Level measurement ultrasonic transducer BBDM-30KR12M

for obstacle detection

Overview
The BBDM-30KR12M is an air-coupled ultrasonic distance transducer with a 30 kHz center frequency and a recommended range of 0.5 to 12 m. It is suited for tank and vessel level measurement, industrial equipment ranging, vehicle and machinery collision avoidance, security systems and area monitoring. The specified -3 dB half-power angle is 23° ±10%, which creates a broad field and makes surrounding geometry a key factor in measurement design.

Technical specifications (table)
Parameter — Specification
Model — BBDM-30KR12M
Center frequency — 30 kHz ±5%
Recommended range — 0.5–12 m
Minimum impedance — 970 ohm ±20%
Capacitance — 3,200 pF ±20% at 1 kHz
Operating voltage — Peak voltage < 1,500 Vpp
Operating temperature — -40 to +80 °C
Pressure rating — Up to 3 kgf / 0.3 MPa
Beam characteristic — -3 dB half-power angle: 23° ±10%
Protection rating — IP68

Managing reflections inside a broad field
Over a 12 m path the 23° field can include vessel walls, braces, fill pipes, guards or adjacent equipment. These surfaces may produce stronger or earlier returns than the intended target at certain positions across its travel; plan mounting location and alignment accordingly.

Electrical matching
Design electronics to match the 970 Ω minimum impedance, accommodate 3,200 pF capacitance, and respect the peak-voltage limit to ensure reliable drive and receive performance.

Caractéristiques / Spécifications techniques

• Model: BBDM-30KR12M
• Center frequency: 30 kHz ±5%
• Recommended range: 0.5–12 m
• Minimum impedance: 970 Ω ±20%
• Capacitance: 3,200 pF ±20% at 1 kHz
• Operating voltage: Peak voltage < 1,500 Vpp
• Operating temperature: -40 to +80 °C
• Pressure rating: Up to 3 kgf / 0.3 MPa
• Beam characteristic: -3 dB half-power angle: 23° ±10%
• Protection rating: IP68