Setra Corporation Gas Differential Pressure Sensor Model 269
Gas Differential Pressure Sensor Model 269
Setra offers three types of accuracy with a wide pressure range from ultra-low differential pressure of 0 to 25 Pa, and DIN rail mountable options are also available. This makes on-site work easier.
Setra Corporation offers a wide range of pressure ranges from 0 to 25 Pa full scale, with accuracy options of ±0.25%, ±0.5%, and ±1% FS, allowing for selection based on application needs. An optional pressure display is also available. The output signal uses the common 4-20 mA standard. There is a DIN rail mount type available, making installation easy, and the wiring terminal block can be detached from the main unit, simplifying wiring work on-site. With the adoption of an internal stabilized power supply, it can be used with unstable power sources. To prevent wiring accidents, a reverse polarity protection circuit is built-in. The case is made from flame-retardant materials and has received UL-94-0 approval.
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basic information
Setra's Model 269 detects differential pressure and converts it into a linear 4-20 mA output signal for either unidirectional or bidirectional pressure. Developed specifically for high-performance applications, it can measure pressure with high resolution in harsh environments. A wide range of pressure options is available, from ±15 Pa to 25 Pa. The operating temperature range is broad, from -6°C to 60°C, with temperature compensation of 0.018% FS/°C. The sensor element of the 269 is made of TIG-welded stainless steel. It forms a variable capacitance between the electrode and the diaphragm, detecting changes in capacitance caused by pressure fluctuations between the diaphragm and the electrode, which is then converted into a linear output signal by Setra's proprietary electronic circuit. The various components of the sensor have a balanced temperature coefficient, resulting in minimal temperature influence and excellent long-term stability. The maximum allowable line pressure is up to 69 kPa.
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Applications/Examples of results
■HVAC (Heating, Ventilation, and Air Conditioning) ■Static pressure duct and clean room differential pressure measurement ■Energy management system ■Filter differential pressure monitoring ■Environmental pollution control ■Monitoring and control of furnace pressure ■Variable air volume control
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Company information
Air Water Mechatronics Co., Ltd. ST Division handles excellent measurement/control equipment focused on the most important themes of pressure and flow in the field of measurement and control in the industrial sector. In pressure measurement, as the Japanese distributor for Setra Systems, we have supplied numerous pressure sensors domestically for many years. Setra's pressure sensors are characterized by high precision and sensitivity, and are used in many advanced technologies, including semiconductor manufacturing equipment. Additionally, to accommodate various industrial pressure measurement scenarios, we also handle products from companies such as BD and Honeywell. We manufacture digital pressure gauges that incorporate or externally attach these pressure sensors. Within our company, various pressure standards with traceability to national standards are installed in a strictly air-conditioned calibration inspection room, allowing us to conduct inspections and recalibrations in-house. Regarding flow measurement, we offer unique and high-value-added products for both liquid and gas (mass flow). For liquids, we primarily provide small, cost-effective, and highly accurate turbine flow meters, as well as Coriolis flow meters. We respond to diverse needs with disposable sensors for pharmaceutical and medical manufacturing, as well as certified sensors for food and beverage applications.