background image

Cartridge type: 

Piezoelectric sensing element

Principle of operation: 

Pressure

Power Supply:

48 V Phantom

Frequency range: 

100Hz - 20kHz ±3dB

Directional characteristics: 

Omnidirectional

Sensitivity: 

Nominally 0.7mV/Pa ±2dB

Equivalent noise level A-weighted: 

Typ. <8µV

Max SPL: 

162dB SPL peak

Output impedance: 

<300 Ohm

Polarity: 

Positively increasing sound pressure produces positive-going voltage
at pin 2. Pin 1: Ground, Pin 2: , Pin 3: Signal return

Operating temperature range: 

-10° to +50° C (+14° to 122°F)

Dimensions:  Microphone length:

150mm (5.7in);  

Capsule diameter:

32mm (1.2in)

Weight: 

500g (1.1lbs) (incl. cable)

Frequency Response

Typical on-axis reponse in water.

3

Full Specifications

User’s Manual

Br el & Kj r

Measuring Obj.

QP 1124

Multiply Freq. Scale by

A

B

C Lin.

Zero Level:

(1612/2112)

Potentiometer Range:

dB

Rectifier:

Lower Lim. Freq.:

Hz

Wr. Speed:

mm/sec. Paper Speed:

mm/sec.

Rec. No.:

Date:

Sign:

dB

10

0

Hz

100

200

500

1 kHz

2

5

10

20 kHz

-10

-20

-30

94005e

Summary of Contents for Hydrophone 8011

Page 1: ...Hydrophone Type 8011 User s Manual ...

Page 2: ...ne Type 8011 Technical Description Page 2 Full Specifications Page 3 Using the Hydrophone Page 5 Care of the Hydrophone Page 7 Service and Repair Page 8 Warranty Page 8 CE Standard Page 8 Contents User s Manual ...

Page 3: ...le The Hydrophone uses an integral cable with a robust and abrasion resistant polyurethane jacket The choice of materials allows the product to be used in permanent installations immersed in water or ice over longer periods of time without damaging the product or changing its specifications The preamplifier The Type 8011 uses a built in precision preamplifier which remains unaffected by temperatur...

Page 4: ...sitive going voltage at pin 2 Pin 1 Ground Pin 2 Signal Pin 3 Signal return Operating temperature range 10 to 50 C 14 to 122 F Dimensions Microphone length 150mm 5 7in Capsule diameter 32mm 1 2in Weight 500g 1 1lbs incl cable Frequency Response Typical on axis reponse in water 3 Full Specifications User s Manual Br el Kj r Measuring Obj QP 1124 Multiply Freq Scale by A B C Lin Zero Level 1612 2112...

Page 5: ...0 dB 10 dB 20 dB 30 dB 40 dB Polar pattern Directional characteristics of Hydrophone Type 8011 at 10kHz 4 Full Specifications User s Manual ...

Page 6: ...ring on the recording the water medium must be properly connected to the chassis ground of the electrical equipment in use A cobber wire immersed in the water and connected to the chassis ground will solve the problem Important Many small air bubbles covering the element can affect the sensitivity of the sensing element The element must be in full contact with the medium in order to meet the speci...

Page 7: ...sing two 8011 Hydrophones The spacing between the two Hydrophones needs to be 4 times larger approx 1 2 meters than when making A B stereo recording in air This is due to the fact that wavelengths are 4 5 times longer in water than in air Please see the table below Speed of sound in water 6 Using the Hydrophone User s Manual ...

Page 8: ...50 63 80 100 125 160 200 250 315 400 500 600 800 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000 12500 16000 20000 21 4 17 2 13 7 10 9 8 58 6 86 5 44 4 29 3 43 2 74 2 14 1 72 1 37 1 09 85 8 cm 68 6 cm 57 2 cm 42 9 cm 34 3 cm 27 4 cm 21 4 cm 17 2 cm 13 7 cm 10 9 cm 8 58 cm 6 86 cm 5 44 cm 4 29 cm 3 43 cm 2 74 cm 2 14 cm 1 72 cm Wavelengths in air 20 C m Frequency 1 3 octave Hz Wavelengths i...

Page 9: ...are ready to return it to you Your satisfaction is our satisfaction Please contact DPA Microphones for your nearest representative on tel 45 48 14 28 28 or fax 45 48 14 27 00 You can also get in touch with DPA Microphones via the internet using e mail info dpamicrophones com or by visiting www dpamicrophones com Warranty All products from DPA Microphones are covered by a one year limited warranty ...

Page 10: ...Gydevang 42 44 3450 Alleroed Denmark tel 45 48 14 28 28 Fax 45 48 14 27 00 email info dpamicrophones com www dpamicrophones com DPI8011 ...

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