Additional information
Model NumberUnamplified Sensitivity
Max Depth
Max Frequency
Element Capacitance
M36-100-198.5dB re V/μPa
2500m
200000Hz
1.5nF±0.1nF
M36-600-200.5dB re V/µPa
6000m
250000Hz
0.5nF ±0.1nF
M36-900-198.5dB re V/μPa
900m
200000Hz
1.5nF±0.1nF
M5-360-195dB re V/μPa
1700m
20000Hz
2nF
M36-905-195dB re V/μPa
900m
20000Hz
2nF
M36-014-200dB re V/μPa
3500m
20000Hz
5nF
M14-900-200dB re V/μPa
900m
20000Hz
8nF
M15-360-190dB re V/μPa
1700m
15000Hz
1nF
M36-915-190dB re V/μPa
900m
15000Hz
1nF

GTI Hydrophones

GeoSpectrum Technologies Inc.'s range of wide band, omnidirectional hydrophones

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From detecting marine mammals to monitoring blow-out preventers and subsea construction, GeoSpectrum’s vast range of hydrophones can be tailored to any need.

KEY FEATURES

• Tried and tested in RS Aqua’s Acoustic Monitoring products
• Up to 6000m depth rated
• Up to 250,000Hz Frequency

GeoSpectrum designs and manufactures a variety of wide-band omnidirectional hydrophones which include an integral low-power, low-noise, voltage- or current-signalling preamplifier. These hydrophones can be configured to operate over customer-defined bandwidths, required sensitivity, and allow for customisable gain. The depth rating for each hydrophone can be tailored to meet export requirements and range from shallow to deep-water applications.

GTI M351 Field Calibrator

M351 FIELD CALIBRATOR

The M351 is a battery-operated precision hydrophone field calibrator. The calibrator can display the hydrophone (HP) sensitivity and/or the sound pressure level (SPL) in the calibration chamber. The M351 is intended to calibrate GTI hydrophones, or can be supplied with a custom interface to support hydrophones from other suppliers.

GTI provides a Windows application, Hydrophone (HP) Connection Software, which enables users to update firmware on the field calibrator as well as to view the data stored on the internal EEPROM. Communication with the field calibrator is achieved serially via a USB-B port on the calibrator.

The M351 allows users to easily test their hydrophones before deploying for use. Ocean trials and testing can be costly; having equipment deployed that is dysfunctional and or not accurate can cause inaccurate data collection. This malfunction can cost customers in time and funds. The M351 allows users to test their hydrophones reducing the risk of hydrophone dysfunction and validate hydrophone sensitivity before deploying their monitoring systems.

• Hydrophone: M36 & others with similar form factor
• Max Diameter of 1.5” (active element in the top 3” of the sensor)
• Interface: MCBH-8F on Calibrator
• Frequencies: 10, 26, 70, 100, 250Hz
• Computation/Display: HP Sensitivity and/or SPL in Box
• Reference HP: GTI M2, accuracy ±0.1dB
• Calibration Accuracy: ± 0.25dB
• Display: Basic 16×2 character LCD
• Calibration Data Storage: Internal EEPROM
• Software: GTI HP Connection
• Communication: Serial via USB-B port on Calibrator
• Power: Internal 12V NiMH Rechargeable Battery

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Additional information
Model NumberUnamplified Sensitivity
Max Depth
Max Frequency
Element Capacitance
M36-100-198.5dB re V/μPa
2500m
200000Hz
1.5nF±0.1nF
M36-600-200.5dB re V/µPa
6000m
250000Hz
0.5nF ±0.1nF
M36-900-198.5dB re V/μPa
900m
200000Hz
1.5nF±0.1nF
M5-360-195dB re V/μPa
1700m
20000Hz
2nF
M36-905-195dB re V/μPa
900m
20000Hz
2nF
M36-014-200dB re V/μPa
3500m
20000Hz
5nF
M14-900-200dB re V/μPa
900m
20000Hz
8nF
M15-360-190dB re V/μPa
1700m
15000Hz
1nF
M36-915-190dB re V/μPa
900m
15000Hz
1nF

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