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266HRHPRRA7 B7TB

The ABB 266HRH (PRRA7 B7TB configuration) is a high-pressure differential pressure transmitter from ABB’s 266 Series, designed for precise and reliable measurement in demanding industrial applications. This transmitter integrates ABB’s advanced digital sensor technology, offering high accuracy, repeatability, and long-term stability under harsh conditions.

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Specifications General Type: Differential Pressure Transmitter Series: ABB 266 HRH (High Pressure Differential) 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 PRRA7 sensor selection Static Pressure Rating: Up to 105 MPa (high-pressure HRH variant) Proof Pressure: 1.5 × static rating Overpressure Protection: Integrated mechanical system Materials & Construction Wetted Materials: Stainless steel / Hastelloy / optional alloys (per PRRA7 selection) Fill Fluid: Silicone oil or inert fluid Housing: Aluminum or stainless steel (B7TB configuration) Process Connections: High-pressure flanges or threaded adapters Electrical & Communication Power Supply: 10.5–45 VDC Output Signal: 4–20 mA + HART digital Load Resistance (HART): ≤600 Ω Local Configuration: Push-button or LCD interface (if equipped) Environmental Conditions Electronics Operating Temperature: –40 to +85 °C Process Temperature: According to sensor and fill fluid selection 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