*mydirectindustry

AR41

Product catalog summary

Specifications
The AR41 Ultrasonic Air Transducer operates best at a frequency of 41 kHz with a tolerance of ±4%. It has a minimum transmit sensitivity of 110 dB re 1μPa/V at 1 m and a minimum receive sensitivity of -160 dB re 1V/μPa. The sensing range varies from 30 cm to 20 m, with a typical range of 35 cm to 15 m. The transducer has a beamwidth of 14° ±2° and can handle a maximum driving voltage of 1,800 Vpp. It operates within a temperature range of -40°C to 90°C and weighs 560 g. The housing is made of glass-filled polyester, and the acoustic window is glass-reinforced epoxy.

Applications
The transducer is suitable for level measurement, proximity sensing, obstacle avoidance, traffic control, and flow measurement.

Features
It features a rugged sealed construction and a housing design that accommodates transceiver and signal processing electronics. It also includes standard internal shielding.

Options
Customizable cable lengths, mounting caps in BSP, NPT, or M32 threads, and PVDF housing for chemically aggressive environments are available. A 10 KΩ thermistor can be added for temperature compensation.

Directivity Pattern and Impedance
The directivity pattern shows a range of -10 dB to -40 dB at angles of 60° to 90°. Impedance magnitude and phase vary with frequency, with significant changes observed between 34 kHz and 46 kHz.

Transmit & Receive Voltage Response
The transducer's voltage response is detailed, showing variations in TVR and RVR across frequencies from 34 kHz to 46 kHz.

Figure of Merit
The sum of TVR and RVR is plotted, indicating performance across the frequency range.

Additional Information
The document notes that specifications are subject to change and highlights the transducer's suitability for hazardous locations. Airmar emphasizes the high performance and reliability of their American-made ultrasonic transducers.

Catalog excerpts

Ultrasonic Air Transducer Technical Data Sheet Airmar ultrasonic transducers deliver the highest level of performance in the most challenging environments and they are the key component for our customers success and their applications. Our precision tuned air-ranging transducers are tried and true performers, even when used for difficult tasks. American-made from the highest quality materials, Airmar’s ultrasonic transducers provide reliable, long-lasting excellence to any measurement system. 41 kHz AIRDUCER® Ultrasonic Transducer Applications • Level measurement • Proximity • Obstacle avoidance • Traffic control • Flow measurement Best Operating Frequency: 41 kHz, ±4% Minimum Transmit Sensitivity at Best Transmit Frequency: 110 dB re 1μPa/V at 1 m Minimum Receive Sensitivity at Best Receive Frequency: -160 dB re 1V/μPa Minimum Parallel Resistance: 150 Ω, ±30% Minimum and Maximum Sensing Range*: 30 cm to 20 m Typical Sensing Range: 35 cm to 15 m Free (1 kHz) Capacitance: 5,000 pF, ±20% pF Beamwidth (@ -3 dB Full Angle): 14°, ±2° Maximum Driving Voltage (2% Duty Cycle Tone Burst): 1,800 Vpp Operating Temperature: -40°C to 90°C Weight: 560 g Housing Material: Glass filled polyester Acoustic Window: Glass reinforced epoxy Features • Rugged sealed construction • Housing design will accommodate transceiver and signal processing electronics • Standard internal shielding Options • Cable length can be customized • Mounting cap available in BSP, NPT, or M32 threads • Available in PVDF housing for use in chemically aggressive • 10 KΩ thermistor available for temperature compensation *Pulse-Echo Mode: Minimum and maximum ranges are best case scenarios. Actual range may vary, depending on drive circuitry and signal processing. Note: Optimally, performance measurements should be taken when the t ransducer reaches a steady state. Directivity Pattern Thread Choices: 1" tapered BSP x 0.75" long 1" NPT x 0.94" long (ref.) M32-1.5 x 0.75" long Transmit & Receive Voltage Response May be shown with optional equipment. Impedance Magnitude & Phase 10k Additional Resources Theory of Operations Applying Ultrasonic Technology Frequency in kHz Magnitude Phase Airmar’s T1 Developer’s Transceiver Module can be used for evaluation of AIRDUCER® Transducers. Frequency in kHz ©Airmar Technology Corporation AR41_rT 04/11/24 As Airmar constantly improves its products, all specifications are subject to change without notice. All specifications typical at 22°C. Factory Mutual approved models suitable for: Class I, Division 1, Hazardous Locations. AIRDUCER® is a registered trademark of Airmar Technology Corporation. AMPHENOL is a registered trademark of Amphenol Corporation. Other company or product names mentioned in this document may be trademarks or registered trademarks of their

Open the catalog to page 1