Posted in | Piezoelectric Sensors

ATK120 Airducer® Ultrasonic Air Transducer for Chemically Harsh Environments

The ultrasonic ATK120 Airducer® Transducer from Airmar reliably delivers non-contact level, flow, distance, proximity and object detection measurement. It operates at 125 kHz and its sensing range is 15 cm to 5 m. The ATK120's rugged one-piece Kynar PVDF housing makes it suitable for the most chemically aggressive environments. 


  • Automation control
  • Obstacle avoidance
  • Food and beverage processing
  • Level measurement
  • Proximity sensing


  • The cylindrical design allows for installation in various applications
  • Rugged one-piece PVDF housing is US FDA compliant


  • 10 KΩ thermistor available for temperature compensation


  • Peak operating frequency: 125 kHz ± 4%
  • Minimum and maximum sensing range*: 15 cm to 5 m
  • Minimum receive sensitivity: −172 dB re 1 V/µPa at best receive frequency
  • Minimum transmit sensitivity: 102 dB re, 1 µPa/V at 1 m at best transmit frequency
  • Minimum parallel resistance: 500 Ω, ±30%
  • Maximum driving voltage: 800 Vpp at 2% duty cycle tone burst
  • Weight: 30 g (1.1 oz.)
  • Typical sensing range: 20 cm to 3 m (8″ to 10′)
  • Free capacitance: 1000 pF ± 20% at 1 kHz
  • Operating temperature: −40 °C to 90 °C (−40 °F to 194 °F)
  • Beamwidth: 10° ± 2° at −3 dB
  • Acoustic window: Kynar® 720
  • Housing material: Kynar® 720

*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

ATK120 Airducer® Transducer

Image Credit: AIRMAR Technology Corporation

Dimensional Drawings

ATK120 Airducer® Transducer

Image Credit: AIRMAR Technology Corporation

Other Equipment by this Supplier

Azthena logo powered by Azthena AI

Your AI Assistant finding answers from trusted AZoM content

Azthena logo with the word Azthena

Your AI Powered Scientific Assistant

Hi, I'm Azthena, you can trust me to find commercial scientific answers from

A few things you need to know before we start. Please read and accept to continue.

  • Use of “Azthena” is subject to the terms and conditions of use as set out by OpenAI.
  • Content provided on any AZoNetwork sites are subject to the site Terms & Conditions and Privacy Policy.
  • Large Language Models can make mistakes. Consider checking important information.

Great. Ask your question.

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.