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266DSHBSHA1A1

The ABB 266DSH (BSHA1A1 configuration) is a high-performance differential pressure transmitter designed for precise and reliable measurement in industrial process applications. Part of ABB’s 266 DSH series, it combines digital capacitive sensor technology with advanced electronics to provide excellent accuracy, repeatability, and long-term stability.

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Specifications General Type: Differential Pressure Transmitter Series: ABB 266 DSH (High Static Pressure) Output: 4–20 mA two-wire with HART communication Sensor Technology: Digital capacitive sensor with temperature compensation Measurement Performance Reference Accuracy: ±0.04% of span Repeatability: ±0.02% of span Turn-Down Ratio: Up to 100:1 Response Time: <100 ms Long-Term Stability: ±0.1% of URL over 10 years Pressure Ratings Differential Pressure Range: Configurable per BSHA1A1 sensor selection Static Pressure Rating: Up to 41 MPa (DSH high-static variant) Proof Pressure: 1.5 × static rating Overpressure Protection: Integrated mechanical system Materials & Construction Wetted Materials: Stainless steel / Hastelloy / optional alloys (per BSHA1A1 selection) Fill Fluid: Silicone or inert fluid Housing: Aluminum or stainless steel (per configuration) Process Connections: Flanges or threaded high-pressure adapters Electrical & Communication Power Supply: 10.5–45 VDC Output Signal: 4–20 mA + HART digital Load Resistance (HART): ≤600 Ω Local Configuration: Optional push-button or LCD interface Environmental Conditions Electronics Operating Temperature: –40 to +85 °C Process Temperature: According to sensor and fill fluid Humidity: 0–100% RH, non-condensing Ingress Protection: IP67 / IP68 depending on housing and terminals Vibration Resistance: Up to 10 g, 10–2000 Hz Certifications / Standards Explosion Protection: Ex ia / Ex d / Ex nA (depending on configuration) Compliance: ATEX, IECEx, PED, CE EMC & Surge Protection: Industrial-grade standards