GTE GMG-200 Operating Manual

Sliding friction tester

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GMG-200
310-2310-001 EN20
Operating Manual
EN
Sliding Friction Tester GMG-200
GTE Industrieelektronik GmbH
Helmholtzstr. 21, 38-40 | D-41747 Viersen, GERMANY | info@gte.de |  +49(0)2162 / 3703-0 | www.gte.de

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Summary of Contents for GTE GMG-200

  • Page 1 GMG-200 310-2310-001 EN20 Operating Manual Sliding Friction Tester GMG-200 GTE Industrieelektronik GmbH Helmholtzstr. 21, 38-40 | D-41747 Viersen, GERMANY | info@gte.de |  +49(0)2162 / 3703-0 | www.gte.de...
  • Page 2 Support hotline: +49 (0)2162 /3703-0 E-mail: info@gte.de © 2021 GTE Industrieelektronik GmbH – This document and all illustrations contained herein are protect- ed by copyright and may not be copied and pasted, modified or distributed without the express consent of...
  • Page 3 BRIEF DESCRIPTION Brief Description The GMG-200 is a mobile device for measuring the coefficient of sliding friction of floor cov- erings conforming to DIN 51131, DIN EN 13893 and DIN CEN/TS 16165. The device has a traction cable that allows it to draw itself across the flooring to be tested by an integrated motor.
  • Page 4: Table Of Contents

    Logging ..........20 310-2310-001 EN20 GMG-200...
  • Page 5 14 Technical Data ..........26 GMG-200...
  • Page 6: About This Manual

    About this Manual Objective This manual describes the requirements for proper operation of the Sliding Friction Tester GMG-200. It is intended to be used only by properly qualified personnel (–› Chap. 2, For your Safety). Explanation of Symbols This manual follows a certain structure to make it easy to work with and understand. The following designations are used throughout.
  • Page 7: Abbreviations

    TIPS AND RECOMMENDATIONS This type of note provides information that is directly relevant for the further operation of the device. Abbreviations Abbr. Meaning GTE Industrieelektronik GmbH Sliding Friction Tester Force Friction coefficient Measurement Scan Newton...
  • Page 8: Storing This Manual

    −Do not touch the traction mechanism during pulling! −Steel strap must move easily! WARNING! The steel strap on the GMG-200 may have sharp edges, thus posing a risk of cuts. −Do not touch the steel strap! CAUTION! Operating errors can cause injury as well damage to the device.
  • Page 9: Intended Use

    FOR yOUR SAFETy Intended Use The GMG-200 is used to measure the sliding friction of floor coverings. It is operated by plac- ing the device on the floor with the sliders on the underside, pulling out the strap and attaching it to the foot plate.
  • Page 10: Scope Of Delivery

    SCOPE OF DELIVERy WARNING! Only original spare parts and accessories provided by the manufacturer may be used! Scope of Delivery Delivery of the GMG-200 includes the following components: 310-2310-001 EN20 GMG-200...
  • Page 11 SCOPE OF DELIVERy Description ① Transport case / trolley with foam insert ② Sliding Friction Tester GMG-200 ③ Foot plate ④ Standard sanding block ⑤ Power supply (battery charger) ⑥ Interface cable RS-232 to USB for data transmission ⑦ Removal tool...
  • Page 12: Design And Functioning

    Control panel with LCD and buttons ③ Connection for power supply (on the back / not shown) ④ Traction mechanism / strap extraction ⑤ Strap grip ⑥ Foot plate ⑦ A Slider base B Slider plate ⑧ C Slider material 310-2310-001 EN20 GMG-200...
  • Page 13: Control Panel

    - Retrieve measurement results “Bandauszug” button Enables strap extraction to pull the strap out to the required length “Speicher löschen” All saved measurement results are deleted button Initiates a new measurement consisting of five measuring runs “Neue Messung” button (scans) GMG-200 310-2310-001 EN20...
  • Page 14: Measurement Mechanism

    Foot plate The foot plate serves as the anchor point when pulling the GMG- 200 during measurement. It is fixed to the floor after the strap grip has been attached. 310-2310-001 EN20 GMG-200...
  • Page 15: Preparing For Operation

    Carefully lift the device out of the foam insert. Charging Battery The GMG-200 has a built-in battery that allows measurement without a power supply. If the remaining battery charge falls below a limit, “Battery empty” appears in the display. The remaining charge is enough to:...
  • Page 16: Attaching Slider Plate

    It takes 14 hours for the device to be completely charged! Disconnect the power supply. TIPS AND RECOMMENDATIONS When the GMG-200 is not is use, change it once a month for at least 10 - 12 hours. Disconnect the power supply when charging is completed! TIPS AND RECOMMENDATIONS The device has deep discharge protection.
  • Page 17: Changing Slider Plate

    PREPARING FOR OPERATION Changing Slider Plate Turn over the GMG-200 and rest it on the handles. Use an Allen screwdriver (3.0) to release the screws. Detach the slider plate from the floor plate. Place the desired slider plate on the floor plate.
  • Page 18 PREPARING FOR OPERATION Turn over the GMG-200 and rest it on the handles. Detach the slider plate. (–› Chap. 5.2, Attaching Slider Plate) Clamp the slider plate in a vise. Detach the glued sliders from the slider bases. Remove adhesive residue from the slider bases.
  • Page 19: Operation

    OPERATION Operation TIPS AND RECOMMENDATIONS Before beginning operation of the GMG-200: −Check the battery charge and recharge if necessary. −Verify that the surface of the attached sliders complies with the stan- dard specification. −Clean the sliders with the proper sanding block.
  • Page 20 When the device starts up, force (0 - 100 N, depending on the sliding friction) is applied to the foot plate via the strap. This is why it is essential to weight down and secure the foot plate with body weight! 310-2310-001 EN20 GMG-200...
  • Page 21: Preparing For Measuring Run

    Briefly release tension to the strap (approx 2 sec.). Tense strap slightly with the foot plate (approx. 3 sec.). The GMG-200 automatically starts a measuring run and moves towards the foot plate weighted down with a foot. The measuring track is defied by the strap exten- sion.
  • Page 22: Ending Measurement Process

    It evaluates the data, archives it and creates logs! TIPS AND RECOMMENDATIONS On slightly inclined surfaces, perform two measurements with 5 measurement runs each in opposite directions and calculate the mean value from both measured values! 310-2310-001 EN20 GMG-200...
  • Page 23: Canceling A Measuring Run

    Messung” button! Press the “Neue Messung” button to initiate a new measuring series. The number of the measuring run is adjusted automatically in the display. The number of measuring series increases automatically. Prepare for the new measuring run. GMG-200 310-2310-001 EN20...
  • Page 24: Measured Value Memory

    Press the “Stop” button for each additional measuring run to be displayed. The measured value memory appears in the display, beginning with the highest number and going back. Exiting display mode and returning to starting screen ► Hold down the “Stop” button for two seconds. 310-2310-001 EN20 GMG-200...
  • Page 25: Resetting Measured Value Memory

    The software helps to archive the measured values such that all of the data can be easily retrieved as needed at a later time. ► Use the connecting cable to connect the GMG-200 to the serial interface on the com- puter. GMG-200 310-2310-001 EN20...
  • Page 26: Checking Zero Point Of Force Measurement

    The precision of the measurement of the friction coefficient is a factor of the precision of force measurement at the traction cable. When there is no force applied to the traction cable, the GMG-200’s force measuring device should indicate “ON.”...
  • Page 27: Errors

    Press “Start” to switch on the device self-discharge protection mode: The device has an automatic shutdown feature to prevent deep discharge. If within ten minutes no functions occur and no data transmitted, the device switches itself off GMG-200 310-2310-001 EN20...
  • Page 28: Maintenance

    When all measurements are finished, extract the traction cable all the way, wipe it dry with a soft cloth and then retract it again. Caution! The steel strap on the GMG-200 may have sharp edges, thus posing a risk of cuts. −Wear gloves when drying!
  • Page 29: Storage

    12.2 Storage ► Store the GMG-200 in the proper transport case! The foam insert in the GMG-200 transport case is designed to accommodate all components included in the scope of delivery. Stowing the GMG-200 in the transport case: Release the strap from the foot plate and press the “Stop” button.
  • Page 30: Trolley

    12.5 Calibration TIPS AND RECOMMENDATIONS Send the GMG-200 to the plant at least once a year to be calibrated! 13 Disposal Return the device to the manufacturer when it reaches the end of its serviceable life. The manufacturer will ensure that the components are disposed of properly, in an environmen- tally friendly manner.
  • Page 31: Technical Data

    <± 1% plus errors caused by device vertical or horizontal off-track traction and floor coverings that are not horizontal Admissible vertical off-track traction: ± 1 cm per 1 m Admissible horizontal off-track traction: ±1cm per 1 m Memory for measuring curves: GMG-200 310-2310-001 EN20...

Table of Contents