Ultrasonic Ranging
General Description
The ALTA® Wireless Ultrasonic Sensor can be used in various applications to measure distances between the sensor and objects in its path. The sensor features autocalibration algorithms which allow it to adapt to variable environmental conditions and compensate for temperature and humidity effects.
Key Features
Measures distance between the sensor and objects in its path.
Resolution: 1 centimeter
Accuracy:
- Commercial: ± 5% FS
- Industrial: ± 1% FS
Auto-calibration algorithms allow sensor to adapt to variable environmental conditions
Configurable thresholds for critical condition monitoring
Industrial sensor comes standard with a detachable lead and two options for mounting hardware
Principles of Operation
The ALTA Wireless Ultrasonic Sensor sends a high-frequency sound pulse to measure distance based on a user-configurable time interval or Heartbeat. On every Heartbeat, the sensor produces a high-frequency sound pulse. The sensor uses the speed of sound and the time difference between sending and receiving the sound pulse to determine the distance to an object. 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
