Ecologic can assemble acoustic monitoring systems to meet the particular requirements of clients.  

In addition, Ecologic acts as an agent for Magrec, a firm that  specialises in the production of acoustic equipment for marine mammal research.  The following standard items are available.

Magrec Underwater Monitoring Equipment Available Through Ecologic

	HP/30 General Purpose Hydrophone
	HP/40  Broadband dipping hydrophone
	HP/30 ST  Stereo Towed Hydrophone Streamer
	HP/01  Hydrophone Preamplifier
	HP/ 02  High Quality Broadband Preamplifier
	HP/24 Waterproof Hydrophone Monitoring Unit
	HP/ 25ST Waterproofed Stereo Hydrophone Monitoring and Conditioning Unit
	HP/ 26  Waterproof Hydrophone Monitoring Unit
	HP/27ST High Quality Hydrophone Monitoring Unit

Prices exclude delivery.

HP/30 General Purpose Hydrophone

The HP/30 is designed to be deployed from a small boat or dinghy and will capture sounds within the audible frequency range. An external 12 volt battery is required to power the hydrophone, dry cell or a small rechargeable type are suitable. The output can then be fed into the MICROPHONE input of a portable amplifier or tape recorder. The output is D.C. and should be decoupled if necessary. For best results the hydrophone battery must be isolated from all other equipment such as tape recorders etc. Use the HF/22 battery box for convenient power supply and decoupling or the HP/24 with additional headphone output. Cable lengths available 8—50 metres.

Bandwidth                            200Hz to 20Khz   Acoustic sensitivity            —156db re 1v/~Fa Element                               Benthos AQ—4 Preamplifier gain                 29db Output impedance              50Ω Supply voltage                    12 volts D.C.(maxl5) Current consumption         15mA (12v supply)

The element and preamplifier are suspended in an oil filled P.V.C. tube. Length 210mm. diameter 27mm. Standard cable length 8 metres fitted with 6 pin waterproof 1P68 connector.

HP/30LF Low frequency hydrophone. As above but with extended LF range. Customer specified down to 15Hz.

Price £320.00 

For cable lengths greater than 8m add £2.00 per metre

Broadband dipping hydrophone HP-40

	Bandwidth                            100Hz to 250kHz (-3dB)                                                         Optional LF range to 10Hz Element                                   SRD HS 150 Preamplifier gain           29db  differential output Output impedance            10Ω Supply voltage                    1 2 volts D.C.(maxl5) Current consumption      15mA (12v supply)

The HP-40 is designed to capture low and high frequency sounds, using a spherical element and balanced output preamp. A 12 volt battery is required unless using the recommended monitor amps HP-25 or HP-26.

Output connector: 6 pin Buccaneer plug.

Cable lengths 10 to 50 metres.

No cost option, extended low frequency range available, down to 10Hz.

Price £750.00 

For cable lengths greater than 8m add £2.00 per metre

 HP30-ST Stereo towed hydrophone

HP-3OST Stereo towed hydrophone array can be monitored while underway (maximum towing speed 10 knots).  The user can achieve a degree of directivity by listening in stereo.  These hydrophones are designed to be compatible with the IFAW monitoring programs (Logger, Rainbow Click, Whistle).  Mono and stereo arrays designed for research and survey work, the HP-30MT/HP-30ST towed hydrophones are capable of driving long cables over a broad frequency range. Recommended monitor amplifiers HP-25, HP-26 or HP-27.

Frequency response: 100Hz to 20Khz -3dB. Optionally LF response to 20Hz HF response to 250kHz Element: Benthos AQ-4 (2x HP-30ST). Preamp gain: 29dBs, differential output. output impedance: 10 Ω. Supply voltage: 12 vdc (15v max.) Current consumption: 15mA (mono), 30mA (stereo). Output connector: 6 pin Buccaneer plug. Max. towing speed: 10 knots. Cable: Polyurethane outer sheath, Kevlar strengthened.

Options:

High frequency range available using SRD HS-150 elements or equivalents

Depth sensor

Hairy fairing to reduce strum

Dimensions:  HP-30ST 10 metre x 35mm polyurethane, oil filled tube.

Oil type: ISOPAR M or Multipar M, odorless paraffin.

Cable length available up to 500 metres. Supplied with 100 metre cable as standard 

Pricing: 150m cable, Stereo A4 eleemnts and preamplifers, depth sensor £3,700

HP/01 Hydrophone Preamplifier

Designed by I.FA.W. for use mainly with Benthos hydrophone elements, this preamplifier has proven extremely reliable.

Input impedance                    10 MegΩ             Output impedance                 50 Ω              Bandwidth                                  200Hz — 60 kHz             Gain                                                   30 dB              Supply voltage                          12 volts D.C.             Supply rejection                        -30 db @ 30kHz              Current consumption          14 mA              Size     Length approx. 70mm X 15mm dia.

The preamplifier is encapsulated with 200mm flying lead connections. Low frequency types are available on request.

Note:   The output is directly coupled and must be decoupled when necessary. Always ensure the preamplifier battery is isolated from any other equipment being used.  

Price £94.00

HP/ 02  High Quality Broadband Preamplifier

Input impedance 3MΩ Output impedance 10Q Output differential Gain 29db Frequency range ...10Hz to 250Khz -3db (optional highpass cutoff) Supply voltage 12 volts DC (15v max.) Supply current 15mA max

Designed for use with ceramic elements such as Benthos AQ-4, AQ-2000, SRD HS-150 etc. Ideal for construction of multi channel hydrophone arrays. Low noise FET input with differential output capable of driving 1 Km of cable at full bandwidth.

The HP-02 is epoxy potted into a cylinder 70mm x 15mm dia. Standard flying leads for input 100mm and for output and supply 300mm. Also available unpotted

Several lead options are available

Price £162

HP/22 Belt Clip Battery Box

Belt clip battery box for use with the HP-30 hydrophone. Takes 8x ‘AA’ size batteries (battery life mm. 120 hours). The hydrophone is connected to a waterproof socket, output is via a 600mm cable to 3.5mm jack plug.

Price £32.50

HP/25 ST Waterproofed Stereo Monitor Box

For use with the HP-30ST stereo hydrophone array or with two dipping hydrophone such as HP30 or HP40, the HP-25ST monitor box is suited for use in harsh environments such as RIBs and on boat decks. Features volume control, headphone output, gain switch, high pass filter, dual tape outputs, isolated computer outputs, high frequency click detector. Hydrophone connection is via an external waterproof connector and the unit is housed in a waterproof Pelican case. Requires 8x'AA' batteries which also supply the hydrophone, giving approx. 20 hours use.

Mono version available.

Frequency response:   10Hz to 300Khz -3db. Gain 30db.

Input:     Balanced, 10KΩ impedance.

Headphone output: 150mW RMS into 32Ω, via 4" jack socket. Toggle switch selects _AF (audible frequency) for stereo channels or AF/Clk. for AF left channel and high freq. click detector right channel.

Tape outputs: 4KΩ impedance, via phono sockets. Dual outputs for AF and single output for click detector.

Computer outputs: Isolated outputs for stereo AF and mono click detector. AF frequency response 20Hz to 25Khz -3db.

High pass filter: 6 position switch selects 0,40,80,400,1k6 and 3k2 Hz, -6db.

Gain switch: 6 position switch selects 0,10,20,30,40 and 50dbs.

High frequency click detector: Range 20Khz to 300Khz, monitored via headphone right channel (mono signal).

Fitted in waterproof Pelican 1200 protector case. Size: 240x185x105mm  (orange or yellow).

Price £1200.00

HP/26 Waterproofed Stereo Monitor Box

Frequency response:        10Hz to 300Khz -3db. Gain 30dbs. Input:                                   Balanced, 10KΩ impedance. Headphone output:                     150mW RMS into 320, via 4" jack socket. Toggle switch selects _AF for left and right channel or AF/Clk. for AF left and Clk. for right channels. Tape outputs:                  4k7Ω impedance, via phono sockets for AF (audio frequency) and Clk. (high frequency click detector). High pass filter:                Toggle switch selects 8OOHz -3dB Gain switch:                       Selects gain low 30dbs, or gain high 36 dB. HF click detector:              Range 20Khz to 300Khz. Monitored via headphone RH channel and Clk. tape out socket.

For use with the HP-30ST and HP-40 hydrophones, the HP-26 monitor box is designed for harsh environments such as RIBs and on boat decks. Features volume, headphone output, high/ low gain switch, high pass filter switch, tape outputs and high frequency click detector. Hydrophone connection is via an external waterproof connector and the unit is housed in a waterproof Pelican case. Requires 8x 'AA' batteries which also supply the hydrophone, giving approx. 20 hours use. Stereo version HP-26ST.

socket.

Size: 240x190x120mm Pelican 1150 protector case (orange or yellow available).

Price £860.00

HP/27ST Stereo Monitor Box

This unit has been designed specifically for use ‘with the HF/3OST stereo hydrophone array. Particular attention is paid to noise immunity by using a balanced input amplifier and transformer isolated output for connection to a computer. In addition the HP/27ST features dual headphone output, balanced tape output and high pass filter (optional low pass filter is available).

Specifications:—

Supply voltage: 10 to 35 volts DC, reverse polarity protected input via 5 pin XLR connector. Front panel power switch & LED.

Supply current: 200mA at 12 volts (lOOmA at 24 volts).

Input: Balanced input, gain settings 0,10,20,30,40,50 dB selectable on front panel switch, input via 1P68 connector.

High pass filter: —6db/octave selectable at 0,40,80,400,1k6 and 3 kHz via front panel switch.

Line output: Balanced output via 3 pin XLR connector. 50 Ω impedance, distortion less than 0.05% at 1Khz.

Trans. output: Isolated transformer output for computer conn. via 3 pin XLR connector. Impedance 2.4KΩ

Headphone output: Dual output via 1/4"  jack sockets. 1 watt RMS into 8Ω total load, distortion less than 0.1% at 1Khz.

Overall bandwidth: 10Hz to 100Khz —3db with filter set to 0.

Dimensions:            Housed In a powder coated steel instrument case L~205mm, D=260mm, H:70mm. or in 19" rack format

A two metre battery cable is supplied with each unit, fuses are fitted inside the box but it is recommended a 1 amp fuse is connected in series with the positive lead and battery terminal.

Optional 19" rack format

Price £950.00

HP/24 Waterproof Monitor box 

For use with the HP—30 hydrophones or directional hydrophones, the HP—24 monitor box is designed for harsh environments such as in RIBs and on boat decks. Features include volume control, high pass filter and tape output. The headphones output and hydrophone input are via external 1P68 waterproof connectors and the unit is housed in a waterproof Pelican case. It requires 8x ‘AA’ size dry cell batteries or rechargeable NiCad or Hydride types giving approx. 65 hours use. Protected against reverse polarity connection.

Bandwidth                    40Hz to 50Khz

Headphone output      150mW RMS into 32Ω, via 1/4“ flying lead jack socket.

Input                             47KΩ impedance, 6 pin Buccaneer socket

High pass filter             —3db at 1Khz, selected by front panel toggle switch.

Tape output                   47KΩ impedance via phono socket. Use mic. input on tape recorder.

Size                                 216x165x83mm Pelican 1120 protector case 1P67 (black).

Price £390.00

Directional Hydrophone POA

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Last modified: February 24, 2007