Fungilab Hoppler V9000 Operation Manual Download Page 1 | Manualshive

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Visco Ball (Hoppler)

V9000

Operation Manual

PLEASE READ THIS MANUAL CAREFULLY BEFORE OPERATION

www.laboquimia.es

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Summary of Contents for Hoppler V9000

Page 1: ...Visco Ball Hoppler V9000 Operation Manual PLEASE READ THIS MANUAL CAREFULLY BEFORE OPERATION www laboquimia es ...

Page 2: ... 5 1 Introduction 8 5 2 Setting up the equipment Assembly 8 5 3 Principle of the measurement 9 6 Setting up and operation 10 6 1 Temperature control 10 6 2 Loading the sample 10 6 3 Selection of the balls 11 7 Measurement of the falling times 12 8 Evaluation of the test results 14 9 Viscosity determination of gases 16 10 Cleaning the measuring tube 16 www laboquimia es ...

Page 3: ... as one of continuous development and progress We reserve the right to vary the product in minor details to those describe in this publication We include all additional information that is necessaryto our products and materials www laboquimia es ...

Page 4: ...enance in any device of the equipment transgress the directive of use 891655 CEE and the manufacturer can assume no responsibility for any damages that could be involved While this instrument is in use it may need service In this case you only have to phone the office whose address is at the bottom of the page or to your usual supplier It is advisable to have a regular maintenance for your equipme...

Page 5: ...aired or you have ascertained the effect of the damage Ensure that this manual is always at hand for every unit operator Only use this unit solely for the intended application Specialist personnel must only carry out repairs alterations or modifications Improper repairs can cause considerable damage The FUNGILAB service department is at your disposal for repair work i Do not operate the unit with ...

Page 6: ... testing Set of balls 1 6 see chapter 10 3 Hollow stopper Stopper Ball tweezers Cleaning brush Cover plate Stopper gasket 0 15 6 mm Thermometer gasket 0 10 mm Socket wrench Instruction manual No other material except for cleaning material V99999 cleaning brush is necessary at normal use 5 Falling ball viscometer www laboquimia es ...

Page 7: ...et may be pivoted in order to turn the tube upside down again to let the ball return to the initial position before a measurement The measuring tube is closed on both sides by two stoppers one of which contains a capillary and a small reservoir This stopper prevents undesirable changes of pressure in the liquid sample and has a passage for air bubbles when the temperature is being changed The visc...

Page 8: ...ball through the sample filled into a slightly inclined cylindrical measuring tube is described by means of the fall time The test results are given as the dynamic viscosity using the internationally standardized absolute unit of mili Pascal seconds mPa s Note 1 mPa s 1 cP centiPoise The VISCO BALL Viscometer correspondsto the requirements of many international standards i e ISO 12058 and the Germ...

Page 9: ...mits the tolerances may be increased to 0 05 C The tempering room see functional elements must be free of air bubbles 6 2 Loading the sample All parts of the viscometer being in direct contact with the sample must be kept clean and dry A sample volume of approximately 45 cm3 is poured into the measuring tube up to 20 mm below the rim of the tube Then the ball is placed into the tube and the hollow...

Page 10: ... 15 81 15 6 15 6 15 2 14 0 11 0 Constant K mPa S cm3 g s approx 0 007 0 09 0 09 0 7 4 5 33 Measuring range mPa s 0 6 10 7 130 30 700 200 4800 800 10000 6000 75000 Additionally the following ball is deliverable Article V91107 Ball n G Material Borosilicate glass Density P g cm3 2 2 Ball diameter mm 15 91 Constant K mPa S1 cm3 g s approx Measuring range mPa s gases The measuring ranges for viscosity...

Page 11: ...periphery of the bail touches the ring mark B which again must appear as a straight line If one uses the distance AC or CBto reduce very long falling times for high viscous liquids the double of the measuring time period must be taken into account Turning the jacket tube 180 again the bail returns to its start position it is good practice to take the mean value out of several falling time values 3...

Page 12: ...ity mPa s p density of the liquid sample g cm3 To evaluate the reliability of the results the following criteria may be used Reproducibility one person one instrument If one person determines two test results under identical test conditions these results are supposed to be acceptable if they do not vary more than the figures stated in the table below from the average value Comparability several pe...

Page 13: ...cally by means of absolute rotational viscometers i e the FUNGILAB VISCO BASIC VISCO STAR VISCO STAR plus VISCO ELITE Alpha Smart Expert or Premium Example sugar solution of 40 Density of ball 2 2 2 g cm3 Density of the solution 1 18 g cm3 Ball constant K 0 09 mPa S cm3 g s Falling time 61 s Measuring temperature 20 0 C The absolute viscosity is ruo c 0 09 2 2 1 18 61 5 6 mPa s In most cases the d...

Page 14: ... FG FA 1815 10 5 mPa S where rigas viscosity of the gas at the temperature T FG falling time of the ball in the gas at the temperature T FA falling time of ti ball in air at a temperature of 20 C Viscosity of the air at a temperature of 20 C 1815 10 5 mPa s 10 Cleaning the measuring tube Usually the tube is cleaned by rinsing it with a suitable solvent High viscous liquids glue and heavy oils etc ...

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