POR (price on request)
of BC 313 hydrophones
used for measurements by immersing into water on the cable
used for measurements by cutting-in to the wall of sealed vessel or pipe
of BC 313 underwater/threaded hydrophones
| SPECIFICATIONS | ||
|---|---|---|
| Designation | BC 313 | |
| Version | underwater | threaded |
| Nominal sensitivity * | 50 µV/Pa 500 µV/Pa 5,000 µV/Pa |
|
| Sensitivity level* (relative to 1V/µPa) | -206 dB -186 dB -166 dB |
|
| Frequency band | 20…20,000 Hz | |
| Maximum value of measured sound pressure range* (as per nominal sensitivity) |
50 kPa 10 kPa 1 kPa |
|
| Limit static line pressure** | 60 MPa | |
| Self-noise*** (as per nominal sensitivity) | 0.2 Pa 0.1 Pa 0.01 Pa |
|
| Supply voltage (bipolar) | ±10…±15 V | |
| Current consumption | 20…30 mA | |
| Output resistance | ||
| Explosion-proof version | — | upon request |
| Casing material | stainless steel | |
| Dimensions (length × casing diameter) | 173 × ⌀23 mm | 171 × ⌀23 mm |
| Coupling thread | — | M20×1.5 |
| Weight (without cable) | ||
| Cable standard length | 10 m | 2 m |
| Maximum cable length | 1,000 m | |
| Cable outer diameter | 6 mm | |
| Cable type | coaxial with PVC coating, central wire, screened, resistive to environment containing sulfuric acid | |
| Cable connection | end-piece with wires | |
| Measurements operation environment | water, air, oil and oil products, natural gas | |
| Operation environment temperature | 0…+60 °C | |
| Environment air temperature | −60…+80 °C | |
*The parameter shall be determined when placing an order. The default parameter is set for the nominal sensitivity of 500 µV/Pa, for special order, the parameter value is set at 50 µV/Pa or 5,000 µV/Pa.
** The limiting hydrostatic pressure is indicated for the receiving element of the hydrophone and can be limited by the technical characteristics of the cable, in the case of immersion studies.
***Self-noise referred to output in the frequency band: from 10 Hz to the band upper limit.
of BC 313 underwater/threaded hydrophones
non-dismantling control
screened sensing element
corrosion-resistant casing
low-noise connection cable
for threaded hydrophones ВС 313
The hydrophones are connected to special mounting seats, adapters, weldolets, etc.
Hex section of the hydrophone connection is used for installation of the hydrophone. It is not recommended to use any other parts of the hydrophone in the course of hydrophone mounting.
In order to maintain hermeticity of the hydrophone you can use additional plate included into the delivery scope (copper gasket). It is not recommended to use any other alternatives (foam tape, plumbing hemp, etc), since it may negatively affect the hermeticity level.
Mounting seat layout
Example of threaded hydrophone installation
of BC 313 underwater/threaded hydrophones
Hydrophone BC 313 are connected to FFT spectrum analyzers ZET 017 over ZET 430 matching device, which provides power supply for the hydrophone, sending output signal from hydrophone to the FFT spectrum analyzer, and also, sending test signals from FFT spectrum analyzer integrated generator to conduct non-dismantle calibration of hydrophones.
of BC 313 underwater/threaded hydrophones
| LABEL | DESIGNATION |
|---|---|
| S+ | Non-inverting output |
| S- | Inverting output |
| +12V | Power input + |
| −12V | Power input − |
| ACT | Electric monitoring (calibration) |
| GND | Transducer screen Common supply wire |
Frequency response of Hydrophone BC 313 is shown in the chart.
of BC 313 underwater/threaded hydrophones
Hydrophone BC 313 is a dynamic pressure transducer with even response curve throughout the complete range of frequencies observed in any homogeneous medium, including air, sea and fresh water; the hydrophones are also intended to address hydroacoustics issues: to measure sound pressure level in liquid media and to observe cavitation processes.
Hydrophone BC 313 uses piezoceramic element as a signal transducer. The integrated amplifier allows transmitting signals via long submarine cables (down to 1,000 m ocean depth).
Hydrophone internal nodes are electrically insulated from the metal casing. Special attention has been paid to signal interference protection. This enables using hydrophones both in air and water reservoirs, where the electric potential of water differs from that of the earth as well as in cases of high electromagnetic field presence.
Hydrophone BC 313 can be used to determine explosion pressure up to 1,000 kPa, pulse duration 2-5 ms (time sensitivity – approximately 0.1 ms).
of BC 313 underwater/threaded hydrophones
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