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Help CenterProfessional Geological Exploration Geophone Underwater Hydrophone for River / Lake / Swamp Zone
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1 Product name Hydrophone
(A),HJ-8 type piezoelectric detector
HJ-8 type piezoelectric detector is mainly used for marine geological exploration. With the receiving frequency band range of housing design, unique wide and high sensitivity. The maximum depth is 100 meters. Mainly used in marine areas, rivers, lakes, swamps and transition zone etc.. This product adopts unique polyurethane material and process for packaging. Has the characteristics of corrosion resistance, abrasion resistance, anti water pressure. Cable and casing injection molding as a whole, has unique waterproof function.
The HJ-8 series products are on the early stage of piezoelectric geophone renewal. The main performance in the overall performance, and improved receiving oscillator. Early products using four receiver oscillator for receiving. Using series parallel certain relationship between each vibrator is connected. Poor consistency between the big disadvantage of this connection is the oscillator. Due to the positive, reverse piezoelectric effect, and the noise interference response in response to a vibrator can cause other oscillator. This will directly affect the seismic data resolution. In order to meet the needs of high resolution seismic exploration, HJ-8 products will be changed into a single oscillator receives oscillator. To eliminate the influence between each other, improve the signal fidelity, in order to adapt to the high resolution seismic exploration.
The HJ-8 type piezoelectric geophone and outer jacket photos
Product features:
High sensitivity output; Working depth range of 100 meters; High reliability, long service life; Special shell protection;Main performance index:
|
Type |
Frequency(Hz)±10％ |
DC resistance (Ω) ±10％ |
Sensitivity (μV/μbar) ±1.5dB |
Depth (m) |
Damping coefficient ±10％ |
Working temperature (℃) |
|
HJ-8B-8 |
8 |
160 |
14(-197.1dB) |
100 |
0.70 (And drag) |
0～40 |
|
HJ-8B |
10 |
160 |
14(-197.1dB) |
100 |
||
|
HJ-8C |
10 |
145 |
14(-197.1dB) |
100 |
||
|
HJ-8D |
According to the customer request processing |
100 |
According to the customer request processing |
|||
|
Note: HJ-8B-8 is equivalent to MP-24L2 |
Dimensions:
Length:142mm (with a protective shell for 152mm)
Diameter: Φ58mm (with a protective shell is Φ68mm)
Cable: Φ7.8mm
Description:
Red for positive output terminal cables.2, With the depth of change, change sensitivity range of less than 1.5db.
3, Hydrophone with outgoing head of 1 meters. External waterproof connector is optional. Can qualify head length changes according to the user\'s requirements.
4, Hydrophone with outer shell. Housing for the optional accessories. According to customer needs to set.
HJ-8B-8 type piezoelectric geophone response curve
HJ-8C type piezoelectric geophone response curve
|
(B),HJ-8C-Ⅱ double detector (for submarine cable )
HJ-8C- II dual detector unit is used to compensate for the lack of ocean exploration P wave reception. Not only for the exploration of the sea can also be used in the transition zone of exploration.
HJ-8C- II dual detector unit with two high performance super land geophone with universal structure and a piezoelectric detector is composed of. Liquid damping land inspection can guarantee the universal structure has good coupling effect and prevent outside of background noise on the land checking interfere
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