Guralp Systems 3TB Manual
Güralp 3TB
Operator's Guide
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Table of Contents
1 Preliminary Notes...........................................................................................................4
1.1 Proprietary Notice......................................................................................................4
1.2 Warnings, Cautions and Notes..................................................................................4
1.3 Manuals and Software...............................................................................................4
2 Introduction.....................................................................................................................5
2.1 System configuration.................................................................................................
2.2 Digital orehole installations......................................................................................7
2.3 The hole lock system.................................................................................................8
2.3.1 The single-jaw hole lock.....................................................................................8
2.3.2 The three-jaw hole lock....................................................................................10
3 First encounters............................................................................................................11
3.1 Unpacking and packing...........................................................................................11
3.2 Handling notes.........................................................................................................11
3.3 Control units.............................................................................................................12
3.3.1 The reak-out ox............................................................................................12
3.3.2 The hand-held control unit...............................................................................14
3.3.3 The inclinometer monitor unit...........................................................................1
3.4 Operating the hole-lock...........................................................................................17
3.4.1 Disengaging the hole lock................................................................................18
3.5 The surge suppressor sonde...................................................................................20
3.6 Using Baffles............................................................................................................21
4 Installing the 3TB in a borehole..................................................................................22
4.1 Installing a sensor with hole lock unit......................................................................22
4.2 Installing a sensor using sand ackfill.....................................................................2
4.2.1 Procedure.........................................................................................................27
4.3 Assem ling the winch..............................................................................................31
4.4 Earthing a orehole sensor.....................................................................................35
4.4.1 Installations with AC power supplies...............................................................3
4.4.2 Installations with DC power supplies...............................................................38
4.4.3 External lightning protection.............................................................................40
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4.5 Levelling and Centring.............................................................................................40
4.6 Down-hole orientation..............................................................................................41
4.6.1 Installing the Scream! extension......................................................................42
4.6.2 Installing the reference instrument...................................................................42
4.6.3 Measuring the orientation................................................................................42
4.6.4 Applying automatic rotation..............................................................................48
5 Calibrating the 3TB.......................................................................................................51
5.1 The cali ration pack................................................................................................51
5.1.1 Poles and zeroes.............................................................................................51
5.1.2 Frequency response curves.............................................................................53
5.1.3 O taining copies of the cali ration pack..........................................................54
5.2 Cali ration methods.................................................................................................54
5.3 Cali ration with Scream!..........................................................................................55
5.3.1 Sensor response codes for 3TB instruments..................................................58
5.4 Cali ration with a hand-held control unit.................................................................58
5.5 The coil constant.....................................................................................................58
Inside the 3TB............................................................................................................... 0
6.1 The sensors............................................................................................................. 0
6.2 The control system.................................................................................................. 1
6.2.1 LOCK................................................................................................................ 2
6.2.2 UNLOCK........................................................................................................... 3
6.2.3 CENTRE........................................................................................................... 5
6.3 The feed ack system..............................................................................................
6.3.1 Hy rid feed ack............................................................................................... 7
6.3.2 Conventional-response feed ack.................................................................... 8
6.3.3 Comparisons.................................................................................................... 8
7 Connector pin-outs.......................................................................................................70
7.1 Break-out Box – Power connector..........................................................................70
7.2 Break-out Box – Recorder and Control connectors................................................71
7.3 Break-out Box – Sensor connector.........................................................................72
7.4 Instrument - Sensor Connector...............................................................................73
8 Specifications................................................................................................................74
9 Revision history............................................................................................................7
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1 Preliminary Notes
1.1 Proprietary Notice
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