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USERS MANUAL
SCPT-GS2 GEOTECH NOVA
(Seismic Cone Penetration Testing, 2 Sensor Sets)
Ingenjörsfirman Geotech AB
Datavägen 53
SE-436 32 ASKIM (Göteborg)
Sweden
Ph: +46 - 31 28 99 20
Fax:+46 -31 68 16 39
E-mail: info@geotech.se
www.geotech.eu
Published date: 2018-08-28
SCPT-GS2 GEOTECH NOVA Manual
2018-08-28
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Summary of Contents for Geotech SCPT-GS2
- Page 1 (Seismic Cone Penetration Testing, 2 Sensor Sets) Ingenjörsfirman Geotech AB Datavägen 53 SE-436 32 ASKIM (Göteborg) Sweden Ph: +46 - 31 28 99 20 Fax:+46 -31 68 16 39 E-mail: info@geotech.se www.geotech.eu Published date: 2018-08-28 SCPT-GS2 GEOTECH NOVA Manual 2018-08-28...
- Page 2 SCPT-GS2 GEOTECH NOVA Manual 2018-08-28...
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Page 3: Table Of Contents
Notes DOCUMENT HISTORY Date Comment Sign 2016-12-02 New document for review 2016-12-22 Revised product structure, descriptions and instructions. Added pictures. 2017-09-22 Added picture to front page. Dimensions added (fig. 7). 2018-08-28 Added picture (fig. 5) SCPT-GS2 GEOTECH NOVA Manual 2018-08-28... -
Page 5: General Information
The information in this publication is on the basis of information that was available at the time that the publication was written. The information can change at any time. Geotech reserves the right to change or update the content of the manual without prior notice. -
Page 6: Product Information
The SCPT-GS2 GEOTECH NOVA adapter is equipped with two sets of very sensitive 3-axial seismic sen- sors that are mounted with a fixed distance from each other (normally 1 meter). Data processing takes place in the down-hole seismic adapter. - Page 7 The seismic add-on adapter is to be connected immediately behind the CPT probe. The standard adapter is intended for use together with “NOVA Probe”. Fig. 3 – The SCPT-GS2 seismic adapter has two sets of 3-axial seismic sensors mounted on 1 m fixed distance. You typically connect it behind the CPT NOVA CPTU probe.
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Page 8: Intended Use
Fig. 4 – Typical system design for a GEOTECH SCPT system. The seismic signal is captured in the SCPT adapter that communicates with the computer via the SCPT box and a USB cable. CPTU data from the probe is passed on to the CPT interface where it is combined with depth encoder input. -
Page 9: System Components Overview
30018 of seismic adapter GS2 connecting top and bot- tom part of seismic adapter. Included SCPT-GS2 NOVA Adp3 Top part of seismic in 30018 adapter GS2 with one set of 3-axial seismic sen- sors. SCPT-GS2 GEOTECH NOVA Manual 2018-08-28... - Page 10 Seis- mic box. Clamp for earth connection of bottom plate. 10503 Bottom plate, S Bottom plate for genera- tion of share wave (S wave). Semi-automatic wave Picture will follow source available on re- quest SCPT-GS2 GEOTECH NOVA Manual 2018-08-28...
- Page 11 CPT sounding rod for soil “Speedlock” (SPL) investigation. For cable or acoustic data transfer. Properties of each part: Diameter: 36 mm, conical SPL thread. “Speedlock”. Active length: 1000mm Total length:1546 incl. winding Approx. weight: 6.75 kg SCPT-GS2 GEOTECH NOVA Manual 2018-08-28...
- Page 12 Transport case for 1 m rods. Dimensions: 113 x 27 x 22 cm. Weight 19.3 The GEOTECH NOVA product range is being continuously developed and improved. We therefore reserve the right to changes of the information above. SCPT-GS2 GEOTECH NOVA Manual...
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Page 13: In The Hole Equipment
SCPT-GS2 NOVA Seismic Adapter Fig. 6 – The SCPT-GS2 Seismic adapter consists of several parts and is to be mounted between the probe and the rod. The top part is on the picture attached to the cable adapter for connection to the down-hole cable for power supply and signal transmission. - Page 14 Fig. 8 – SCPT-GS2 NOVA Adp1. Bottom part of seismic adapter with one set of 3-axial seismic sen- sors to be connected to "probe NOVA". Diameter 36 mm. Fig. 9 – SCPT-GS2 NOVA Adp2 and internal cable. This middle part (distance pipe) of seismic adapter GS2 will give you 1 meter fixed distance between the two sets of seismic sensors.
- Page 15 Product Information Fig. 10 –The top part of the seismic adapter comprises one set of 3-axial seismic sensors. SCPT-GS2 NOVA Cable Adapter Fig. 11 – The cable adapter is normally delivered permanently attached to the top part of the seismic adapter.
- Page 16 The connection between the adapter and cable demands caution. Make sure that connectors fit to each other properly before tightening the bolts. Before the other end of the cable is connected to the SCPT-GS2 Interface, the LEMO adapter should be mounted on the connector.
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Page 17: Data Collection Equipment
Trigger cable (hammer) CPT Interface Fig. 14 – Connection of cables to the SCPT-GS2 Interface. Note that the old “Seismic Box” is not compatible with the GS2 version (upgrade is possible). CPT Interface cable Note that the cable between the SCPT-GS2 Interface and the CPT Interface must have internal connection to all pins (some “microphone cables”... - Page 18 Fig. 16 – SCPT-LOG/GS2 logging software. Medium for software delivery is subject to change with- out notice. The SCPT-GS2 adapter and the SCPT-GS2 interface interact with the SCPT-LOG/GS2 software, installed on your logging computer. The software has functions for setting up the system, performing tests and pre- senting test results.
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Page 19: Wave Generation
Fig. 18 – Bottom plate for S wave. Bottom plate “P wave” Due to the mechanical design of this first version of the in-the-hole equipment, it is not suitable for P wave detection. Fig. 19 – Bottom plate for P wave. SCPT-GS2 GEOTECH NOVA Manual 2018-08-28... -
Page 20: Preparations
The connection between the adapter and cable demands caution. Make sure that connectors fit to each other properly before tightening the bolts. Before the other end of the cable is connected to the SCPT-GS2 Interface, the LEMO adapter should be mounted on the connector. -
Page 21: Assembly Of Adapter And Probe
Preparations Fig. 21 – Before the cable is connected to the SCPT-GS2 Interface in the other end, the LEMO adapter should be mounted on the connector. Assembly of adapter and probe Assemble the SCPT adapter and the CPTU probe. For best performance check that the seismic sensors are aligned: Fig. -
Page 22: Preparations For Compression Wave Testing (P Wave)
Directly after the acquisition is finished the graph will be displayed in the graph window. Repeat until you are satisfied and save. Go back to the CPT-LOG software, press Start (F2) and resume the CPTU test. Do the next SCPT test in the same way as described above. SCPT-GS2 GEOTECH NOVA Manual 2018-08-28... -
Page 23: After Test
Fig. 24 – Dirty or corroded threads might affect the functionality of the system. If necessary use a rotating wire brush to clean the thread of the adapter. Make sure that the equipment is clean and dry after each shift. SCPT-GS2 GEOTECH NOVA Manual 2018-08-28... -
Page 24: Installation And System Maintenance
Mount the SCPT-GS2 NOVA adapter on the cable adapter and the CPTU probe. Trigger cable Connect the sledge hammer cable to the SCPT-GS2 Interface and the free lead to a bottom plate, using the crocodile clamp. Make sure to remove paint and/or rust for best electrical contact between plate and clamp. -
Page 25: Authorized Workshops
Seismic box and CPT Inter- cable type (Item No. 10850), that it is face? undamaged and properly connected. Probe assembly or cable from Test by connecting SCPT adapter with probe assembly damaged? CPT probe directly to the Seismic box. SCPT-GS2 GEOTECH NOVA Manual 2018-08-28... -
Page 26: Notes
Notes ------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------------------------------------------- SCPT-GS2 GEOTECH NOVA Manual 2018-08-28... - Page 28 2016 – 2017 Ingenjörsfirman Geotech AB Datavägen 53 • 436 32 Askim • SWEDEN Phone +4631289920 • Fax +4631681639 www.geotech.eu • info@geotech.se SCPT-GS2 GEOTECH NOVA Manual 2018-08-28...
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