Geokon GK-604D User manual

GK-604D | aos
Inclinometer Readout
Application
User’s Manual
No part of this instruction manual may be reproduced, by any means, without the written consent of Geokon, Inc.
The information contained herein is believed to be accurate and reliable. However, Geokon, Inc. assumes no responsibility
for errors, omissions or misinterpretation. The information herein is subject to change without notification.
Copyright © 2017-2018 by Geokon, Inc.
(Doc Rev C, 4/13/2018)

Warranty Statement
Geokon, Inc. warrants its products to be free of defects in materials and workmanship, under normal
use and service for a period of 13 months from date of purchase. If the unit should malfunction, it
must be returned to the factory for evaluation, freight prepaid. Upon examination by Geokon, if the
unit is found to be defective, it will be repaired or replaced at no charge. However, the WARRANTY
is VOID if the unit shows evidence of having been tampered with or shows evidence of being
damaged as a result of excessive corrosion or current, heat, moisture or vibration, improper
specification, misapplication, misuse or other operating conditions outside of Geokon's control.
Components which wear or which are damaged by misuse are not warranted. This includes fuses and
batteries.
Geokon manufactures scientific instruments whose misuse is potentially dangerous. The instruments
are intended to be installed and used only by qualified personnel. There are no warranties except as
stated herein. There are no other warranties, expressed or implied, including but not limited to the
implied warranties of merchantability and of fitness for a particular purpose. Geokon, Inc. is not
responsible for any damages or losses caused to other equipment, whether direct, indirect, incidental,
special or consequential which the purchaser may experience as a result of the installation or use of
the product. The buyer's sole remedy for any breach of this agreement by Geokon, Inc. or any breach
of any warranty by Geokon, Inc. shall not exceed the purchase price paid by the purchaser to Geokon,
Inc. for the unit or units, or equipment directly affected by such breach. Under no circumstances will
Geokon reimburse the claimant for loss incurred in removing and/or reinstalling equipment.
Every precaution for accuracy has been taken in the preparation of manuals and/or software, however,
Geokon, Inc. neither assumes responsibility for any omissions or errors that may appear nor assumes
liability for any damages or losses that result from the use of the products in accordance with the
information contained in the manual or software.

Table of Contents
1. Introduction .............................................................................................. 1
1.1 Features...........................................................................................2
1.2 GK-604D | aos ..................................................................................4
1.2.1 Compass Probes............................................................................................................5
1.3 Before using the GK-604D|aos ............................................................6
2. Installation and Operation......................................................................... 7
2.1 Initial Start Sequence.........................................................................7
2.2 Establishing Contact with the Remote Module......................................11
2.3 Installing the GK-604D | aos Application ............................................14
2.3.1 Installing GK-604D | aos from Google Playstore ........................................ 15
2.3.2 Installing GK-604D | aos via USB link to Host PC........................................ 17
2.4 Starting the GK-604D | aos for the first time ......................................18
3. User Interface..........................................................................................25
3.1 Overview........................................................................................25
3.2 APP Menu .......................................................................................26
3.2.1 Live Readings.............................................................................................................. 27
3.2.2 Terminal Window....................................................................................................... 38
3.2.3 About GK-604D.......................................................................................................... 39
3.2.4 System Configuration.............................................................................................. 41
3.3 FILE Menu ......................................................................................46
3.3.1 Export Menu ................................................................................................................ 46
3.3.2 Import Menu................................................................................................................ 51
3.3.3 View Data..................................................................................................................... 54
3.4.4 Delete............................................................................................................................. 61
4. Configuration Elements ............................................................................62

4.1 Hole Configuration...........................................................................63
4.2 Probe Configuration.........................................................................66
4.3 Project Configuration .......................................................................68
5. Files, Folders and Transferring Data ......................................................... 69
5.1 File Transfer ...................................................................................69
6. Maintenance............................................................................................ 70
.................................................................................................................... 70
6.1 O-ring............................................................................................70
6.2 Wheel assemblies............................................................................70
6.3 Water entry.................................................................................... 71
6.4 Zero shift changes........................................................................... 71
6.5 Self calibration check.......................................................................71
7. Troubleshooting...................................................................................... 72
7.1 “Probe connection failure…”..............................................................72
7.2 Common Troubleshooting Solutions................................................... 74
APPENDIX A. Inclinometer Theory ............................................................... 75
A.1. Inclinometer Theory .......................................................................75
A.2 Conducting the survey.....................................................................78
A.3 Checksums and “Face Errors” on Inclinometer Probes.......................... 79
A.3.1 Effect of “Face Error” on reading accuracy.....................................................80
A.3.2 Measurement of “Face Error” ..............................................................................81
A.3.3 Setting of the “Face Error” to zero....................................................................81
A.3.4 Conclusion .................................................................................................................... 82
APPENDIX B. Data File Format ..................................................................... 83
B.1 Hole Data .GKN File Format..............................................................83

APPENDIX C. Text Reports............................................................................85
C.1 Axis Profile Data Report (.CSV) .........................................................85
C.2 Axis Deflection Data Report (.CSV)....................................................86
APPENDIX D. Remote Module Command Structure......................................87
APPENDIX E. Data Reduction Formulas........................................................90
E.1. Deflection Calculation......................................................................90
E.2. Profile Calculation...........................................................................92
E.3. GTILT Users...................................................................................93
E.4. SiteMaster Users ............................................................................93
APPENDIX F. Technical Specifications
....................................................................................................................94
F.1. GK-604D Digital System Specifications..............................................94
F.1.1 Compass Sensor Specifications............................................................................ 95
F.2. Analog Probe System Specifications ..................................................96
F.3. Android Device Minimum Specifications .............................................97
APPENDIX G. Compass Probe Operation......................................................98
G.1 Inclinometer/Compass Probe (6100D-X) ............................................98
G.1.1 Calibrate Compass.................................................................................................. 102
G.2 Compass Survey Data....................................................................104

Table of Figures
Figure 1 – Model GK-604D, Digital Inclinometer System .......................................................................1
Figure 2 - Model 6000-2 Control Cable (top) ......................................................................................... 2
Figure 3 - Pulley style cable grip ............................................................................................................. 3
Figure 4 - Cable holds (obsolete)............................................................................................................ 3
Figure 5 – Android Field Device running GK-604D|aos.......................................................................... 4
Figure 6 - 6000/6100 type probe............................................................................................................5
Figure 7 - GK-604-4 Interface .................................................................................................................5
Figure 8- New Probe Found.................................................................................................................... 9
Figure 9 - Initial Probe Settings .............................................................................................................. 9
Figure 10 - No Probe Association Screen .............................................................................................10
Figure 11 - Android Device Settings Screen..........................................................................................11
Figure 12 - Bluetooth Pairing Screen....................................................................................................12
Figure 13 - Bluetooth Pairing Request Screen......................................................................................13
Figure 14 - Paired Devices .................................................................................................................... 13
Figure 15 - Google Play Store Application ............................................................................................15
Figure 16 - Geokon GK-604D | aos Install Screen ................................................................................ 16
Figure 17 - Initial Screen.......................................................................................................................18
Figure 18 - Workspace Settings Screen ................................................................................................19
Figure 19 - Probe Library Settings Screen ............................................................................................20
Figure 20 - Workspace and Probe Library Created ..............................................................................21
Figure 21 - Select Workspace ...............................................................................................................22
Figure 22 - Projects Screen...................................................................................................................23
Figure 23 - Holes Screen.......................................................................................................................23
Figure 24 - Hole Settings Screen........................................................................................................... 24
Figure 25 – Main Screen.......................................................................................................................25

Figure 26 - APP Menu .......................................................................................................................... 26
Figure 27 - Remote Module Power-On Reminder ............................................................................... 27
Figure 28 - Remote Module Connection Problem ............................................................................... 28
Figure 29 - Temporary File Data Prompt ............................................................................................. 29
Figure 30 - Live Readings Screen.......................................................................................................... 30
Figure 31 - Unsaved Data Prompt........................................................................................................ 31
Figure 32 - Saving Temporary Data...................................................................................................... 32
Figure 33 - Load Previous Data Prompt ............................................................................................... 32
Figure 34- Menu Options (Live Readings screen) ................................................................................ 33
Figure 35 - Live Readings Menu Options (Compass Enabled).............................................................. 34
Figure 36 - Viewing Compass Data....................................................................................................... 35
Figure 37 - Viewing Inclinometer Data ................................................................................................ 35
Figure 38 - View Previous Survey......................................................................................................... 36
Figure 39 - Meta Data Editor................................................................................................................ 37
Figure 40 - Meta Data Editor (Screen 2) .............................................................................................. 37
Figure 41 - Terminal Window .............................................................................................................. 38
Figure 42 - About GK-604D IRA............................................................................................................ 39
Figure 43 - Remote Module/Probe Status........................................................................................... 40
Figure 44 - System Configuration......................................................................................................... 41
Figure 45 - Unstable Indication............................................................................................................ 42
Figure 46 - File Menu ........................................................................................................................... 46
Figure 47 - Survey Export Options ....................................................................................................... 47
Figure 48 - Survey List .......................................................................................................................... 48
Figure 49 - Export Folder Selection...................................................................................................... 48
Figure 50 - Share Via Screen ................................................................................................................ 49
Figure 51 - Email Message Screen ....................................................................................................... 50

Figure 52 - Import File Selection...........................................................................................................51
Figure 53 - Importing Screen ................................................................................................................52
Figure 54 - Select View Options Screen................................................................................................54
Figure 55 – Report Type List.................................................................................................................55
Figure 56 - View Options Screen (Selecting 2 Surveys) ........................................................................55
Figure 57 - Raw Data Report ................................................................................................................56
Figure 58 - Axis Profile Report.............................................................................................................. 57
Figure 59 - Axis Deflection Report........................................................................................................ 58
Figure 60 - Axis Profile Plot................................................................................................................... 59
Figure 61 - Axis Deflection Plot.............................................................................................................60
Figure 62 - Delete Warning Message ...................................................................................................61
Figure 63 - Hole Parameters (Screen 1)................................................................................................64
Figure 64 - Hole Parameters (Screen 2)................................................................................................65
Figure 65 - Probe Parameters Screen...................................................................................................67
Figure 66 - Upload Settings .................................................................................................................. 67
Figure 67 - Project Parameters Screen.................................................................................................68
Figure 68 – Wheel lubricant (ADH-106 Belray Waterproof Grease Type 99540) ................................ 70
Figure 69 – Greasing wheels.................................................................................................................70
Figure 70 - Probe Connection Failure................................................................................................... 72
Figure 71 - Inclinometer Casing (end view)..........................................................................................75
Figure 72 - Inclinometer Probe.............................................................................................................76
Figure 73 - Inclinometer Survey Description........................................................................................77
Figure 74 - Plot of Borehole Deflection ................................................................................................77
Figure 75 – Digital Inclinometer/Compass Probe (6100D-X) ...............................................................98
Figure 76 – Compass Enable Message................................................................................................100
Figure 77 - Live Compass Data............................................................................................................101

Figure 78 - Initial Calibration Screen.................................................................................................. 102
Figure 79 - Calibration Routine ......................................................................................................... 103

1
1. Introduction
The GK-604D is made up of three components:
•The Readout Unit, consisting of a smart phone or other Android device running the
GK-604D|aos Inclinometer Readout Application (see Figure 1 and Figure 5).
•The GK-604D Remote Module, housed in a weather-proof reel enclosure containing
the cable that directly connects to the inclinometer probe (see Figure 1).
•The inclinometer probe, either analog or digital. See Figure 1 (digital, 6100D-X) and
Figure 6 (analog, 6100-1X).
Figure 1 – Model GK-604D, Digital Inclinometer System
The Android readout unit and Remote Module components communicate wirelessly using
Bluetooth®, a reliable digital communications solution. This simplifies the handling of the
system in the field as well as simplifying the transfer of data to your PC workstation for
final analysis.

2
1.1 Features
Readout based on an Android device:
•Users will feel familiar with the Android operating system that is common to
many smart phones.
•Long battery life, easily charged with micro USB cable.
•Ease of use.
Lightweight and simple Remote Module:
•Lithium battery (40+ hours of continuous use).
•One button operation; automatic power down when Bluetooth connection is
dropped.
•Rugged and weather resistant.
•Reliable connection to standard inclinometer probes (Figure 1) is accomplished
via model 6000-2 control cable. This cable features a lightweight, polyurethane
jacket, is less than 7 mm in diameter (see Figure 2) and contains a central
Kevlar®strand with a breaking strength of 150 kg.
Figure 2 - Model 6000-2 Control Cable (top)
Pulley Assembly
A pulley assembly is used to grip the control cable. This ensures that the cable
markers are not dislodged from the cable as they might be using cable holds. The
pulley assembly is shown in Figure 3 and the cable holds (now discontinued) in
Figure 4. The pulley style places no stress on the cable markers and removes any
tendency for markers to slip over the cable as when using cable holds.

3
Figure 3 - Pulley style cable grip
Figure 4 - Cable holds (obsolete)

4
1.2 GK-604D | aos
The “GK-604D | aos” inclinometer readout application installs on devices running a
minimum Android version of 4.0.3 (see Figure 5) and is designed to communicate
via Bluetooth with Remote Modules connected to analog or digital probes (Figure 1
and Figure 6), both MEMS and force-balance type. For digital probes the Remote
Module is fully contained within the reel as depicted in Figure 1.
For users with existing analog probes that are connected through an interface unit,
GK-604-4 (see Figure 7), or via the GK-604-3 reel system, the GK-604D | aos
application will continue to read this discontinued hardware.
Figure 5 – Android Field Device running GK-604D|aos

5
Figure 6 - 6000/6100 type probe
Figure 7 - GK-604-4 Interface
1.2.1 Compass Probes
In addition to standard inclinometer probes, the GK-604D|aos can also be used
with Geokon’s Digital Compass Probe. See Appendix G for more information on
this probe type.

6
1.3 Before using the GK-604D|aos
The readout software runs as an application under the Android operating system
(minimum of 4.03) installed on a smart phone or other Android device.
•The user should familiarize themselves with Android and the device running it.
•It is assumed in the instructions below that the user can launch applications on
the Android device (including file manager applications) and manage Bluetooth
settings.
•It is assumed that the user can use the on-screen keyboard to enter text and
numbers.
•Please refer to the Maintenance requirements in Section 6.

7
2. Installation and Operation
The steps described in section 2.1 are an attempt to guide the user through the process
of launching the GK-604D|aos, connecting to the probe and taking a survey. The steps
below attempt to cover all cases and refer the user to the appropriate section of this
manual when more information is needed.
NOTE: Always make sure that the inclinometer probe is attached to the reel before
attempting the start sequence below.
2.1 Initial Start Sequence
The following steps are a guide to the typical operation of the “GK-604D|aos” and, if
followed, should result in a successful “hole” survey being taken:
A) If the Remote Module has not been previously connected to the Android field
device or if a new Bluetooth pairing is needed, please see section 2.2
(Establishing Contact with the Remote Module).
B) Launch the GK-604D|aos by tapping on the “Apps” icon from the
main screen of the Android device, then tap the “GK-604D aos”
icon. If the GK-604D|aos application has not been installed,
please see section 2.3 (Installing the GK-604D|aos).
C) If the screen shown in Figure 17 is displayed instead of the Main Screen (see
Figure 25), please refer to section 2.4 (Starting the GK-604D|aos app for the
first time) before continuing to step D.
D) If the Inclinometer System is a digital system (probe model numbers 6100D-E
and 6100D-M), any new “probe” will be discovered upon connection to the
Remote Module (covered in later steps).
E) At this point the “Main” screen should be displayed (see Figure 25), a “Project”
and “Hole” should have been created and/or selected.
If connecting to a digital system for the first time, please select
“UNKNOWN” for the hole parameter, “Probe Name:”. If not the first-time
connecting, skip to step H.
If connecting to an analog system for the first time, a “Probe” should have
already been created in the Probe Library and the Probe’s name selected for the
current hole’s “Probe Name:” parameter. If not the first-time connecting skip to
step H.

8
F) If one is not selected already, select a hole by tapping on one of the holes listed
in the main screen, then tap “Select” from the resulting pop-up menu.
G) Insure that the correct Bluetooth pairing is selected by tapping on “APP” then
“System Configuration”. From the System Configuration screen, make sure that
the “Bluetooth Connection” parameter matches the current Remote Module to be
connected to. If the Remote Module does not appear as a selection in the
“Bluetooth Connection” “picker control, please refer to section 2.2 for more
information regarding Bluetooth pairing. Dismiss the System Configuration
screen.
H) Press the button labeled “POWER ON (BLUETOOTH)” on the Remote Module. A
blue light should come on and start to blink, signifying that the Remote Module
is waiting to connect to the android device.
I) From the “Main” screen (see Figure 25), tap the “APP” button. Start the
connection process by tapping on the “Live Readings” button. Tap on “OK” from
the resulting reminder prompt (see Figure 27). If the Remote Module fails to
connect with the Android device, then the screen shown in Figure 28 will be
displayed, indicating that either the Remote Module is no longer trying to
connect (timed out), that the Bluetooth pairing is associated with another device
or Bluetooth is disabled. Make sure that the proper device is selected in the
System Configuration settings, then try to connect again.
After a few seconds, the blue light on the Remote Module should change to a
steady state blue (lit but not flashing).
If connecting to an analog system, or to a digital system that’s been previously
connected to, the Live Readings Screen will be displayed (see Figure 30). Skip to
step J.
If connecting to a digital system for the first time (or the probe has changed):
a. If the window shown in Figure 8 is displayed, then the probe has not been
previously detected by the GK-604D | aos. In this case, tapping “Yes” will
cause the probe to be added to the Probe Library and the Probe Settings
screen shown in Figure 9 to be displayed. This allows an opportunity to give
the newly detected probe a user friendly name and description. See section
4.2, Probe Configuration for more information on probe settings. When
satisfied with the settings, tap “<” in the upper-left corner of the screen to
exit (and save) the Probe Settings screen (see Figure 9).
Because the Probe Name parameter was set to “UNKNOWN” in step E, the
window in Figure 10 will be displayed, allowing the name of the probe just
found to be saved into the current hole configuration.
b. The Live Readings Screen will be displayed (see Figure 34).