EQUIPMENT MARKING TRANSMITTERS (EMT)
Sonotronics’ Equipment Marking Transmitters consist of high powered, long life transmitters placed in rugged, highly visible packaging. The EMT series transmitters come standard with flat ends and 3/16″ mounting holes on each end. Other custom packaging options are possible.
Notes
* The EMT-01-3 has user replaceable batteries.
**EMT-01-1 and EMT-01-2: Recommended maximum depth rating: 2500m. Transmitters have been tested successfully to 5000m depth. The EMT-01-3 replaceable battery unit is rated for a maximum depth of 1000m.
EMT-AR ACCELEROMETER BASED ACOUSTIC TRANSMITTER
Sonotronics EMT-AR (Angle Reporting) transmitters use an integrated accelerometer to measure and transmit the tilt angle or inclination of attached equipment, enabling real-time monitoring of its orientation. A surface receiver can be used to verify the alignment of instruments such as ADCPs without requiring a diver. With operating lifetimes of up to four years, these transmitters can also mark deployment sites for future relocation. Monitoring is performed using either the USR-23 deck receiver or the UDR diver receiver.
MO: MODULE ONLY GENERATORS
CHP-MO-HP
Sonotronics is now offering versions of its acoustic transmitters as modules that use external power sources. The CHP-MO-HP may be mounted on an instrument package or underwater vehicle, taking advantage of existing onboard power sources. The 2 wire version of the CHP-MO-HP will begin transmission of a coded sequence as soon as power is applied, and alternatively a 3 wire version is available that allows separate transmit control. Key specs:
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16mm (dia) x 40mm (length)
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External Supply: 2.8V-5.5VDC 75ma max, 2ma ave
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Frequencies: 32-40kHz, 69-83 kHz, crystal controlled
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Source level: up to 150db re 1uPascal @ 1m
EMT-01-3HP-MO
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32mm (dia) x 85mm (length)
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External Supply: 4.5V-15VDC 500ma transmit
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Frequecies: 32-40kHz crystal controlled
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Source level: up to 165db re 1uPascal @ 1m
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4 wire (1m water blocked, jacketed cable)
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V+ = Red GND = BLACK
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Control+ (C+) = Orange GND = Brown
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Operation: with power applied to Red/Black,
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C+ open = off, C+ to GND = transmit