. long and 1/4 in. in dia, making it suitable for typical duct sizes. Transducers are available in six differential pressure ranges.

Original Press Release:


Boxborough, Mass. -- Setra Systems, Inc. has added an integral static pressure probe for duct mounting to its Model 267 Series of low differential pressure transducers.

Constructed of sturdy extruded aluminum, measuring 7.8" long and 1/4" in diameter, the probe is suitable for typical duct sizes. It is designed with a baffle at the tip, minimizing any velocity pressure errors. Additionally, the probe is designed with a gasket to seal against the duct, preventing leakage and providing accurate measurements. The probe allows for reliable maintenance-free installations and is available with Setra's Model 267 or Model 267 with optional LCD display.

The Model 267 Series improved capacitance-sensor design allows up to 10-psi overpressure (in either direction), with no damage to the unit. In addition, the sensor has thermally matched coefficients, which promote improved temperature performance (less than 0.033% FS/EF of thermal error for operation from +40 to +150°F) and excellent long-term stability.

The 267 Series offers 1.0% accuracy, with optional accuracies of ±0.4% and ±0.25% available. When ordered with the optional LCD, the 267 comes standard with +0.5% full-scale accuracy. The transducer's internal regulation permits use with unregulated 24 VAC or 24 VDC power supplies. In addition, the Model 267 is available with 3/16" O.D. barbed brass pressure fittings for 1/4" push-on tubing. Electrical connection is through a screw terminal strip with PG-9 or PG- 13.5 cable strain relief or conduit termination. The Model 267 is IP65/NEMA 4 rated and has a UL94V-O Flammability rating as well as complying with the European requirements of Council Directive 89/336/EEC.

Ideal for customers who need to configure on the fly, the Model 267MR offers up to 6 different pressure ranges (bi-directional and unidirectional) in each transducer, reducing inventory from 20 single range units to only 4. Ranges include +0.1 in. W.C. full scale to 30 in. W.C. full scale. The voltage output is field configurable to either 0 to 5 VDC or 0 to 10 VDC. A 4 to 20 mA output is also available.

Setra Systems, Inc. is a designer, developer, and manufacturer of high accuracy electronic instrumentation, which measures pressure, acceleration, and weight. Setra's products are used by many process and manufacturing industries, federal agencies, and research laboratories.

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