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Chelsea Technologies Group manufacture a range of underwater acoustic hydrophones for receiving over a wide frequency range. Some of these hydrophone / receiver acoustic transducers are listed below.

CTG0691 & CTG708 1Hz-150kHz OmniSense range of spherical hydrophones 

 CTG0691 & CTG708  OmniSense 1Hz-150kHz Spherical hydrophones 

CTG0099  0.5Hz-3kHz Low Frequency Hydrophone 

 CTG0099  0.5Hz-3kHz General Hydrophone 

CTG0752 1Hz-10kHz General Hydrophone   

 CTG0752 1Hz-10kHz General Hydrophone 

CTG1339 1kHz-20kHz Flexural Disc Transducer   

 CTG1339 1kHz-20kHz General Hydrophone 

CTG0756 1kHz-20kHz Multi-purpose Hydrophone   

CTG0756 1kHz-20kHz Multi-purpose Hydrophone 

CTG0791 10Hz-150kHz Hydrophone with Pre-amp

 CTG0791 10Hz-150kHz Hydrophone 
with Pre-amp

CTG1308 10Hz-200kHz Hydrophone with Pre-amp   

 CTG1308 10Hz-200kHz Hydrophone 
with Pre-amp 

CTG1297 10Hz-200kHz Hydrophone with Pre-amp  

 CTG1297 10Hz-200kHz Hydrophone 
with Pre-amp

CTG0811-0012 0.3Hz-100kHz Hydrophone with Pre-amp  

 CTG0811-0012 0.3Hz-100kHz Hydrophone with Pre-amp

Acceleration Cancelling Hydrophone       Monitor Hydrophone         Low Frequency Hydrophone

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If you can't find the exact underwater hydrophone you are looking for please email your requirements to us. 


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OmniSense: 1kHz - 150kHz Spherical Hydrophones (CTG691 & CTG708)

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OmniSense is the Chelsea Technologies Group range of industry standard, high quality, high performance spherical hydrophones. 

The hydrophones offer a wide range of operational frequencies and sensitivities - to suit a wide range of tasks. These spherical hydrophone transducers are highly reliable and come in a protective, durable polyurethane coating.

The OmniSense range is part of a family of hydrophone transducers which cover a wide spectrum of acoustic responses but address varying needs. Whatever the application, Chelsea Technologies Group has a hydrophone to meet your demands.

 OmniSense: 1Hz - 150kHz Spherical Hydrophones
Datasheet (CTG0691 OmniSense 115,000)
Datasheet (CTG0708 OmniSense 78,000)

 Applications

  • Monitor hydrophone

  • Acoustic reference standard

  • Marine mammal audio sensor

  • Air gun & bloomer monitor

 Advantages

  • Broadband operation

  • Low noise performance

  • Omni-Directional response

  • Durable & Reliable

 

OmniSense 115,000

OmniSense  78,000

Order Code

CTG0691

CTG0708

Nominal Resonant Frequency

125kHz

78kHz

Bandwidth

20kHz

12kHz

Transmit Sensitivity

151dB re 1µPa/V@1m @105kHz

-

Receive Sensitivity

-203 dB re 1V/µPa @135kHz

-202 dB re 1V/µPa @10kHz

Voltage Output

0.56 x10-10 Vrms for 1µPa

0.8 x10-10 Vrms for 1µPa

Useable Frequency Range

1-150 kHz

1-150 kHz

Horizontal Beam Pattern

Omni directional ± 1 dB

Omni directional ± 1 dB

Capacitance

10 nF

8 nF

Maximum Input Voltage

1000 Vrms Affected by connector

1000 Vrms  

Maximum Input Power

14 W

32  W

Maximum Acoustic Input Level

182 dB re 1µPa @1m

186 dB re 1µPa @1m

Dimensions

25 diameter mm 

28 diameter mm 

Operating Depth

500 m

500 m

Cable/ Connector/ Mounting

5m/CS/None CS – customer specified.  Specify cable, connector and calibration requirements

 . .(top) 

General Hydrophone (CTG0099)

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Chelsea Technologies Group produces a large range of standard, calibrated hydrophone transducers, catering for a wide range of users. The CTG099 is a high quality, low frequency hydrophone transducer. Originally designed for  mounting in towed arrays, this hydrophone is highly versatile and has been successfully used as a simple and economic method of leak detection in water mains. 

Low Frequency Hydrophone
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Options 

Applications

  • a high sensitivity/medium capacitance version which is ideal for short cable runs (CTG099-01); 

  • a medium sensitivity/high capacitance offering the best long cable run drive opportunities (CTG099-05).
  • Acoustic reference standard
  • Marine mammal audio sensor
  • Air gun & bomber monitor
  • Towed Arrays

Advantages

The CTG099 is one of a family of hydrophones that cover the spectrum of acoustic frequencies and offer a wide range of capabilities and accuracies to meet the demands of every acoustic monitor situation.

Datasheet (CTG0099)

  • Broadband operation
  • Low noise performance
  • Omni-directional response

 

Order Number

CTG0099-0001

CTG0099-0005

 

Nominal Resonant Frequency

85

85

Hz

Bandwidth

27

27

Hz

Transmit Sensitivity

-

- 

dB re 1µPa/V@1m @  kHz

Receive Sensitivity

-197

-203

dB re 1V/µPa @10kHz

Voltage Output

1.4 

0.7 

x10-10 Vrms for 1µPa

Useable Frequency Range

0.0005-20

0.0005-20

kHz

Horizontal Beam Pattern

Omni directional

Omni directional

± 1 dB

Vertical Beam Pattern

Hemispherical

Hemispherical

± 1 dB

Capacitance

3.5

14

nF

Maximum Input Voltage

1000

1000 

Vrms

Maximum Input Power

43

43

W

Maximum Acoustic Input Level

187

187

dB re 1µPa

Dimensions

46 / 17 /

46 / 17 /

length/diameter/       mm 

Operating Depth

1000

1000

m

Cable/ Connector/ Mounting

CS/CS/None

CS/CS/None

CS – customer specify cable, connector and calibration requirements

  .(top) 

General Hydrophone (CTG0752)

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The CTG0752 hydrophone is the solution to high precision sensing in demanding environments where acceleration canceling is important. The CTG0752 receiver is a cylindrical shaped hydrophone, ideal for use in towed arrays and Seismic streamers, or whenever low frequency, mechanical vibration can be expected.
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Datasheet (CTG0752)

Applications

  • High precision sensing
  • Air gun & boomer monitor
  • Acceleration canceling hydrophone
  • Towed arrays
  • Seismic streamers

Advantages

  • Broadband operation
  • Low noise performance
  • Omni-directional response
  • High precision

 

A thick walled cylindrical acoustic transducer is employed to improve basic strength and reduce the hydrophone's sensitivity variation with depth. The ceramic hydrophone design provides superior acceleration cancelling performance. With a track record of proven field use in both commercial and military environments, the CTG0752 hydrophone offers exceptional reliability and performance.

Order Number

CTG0752

Nominal Resonant Frequency

 54kHz

Bandwidth

-

Acceleration Sensitivity

-60dB V/g

Receive Sensitivity

-204dB re 1V/µPa     @10kHz              

Voltage Output

0.9 x 10-10 Vrms for 1µPa

Useable Frequency Range

1-10 kHz

Horizontal Beam Pattern

Omni directional ± 1 dB

Vertical Beam Pattern

-

Capacitance

2.5 nF

Maximum Input Voltage

1000 Vrms

Maximum Input Power

21W

Maximum Acoustic 
Input Level

184 dB re 1µPa @1m

Dimensions

35.4 / 21.5 / 14 mm  length/diameter 

Operating Depth

2000m

Cable/ Connector/ Mounting

Specify cable, connector and 
calibration requirements

(top) 

General Hydrophone (CTG1339)

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The CTG1339 hydrophone is a versatile and rugged acoustic monitor transducer, designed for use in arrays. The hydrophone is usable from 1kHz up to 20kHz and is useful as a versatile, multi-purpose monitoring transducer. The hydrophone is a polyurethane encased ceramic with flying leads as standard. Further lengths of cable and a range of connectors can also be supplied.
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Flexural Disc Transducer (CTG1339)

Applications

  • Acoustic reference standard

  • Ideal for use in arrays

  • Air gun & boomer monitor

  • Towed arrays

  • Seismic streamers

Advantages

  • Very low cost

  • Compact

  • High performance

Datasheet  (CTG1339)

Order Number

CTG1339

Nominal Resonant Frequency

 10 kHz

Bandwidth

-

Receive Sensitivity

-197  dB re 1V/µPa @10kHz

Voltage Output

1.4 x10-10 Vrms for 1µPa

Useable Frequency Range

1-10 kHz

Horizontal Beam Pattern

Omni directional ± 1 dB

Vertical Beam Pattern

-

Capacitance

3.3 nF

Maximum Input Voltage

250 Vrms

Maximum Input Power

12 W

Maximum Acoustic 
Input Level

182 dB re 1µPa @1m

Dimensions

10.6/28/  mm  length/diameter 

Operating Depth

250 m

Cable/ Connector/ Mounting

Specify cable, connector and 
calibration requirements

(top) 

Multi-purpose Hydrophone (CTG0756)

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The CTG0756 hydrophone is a versatile and rugged acoustic monitor transducer, designed to be easily mounted. The monitor hydrophone is usable from 1kHz up to 20kHz and is useful as a versatile, multi-purpose monitoring transducer.

The hydrophone comes as polyurethane encased ceramic with 5m of cable as standard. Further lengths of cable and a range of connectors can also be supplied.  

The hydrophone can be supplied in two versions:  

Datasheet (CTG0756)

  • High sensitivity/medium capacitance version ideal for short cable runs (CTG0756-10).

  • Medium sensitivity/high capacitance version ideal for longer cable runs (CTG0756-01).

Applications

  • Acoustic reference standard

  • Marine mammal audio sensor

  • Air gun & boomer monitor

Advantages

  • Broadband operation

  • Low noise performance

  • Omni-directional response

Order Number

CTG0756

Nominal Resonant Frequency

 81 kHz

Bandwidth

-

Transmit Sensitivity

- dB re 1µPa/V@1m @  kHz

Receive Sensitivity

-203 dB re 1V/µPa @10kHz

Voltage Output

0.7 x10-10 Vrms for 1µPa

Useable Frequency Range

1-20 kHz

Horizontal Beam Pattern

Omni directional ± 1 dB

Vertical Beam Pattern

-

Capacitance

14 nF