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Geometrics Memory-Mag G-856AX - User Manual
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G-856AX
Memo
ry-Mag
Proton
Precession
Magneto
meter
P/N
18101-02
Rev.
E
Operation
Manual
GEOMETRIC
S,
INC.
2190
Fortune
Drive,
San
Jose,
CA
95131
Phone:
(40
8)
954-0522
Fax:
(408)
95
4-0902
Email:
sales@mail.geo
metrics.com
Web:
www.geo
metrics.com
COPYRIGHT
©
2007
.
2
Table of Contents
Main Page
Default Chapter
3
Table of Contents
3
Introduction
7
What Is a Total Field Magnetometer
7
Magnetometer Applications
7
Terms Used in this Manual
8
The G-856Ax
8
Magnetometer Set-Up
11
Sensor Fluids
11
Standard System Assembly
12
Figure 1. G-856 Proton-Precession Magnetometer
12
Figure 2. Sensor Staff Sections
13
Figure 3. Sensor Preparation
13
Figure 4. Staff / Sensor Assembly
14
Figure 5. Console Battery Compartment
14
Figure 7. G-856 Shoulder Harness
15
Figure 8. Assembled Magnetometer
15
Gradiometer Assembly
16
Figure 9. Location of 'Read' Key on Magnetometer Console
16
Figure 10. Gradiometer Components
16
Figure 11 Removing Standard Sensor Cable from Top Sensor
17
Figure 12. Top Sensor with Gradiometer Cable Attached
17
Figure 13. Bottom Sensor with Gradiometer Cable Attached
17
Figure 14. Connection of Threaded Staff Adaptors
18
Figure 15. Completed Gradiometer Staff
18
Base-Station Assembly
19
Figure 16. Attach the Gradiometer Switch Box
19
Sensor Orientation
20
Figure 17. Base-Station Setup up Using Tripod Kit and G-856AX Staff Section
20
Figure 18. Alternate Orientation for G-856AX Sensor Mount
21
Figure 19. Magnetic Inclination of the Earth's Field
21
Console Set-Up
22
Console Controls and Display
22
Figure 20. G-856AX Console Display and Keypad
22
System Checkout
23
Operating Procedures
23
Clearing a Key Sequence
23
Setting the Internal Clock
23
Setting the Line Number Marker
24
Manual Tuning of the Magnetometer
25
Figure 21. Magnetic Field Intensity Variation, (Nt)
26
Automatic Tuning
27
Acquiring and Storing a Magnetic Field Reading
28
Recalling Measurements from Memory
28
Table 1. an Example of the Console Memory Stack
29
Erasing Magnetometer Readings
30
Automatic Reading Set-Up
31
Retrieving Magnetic Field Readings
32
Field Operation
35
Sensor Position and Measurement Repeatability
35
Magnetic Environment
36
Magnetic Surveying
36
Standard Operation
36
Figure 22, Typical Survey Layout
37
Gradiometer Operation
38
Data Retrieval
39
Computer Connection and Download
39
Manual Transcription
40
Maintenance
41
Instrument Storage
41
Voltage Indicator
41
Batteries
41
D-Cells Batteries
42
Table 2. Battery Endurance Comparison
42
Gel-Cell Batteries
43
Lithium Battery
43
Sensor Fluid
44
Appendix
47
Magnetic Field Inclination (Degrees)
47
Magnetic Field Intensity Variation (Nt)
47
Troubleshooting
48
Rs-232 Interface
49
Table 3. RS-232 Cable Connector Pin Assignment
49
Front Panel Connector Pin Assignment
50
Output Format
50
External Power
51
External Magnetometer Control
51
Internal Programming Switches
52
Figure 23. Location of Console's Internal Programming Switch
52
Polarize and Count Time - Switches 1 through 4
53
Table 4. Summary of Programmable Switch Settings
53
Internal Reset Switch
55
Specifications
56
Figure 24. Internal Reset Switch
56
Warranty and Service
58
Declaration of Conformity
60
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Geometrics Memory-Mag G-856AX Specifications
General
Brand
Geometrics
Model
Memory-Mag G-856AX
Category
Measuring Instruments
Language
English
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