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Summary of Contents for AGICO JR6
- Page 1 Ver. 2.2 May 2004 SPINNER MAGNETOMETER JR6 / JR6A User’s Manual Instrument for measuring remanent magnetization AGICO Advanced Geoscience Instruments Co. Brno Czech Republic...
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Page 2: Table Of Contents
Contents Contents ..............................1 Warranty .............................3 GENERAL SAFETY SUMMARY ................4 Convention............................4 Injury Precautions ..........................4 Product Damage Precautions ......................4 1. INTRODUCTION ....................6 1.1 Unpacking Instructions ........................7 1.2 Storage and Transportation......................7 2. JR-6 / JR-6A SPECIFICATIONS ................. 8 3. - Page 3 6.1 Shape and size of the specimen ....................23 6.2 Marking of specimens.........................23 6.3 Measurement in four positions ....................23 6.4 Measurement in two and six positions..................25 6.5 Measurement with auto holder ....................28 6.6 Measurement with semi-auto holder...................29 7. ADDITIONAL INFORMATION ................ 30 7.1 Data File Format .........................30 7.2 Orientation Parameters .......................32 7.3 Maintenance and Repairs......................34...
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Page 4: Warranty
This warranty is given by AGICO with respect to this product in lieu of any other warranties, expressed or implied. AGICO and its vendors disclaim any implied warranties of merchantability or fitness for a particular purpose. -
Page 5: General Safety Summary
General Safety Summary Review the following safety precautions to avoid and prevent damage to this product or any products connected to it. Only qualified personnel should perform service procedures. Convention Symbol is used to draw attention to a particular information. Attention Symbol is used to accent important instruction, omission of which... - Page 6 Use Proper Fuses only. Do not use fuses which are not specified by the manufacturer. If a fuse with a different characteristics or value is used, the protection is not effective. Operator’s Training. Operator should be familiar with operation of the instrument and Safety Regulations.
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Page 7: Introduction
1. Introduction The JR-6 / JR-6A dual speed spinner magnetometer is an innovated version of the spinner magnetometer series JR-5 / JR-5A. It is used as a laboratory instrument for measurements of remanent magnetization (RM) of rock specimens in studies of magnetic properties of rocks. -
Page 8: Unpacking Instructions
1.1 Unpacking Instructions Remove carefully the instrument and its accessories from the box and packing material, referring to the packing list included to confirm that everything has been delivered. Briefly inspect each item for shipping damage. If anything is missing or damaged, contact the manufacturer or your dealer immediately. -
Page 9: Jr-6A Specifications
2. JR-6 / JR-6A Specifications Specimen nominal size automatic holder manual holder Cylinder Diameter 25.4 mm 25.4 mm (+0. 1 , -0. 5) (+0. 5, -1. 0) 25.0 mm (+0. 1 , -0. 5) Length 22.0 mm 22.0 mm (+0. 5 , -1. 0) (+1. -
Page 10: Description
3. Description The JR-6 / JR-6A spinner magnetometer consists of a Power Supply Unit and a combined Pick-up and measuring Unit. 3.1 Measuring Principle Rock specimen of defined size and shape rotates at a constant angular speed in the pick- up unit inside a pair of coils. - Page 11 The mechanical part of the pick-up unit consists of a base plate, a trapezoidal plate on which the motor and the bearing of the drive shaft are mounted, two circular plates with spinner system, and a square plate with pick-up coils and permalloy shield. Fig.
- Page 12 The motor rotation is transferred by the driving belt. The speed of specimen rotation is derived from a crystal oscillator. Fig. 3.2 Pick-up Unit, square plate dismantled Fig. 3.3 Detailed view to screen...
- Page 13 Fig. 3.4 Spinner System...
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Page 14: Specimen Holder
3.3.1 Specimen holder The new version of spinner pick-up unit permits easy installation of the specimen holders via a bayonet attachment of the specimen holder shaft. This new bayonet spindle speeds up and simplifies the manipulation with the specimen holder. Holder installation process: Press and hold the ”lock button”... - Page 15 Press down slightly and at the same time turn the holder clockwise until the drive pin slides into a notch of the holder. At this moment, press slightly more strongly downwards (see Fig. 3.6a) to overcome the pressure of an elastic pad under the shank of the holder until the drive pin fits into a horizontal part of the bayonet groove (see Fig.
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Page 16: Installation Procedures
4. Installation Procedures The first installation and training is performed exclusively by the AGICO technician or by the authorised representatives. If you need later to reinstall the apparatus, due to the removing the instrument to another place or other reasons, be sure the following conditions are met to achieve guaranteed parameters. - Page 17 Fig. 4.1 Put the pick-up unit on stable solid Fig. 4.2 …and remove red retaining screws … stands … Fig. 4.3 … pulling them down … Fig. 4.4 … and remove all red washers.
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Page 18: Interconnection Of Units
4.2 Interconnection of Units Be sure the instrument is unplugged from mains during connecting or disconnecting the cables. A cable with 15-pin trapezoid connectors (power cable) is plugged into the rear panel of the power supply unit and pick-up unit. A cable with 9-pin female connectors (data cable) interconnects serial channel of your computer with the pick-up unit. -
Page 19: Operation
Semi-automatic holder or Automatic holder in case of JR-6A magnetometer. Program generates the Text file with ext. [.TXT] in the same format as displayed on the screen and the Data file [.JR6], which can be used as an input file for the Advanced Data Interpretation by software REMASOFT. - Page 20 geological file, one is asked to enter them from the keyboard manually. In case of F3 no transformation to geographical coordinate system is calculated and results are presented in the specimen coordinate system only. Then the list of files which are ready for output and input are listed. Next after pressing any key the program tests communication with instrument via serial channel.
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Page 21: Setting The Parameters
5.1.1 Setting the parameters The following function keys enable to set configuration parameters: F2 - Serial Communication Port Number [ 1 / 2 ] This function is available only in case the current serial communication port does not communicate, then it is rewritten by Tectonic Correction function (see next). F2 - Tectonic Correction [ None, Tilt, Full ] You can set which correction is calculated. -
Page 22: Calibration
5.1.2 Calibration The magnetometer calibration is a measurement of the standard which yields the gain and phase for calculating the remanence vector components. The calculated calibration constants can be saved in configuration file PARJR6.CFG. Without calibration a maximum possible phase error of 1.5% could combine with the intensity error of 3.5% due to laboratory temperature change. -
Page 23: Measurement Routine
5.1.4 Measurement routine Measurement routine is invoked by the MEAS key F1. Then you are asked to enter specimen name, magnetization note and specimen angles and in the case the tilt or full tectonic correction is preset, also two or four tectonic angles (two angles for foliation and two angles for lineation). -
Page 24: Measurement
6. Measurement 6.1 Shape and size of the specimen The nominal specimen is either a cube with an edge of 20 mm or a cylinder 25.4 mm (1 inch ) in diameter, 22 mm long. Calibration relates to the respective volume of the specimen. - Page 25 Measuring steps: Check if proper holder type is set. Be sure the instrument is properly calibrated and correct parameters are set. You may execute the Correction for the holder, but it is not necessary. Without Correction, data measured in the individual positions may be influenced by residual holder values, but the final result is correct due to the position design of manual positioning with respect to the holder.
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Page 26: Measurement In Two And Six Positions
The specimen is placed in the holder in position No.2 and the measurement continues by depressing P2 key. After measurement in current position the holder with specimen stops in the angular position corresponding to the next measuring position (i.e. the arrow on the holder is on the reverse side of the holder (Fig. 6M) provided the position higher than No.2 is the following). - Page 27 Fig.6M M A N U A L H O L D E R POSITION SPECIMEN HOLDER MEASURED POSITION SPECIMEN HOLDER NUMBER POSITION POSITION COMPONENTS NUMBER POSITION POSITION …………………………………………………………………………………………………………….. Fig.6A A U T O M A T I C H O L D E R POSITION SPECIMEN MEASURED...
- Page 28 Fig. 6.M1 Manual holder Pos.1 Fig. 6.M2 Manual holder Pos.2 Fig. 6.M3 Manual holder Pos.3 Fig. 6.M4 Manual holder Pos.4 Fig. 6.M5 Manual holder Pos.5 Fig. 6.M6 Manual holder Pos.6...
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Page 29: Measurement With Auto Holder
6.5 Measurement with auto holder See also the chapter 6.3 Measurement in four positions for operation details. Put the specimen into the automatic holder in the position No.1 and secure the specimen by a small screw on the right side of the rotating core using the special screwdriver. -
Page 30: Measurement With Semi-Auto Holder
6.6 Measurement with semi-auto holder Measurement with semi-auto holder may be useful in case of some malfunction of the auto-position manipulator. See also the chapters 6.3 Measurement in four positions and 6.5 Measurement with auto holder for operation details. The individual positions have to be set manually, the advantage may be that the specimen is fixed in the holder only once. -
Page 31: Additional Information
REMA6.EXE program. The sense and description of individual orientation parameters is explained in the following chapter. The format of a record is as follows (file with extension .JR6): chars name of specimen... - Page 32 (e.g. by the advanced processing interpretation program REMASOFT). The data file has the name of the locality, entered by the user, with the .JR6 fixed extension. The file is ASCII coded and a line (one record) is reserved for each specimen.
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Page 33: Orientation Parameters
7.2 Orientation Parameters Parameter P1 It is clock value of the direction of the fiducial mark drawn on the frontal side of cylinder. This arrow is X1 axis of the specimen coordinate system. The orientation of the arrow may, or need not, be measured. P1=12 P1=3 P1=6... - Page 34 Examples: Agico system: P1 = 12 fiducial mark is oriented upwards P2 = 90 plunge of cylinder axis is measured P3 = 6 azimuth of dip of frontal plane is measured in the field P4 = 0 azimuth of dip and dip of mesoscopic foliation are measured...
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Page 35: Maintenance And Repairs
7.3 Maintenance and Repairs Regularly clean the interior of the pick-up unit and the cover and keep them absolutely clean - use a vacuum cleaner, do not use pressure air. Sometimes rinse the holder in clean water with small amount of detergent and dry it up. Demagnetize the holder in AC magnetic field of several tens of kA/m, if needed. -
Page 36: Pick-Up Unit - Setting Up
It is recommended to clean regularly the specimen holder. Do not measure strong and weak specimens indiscriminately. In special cases clean the holder more frequently, even several times a day, if needed. The automatic holder requires especially great care; check the cleanliness of the hexagonal opening and of the holder shank before installation of the holder. - Page 37 Check the clearence between the holder and the coils; in case the holder touches the coils, the system can vibrate. Fig. 7.2 Coils-holder symetry It is possible to make correction by changing the height of three adjustable screws which bear the circular plate (see Fig.
- Page 38 Check that the drive belt does not touch the pulley bearing-box. Fig. 7.3 Clearence drive belt-bearing Fig. 7.3a Two screws fixing bearing For secure, reliable and smooth instrument running, the shaft of the spinner system and the shaft of the pulley must be coaxial. If necessary, the pulley can be set in the horizontal plane after loosening two screws.
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Page 39: Program Jr6Test
7.3.2 Program JR6TEST JR6TEST.EXE sends individual command to the instrument and displays received message. The port for serial communication and necessary parameters are preset in the file PARJR6T.CFG. The file is ASCII coded file. Edit the file using simple text editor if needed. -
Page 40: Auto-Position Manipulator - Setting Up
7.3.3 Auto-Position Manipulator – Setting up This chapter describes troubleshooting and probable reasons for improper function of the auto-position manipulator and necessary correction The correct function of the auto-position manipulator depends on the correct setting of mechanical parts. The axis of the hexagonal opening in the holder ring and the axis of the hexagonal key of the manipulator must be identical. - Page 41 The holder stops in the incorrect angular position with respect to the axis of the hexagonal key - incorrect main azimuthal position in horizontal plane (see Fig. 7.4). The axis of the ring and the axis of the hexagonal key must lie in the same vertical plane.
- Page 42 If it does not, loosen three nuts M3 fixing the rotational system (see Fig. 7.5a), which are under the square plate and turn the spinner system around a slight amount clockwise or anti-clockwise to set the proper azimuthal position. Turn the tool by hand to various angular positions in horizontal plane and check the proper function of the i command again.
- Page 43 Check: Raise the hexagonal key to the working position by using command w. Execute the y command which set the screen to the position corresponding the specimen position No.1. Install the tool for hexagonal key adjustment with the dot upwards. If the screen is properly set the mark lies in the axis of column supporting the coils, see Fig.
- Page 44 The axis of the hexagonal opening and the axis of the hexagonal key in the same vertical plane are not identical (see Fig. 7.8). It is assumed the axis of the ring and the axis of the hexagonal key lie in the same vertical plane (see Point 1 and Fig.
- Page 45 Note that this adjustment is very sensitive. Be sure the columns does not turn while tightening the nuts. Hold them by inserting a metal rod into the hole in the appropriate column. After tightening the nuts perform following test. Holder is installed, execute i command, raise the manipulator to working position using w command and set individual positions by using the command t.
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Page 46: Appendices
8. Appendices 8.1 List of Errors This is a list of errors sent by instrument. wrong or missing index pulse (1x) wrong or missing pulses (100x) insufficient speed of rotation not used wrong or missing index pulse (setting of the holder to main azimuthal position failed) setting of the auto-position manipulator to working (up) or rest (down) position failed wrong or missing pulse 3x120 of auto-position manipulator (setting of the auto-position manipulator to next position failed) -
Page 47: Configuration File Parjr6.Cfg
8.2 Configuration file PARJR6.CFG This file is necessary for program REMA6.EXE and should be present in current working directory. Here is a example of the ASCII coded format free file. Serial Communication Port Number [ 1 / 2 ] Orientation Parameters 8.00 Specimen Volume 7.68... -
Page 48: Ec Declaration Of Conformity
8.4 EC Declaration of Conformity AGICO, s.r.o., Ječná 29a, CZ - 621 00 Brno, IČO 607 313 54, declare that the product: Name: Spinner Magnetometer with Automatic Manipulator Type: JR-6A Modification: JR-6 Manufacturer: AGICO, s.r.o., Ječná 29a, CZ - 621 00 Brno, IČO 607 313 54 Place of producing: AGICO, s.r.o., Ječná... -
Page 49: Accessories
Pick-up unit power cable 1 pc Serial cable RS-232C (9/9) 1 pc CD with measuring software, application software and manuals 1 pc AGICO Print No. 6 1 pc Instruction Manual 1 pc Warranty Certificate 1 pc Optional : Automatic specimen holder 25 mm cylinder (red arrow)
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