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INSTRUCTION MANUAL

Friction Measuring

System CPF / CTC

Graf Chemicals GmbH

Phone: +49 (0) 8041 79285-16

Prof.-Max-Lange-Platz 4

[email protected]

83646 Bad Tölz – Germany

www.graf-chemicals.com

Summary of Contents for CPF

Page 1: ...NSTRUCTION MANUAL Friction Measuring System CPF CTC Graf Chemicals GmbH Phone 49 0 8041 79285 16 Prof Max Lange Platz 4 frank engelbrecht graf chemicals com 83646 Bad Tölz Germany www graf chemicals com ...

Page 2: ...4 Other components of the measuring system 8 5 Explanation of the tension measuring head 6 Two pictures of the structure of the motor 9 10 7 Installation Guide for Graf Friction Lab 2 9 8 Start Graf Friction Lab 2 9 11 15 9 Calibration of the program 10 Operating of the program 16 20 11 Typical diagrams 12 Technical data of the CPF 21 23 13 Declaration of conformity 24 ...

Page 3: ...achine but to have reproducible conditions of course under same climatic conditions Because of this we use a standard sewing thread tension device see picture 1 for our CPF friction device Our CPF CTC friction device is equipped with a yarn roller tension break see picture 2 As a sewing machine makes no constant pull speed we can measure at different speeds We can measure for example friction at 5...

Page 4: ...sion 2 0 06 2020 4 To get same results with one yarn at different locations besides same climate the same settings of the tension device system are necessary For this we produce calibration yarn This specially cleaned and rinsed calibration yarn which is from one dye lot and lubricated with our lubricant Silwa 145 KS at our SL2 lubrication system gives a very constant friction also at different hu...

Page 5: ... the fournisseur the thread goes through the tension device The friction which arises on the thread going through the tension device results in the necessary tensile force which pulls the thread with prescribed speed through the yarn brake 4 This tensile force of the thread is measured in the tension measuring head The tension measuring head consist of the DMS1 strength sensor converts the tensile...

Page 6: ...imes B Reel for winding up the measured thread The reel is torque controlled thus it can wind up fine thread as well as coarse thread without any influence on the measurement C Rotary potentiometer for adjusting the pull off speed barrel speed To guarantee an exact and long time constant adjustment it was used a spiral potentiometer D LED digital display for the pull off speed The actual pull off ...

Page 7: ...h constant speed 3 Wind Reel switch It switches on and off the reel 4 Torque Reel torque The power of the reel can be set from 0 to 100 5 Drive Drive switch On drive works continuous Off drive is switched off 6 Feed Fixed feed speed setting On feed speed setting with 25 m min Off feed speed setting off 7 Store Switch for the extern fournisseur 8 Speed Range Change the speed from m min to cm min st...

Page 8: ...This thread can nearly tensionfree unreeled If the stock is exhausted the fournisseur turns on itself for coiling and providing new thread C The yarn brake The yarn brake where the thread goes through produces the real frictional force for measuring D The tension measuring head The tension measuring head measures the tension of the thread which is produced by the yarn brake The A D converter chang...

Page 9: ...g roll which is connected to the aluminium plate and finally it is guided around the second firm roll The tension signals which are produced from the tension measuring head are sent to the A D converter interface The interface changes the signals in discreet digital values and send them to the computer The interface makes equalise and zero adjustment of the tension measuring head possible to guara...

Page 10: ...alue Start Actual value End stage Interruption of circuit Reference Comparator Control unit Start ramp Mains Trafo Control Power unit Motor with speedometer Status indicator Start Required value Instruction Manual FRICTION MEASURING SYSTEM CPT CTC Version 2 0 06 2020 10 ...

Page 11: ...tion measuring system and to the computer Graf Friction Lab 2 9 Friction Measurement System Software is available for download at www graf chemicals com en products technological products Also you will get a license key LicenseFile asc which allows you to install and use the software 7 1 LicenseFile asc and the Setup_GrafLab 2 9 should be in the same file 7 2 Click Setup_GrafLab 2 9 to start the s...

Page 12: ...7 4 Click Next 7 5 Choose I accept the agreement and click Next Instruction Manual FRICTION MEASURING SYSTEM CPT CTC Version 2 0 06 2020 12 ...

Page 13: ...7 6 Select destination location and click Next 7 7 Select start menu folder and click Next Instruction Manual FRICTION MEASURING SYSTEM CPT CTC Version 2 0 06 2020 13 ...

Page 14: ...al tasks and click Next 7 9 Setup is now ready to begin installing of the GrafLab on your computer 7 10 The program is now installed Click Finish Instruction Manual FRICTION MEASURING SYSTEM CPT CTC Version 2 0 06 2020 14 ...

Page 15: ...e proceed at first with the chapter 9 Calibration of the Program Then start with 8 2 8 2 Start a measuring with F1 or load an old one with F4 8 3 Start Graf Friction Lab 2 9 for the first time A window appears to enter your Company name and location Instruction Manual FRICTION MEASURING SYSTEM CPT CTC Version 2 0 06 2020 15 ...

Page 16: ...9 2 Prepare supplied calibration weight approx 1000 g 9 3 Check if the weight mentioned on the label is correct while weighing it on some scale 9 4 Write the measured weight in the small field Weight 500 2000g and click Calibrate Instruction Manual FRICTION MEASURING SYSTEM CPT CTC Version 2 0 06 2020 16 ...

Page 17: ...e picture below and click Continue 9 6 The calibration needs some seconds If required please repeat the procedure The picture on the left shows the measuring head in a completely unloaded state Instruction Manual FRICTION MEASURING SYSTEM CPT CTC Version 2 0 06 2020 17 ...

Page 18: ...and click Continue The picture on the left shows the measuring head loaded with the weight referred to above It must be fixed on the wheel at the top of the measuring head Instruction Manual FRICTION MEASURING SYSTEM CPT CTC Version 2 0 06 2020 18 ...

Page 19: ... must have a constant value of X 2 04cN Example With a weight mass of 1145 gram the measurement curve in the screen must have a constant value of 562cN 5cN Then please run a measuring test with the measuring head completely unloaded as you can see in the picture of step No 9 5 In this case the measuring curve on the screen must stay at 0cN zero line If you have any doubt that the calibration proce...

Page 20: ... that the recording process stops automatically Measurement per sheet means the number of measurements per page 10 2 Click Ok after the setting 10 3 Click in the top menu Preferences then Options and choose Options 2 to make other settings 10 4 Click Ok to confirm your settings Instruction Manual FRICTION MEASURING SYSTEM CPT CTC Version 2 0 06 2020 20 ...

Page 21: ...tension peak in cN The more close to FAV the better F min Minimum tension peak in cN The more close to FAV the better Wav Dimensionless number for the roughness of the friction diagram The lower the better Bad friction Good friction Instruction Manual FRICTION MEASURING SYSTEM CPT CTC Version 2 0 06 2020 21 ...

Page 22: ...Bad stick slip Good stick slip Instruction Manual FRICTION MEASURING SYSTEM CPT CTC Version 2 0 06 2020 22 ...

Page 23: ...ing head 40 x 45 x 150 mm Weight of tension measuring head 650 g Dimension A D converter 130 x 185 x 70 mm Weight A D converter 1 1 kg Strength measuring range 0 2 000 cN Point of destruction 6 250 cN Measuring solution GRAF ADC 12 Bit Measuring solution UM4 8 Bit Sampling frequency 2 Hz 100 Hz Measurement error about full scale Max 1 Linearity deviation 0 5 max Hysteresis 0 35 max Temperature coe...

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