Product Overview
The BBUA-H2M is a needle-type hydrophone featuring a slender probe with a diameter of approximately Φ1.27 mm. Its compact sensing structure is intended for applications requiring a small underwater acoustic receiving probe.
Sensitivity measurements are available at 100 kHz, 200 kHz, 400 kHz, 700 kHz, 1 MHz, and 2 MHz. The measurements were performed with reference to GB/T 3223—94, the free-field calibration method for underwater acoustic transducers.
Key Features
- Needle-type hydrophone structure
- Approx. Φ1.27 mm probe diameter
- Approx. 80 mm probe length
- Approx. 108 mm overall length
- Approx. Φ6.5 mm body diameter
- Measured sensitivity data at multiple frequencies from 100 kHz to 2 MHz
- Suitable for compact underwater acoustic reception and ultrasonic acoustic-field measurement
Dimensions
| Parameter | Specification |
|---|---|
| Model | BBUA-H2M |
| Probe Diameter | Φ1.27 mm |
| Probe Length | 80 mm |
| Overall Length | 108 mm |
| Body Diameter | Φ6.5 mm |
Measured Sensitivity
| Frequency | Sensitivity |
|---|---|
| 100 kHz | 0.263 µV/Pa |
| 200 kHz | 0.207 µV/Pa |
| 400 kHz | 0.344 µV/Pa |
| 700 kHz | 0.434 µV/Pa |
| 1 MHz | 0.496 µV/Pa |
| 2 MHz | 0.280 µV/Pa |
Test Conditions
| Item | Condition |
|---|---|
| Room Temperature | 24.6 °C |
| Relative Humidity | 59% |
| Water Temperature | 27.5 °C |
| Immersion Depth | 0.200 m |
| Reference Method | GB/T 3223—94, Free-field calibration method for underwater acoustic transducers |
Measurement Uncertainty
| Frequency Range | Measurement Uncertainty |
|---|---|
| 100–700 kHz | U = 29% (k=2) |
| 1–2 MHz | U = 36% (k=2) |
Applications
The BBUA-H2M can be used in underwater acoustic reception and ultrasonic acoustic-field measurement applications where a compact needle-type hydrophone is required.
Note
The 100 kHz–2 MHz designation refers to the frequency range covered by the available measurement report. The source material does not specify continuous operating bandwidth, built-in amplification, supply voltage, maximum operating depth, IP rating, maximum acoustic pressure, cable length, connector type, directionality, or operating temperature. These parameters are therefore not inferred or added.