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EMMS

Product catalog summary

System Overview
The Electric and Magnetic Measurement System (EMMS) by STL features a unique 26-bit ADC in an underwater system designed to measure magnetic and electric fields. It connects three or more sensor platforms to a base station using a single cable for power, data transmission, deployment, and recovery. The system can also measure acoustic and pressure signatures, as well as environmental data such as water current vector, temperature, and conductivity. It includes DGPS for precise target tracking, with real-time signal visualization.

Highlights

Real-time signal monitoring
Fully digital with 8 digits dynamic range
Bandwidth up to 20 kHz
Synchronous E- and B-field measurement
DGPS precision tracking
Geodetic autoleveling
Operational at 100 m water depth

Technical Data and Illustrations

Sensors: Typically 3 sensor modules, up to 11; measures electric, magnetic, acoustic, pressure, temperature, current, conductivity, and tilt.
Magnetic Field Sensors: 3 axes per module, 3 orthogonal sensors, noise level < 10 pT/√Hz @ 1 Hz, field range ± 80 µT, frequency range DC–3 kHz, resolution 0.2 pT, accuracy < 0.1%, fluxgate type.
Electric Field Sensors: 3 axes per module, 6 electrodes, noise level < 10 pT/(m√Hz) @ 1 Hz, field range ± 50 mV/m, frequency range DC–3 kHz, resolution 100 pV/m, accuracy 0.1%, carbon electrode type.
Acoustic Sensors: Dynamic range 100 dB, frequency range 1 Hz – 20 kHz, noise < -200 dBZ/µPa, omnidirectional characteristic.
Tilt Meter: 6 tilt meters, resolution < 0.01°.
Temperature Sensor: Range 500 kPa, resolution < 0.2 °C, accuracy 0.5%.
Pressure Sensor: Range 500 kPa, resolution < 500 mPa, frequency range DC–250 Hz, accuracy 0.5%.
Current Measurement: Dynamic range ± 3 m/s, resolution 1 mm/s, accuracy 0.5%.
Conductivity Measurement: Dynamic range 0.01 S/m – 10 S/m.

Catalog excerpts

Electric and Magnetic Measurement System Data Sheet CONTENT System Overview Highlights Technical Data and Illustrations

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System Overview STL‘s unique 26 bit ADC‘s in a novel underwater system to measure magnetic and electric fields, called EMMS (Electric and Magnetic Measurement System). Three or more sensor platforms are connected to a base station in a chain configuration by a single cable used for power and data transmission as well as for deployment and recovery. In addition the system can be equipped with sensors to measure acoustic and pressure signatures as well as environmental information like water current vector, temperature and conductivity. The sensor system also includes DGPS and, therefore, is able...

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www.stl.systems [email protected]

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Pressure sensor Dynamic range Accuracy Conductivity Frequency range Current Dynamic range Acoustic, magnetic, electric, seismic pressure Environmental dynamic and static data Temperature, conductivity, current tilt

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EMMS

EMMS

Catalog excerpts

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