Guralp Systems CMG-3TB Manuals

Guralp Systems CMG-3TB Manuals

Manuals and User Guides for Guralp Systems CMG-3TB. We have 1 Guralp Systems CMG-3TB manual available for free PDF download: Operator's Manual

Guralp Systems CMG-3TB Operator's Manual

Guralp Systems CMG-3TB Operator's Manual (78 pages)

Three-Axis Seismometer

Brand: Guralp Systems | Category: Measuring Instruments | Size: 10 MB

Table of Contents

Table of Contents
2
1 Introduction

4
2 Assembling the Instrument

11
- Unpacking and Packing
  11
- Handling Notes
  11
- Assembling the 3TB
  12
- Disassembling the Instrument
  16
- Control Units
  17
  - The Breakout Box
    17
    
    Calibration
    18
    
    Mass Locking and Unlocking
    18
    
    Centring
    19
  - The Handheld Control Unit
    19
    
    Connections
    20
    
    Signal Meter
    20
    
    Calibration and Control
    21
    
    Banana Plugs
    21
  - The Inclinometer Monitor Unit
    21
- Operating the Hole Lock
  22
  - Engaging the Hole Lock
    23
  - Disengaging the Hole Lock
    24
  - Manual Operation
    24
3 Installing the 3TB in a Borehole

26
- Installing a Sensor with Hole Lock Unit
  26
- Installing a Sensor Using Sand Backfill
  31
  - Procedure
    32
- Assembling the Winch
  36
- Earthing a Borehole Sensor
  40
- Levelling and Centring
  46
- Downhole Orientation
  47
- 4 Calibrating the 3TB
  
  55
  - The Calibration Pack
    55
    
    Poles and Zeroes
    56
    
    Frequency Response Curves
    57
    
    Obtaining Copies of the Calibration Pack
    57
  - Calibration Methods
    58
  - Calibration with Scream
    58
    
    Sensor Response Codes
    62
  - Calibration with a Handheld Control Unit
    62
  - The Coil Constant
    63
- 5 Inside the 3TB
  
  64
  - The Sensors
    64
  - The Control System
    66
    
    Lock
    66
    
    Unlock
    67
    
    Centre
    69
  - The Feedback System
    70
    
    Hybrid Feedback
    71
    
    Conventional-Response Feedback
    72
    
    Comparisons
    72
- 6 Connector Pinouts
  
  74
- 7 Specifications
  
  76
- 8 Revision History
  
  78

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