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GMG-200

310-2310-001 EN20

ABOUT THIS MANUAL

Warnings

The following types of notes are used throughout this manual.

DANGER!

This combination of symbol and signal word indicates an immediately dangerous

situation which could lead to death or severe injuries if it is not avoided.

WARNING!

This combination of symbol and signal word indicates a possibly dangerous

situation which could lead to death or severe injuries if it is not avoided.

CAUTION!

This combination of symbol and signal word indicates a possibly dangerous

situation which could lead to minor injuries if it is not avoided.

NOTICE!

This combination of symbol and signal word indicates a possibly dangerous

situation which could lead to property damage if it is not avoided.

TIPS AND RECOMMENDATIONS

This type of note provides information that is directly relevant for the further

operation of the device.

1.3 Abbreviations

Abbr.

Meaning

GTE

GTE Industrieelektronik GmbH

GMG

Sliding Friction Tester

F

Force

CF

Friction coefficient

M

Measurement

SC

Scan

N

Newton

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Summary of Contents for GMG-200

Page 1: ...al GTE Industrieelektronik GmbH Helmholtzstr 21 38 40 D 41747 Viersen GERMANY info gte de 49 0 2162 3703 0 www gte de Sliding Friction Tester GMG 200 310 2310 001 EN20 EN GTE D Viersen GMG 200 Instrument for Slide Measuring ...

Page 2: ...mholtzstr 21 38 40 41747 Viersen 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 the manufacturer Technical data is subject to change without notice ...

Page 3: ... are attached to a changeable slider assembly on the bottom of the device The slider assembly can be changed as needed for the respective type of flooring A sensor incorporated into the slider assembly enables the GMG 200 to automatically detect the material of the attached sliders and to include it in the evaluation All of the measured values and the signal patterns are automatically placed in th...

Page 4: ...urement Mechanism 9 5 Preparing for Operation 10 5 1 Charging Battery 10 5 2 Attaching Slider Plate 11 5 3 Changing Slider Plate 12 5 4 Cleaning Sliders 12 5 5 Changing Sliders 12 6 Operation 14 6 1 Preparing Measuring Surface 14 6 2 Preparing for Strap Extraction 14 6 3 Preparing for Measuring Run 16 6 4 Starting Measurement Process 16 6 5 Ending Measurement Process 17 6 6 Querying Measurement Re...

Page 5: ...1 EN20 TABLE OF CONTENTS 10 Checking Zero Point of Force Measurement 21 11 Errors 22 12 Maintenance 23 12 1 Cleaning 23 12 2 Storage 24 12 3 Transport 24 12 4 Trolley 25 12 5 Calibration 25 13 Disposal 25 14 Technical Data 26 ...

Page 6: ...erational objectives Operational objectives specify the result to be achieved by following the subsequent instruc tions Operational objectives are shown in bold print Instructions Instructions are the steps to be taken in order to achieve the previously stated operational objective Instructions appear like this Indicates a single instruction 1 First of a series of instructions 2 Second of a series...

Page 7: ...juries if it is not avoided CAUTION This combination of symbol and signal word indicates a possibly dangerous situation which could lead to minor injuries if it is not avoided NOTICE This combination of symbol and signal word indicates a possibly dangerous situation which could lead to property damage if it is not avoided TIPS AND RECOMMENDATIONS This type of note provides information that is dire...

Page 8: ...minate and textile floor coverings Measurement of dynam ic sliding friction coefficient on dry floor surfaces DIN CEN TS 16165 Determination of slip resistance of pedestrian surfaces Methods of evaluation 2 For your Safety WARNING The traction mechanism of the GMG 200 is pulled with increased force during measurement and can cause squashing Do not touch the traction mechanism during pulling Steel ...

Page 9: ...ice 2 2 Qualification Required of Personnel WARNING Only properly trained persons may operate the GMG 200 2 3 Modifications WARNING All kinds of unauthorized modifications or additions to the equipment are expressly prohibited Do not open the device When in doubt consult the manufacturer 2 4 Accessories and Spare Parts The following accessories are available for the GMG 200 Art no Description 310 ...

Page 10: ...very 5 GMG 200 310 2310 001 EN20 WARNING Only original spare parts and accessories provided by the manufacturer may be used 3 Scope of Delivery Delivery of the GMG 200 includes the following components 2 1 3 4 5 6 7 ...

Page 11: ... Tester GMG 200 Foot plate Standard sanding block Power supply battery charger Interface cable RS 232 to USB for data transmission Removal tool No illustration Allen key for exchanging slider plates Sandpaper abrasive silicon carbide 120 grit and 320 grit Sandpaper plate 115 x 250 x 17 mm in compliance with DIN 51131 ...

Page 12: ...1 Overview No Description Handles Interface RS 232 Control panel with LCD and buttons Connection for power supply on the back not shown Traction mechanism strap extraction Strap grip Foot plate A Slider base B Slider plate C Slider material 2 1 3 4 5 6 7 8 A B C Detailed view of ...

Page 13: ...ss LED indicator Störung Lights up red when an error occurs Ein button Switches on device Aus button Switches off device Start button Initiates strap retraction and measurement process Stop button Change language Stop strap extraction at desired length Stop measurement process Retrieve measurement results Bandauszug button Enables strap extraction to pull the strap out to the required length Speic...

Page 14: ...ate after the strap is extended vv Slider plate The slider plate on the underside of the device consists of a met al plate with coding contact and three metal skids to which the changeable slider material is affixed When special materials are to be used as the slider material slider plate systems can be provided to which the respective material can be attached vv Foot plate The foot plate serves a...

Page 15: ...e handle with the other hand 3 Carefully lift the device out of the foam insert vv 5 1 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 completely retract the strap transmit the data to the computer TIPS AND RECOMMENDATIONS The...

Page 16: ...urs for the device to be completely charged 4 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 After ten minutes of idling or no data transmission the device switches itself off 5 2 Attaching Slid...

Page 17: ...ee slider bases are on the slider plate on the underside of the device Each slider base is equipped with one slider 1 Turn over the GMG 200 and rest it on the handles 2 Move the sliding block steadily back and forth over the sliders sandpaper type 320 5 5 Changing Sliders A sensor in the slider plate determines the material of the respective slider When the slide plate is changed the device automa...

Page 18: ...der bases 5 Remove adhesive residue from the slider bases 6 Apply a thin coating of adhesive to the entire surface of the slider bases Use superglue for rubber sliders and Pattex Alleskle ber for leather sliders 7 Place the sliders on the runners align them and press them into place TIPS AND RECOMMENDATIONS Allow the adhesive to dry before use TIPS AND RECOMMENDATIONS Use the proper sanding block ...

Page 19: ...e lubricant use pressure free water pursuant to DIN 51131 or use the lubri cant to which the flooring is normally subjected and that may cause an accident during everyday use 6 2 Preparing for Strap Extraction Strap extraction 1 Grasp the strap grip and draw the traction cable out of the device How quickly the device releases the strap is a factor of the tensile force applied 2 As the strap is bei...

Page 20: ...tandard e g steps Values from shorter measuring tracks that do not comply with lengths specified by the standard are indicated with an asterisk Securing strap 1 Attach the strap grip to the foot plate and position it properly 2 Position the foot plate to avoid off track traction 3 Place a foot on the foot plate to secure it vv TIPS AND RECOMMENDATIONS When the device starts up force 0 100 N depend...

Page 21: ...aw the traction cable out of the device and secure it with the foot plate 4 Weigh down the foot plate with your foot 6 4 Starting Measurement Process TIPS AND RECOMMENDATIONS The strap has to be tensed slightly before beginning the measurement process To initiate a measuring run with the aid of the foot plate 1 Briefly release tension to the strap approx 2 sec 2 Tense strap slightly with the foot ...

Page 22: ...et point speed has been achieved over a measur ing distance of 50 cm Z The current sliding friction coefficients of the most recent successful measuring runs are displayed Z After five measuring runs have occurred the measured values of the last three measuring runs are averaged and the value displayed in the last line If one of the last three measuring runs was invalid no average is calculated an...

Page 23: ... 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 7 Measuring Series A total of 18 standard measurements consisting of five measuring runs scans each can be performed TIPS AND RECOMMENDATIONS The standard measurement is complete when five measuring runs have occurred I...

Page 24: ...on is pressed Out of memory read or erase 8 1 Reading Out Measured Value Memory Viewing values in the memory Device idling Press the Stop button once Device operating Press the Stop button twice Z The view mode Memory appears in the display Displaying completed measuring runs Press the Stop button for each additional measuring run to be displayed Z The measured value memory appears in the display ...

Page 25: ...p via the RS 232 interface integrated into the GMG 200 simply by clicking the mouse The program enables the precise curve progression of each individual measuring run to be called up and visualized The software assists in creating a measurement log that com plies with the relevant standard and can be read out as a PDF file In addition to the measured values company data and a logo can be saved The...

Page 26: ...force measuring device should indicate ON Checking 1 Extract the strap approx 5 to 10 cm and then press the Stop button 2 Hold down the Stop button for about two seconds Z The force N is indicated in Newton in the first line The value should be 0 F ON RK 0 00 Slider leather M 1 S 3 Z When the strap is extracted and there is no tensile force applied to the strap the display should indicate ON Z Whe...

Page 27: ...error Start pull in Internal traction ca ble winding error Extract the strap and then take care that the strap is drawn in straight and evenly when attempting again EEPROM error Start pull in Inconsistency in RAM and or EEPROM data Start strap retraction Counter reading error Measurement results are not displayed Measurement invalid repeat measur ing run Blank display device is in self discharge p...

Page 28: ...erload occurs during use of the device e g due to blockage during the mea suring run the measurement mechanism is subjected to extremely high forces It is advisable to have the device inspected at the plant 12 1 Cleaning The device is designed such that moisture that penetrates the device via the traction cable does not impair operation It is advisable to keep the traction cable tensed during meas...

Page 29: ...e 4 Place the device on the removal tool such that the underside of the device rests on the removal tool Front of device faces forward 5 Use one hand to hold the device to the removal tool With the other hand grasp the han dle and with the underside of the device facing the case lid carefully lower the device into the foam insert TIPS AND RECOMMENDATIONS When it is not in use charge the GMG 200 on...

Page 30: ...v Extending and retracting handle 1 Hold onto the handle and press the button on the top 2 Hold down the button and pull up the handle track by track or press it down 3 Release the button and lock the handle into place at the de sired height vv 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 manufact...

Page 31: ...t for power sup ply battery charger Ambient conditions Temperature range C 10 to 40 Relative humidity r h 20 90 non condensing Degree of protection IP20 Measurement process Traction speed m s 0 2 0 25 0 02 Pressure on sliders N cm2 9 9 5 Range of friction coefficient 0 01 1 Resolution 0 01 Measurement uncertainty of measuring device of limit 1 plus errors caused by vertical or horizontal off track...

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