Level measurement ultrasonic transducer BBDM-40KR12M-B

Overview
The BBDM-40KR12M-B is an air ultrasonic distance transducer with a 40 kHz center frequency and a recommended measurement range of 0.5 to 12 m. It features a narrow half-power beam angle for directed measurements in tanks, vessels and industrial ranging applications, and an IP68 rating for harsh environments.

Key specifications

• Model: BBDM-40KR12M-B
• Center frequency: 40 kHz ±5%
• Recommended range: 0.5 to 12 m
• Half-power beam angle (‑3 dB): 10.1° ±10% (alternative 11.3° ±10%)
• Minimum impedance: 200 Ω ±20%
• Capacitance: 3,200 pF ±20% at 1 kHz
• Operating voltage: Peak below 1,500 Vpp
• Operating temperature: -40 to +80 °C
• Pressure rating: Up to 3 kgf / 0.3 MPa
• Protection rating: IP68
• Weight: 1,160 g ±5% (with 10 m ±0.3 m cable)
• Mounting: See dimensional drawing

Beam configuration options

• 10.1° ±10%
• 11.3° ±10%

Selection and installation guidance
Choose the transducer based on the operating medium and temperature, required measuring distance or acoustic path, target size and surface condition, available mounting space and interface dimensions, and operating pressure. Ensure drive and receive electronics are matched to the transducer characteristics, and define cable length and connection method for the installation.

Typical applications

• Tank and vessel level measurement
• Industrial equipment ranging and position sensing
• Vehicle and machinery collision avoidance
• Security and area monitoring