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GeoSIG Ltd
AC-23 Accelerometer Manual
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AC-23 Accelerometer
User Manual
GeoSIG Ltd
Wiesenstrasse 39, 8952 Schlieren, Switzerland
Tel: +41 44 810 21 50, Fax: +41 44 810 23 50, E-mail: info@geosig.com
Serge Rudaz
Markus Epp
Johannes Grob
GeoSIG Ltd (1), Customer on request
GS_AC-23_UserManual_V14.docx/27.05.2019
Page 1
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Related Manuals for GeoSIG AC-23
Summary of Contents for GeoSIG AC-23
- Page 1 AC-23 Accelerometer Manual Page 1 AC-23 Accelerometer User Manual GeoSIG Ltd Company: Wiesenstrasse 39, 8952 Schlieren, Switzerland Tel: +41 44 810 21 50, Fax: +41 44 810 23 50, E-mail: info@geosig.com Author: Serge Rudaz Checked: Markus Epp Approved: Johannes Grob...
- Page 2 GeoSIG Ltd GS_AC-23_UserManual_V14.docx/27.05.2019 AC-23 Accelerometer Manual Page 2 DOCUMENT REVISION Date Version Author Checked Description 15.04.95 Created 11.04.00 Format/Font changes 05.07.01 Update pictures and connector description for new 12 poles version. Added principle of operation. 30.05.2003 Changes for new housing 06.06.2003...
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Page 3: Table Of Contents
GeoSIG Ltd GS_AC-23_UserManual_V14.docx/27.05.2019 AC-23 Accelerometer Manual Page 3 TABLE OF CONTENT ELECTRICAL CONNECTION........................4 1.1 M ......................4 ONNECTOR SSIGNMENT 1.2 M ..........................4 ATING CONNECTOR MOUNTING ............................... 5 THEORY OF OPERATION ........................6 3.1 I ............................6 NTRODUCTION 3.2 P ............................... -
Page 4: Electrical Connection
GeoSIG Ltd GS_AC-23_UserManual_V14.docx/27.05.2019 AC-23 Accelerometer Manual Page 4 Electrical Connection Main Connector Pin Assignment All the AC-2X accelerometers use the same 12 pins male metallic style connector as the AC-43 and AC-63. The connector pins standard assignments are as follows:... -
Page 5: Mating Connector Mounting
GeoSIG Ltd GS_AC-23_UserManual_V14.docx/27.05.2019 AC-23 Accelerometer Manual Page 5 Mounting Figure 2, AC-2X housing Small size and single bolt attachment allow the AC-2X to be easily installed saving installation time. Levelling is accomplished via three-point levelling screws. Do not overtighten the three-point levelling mechanism. This may damage the sensor. -
Page 6: Theory Of Operation
One M8 expanding nut rock anchor must be used for the sensor fixation. Theory of operation Introduction The AC-23 sensor package is a triaxial accelerometer designed for free field and industrial applications regarding STRONG-MOTION earthquake survey, monitoring and research. This sensor is well suited for applications where a high sensitivity is required. -
Page 7: Basic Specifications
GeoSIG Ltd GS_AC-23_UserManual_V14.docx/27.05.2019 AC-23 Accelerometer Manual Page 7 This current flowing in the Geophone will move the seismic mass. The movement of the mass generates a voltage across the Geophone, which is detected by the differential amplifier and induces an output signal. -
Page 8: Electrical Configuration
GeoSIG Ltd GS_AC-23_UserManual_V14.docx/27.05.2019 AC-23 Accelerometer Manual Page 8 Electrical configuration The full scale can be adjusted without gain re-calibration by means of jumpers with fixed 0.1% precise amplifiers. Full scale Z: 1-2: +/- 0.1 g 3-4: +/- 0.2 g 5-6: +/- 0.5 g... -
Page 9: Offset Adjustment
GeoSIG Ltd GS_AC-23_UserManual_V14.docx/27.05.2019 AC-23 Accelerometer Manual Page 9 Offset adjustment: Offset Adjust Pin 12 Pin 1 Figure 7, Offset potentiometer location After the new full scale has been selected, the offset must be checked and eventually the potentiometer ° must to be re-adjusted to remove any small offset change at output. -
Page 10: Mounting (Downhole Sensor)
GeoSIG Ltd GS_AC-23_UserManual_V14.docx/27.05.2019 AC-23 Accelerometer Manual Page 10 Mounting (downhole sensor) The sensor must be installed in a 3-inch inclinometer tube. At least a 100 mm borehole must be drilled. Depending on the soil condition, it could be required to drill a higher dimension hole and to implement a 120 mm PVC casing to insure a free path when the inclinometer tube is inserted in the borehole. -
Page 11: Inclinometer Tube Installation
GeoSIG Ltd GS_AC-23_UserManual_V14.docx/27.05.2019 AC-23 Accelerometer Manual Page 11 Inclinometer tube installation Note: Do not scale the drawing. The number of sections is only an example. Inclinometer tube meters section. Sealing (concrete mix) of tube Coupling elements, fixed with “pop” rivets. Must be fully... -
Page 12: Sensor Installation
GeoSIG Ltd GS_AC-23_UserManual_V14.docx/27.05.2019 AC-23 Accelerometer Manual Page 12 Sensor installation Note: Do not scale the drawing. The number of sections is only an example. Cable The maximum water level above sensor must maximum meters. Concrete sealing of sensor. At least 1... -
Page 13: Inclinometer Casing Assembly
The water level in the inclinometer tube should be maximum 50 meters, including fast elevation due to heavy rain. It is recommended to use the optional assembly kit that GeoSIG can provide (optional) with the inclinometer tube. It will insure a perfect sealing of the tube elements and would avoid concrete mix to enter the tube. - Page 14 GeoSIG Ltd GS_AC-23_UserManual_V14.docx/27.05.2019 AC-23 Accelerometer Manual Page 14 The following elements will be inserted in the borehole. Figure 8 Torpedo (the sensor and its cable) Figure 9 Guiding system Figure Inclinometer tube...
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Page 15: Axis Orientation
GeoSIG Ltd GS_AC-23_UserManual_V14.docx/27.05.2019 AC-23 Accelerometer Manual Page 15 Axis orientation Z axis Engraved X axis mark Y axis Figure 11, Down hole axis orientation Before the sensor is inserted in the inclinometer tube, the guiding system must be mounted bellow it. The guiding system must be orientated before the insertion.