Air Velocity
General Description
ALTA® Wireless Air Velocity Sensors measure the difference in pressure between two ports to calculate the air speed flowing in a system and temperature.
Key Features
Measurement Range: -50 m/s to 50 m/s
Accuracy: +/- 0.5 m/s
Resolution: 0.1 m/s
Automatic temperature compensation
Altitude compensated available (manually set)
Configurable thresholds for critical condition monitoring
Principles of Operation
The ALTA Wireless Air Velocity Sensor measures the rate at which air flows through a system based on a user-configurable time interval or Heartbeat. The sensor measures the air pressure difference between two ports and temperature. Combining this data with and altitude setting, the sensor determines at what rate air is flowing through the system. This measurement is then sent to the gateway, making the data available in iMonnit or another approved data service.
Features of Monnit ALTA Sensors
Wireless range of 2,000+ feet through 18+ walls1
Frequency-Hopping Spread Spectrum (FHSS)
Best-in-class interference immunity
Best-in-class power management for longer battery life2
Encrypt-RF® Security (Diffie-Hellman Key Exchange + Advanced Encryption Standard (AES)-128 Cipher Block Chaining (CBC) for sensor data messages)
Sensor logs 2000 to 4000 readings if the gateway connection is lost (non-volatile flash, persists through power cycling):
10-minute Heartbeats = ~ 22 days
2-hour Heartbeats = ~ 266 days
Automatic over-the-air updates to sensor firmware (future-proof)
Free iMonnit Basic Online Wireless Sensor Monitoring and Notification System to configure sensors, view data, and send alerts via SMS text, email, and voice call
1 Actual range may vary depending on the environment and gateway.
2 Battery life is determined by the sensor reporting frequency and other variables. Other power options are also available
