AT120 Airducer® Ultrasonic Air Transducer for Multiple Applications

The ultrasonic AT120 Airducer® Transducer from Airmar reliably delivers unparalleled sensing performance with level, flow, distance, proximity and object detection measurement applications. Itoperates at 125 kHz and has a sensing range from 15 cm to 7 m. The AT120 includes rugged sealed construction, and PVDF housing is available for more chemically aggressive environments.

Applications

Automation control

Robotics

Proximity

Level measurement

Obstacle avoidance

AIRMAR AT120 Ultrasonic TransducerPlay

Video Credit: AIRMAR Technology Corporation

Features

The cylindrical design enables installation in different applications

Rugged sealed construction

Options

10 KΩ thermistor available for temperature compensation

Available in PVDF housing for use in chemically aggressive environments

Specifications

Peak operating frequency: 125 kHz ± 4%

Minimum receive sensitivity: −169 dB re, 1 V/µPa at the best receive frequency

Minimum transmit sensitivity: 107 dB re, 1 µPa/V at 1 m at best transmit frequency

Minimum and maximum sensing range^*: 15 cm to 7 m

Minimum parallel resistance: 420 Ω, ±30%

Operating temperature: −40 to 90 °C (−40 to 194 °F)

Weight: 20 g (0.7 oz)

Typical sensing range: 20 cm to 3 m (8″ to 10′)

Housing material: Glass-filled polyester

Beamwidth: 12° ± 2° at −3 dB

Free capacitance: 1000 pF ± 20% at 1 kHz

Maximum driving voltage: 800 V_pp at 2% duty cycle tone burst

Acoustic window: Glass reinforced epoxy

^*Pulse-Echo Mode: The best-case situations are the minimum and maximum ranges. Depending on the driving circuitry and signal processing, the actual range may vary.

Acoustical Data

Image Credit: AIRMAR Technology Corporation

Dimensional Drawings

Image Credit: AIRMAR Technology Corporation