ABB AO910 Diffused Silicon Pressure Transmitter

Product Overview
The ABB AO910 is a high-performance pressure transmitter designed for precise measurement and conversion of pressure signals into standardized electrical outputs. Utilizing advanced diffused silicon sensor technology, it offers excellent temperature compensation, explosion-proof capabilities, and high reliability. This makes it suitable for demanding industrial environments, including process automation, food safety, and energy production.

Technical Specifications

  • Pressure Range: -0.1 to 900 MPa (customizable based on requirements)
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Description
  • Output Signal: 4–20 mA standard current output, compatible with RS485 for digital communication
  • Accuracy: ±0.075% of full scale (FS)
  • Stability: ±0.25% FS over three years
  • Temperature Compensation: -40°C to +85°C wide temperature range compensation
  • Supply Voltage: 12–24 VDC
  • Thread Connection: G1/4 NPT
  • Protection Class: IP68 (dust-tight and waterproof)
  • Explosion-Proof Rating: ExiaIICT6 (intrinsically safe for hazardous environments)
  • Membrane Material: 316L stainless steel (corrosion-resistant)

Functional Characteristics

  • High Precision: Utilizes a single-crystal silicon pressure-sensitive resistor with a Wheatstone bridge configuration, ensuring minimal repeatability and hysteresis errors.
  • Robust Design: Stainless steel housing and IP68 protection enable operation in harsh conditions, including humidity, corrosion, and vibration.
  • Advanced Compensation: Laser trimming and computer-based temperature compensation minimize zero and span temperature drift.
  • Low Power Consumption: Intrinsically safe design with low current and voltage requirements, suitable for explosion-proof applications.
  • HART Communication Support: Enables integration with HART-compatible devices for enhanced diagnostics and configuration.

Application Scenarios

  • Process Control: Used in chemical, petrochemical, and pharmaceutical industries to monitor and control process parameters such as pressure, temperature, and flow in reactors, boilers, and pipelines.
  • Hydraulic and Pneumatic Systems: Controls valves, actuators, and pumps in hydraulic control, air compressors, and gas pipelines.
  • Water Treatment: Monitors water pressure in wastewater treatment plants, water supply systems, and irrigation channels.
  • Food and Beverage: Measures liquid levels in storage tanks and fermentation vessels, ensuring compliance with hygiene standards (e.g., FDA/3A).
  • Energy Sector: Used in power generation for turbine control, boiler monitoring, and circulating water systems.
  • Environmental Monitoring: Facilitates precise control in environmental protection applications, such as air quality management and groundwater monitoring.
  • Corrosive Environments: Suitable for measuring pressure in corrosive media like acids and alkalis, thanks to its 316L stainless steel membrane.
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