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Wireless Ultrasonic Sensors

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      • Weighing Solutions
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        • Dairy
        • Snackfoods
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Home > Food & Dairy > Data Acquisition & Logging > Wireless Ultrasonic Sensors
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General Description

ALTA Ultrasonic Sensors can be used in a variety of applications for measuring distances between the sensor and objects in its path. ALTA ultrasonic sensors are imperviousness to target surface and color, and feature autocalibration algorithms which allow them to adapt to variable environmental conditions and compensate for temperature and humidity effects. The ultrasonic sensors can also be calibrated through the iMonnit software for greater accuracy in distance measurements.
• Measures distance between the sensor and objects in its path
• Measurement resolution of 1 centimeter
• Auto-calibration algorithms allow sensor to adapt to variable environmental conditions

Principle of Operation

The Ultrasonic Sensor sends out a high-frequency sound pulse and then times how long it takes for the echo of the sound to reflect back. The sensor has 2 openings on its front. One opening transmits ultrasonic waves, (like a tiny speaker), the other receives them, (like a tiny microphone). The ultrasonic sensor uses the speed of sound to and time difference between sending and receiving the sound pulse to determine the distance to an object. It will take readings at set intervals and report the data back to the iMonnit software portal where the information is processed to display distance and alert users if a defined condition is met. All sensor data is then stored for historical analysis.

Features of Monnit ALTA Sensors
• Wireless range of 1,200+ feet through 12+ walls *
• Frequency-Hopping Spread Spectrum (FHSS)
• Improved interference immunity
• Improved power management for longer battery life **(12+ years on AA batteries)
• Encrypt-RF® Security (Diffie-Hellman Key Exchange+AES-128 CBC for sensor data messages)
• Onboard data memory stores up to 512 readings per sensor:
– 10-minute heartbeats = 3.5 days
– 2-hour heartbeats = 42 days
• Over-the-air updates (future proof)
• Free iMonnit basic online wireless sensor monitoring and notification system to configure sensors, view data and set alerts via SMS text and email
*Actual range may vary depending on environment.
**Battery life is determined by sensor reporting frequency and other variables. Other power options are also available.

ALTA Commercial Ultrasonic Sensor | Technical Specifications
Supply voltage 2.0–3.8 VDC (3.0–3.8 VDC using power supply) *
Current consumption 0.2 µA (sleep mode), 0.7 µA (RTC sleep), 570 µA (MCU idle),
2.5 mA (MCU active), 5.5 mA (radio RX mode), 22.6 mA
(radio TX mode)
Operating temperature range (board circuitry and batteries) -18°C to 55°C (0°F to 130°F) using alkaline
-40°C to 85°C (-40°F to 185°F) using lithium **
Optimal battery temperature range (AA) +10°C to +50°C (+50°F to +122°F)
Sensor resolution 1 cm
Minimum Measurement Distance 10 cm
Maximum Measurement Distance 750 cm
Sensor Accuracy 5% FS (can be calibrated for further accuracy)
Integrated memory Up to 512 sensor messages
Wireless range 1,200+ ft non-line-of-sight
Security Encrypt-RF® (256-bit key exchange and AES-128 CTR)
Weight 3.7 ounces

 

ALTA Industrial Wireless Ultrasonic Sensor | Technical Specifications

Supply voltage 2.0–3.8 VDC (3.0–3.8 VDC using power supply) *
Current consumption 0.2 µA (sleep mode), 0.7 µA (RTC sleep), 570 µA (MCU idle),
2.5 mA (MCU active), 5.5 mA (radio RX mode), 22.6 mA (radio
TX mode)
Operating temperature range (board circuitry and battery) -40°C to +85°C  (-40°F to +185°F) **
Included battery Max temperature range -40° to +85°C  (-40° to +185°F)
Capacity 1500 mAh
Optional solar feature Solar panel 5VDC/30mA  (53mm x 30mm)
Charging temperature range 0° to 45°C (32° to 113°F)
Max temperature range -20° to 60°C (-4° to 140°F)
Included rechargeable battery 600 mAh/>2000 charge cycles (80% of initial capacity)
Solar efficiency Optimized for high and low-light operation ***
Charging efficiency 40% ****
Luminous sustainability 250 LUX ****
Sensor resolution 1 cm
Minimum measurement distance 20 cm
Maximum measurement distance 750 cm
Sensor Accuracy +/- 1% full scale
Integrated memory Up to 512 sensor messages
Wireless range 1,200+ ft non-line-of-sight
Security Encrypt-RF® (256-bit key exchange and AES-128 CTR)
Weight 4.7 ounces
Enclosure rating NEMA 1, 2, 4, 4x, 12 and 13 rated, sealed and weather proof
UL rating UL Listed to UL508-4x specifications (File E194432)

Example Interfacing

• Liquid Level Detection
• Object/Vehicle Detection
• Inventory Status (based on distance measurement)
• And much more

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