MicroEel
Solid Analog Streamer
P/N 60101-13 Rev. C
May 6, 2012
Operation Manual
GEOMETRICS, INC.
2190 Fortune Drive
San Jose, CA 95131 USA
Tel: (408) 954-0522
Fax: (408) 954-0902
[email protected]
www.geometrics.com
COPYRIGHT © 2011, 2012
Page 1: ...eamer P N 60101 13 Rev C May 6 2012 Operation Manual GEOMETRICS INC 2190 Fortune Drive San Jose CA 95131 USA Tel 408 954 0522 Fax 408 954 0902 sales geometrics com support geometrics com www geometric...
Page 2: ...POWER SUPPLY AND REQUIREMENTS 10 2 2 1 DHA 7 MicroEel Battery Pack 10 2 2 2 Power Consumption 12 2 2 3 AC Battery Charger 12 3 SYSTEM SET UP 13 3 1 INTERCONNECTIONS 13 3 2 DEPLOYMENT 13 3 3 BATTERY C...
Page 3: ...4 Deck cable 55 socket connector termination 8 Figure 5 Tow cable 55 pin connector termination shown with Kellems grip 9 Figure 6 Crate for transport storage and deployment 10 Figure 7 DHA 7 MicroEel...
Page 4: ...1 MicroEel active section with solid flotation green and tow cable black In addition the MicroEel uses unique proprietary polymer hydrophones which unlike ceramic hydrophones are non shattering Polyme...
Page 5: ...m apart 0 22 m aperture with the signal summed electrically and connected to a preamplifier For hydrophone groups less than 3 125 m there is one hydrophone per group connected to a preamplifier Other...
Page 6: ...Figure 2 MicroEel solid analog streamer block diagram MicroEel Solid Analog Streamer Operation Manual Page 6 of 18 Rev C 050612 du...
Page 7: ...cut and a single pole high cut design The low cut frequency is determined by the RC time constant which is related to the element capacitance and the input resistance of the preamplifier front end The...
Page 8: ...termination not shown The standard deck cable termination for analog input from the tow cable is one 55 socket waterproof connector Glenair 220 06E16 55SN Figure 4 Figure 4 Deck cable 55 socket connec...
Page 9: ...he connector pair between the deck and tow cables feature red marks on their collars to indicate when pin and socket are aligned 2 1 4 Cable Crate The streamer is shipped coiled in a crate for storage...
Page 10: ...ry Pack Figure 7 contains two 12V DC deep discharge 5 Amp hour sealed lead acid batteries used in a 12V DC differential power configuration The deck cable power lead is connected to the battery pack v...
Page 11: ...individual battery voltage and current being supplied to the streamer Figure 8 Detail of DHA 7 MicroEel Battery Pack The MicroEel is designed to be powered by the DHA 7 MicroEel Battery Pack use of an...
Page 12: ...l vary depending on the state temperature and age of the batteries The ideal battery operation temperature is between 41 to 77 degrees F 5 to 25 degrees C Long term exposure to temperatures above 106...
Page 13: ...ately when the minimum permissible voltage is reached 3 Connect the analog output connector on the deck cable to the seismograph and check for incoming signal It is also recommended that the seismogra...
Page 14: ...rge cycle 2 Switch the battery pack power switch to the ON position the power switch must be ON to charge the internal batteries from the external charger The VOLTAGE and CURRENT meters will turn on a...
Page 15: ...of time will reduce the life of the batteries Therefore it is recommended that a continuous charge be limited to no more than 1 week The battery pack will lose capacity without use A battery pack in...
Page 16: ...ing has demonstrated that the low frequency calibration of the hydrophone is 99 99 representative of the broadband response up to 10 kHz This low frequency calibration is performed by the substitution...
Page 17: ...to 1 m minimum Flotation Material Polyurethane based Outside Diameter 32 mm Weight in air 0 79 kg m Bend Radius 0 46 m Strength Member Kevlar center stress core Working Load 182 kg Breaking Strength...
Page 18: ...e The limited warranty stated herein is in lieu of all other warranties expressed or implied including the implied warranties of merchantability and fitness for a particular purpose and of all other o...
