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    Geophones, take-out-cables, adapters, roll-along switches ....:    

   LAND SEISMIC EQUIPMENT

UNIVERSITY OF BERGEN
Department of Earth Science
 Allé gt. 41, N-5007 Bergen, Norway 
             
0.1 DRAFT - 13 April, 2018 OM OM -
VER. STATUS CHANGE DATE BY CHECKED APPROVED

Credits W. Wheeler for list of land-seismic cables and geophones.

LAND SEISMIC CABLES


All takeouts are for alligator clips 10 mm wide (red) and 5 mm wide (black). All the geophones have alligator clips.

Item Qty Description Status
1 (3) 12-channel, 12-takeout spread cables, 12.5 m takeout spacing, 6.5 meters each end. Cannon NC-27 connectors.
Black, thin (Ø8 mm) , "pro seismic"?
Not located as of 10 April, 2018
2 (1) 12-channel 160-m extension cable, no take-outs, male and female Cannon NC-27 connector. Not located as of 10 April, 2018
3 (2) 12-ch spread cables, 20-m takeouts, Red, female "Gisewsky" 28-land connectors. De Regt, Holland. Only one found, as of 10 April, 2018
4 (1) 10-ch spread cable, 20-m takeouts, Red, female "Gisewsky" 28-land connectors. -
5 (1) 12-ch extension cable, 70 m long, Red, "Gisewsky" 28-land connectors. De Regt, Holland. Not located as of 10 April, 2018
6 (6) 24-channel, 12 takeout spread cables, 12 m takeout spacing.
Mark Products, "Amphib" Bendix 24-61 connectors.
Black, ca. Ø12 mm
NB: two 12-takeeout cables can be linked end-to-end to make one 24-channel cable.
Not located as of 10 April, 2018
7 (5) 24-channel extension cables, 150-m long, Mark Products, "Amphib" Bendix 24-61 connectors.\\

3 adaptors, AMPHIB to Geode. (Made by WW)

Not located as of 10 April, 2018
 CABLES in Warehouse, Laksevåg:
    1 steel cage and 1 plywood ABEM box with lots of 
    Red 12-chan cables with "Gisewsky" 28-pin connectors,  Estimate 40 cables. Some with 50-meter tko spacing
    Both spread and extension seen.  Some 6-ch 600m, some 6-ch 300m, etc. 
    Several Gisewskey gender-changers and adapters. 
    MUST BE VERIFIED!

ADAPTERS


Qty Photo [click to enlarge]. Description
3 Click to see large version. 12-ch Cannon NC-27 to 24-ch Geode Bendix 24-61. (Geometrics)
1 Click to see large version. 12-ch Gisewsky to 12-ch Cannon NC-27 (Made by WW)
2 (3) Click to see large version.
Click to see large version.

NOTE: Only one of these three adapter is a "true" AMPHIB; the two others have same type of connectors that AMPHIB uses.

AMPHIB to Geode. (Made by WW)

According to W.W. list, there should be three ea. But only two located.

GEOPHONES


NOTE: This information from W.W. notes, last revision October 2009 - should be updated!

Strings


     90 to ? 96 strings, of 6 x 14 Hz vertical geophones, I/O systems, spoon clips
                   Identified about 81 strings. 5 alu boxes and 1 wood box. Where are the rest?
                   6 phones per group/string, can be joined (PE7)
                   case: yellow. PE-3. spike.  "4UB-14-375-   "
                   phone: Sensor SM-4, UB, 14Hz, 375 ohm coil, (Spur Freq. 190 Hz. )
                   wiring: Series, with 8100 ohm shunt across each phone.

     17 strings, of 6 x 4.5 Hz vertical geophones, I/O systems, spoon clips 
                   NB: there were 20 strings, but 3 have been converted to single phones
                   6 phones per group/string, can be joined
                   case: yellow. bigger than PE-3. spike. 
                   case:   "6UB-4.5-375-280"  
                   wiring: 6 in series, in red line, shunt 8200 Ohm across each phone. 
                   "OK 12/2-91"

Single


     19  3-Component, 10 Hz geophones, I/O systems, alligator clips. (changed to 14 Hz?)
                   1 phone per group/string, can be joined
                   phones: Sensor SM 4, 10 Hz, 375 ohm coils, 1 vert (UB), 2 horiz (HB)
                   case: yellow. Stamped "4B10-375" and below it "90GR-187. 3-spike with bubble level.

     138 vert 14 Hz geophones, IO-Sensor, alligator clips, PE-7 "Y" clip adapters
                   1 phone per group/string, can be joined via PE-7s. Lead-in 1 meter
                   case: yellow. PE-3. spike. "4 UB14 375 281" (the 4 is big)
                   phone: Sensor SM 4/7  "UB14 375 31"; 14 Hz, 375 Ohm, shunt 510 Ohm 5%

     12 vert 4.5 Hz geophones, IO-Sensor "SM 1A", alligator clips
                   1 phone per group/string
                   phone: Sensor SM 1A, 4.5 Hz, 280 ohm coil, (Nov 1975)
                   Shunt resistor: 1000 ohm 5%
                   case: yellow.  Stamped "1A4.5-280-45".  Spike.
                   Lead-in cable: 9.75 m, terminating in Y and alligator clips 

     18 vert 4.5 Hz geophones, IO-Sensor "SM 6", alligator clips
                   1 phone per group/string
                   Phone: Sensor SM6, Vertical, B coil, 375 Ohm coil
                   Shunt resistor: no shunt.
                   Case: yellow. PE-3. Stamped "6UB4.5-375". Long spike. 
                   Lead-in cable:  1 m, terminating in Y and alligator clips

     39 vert 50 Hz geophones, IO-Sensor, alligator clips
                   1 phone per group/string, can be joined (PE-7)
                   case: yellow. PE-3. spike. "7UGT50 370 380"
                   phone: Sensor SM 4/7  "UGT50 370 30"
                   PLUS 8 in various stages of disrepair

     48 vert 60 Hz geophones, Mark Products, red, alligator clips, 
                   1 phone per group/string, can not be joined
                   Mark Prods 8008 L-40A1 60Hz 510-ohm coil (flat to 600 Hz)

ROLL-ALONG SWITCH


This is model RS-120/48; we have RS-96/24. Image source.

  • Manufacturer: Geostuff
  • Model: RS-96/24
  • S/N: 97008
  • User Manual (PDF)
  • Manufacturer: Geophysical Survey Systems, 17123 Harmony Hill, Houston, TX 77379. Tel: (281) 379-3027
  • Delivered July 1997, invoice amount: USD 8211
  • Scope of supply:
    • 3 ea Seismic Refraction cable with 12.5 meter takeout, 12 stations per cable, 6.25 meter leads, NK-27-21C end connectors.
    • 1 ea 160 meter Extension Cable
    • 1 ea RS-96/24 Rollalong Switch
    • 1 ea RS-96/24 Adaptor Cable Set
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Page last modified on April 13, 2018, at 07:03 AM
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