Ultrasonic transducers for air, liquid and underwater measurement
The BBDM series brings together 25 ultrasonic transducer models for equipment used in industrial automation, robotics, vehicle detection, level monitoring and underwater measurement. The range covers air distance, proximity and obstacle detection, underwater depth and target detection, and externally mounted liquid-level measurement.
BBDM transducers are sensing components intended for integration with suitable drive, receive and signal-processing electronics. Share your measurement medium, required range, target, installation conditions and expected quantity, and our team will shortlist suitable models for evaluation.
Need a model recommendation for a current project? Send us your measurement requirements.
Application examples
- Industrial automation: position sensing, distance measurement, proximity switching, object detection, automated counting and double-sheet detection.
- Robotics and mobile equipment: obstacle avoidance, proximity detection, target separation and ranging in confined spaces.
- Vehicle and traffic equipment: vehicle detection, traffic monitoring, parking assistance and outdoor distance sensing.
- Liquid and material level monitoring: non-contact level measurement in tanks, vessels and industrial equipment, including level control and alarm systems.
- Measurement from outside a vessel: liquid-level sensing through a tank wall without direct contact between the transducer and the measured liquid.
- Outdoor and low-temperature use: outdoor industrial equipment, cold-storage facilities and ranging systems requiring temperature compensation.
- Depth and underwater ranging: depth, distance and underwater-target detection in rivers, lakes, pools, tanks and other bodies of water.
- Underwater detection: underwater positioning, obstacle detection, fish detection, and single- or dual-frequency depth systems requiring different beam coverage.
- Industrial liquid measurement: distance measurement, liquid-interface detection and sludge-interface detection in industrial liquid environments.
BBDM model comparison
Compare models by measurement medium, range, blind zone, beam angle, construction and mounting requirements. Once suitable candidates are identified, our team can support sample testing and technical evaluation.
Air distance, level and proximity measurement
| Model | Center frequency | Reference detection range | Blind zone | Beam angle | Protection | Product details |
|---|---|---|---|---|---|---|
| BBDM-14KR45M | 14 kHz ±2 kHz | 1–45 m | <1 m | 15° ±2° | IP65 | View |
| BBDM-22KR30M | 22 kHz ±2 kHz | 0.8–30 m | <0.8 m | 15° ±2° | IP65 | View |
| BBDM-30KR20M | 30 kHz ±2 kHz | 0.6–20 m | <0.6 m | 14° ±2° | IP65 | View |
| BBDM-40KR12M | 40 kHz ±2 kHz | 0.35–12 m | <0.35 m or <0.4 m, depending on version | 12°–15° | IP65 or IP66 | View |
| BBDM-50KR8M | 50 kHz ±2 kHz | 0.3–8 m | <0.3 m | 12° ±2° or 14° ±2° | IP65 | View |
| BBDM-50KR8MLT | 50 kHz | 0.3–8 m | <0.3 m | 12° ±2° | IP67 | View |
| BBDM-75KR6M | 75 kHz ±2 kHz | 0.25–6 m | <0.25 m | 14° ±2° | IP65 | View |
| BBDM-80KR6M | 80 kHz | 0.25–6 m | <0.25 m | 7° ±2° or 12° ±2° | IP65 | View |
| BBDM-112KR4M | 112 kHz ±4% | 0.2–4 m | <0.2 m | 14° ±2° | IP65 | View |
| BBDM-125KR3M | 125 kHz | 0.2–3 m | <0.2 m | 14° ±2° | IP65 | View |
| BBDM-180KR2M | 180 kHz ±4% | 0.1–2 m | <0.1 m | 7° ±1° | IP65 | View |
| BBDM-200KR2M | 200 kHz | 0.1–2 m | <0.1 m | 7° ±2° or 14° ±2° | IP65 | View |
| BBDM-300KR0P5M | 300 kHz | 0.1–0.5 m | <0.1 m | 7° or 9° | IP65 | View |
| BBDM-400KR0P3M | 400 kHz | 0.06–0.3 m | <0.06 m | 7° ±2° | IP65 | View |
Compact waterproof and open-type air sensing
| Model | Center frequency | Beam | Construction and main options | Product details |
|---|---|---|---|---|
| BBDM-40K | 40 kHz ±1 kHz | 30°–80°, depending on configuration | Φ14, Φ16, Φ18 and Φ25 mm waterproof packages; transmitter, receiver or dual-use versions depending on configuration | View |
| BBDM-40K-OPEN | 40 kHz ±1 kHz | Φ10/12 mm: 80° ±15°; Φ14 mm: 90° ±15° horizontal and 70° ±15° vertical | Φ10, Φ12 and Φ14 mm open-type packages; separate transmitter or receiver versions | View |
| BBDM-58KR3M | 58 kHz ±1 kHz | 70° horizontal; 30° ±15° vertical | 0.2–3 m reference reflection range; waterproof construction; transmit/receive compatible; 10 mm reference resolution | View |
Underwater depth, ranging and target detection
| Model | Center frequency | Beam angle | Main specifications | Product details |
|---|---|---|---|---|
| BBDM-40K-UW | 40 kHz ±2 kHz | 50° | 50–200 W; G1″ thread; Φ65 × 86 mm | View |
| BBDM-200K-UW | 200 kHz ±4 kHz | 14° ±1° | 20 W; ABS housing; fixed 6 m cable | View |
| BBDM-400K-UW | 400 kHz ±4% | 5° | IP68 stainless-steel housing; G1″ thread; thermistor wiring | View |
| BBDM-500K-UW | 500 kHz ±3% | 6° | IP68; 1.6 MPa maximum working pressure; M16×1 thread; Φ35 mm | View |
| BBDM-1M-UW | 1 MHz ±5% | 6° | Approx. 50 mm blind zone; IP68; 1.6 MPa maximum working pressure; 0–95°C operating temperature | View |
| BBDM-40K200KR200M-UW | 40 kHz ±1 kHz / 200 kHz ±3 kHz | 15° / 5° | Specified depth >200 m; G1″ thread; Φ65 × 86 mm; temperature-sensor wiring | View |
External and dedicated liquid-level measurement
| Model | Center frequency | Measurement range | Blind zone | Beam angle | Construction and protection | Product details |
|---|---|---|---|---|---|---|
| BBDM-2MR2M | 2 MHz | 0.015–2 m | <15 mm | 3° | External mount; IP67 aluminum housing; Φ36 × 14.6 mm; temperature-signal leads | View |
| BBDM-500KR5M | 500 kHz | 0.02–5 m | <20 mm | 8° | IP67 aluminum housing; Φ50 × 20 mm; temperature-signal leads | View |
Actual detection range and measurement performance depend on the medium, target size and surface, mounting, drive and receive electronics, temperature and nearby reflections. Sample evaluation under the actual operating conditions is recommended before the design is finalized.
Information for model selection
For an efficient technical review, please provide the available project requirements below. Items that have not yet been defined can be marked as TBD.
- Application and measurement medium: air, liquid, underwater use or measurement through a vessel wall
- Minimum and maximum measurement distance, including any blind-zone requirement
- Target size, shape and surface, plus nearby walls, pipes or other possible reflectors
- Required beam coverage and available installation space
- Operating temperature, pressure and ingress-protection requirement
- Available drive, receive and signal-processing electronics, or support required for the interface
- Housing size, thread or flange, cable and connector requirements
- Prototype and expected production quantity
Shortlist the BBDM models for your application
Send us the application conditions and the parameters already defined for your project. We will compare the relevant BBDM models and recommend the most suitable options for sample evaluation. Discuss your application with our team.