Transformer Coupled Hydrophone Voltage Sensitivity Hydrophone
Need two hydrophone models for seismic work in wet zones Look at GD-25-11A and GD-25-14A. They work in swamps rivers bays transition zones. Both are pressure sensitive detectors. Both use piezoelectric crystals. Both have acceleration canceling for noise reduction. Both operate in high sensitivity bender mode. Both include transformer coupling. Both are permanently molded in polyurethane. Both have thermoplastic resin outer cases. Both have red shells for visibility. Both provide polarity test ports. Both carry 12 month warranty.
Water protection is total because molding has no seams. No leakage ever. No cable wicking either. The red case adds impact resistance. The test ports save field time.
Repeated key selling points
Waterproof polyurethane body cannot leak.
Acceleration noise canceling cleans up seismic data.
Easy polarity check through external ports.
12 month warranty included.
High output at 11 or 14 V/Bar.
Parameter Table
| Parameter | GD-25-11A | GD-25-14A |
|---|---|---|
| Type | GD-25-11A | GD-25-14A |
| Natural frequency (Hz) | 10 plus minus 15 percent | 10 plus minus 15 percent |
| D.C. resistance (Ohm) | 160 plus minus 15 percent | 160 plus minus 15 percent |
| Voltage sensitivity (V/Bar) | 11 plus minus 1.5 dB | 14 plus minus 1.5 dB |
| Max working depth (m) | 100 | 100 |
| Operation temperature range (C) | 0 to 35 | 0 to 35 |
| Unit length (mm) | 116 | 116 |
| Unit length with case (mm) | 160 | 160 |
| Unit diameter (mm) | 53 | 53 |
| Unit diameter with case (mm) | 64 | 64 |
| Weight (kg) | 0.4 | 0.4 |
| Lead in length | Under clients request | Under clients request |
Specifications summary
Natural frequency 10 Hz plus minus fifteen percent.
DC resistance 160 ohms plus minus fifteen percent.
Sensitivity 11 or 14 V/Bar plus minus one point five dB.
Depth rating 100 meters.
Temperature range 0 to 35 degrees Celsius.
Body size 116 mm by 53 mm.
Size with case 160 mm by 64 mm.
Weight 0.4 kg.
Lead length made to client request.
Why buy these hydrophones
They never leak water because of one piece polyurethane molding.
They cancel acceleration noise so your seismic data stays clean.
They let you check polarity in seconds without opening anything.
They come with a 12 month warranty for peace of mind.
They deliver high voltage output either 11 or 14 V/Bar.
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