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SatisGeo KT- 6 Instructions Manual

Kappameter field rock magnetic susceptibility meter
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Field Rock Magnetic Susceptibility Meter
tel/fax: +420 541 634 414
e-mail: info@satisgeo.com
www.satisgeo.com
KAPPAMETER
KT- 6
Instruction Manual
p o r t a b l e g e o p h y s i c a l i n s t r u m e n t s
Ječná 29a
621 00 Brno
Czech Republic

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  • Page 1 Field Rock Magnetic Susceptibility Meter KAPPAMETER KT- 6 Instruction Manual p o r t a b l e g e o p h y s i c a l i n s t r u m e n t s tel/fax: +420 541 634 414 Ječná...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS 1. GENERAL INFORMATION 1.1 Applications 1.2 Specifications 2. DESCRIPTION OF THE INSTRUMENT 2.1 Operating Principle 2.2 Design 3. OPERATION 3.1 Battery Instalation 3.2 Power ON/OFF 3.3 Measurement 3.4 Data Memory 3.5 Scan Mode 3.6 Low Battery Voltage Indication 3.7 Date and Time Set 3.8 Miscellaneous 4.
  • Page 3 4.1.3 Corrections for Surface Unevenness and for Finite Dimensions 4.1.4 Measurement on a Cylindrical Surface 4.2 Instructions for Measurement 4.2.1 Measurement on Outcrops 4.2.2 Piece Specimen Measurement 4.2.3 Drill Core Measurement 5. ERROR MESSAGES 6. MAINTENANCE 7. WARRANTY 8. CONNECTORS WIRING...

  • Page 4: General Information

    1. GENERAL INFORMATION 1.1 Applications The pocket susceptibility meter KT-6 is designed for quick field measurements of magnetic susceptibility of outcropping rocks, drill cores and larger pieces of rocks. The use of KT-6 is especially advantageous for selecting of suitable specimens for further precise laboratory studies of magnetic properties.
  • Page 5 Serial interface RS-232C: Baud rate: 9600Bd. Format: 10 bits (1 start, 8 data, 1 stop), no parity. Power consumption: 10 mA (average). Battery: 9 V alkaline, IEC standard type 6LF22. Ambient operating temperature: from -10 C to +55 Dimensions (diameter x length): 65 x 187 mm.
  • Page 6 Fig. 1. Principal elements of KT-6...

  • Page 7: Description Of The Instrument

    2. DESCRIPTION OF THE INSTRUMENT 2.1 Operating Principle The fundamental part of the instrument is an LC oscillator of 10 kHz, the inductivity of which is embodied by a flat measuring coil situated at the active face of the instrument. The susceptibility measurement is performed in two steps.

  • Page 8: Operation

    3. OPERATION 3.1 Battery Instalation Caution: • Before any manipulation with the battery, the instrument must be turned off. The instrument is powered by one 9 V battery type 6LF22 IEC standard. The battery is housed in the rear compartment of the instrument. The covering lid can be removed by unscrewing the fixing screw.

  • Page 9: Power On/Off

    3.2 Power ON/OFF The instrument can be switched on by pressing [any] touch switch. The buzzer beeps and the display shows the stand-by status: Fig. 2 Fig. 3 while the switch is held down. This is also a test of the display.

  • Page 10: Measurement

    Fig. 4 If the display does not show the pattern given in Fig. 2 or Fig. 3 or Fig. 4 and fails to do so even if the instrument is switched on and off several times. proceed according to section 5. The instrument is switched off automatically 40 seconds after the last pressing a switch.
  • Page 11 Fig. 5 The character ‘ ’ indicates that the instrument is cleared. The digits give the number of readings stored in the memory - see section 3.4. The measurement must then be completed within 10 s, otherwise the instrument reverts to the stand-by status and the display shows the time.
  • Page 12 Fig. 7 Fig. 8 If the susceptibility is lower than –999 x 10 SI units or higher than 9999 x 10 SI units, the instrument will display the error condition: Fig. 9 A negative value of the susceptibility measured in the free space lower than -0.01 x 10 SI units may suggest that the instrument does not work properly.

  • Page 13: Data Memory

    Fig. 10 and the clear/measure sequence can proceed as described above. 3.4 Data Memory Up to 70 measured susceptibility values with the date and time of the measurement can be stored in the data memory. The displayed value is automatically stored in the memory if the [C/M] switch is pressed again, i.
  • Page 14 From this moment all further measurements are flagged by the character ‘ ’ (full): Fig. 12 Storing this data in the memory causes the first stored value to be pushed out, so that always the last 70 measurements are stored in the data memory (i.e. FIFO - first in first out).
  • Page 15 After the oldest value the notice ‘ ’ is displayed: Fig. 14 warning the operator that another pressing of the [RCL] switch clears the whole memory and the instrument reverts to the stand-by status. If the [C/M] switch is pressed instead, the contents of the memory will be retained.

  • Page 16: Scan Mode

    Instructions: • Connect the serial output of KT-6 with the COM port of the computer. • Switch on the KT-6. • Start the program Kmdata.exe. • Select the COM1 or COM2 or other if necessary (item Data - Setup in the main menu), •...
  • Page 17 hold it down, place the instrument against a rock, simultaneously press the RCL switch and then release both switches. The scan mode stops when the [C/M] switch is kept pressed for about 0.5 s. Note: • Variations of the ambient temperature cause changes in the inductivity of the measuring coil and consequently changes in the oscillator frequency.

  • Page 18: Low Battery Voltage Indication

    3.6 Low Battery Voltage Indication If the battery voltage drops below 5.3 V, the character ‘ ’ appears at the most left position of the display. The battery condition is tested at switching the instrument on and each time the susceptibility value is displayed. Fig.

  • Page 19: Miscellaneous

    3.8 Miscellaneous The instrument should be protected from heavy shocks and kept clean. Special attention should be paid to the condition of the battery contacts. An unreliable contact can depreciate proper operation of the instrument. Both touch switches are very sensible so that only moderate pressure is needed for switching.

  • Page 20: Measuring Methods

    4. MEASURING METHODS 4.1 Measured Value and Corrections 4.1.1 True and Apparent Susceptibility The value measured with the KT-6 depends on the size and shape of the rock object. The instrument KT-6 is calibrated for the idealized case in which the pick-up coil is attached to an absolutely smooth plane confining a half-space filled with magnetically homogeneous and isotropic medium.

  • Page 21: Effect Of The Gap Between The Active Face Of The Instrument And The Rock Surface

    4.1.2 Effect of the Gap between the Active Face of the Instrument and the Rock Surface When the active face of the instrument is not close to the surface of the measured rock, the value indicated is lower than the true susceptibility. In Fig. 16 the relative decrease of the displayed susceptibility value versus the distance between the active face and the rock surface is plotted.

  • Page 22: Corrections For Surface Unevenness And For Finite Dimensions

    4.1.3 Corrections for Surface Unevenness and for Finite Dimensions Corrections for the surface can be derived from Fig. 16. The surface unevenness is the ‘peak-to-pit’ difference, i. e. the difference between the highest peak and the deepest pit in the area to which the KT-6 is attached during measurement.

  • Page 23: Measurement On A Cylindrical Surface

    surfaces with the diameter of the inscribed circle smaller than 60 mm. The values measured on the surface with finite dimensions can be corrected using Table 2. The value measured should be multiplied by the respective correction factor. Table 2 Rock object Correction [mm]...

  • Page 24: Instructions For Measurement

    Table 3 Diameter of Correction [mm] factor core 1.63 1.53 1.46 1.41 1.38 1.35 1.33 4.2 Instructions for Measurement 4.2.1 Measurement on Outcrops In measuring on outcrops it is necessary to consider the degree of weathering of the surface which affects the results considerably.

  • Page 25: Piece Specimen Measurement

    4.2.2 Piece Specimen Measurement It is not recommended to measure samples less than 50 mm thick, with a surface smaller than the KT-6 face (60 mm). If the diameter of the circle approximating the measured surface is smaller than 100 mm, it is necessary to correct the measured value - see Table 2.

  • Page 26: Error Messages

    5. ERROR MESSAGES The instrument functions are checked. The following messages indicating error conditions may be displayed. E 00 Overflow of the display range E 10 Data memory failure E 11 Data format failure E 51 Invalid PC command E 55 Communication error (RS-232C) E 81 The instrument cannot be switched off...

  • Page 27: Maintenance

    6. MAINTENANCE Caution: • The instrument can be damaged by a strong static charge. The KT-6 is a sophisticated measuring instrument. Trouble shooting is rather complicated and cannot be conducted without special electronic equipment. That is why the manufacture strongly recommends to all users to make no encroachments upon the KT-6 electronics.

  • Page 28: Warranty

    7. WARRANTY All SatisGeo instruments are warranted against defective materials and workmanship for one year. Any questions with respect to the warranty should be taken up with your distributor or SatisGeo representative. All requests for repairs and replacement parts should be SatisGeo, s.r.o.,...

  • Page 29: Connectors Wiring

    8. CONNECTORS WIRING ◊ Connector on interface cable for PC connection: EXPLANATION KT-6 (female) PIN NO. PIN NO. connector (jack) PIN NO. case Transmitted data Received data middle (two pins connected) (two pins connected) 6-20...

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