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Geokon GK-404 Instruction Manual

Vibrating wire readout
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Download this manual See also: Instruction Manual
Instruction Manual
Model GK-404
Vibrating Wire Readout
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 © 2003-2016 by Geokon, Inc.
(Doc Rev K, 3/15/16)

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Summary of Contents for Geokon GK-404

  • Page 1 Vibrating Wire Readout 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.
  • Page 3 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.

  • Page 5: Table Of Contents

    TABLE of CONTENTS Page   1. INTRODUCTION ..............................1   2. INITIAL SETUP ..............................1 2.1 A ............................... 1   CCESSORIES 2.2 A ............................ 2   TTACHING TO A ENSOR   3. OPERATION ................................2 3.1 POS (POSITION) SWITCH ..........................3  ...
  • Page 6 FIGURES Page   FIGURE 1 .................................. 1   FIGURE 2, FIGURE 3, FIGURE 4  ............................ 2 FIGURE 5 .................................. 2  TABLES Page   TABLE 1 – POSITION SPECIFICATIONS  ........................... 3   TABLE 2 ‐ TRANSDUCER PLUG PIN OUT ........................ 7   TABLE 3 ‐ RESISTANCE VERSUS TEMPERATURE ...................... 8...

  • Page 7: Introduction

    To install the neck strap onto the GK-404, locate the plastic connector on the neck strap (Figure 2) and place the larger circular hole onto the plastic nub on the back of the GK-404, with the bottom of the connector positioned to the right (Figure 3). Next slide the connector all the way to the right, then twist it clockwise until the bottom of the connector is pointing down (Figure 4).

  • Page 8: Attaching To A Sensor

    (bare). 3. OPERATION To turn the GK-404 on, press the “ON/OFF” button on the front panel of the unit. The initial startup screen will display: Geokon Inc.

  • Page 9: Pos (Position) Switch

    Auto-Off timer. (See section 3.3.4) To turn the GK-404 off manually, press and hold the ON/OFF button until Saving Settings is displayed then release. All user settings are stored on shut off and will be restored the next time the GK-404 is turned on. 3.1 POS (POSITION) SWITCH Pressing the POS button will select the proper pluck settings for the vibrating wire gage that you want to read.

  • Page 10: Cfg Switch

    Press the MODE button to select automatic shut-off after 5 minutes, 15 minutes or 30 minutes. You may also disable the Auto-Off timer so that the GK-404 will only shut off if the front panel ON/OFF button is pressed. The Auto-Off will only activate if no front panel buttons are pressed for the specified amount of time.

  • Page 11: Low Battery Indication And Auto-Off

    5. Maintenance 5.1 Battery Replacement Alkaline batteries are the best choice for use in the GK-404. A set of (2) 1.5V AA batteries are installed in the GK-404 at the factory. To replace the batteries, use a #1 Phillips screwdriver to remove the battery compartment cover located at the back of the readout.

  • Page 12: Vibrating Wire Gage Reading Unstable

    Thermistor checks out okay consult factory to schedule repair of Readout. Note: Dashes will display if no Thermistor is connected. 6.5 Display shows weird characters Turn the GK-404 ON while pushing the CFG and POS buttons at the same time to restore the unit to its factory default settings 7. Limits of Liability The GK-404 Vibrating Wire Readout has been developed specifically for use with Geokon, Inc.

  • Page 13: Appendix A - Specifications

    APPENDIX A - SPECIFICATIONS A.1 Vibrating Wire Readout: Excitation Range: 400 Hz to 6000 Hz, 5-volt square wave Measurement Resolution: 0.1Hz 0.1uS 0.1Digit Measurement Accuracy: +/-0.025 % of Full Scale (6000 Hz) A.2 Temperature Readout: Sensor Type: Thermistor, YSI 44005, Dale #1C3001-B3, Alpha #13A3001-B3 Sensor Accuracy: 0.5...

  • Page 14: Appendix C - Thermistor Temperature Derivation

    APPENDIX C - THERMISTOR TEMPERATURE DERIVATION Thermistor Type: YSI 44005, Dale #1C3001-B3, Alpha #13A3001-B3 Resistance to Temperature Equation:   273 2   A B LnR C LnR T  Temperature in C. where: LnR  Natural Log of Thermistor Resistance A ...

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