High precision air and gas velocity sensor AVS701

thin-filmcompactfor industrial applications

Product Overview: The AVS701 air and gas velocity sensor is developed and designed for demanding industrial applications. It sets a new standard in air and gas velocity measurement and is proven to last up to 20 times longer in harsh environments. Maximum efficiency and process reliability are ensured through highly accurate measurements, simple installation with integrated sensor positioning, and a process gas library. The optional external pressure sensor compensates for variations in ambient pressure. Key Features: - Shows up to 3 measurands simultaneously - Freely selectable layout and measurands - Linear gauges for quick perception - Connector for external pressure probe (optional) - Realtime pressure compensation - IP65 protection rating - Pressure-tight models up to max. 10 bar - 2 freely scalable analogue outputs, current / voltage - Short-term power supply via USB Technical Data: - Air velocity measuring range: 0...2 m/s (0...400 ft/min), 0...15 m/s (0...3,000 ft/min), 0...40 m/s (0...8,000 ft/min) - Accuracy air velocity: 0.06...2 m/s: ±0.03 m/s, 0.15...10 m/s: ±(0.1 m/s + 1% of mv), 0.2...40 m/s: ±(0.2 m/s + 1% of mv) - Temperature measuring range: -40...+140 °C (-40...+284 °F) - Accuracy (T): ±0.5 °C (±0.9 °F) - Power supply class III: 24 V DC ±20% - Protection rating: IP65 / NEMA 4X Typical Applications: - Metal additive manufacturing (3D printer) - Monitoring of incoming and outgoing air for HVAC controls - Filter monitoring and laminar flow control in cleanrooms and labs - Exhausts, fume hoods and glove boxes in pharmaceutical, food processing, and semiconductor industries - Volumetric flow of supply air for combustion control - Air conveying systems - Wind tunnels and climate simulators Advantages: - 60% quicker sensor setup with accurate sensor positioning using a specially developed alignment crimp and tool - Automatic capturing of the operating flow for reliable measurement results, with temperature and pressure compensation - Exceptional measurement accuracy of ±1% of measured value, and even ±0.03 m/s in the range of 0–2 m/s - Long-term stability and proven to last 20x longer than conventional sensors under corrosive conditions (MTTF: AVS701 = 9,400 hours vs. conventional = 440 hours) - Robust thin-film ceramic sensing element protected by stainless steel probe head and specialized coating for resistance to moisture and corrosive exposure - Flexible process gas library for automatic gas-specific corrections, ensuring high accuracy even with changing gases - Two analog outputs, RS485 interface, and USB-C interface for maximum flexibility in data transmission and configuration Enclosure: - IP65 protection rating - Polycarbonate or die-cast aluminium - Easy mounting and service - Versatile connection options Outputs: - 2 freely scalable analogue outputs, current / voltage - Error indication according to NAMUR - Modbus RTU - 2 alarm outputs - Configurable via software Sensor control port: - Connector for external pressure probe (optional) - Realtime pressure compensation USB-C service interface: - Configuration, adjustment and firmware update - Short-term power supply via USB - Device status indication via illuminated port Block: Technical Specifications / Features - Air velocity measuring range: 0...2 m/s, 0...15 m/s, 0...40 m/s - Accuracy air velocity: ±0.03 m/s (0.06...2 m/s), ±(0.1 m/s + 1% of mv) (0.15...10 m/s), ±(0.2 m/s + 1% of mv) (0.2...40 m/s) - Temperature measuring range: -40...+140 °C - Accuracy (T): ±0.5 °C - Power supply: 24 V DC ±20% - Protection rating: IP65 / NEMA 4X - Pressure-tight models up to max. 10 bar - 2 freely scalable analogue outputs, current / voltage - RS485 and USB-C interface - Process gas library for automatic gas-specific correction - Stainless steel probe head with ceramic sensing element and specialized coating - Long-term stability and high resistance to corrosive environments