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This index contains all of the projectors / transmitters, hydrophones, and hydrophones with pre-amplifiers which are on this site. If you would prefer to browse in frequency order see the hydrophones, or projectors pages. 

Browse this index of acoustic transducers to find the device you require.
Browse this index of acoustic transducers to find the device you require.

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 CTG RANGE OF HYDROPHONES 

OmniSense 115,000 1Hz-150kH Spherical Hydrophone  (CTG0691)

(CTG0691)

OmniSense 115,000 1Hz-150kHz Spherical Hydrophone 

OmniSense 78,000 1Hz-90kHz Spherical Hydrophone (CTG0708)

(CTG0708)

OmniSense 78,000 1Hz-90kHz Spherical Hydrophone

Low Frequency Hydrophone (CTG0099) 

(CTG0099) 

General Hydrophone

General Hydrophone (CTG0752)  

(CTG0752)  

General Hydrophone

Flexural Disc Transducer (CTG1339)  

(CTG1339)  

General Hydrophone

Multi-purpose Hydrophone  (CTG0756)

(CTG0756)

Multi-purpose Hydrophone 

Hydrophone with Pre-amp 10Hz-150kHz H (CTG0791)

(CTG0791)

Hydrophone with Pre-amp 10Hz-150kHz  

Hydrophone with Pre-amp - 10Hz-200kHz (CTG 1308)

(CTG 1308)

Hydrophone with Pre-amp - 10Hz-200kHz 

Hydrophone with Pre-amp - 10-200kHz (CTG 1297)

(CTG 1297)

Hydrophone with Pre-amp - 10-200kHz

Hydrophone with Pre-amp - 0.3-100 kHz (CTG 811-0012)

(CTG 0811-0012)

Hydrophone with Pre-amp - 0.3-100 kHz

 .

 CTG RANGE OF PROJECTORS 

Medium Frequency Wideband Projector (CTG 1273)

(CTG 1273)

Medium Frequency Wideband Projector 

OmniSource Spherical Projector (CTG 1253)

(CTG 1253)

OmniSource Spherical Projector

Dual Projector (CTG 0615)

(CTG 0615)

Dual Projector

Tuned High Power Broadband Projector (CTG811-0259)

(CTG 0811-0259)

Tuned High Power Broadband Projector

Tuned High Power Broadband Projector (CTG 811-0260)

(CTG 0811-0260)

Tuned High Power Broadband Projector

Tuned High Power Broadband Projector (CTG811-0261)  

(CTG8011-0261) 

Tuned High Power Broadband Projector

SonoFlex 2400 Hz Projector (CTG0311) 

(CTG 0311) 

SonoFlex 2400 Hz Projector

SonoFlex 1900 Hz Projector (CTG0673)  

(CTG 0673) 

SonoFlex 1900 Hz Projector

SonoFlex 1600 Hz Projector (CTG 1162)

(CTG 1162-0001)

SonoFlex 1600 Hz Projector

SonoFlex 1350 Hz Projector (CTG 1181) 

(CTG 1181-0002)

SonoFlex 1350 Hz Projector

SonoFlex 850 Hz Projector (CTG0241)  

(CTG 0241) 

SonoFlex 850 Hz Projector

.

 CTG RANGE OF ECHO SOUNDERS & HEMISPHERICAL TRANSDUCERS 

Small Boat Echo Sounder Transducer (CTG0703)  

(CTG 0703)  

Small Boat Echo Sounder Transducer

Down Hole Echo Sounder Transducer (1255) 

(CTG 1255)

Down Hole Echo Sounder Transducer

Enhanced Performance Communications Transducer - (CTG 1330)

(CTG 1330)

Communications 

(CTG0052) Communications

(CTG 0052)

Communications 

.

SIDESCAN SONAR 

(CTG 1356) Sidescan Sonar  

(CTG 1356) 

Sidescan Sonar

.

........

 CTG RANGE OF HYDROPHONES 

........

OmniSense: 1kHz - 150kHz Spherical Hydrophones (CTG0691 & CTG0708)

.

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

Download datasheetDownload (pdf) datasheet  
(CTG0691 OmniSense 115,000)

Download datasheetDownload (pdf) 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

(top) 

 

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

 . .

General Hydrophone (CTG0099)

 . .

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

 

 

 

The CTG099 is available in two types: 

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

  • A medium sensitivity/high capacitance offering the best long cable run drive opportunities (CTG099-05).

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.
.

 Applications

  • Acoustic reference standard
  • Marine mammal audio sensor
  • Air gun & bomber monitor
  • Towed Arrays

Advantages

  • Broadband operation
  • Low noise performance

  • Omni-directional response

Download datasheetDownload datasheet (pdf) (CTG0099) 

(top) 

Order Number

CTG0099-0001

CTG0099-0005

 

Nominal Resonant Frequency

85

-

Hz

Bandwidth

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

2000

2000

m

Cable/ Connector/ Mounting

CS/CS/None

CS/CS/None

CS – customer specify cable, connector and calibration requirements

  .

 General Hydrophone (CTG0752)

.

 

The CTG0752 hydrophone is the solution to high precision sensing in demanding environments where acceleration cancelling 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.
.

 

Applications

  • High precision sensing
  • Air gun & boomer monitor
  • Acceleration cancelling 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/dia 

Operating Depth

2000m

Cable/ Connector/ Mounting

Specify cable, connector and 
calibration requirements

Download datasheetDownload datasheet (pdf) (CTG0752)

Towed Array Deployment
Towed Array Deployment 

... ....

 

General Hydrophone (CTG1339)

.. 

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.
.

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

Download datasheetDownload datasheet (pdf) (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