User Manual Rheomat R 123
Contents
1. 0 Fax 49 7051 92489 29 office proRheo de www proRheo de Version 05 11 1 1 Introduction The Rheomat R 123 serves to determine dynamic viscosity of liquids The Rheomat R 123 is a very easy to handle instrument This rotation type viscometer was reduced to the most important functions and can therefore fastly be employed at any place 2 Measurement Principle The Rheomat R 123 is a rotation type viscometer This means the measuring bob ro tates in the product to be measured The power that is needed to have the measuring bob rotating with a predetermined speed in the sample is measured Viscosity is calcu lated from this torque the rotational speed of the measuring bob and the measure ment system geometrics Viscosity measurement with the Rheomat R 123 bases on the SEARLE Principle ro tation type rheometer with fixed measuring cup and rotating measuring bob Fig 1 The Rheomat R 123 measuring bob rotates with a constant speed n 62 5 min ina sample The necessary torque to have the measuring bob rotating with this constant rotational speed is a direct value for the viscosity of the sample Rheomat R 123 2 3 Start up procedure 3 1 Location The Rheomat R 123 must be used vertically Therefore the according stand is suit able For laboratory use the Rheomat R 123 and its stand optional accessory should be positioned on a level bench The proRheo R 123 may be operated at ambient tem perature between 12. lt P proRheo User Manual Rheomat R 123 Index 1 POU OCU CC EE 2 2 IMGCASUTEMENTL 4 uer e E 2 3 Start up procedure EE 3 3 1 Ren EE 3 3 2 ms CACO EE 3 3 2 1 PLON V N e ponae poe ovanweeauisatpe peep arensonectunesncsou eugene aupsantecieecuasieue diape sucess 3 3 2 2 ee EE 4 4 phe EL DE 5 INS e E E O 6 5 1 Language oroia EEEE EEE EEEE VE E E AANE E EES 6 5 2 Measurement SYSTEMS sssrin aAa EEEE ERENS 6 NO AS CIN NUS screamer sis err ache ce entrees a a aA raaa 8 6 1 EEGEN 8 6 1 1 TINGS TO SUI EE 8 6 1 2 Zero adlustment cece eccceecceecaeeceecaeeceeecseecaeecuecauecauecaueceecaeesseeeueeseesaeesaees 8 6 2 IVE ET VC EEN 8 6 2 1 Termination Of measurements ccccececcceeeeeeeceeeeeeeeseeeeeceeeeeeeseeeeeeeseeeneeeeees 9 FOE ee Le EEN 10 7 1 Ziele Hutt 10 7 2 U e ed EE 10 7 2 1 OTS AMA ese exe ect ree ere Sees tea tee or E ce oes reise erases ENE E oie etl REER 10 7 2 2 Calibrating And testing ccccccccceccceseecececeeeceeeeseeeseaeeseeeseueeseeeseneeseeeseeeeaeess 11 7 3 Errors and malfunctions ccccccceeeeeeeceeeeeneeeneeeneeneeensenaseneeaneeaneeanesenssensensonenens 11 7 3 1 Accessories and Order Number 12 7 4 Technical dala EE 13 1 4 1 Measurement head R 12 13 7 4 2 Measuring Ranges Measurement systems cece eeeeeeeeeeeteeeeeeaeeeseeeaees 13 7 5 Support and Seepvlee Sbapgdattgg eessen SEENEN EEN NEEN Eege eege E Ne 14 proRheo GmbH Bahnhofstr 38 D 75382 Althengstett Tel 49 7051 92489
3. wrong or Switch off the R 123 and si not stored correctly multaneously press the point READY key Reselect or re enter lan guage and code Internal buffer battery is discharged Call ProRheo service Rheomat R 123 switches itself Power supply unit dis Attach to the power supply off connected from power supply Torque too high with On restart select a smaller single point measure measurement system ment Rheomat R 123 11 7 3 1 Accessories and Order numbers Standard delivery includes measuring head power supply and adapter Illustration Rheomat R 123 Adapter for VT02 Measuring systems 200 0110 401 0113 Measurement bob 1 200 0191 Measurement bob 2 Measurement bob 3 Centring part for measuring cup o P ee l Case with set of measuring systems in cluding e 3 pieces measuring bob 1 3 pieces measuring bob 2 3 pieces measuring bob 3 1 centring part 1 measuring cup case Rheomat R 123 200 0192 200 0193 200 0210 200 0300 400 0200 400 0215 400 0215 12 ZA Technical data 7 4 1 Measurement head R 123 Measurement principle Rotational speed Range e Accuracy Torque range Admissible ambient temperature Data memory Dimensions measuring instrument Width x depth x height e Weight Power supply unit e Voltage Current Frequency e Type of protection e Approvals 7 4 2 Measurement systems Rotational viscometer 62 5 min 0
4. 0 and 40 C only 3 2 Installation 3 2 1 Front view Digital Anzeige Fi Folientastatur EIN AUS Stativarm mit Arretierschraube Arretierschraube Stativstange Fig 2 If stand is used Place stand rod in stand base and fix with the screw Slide stand arm unit over stand rod and fix with the screw Install the Rheomat R 123 and fix with the screw Rheomat R 123 3 3 2 2 Side view Trage und Haltegniff Stativaufnahme Messrohrautnahme __ Antnebsachse Fig 3 Connect the measuring bob needed for the first measurement to the drive axis If old measuring bobs are used fix adapter Note The higher the viscosity of the test sample the smaller the measuring bob used Switch on the instrument The display must show proRheo R 123 Rheomat R 123 4 4 The keypad ml rm Entry of numeric values Confirmation of an entry Zero adjustment 0 Zero Simultaneously press this key when switching on the display shows 0 Select language see chapter 5 1 Simultaneously press this key when switching on the display shows LANGUAGE Start measurement when PRORHEO R123 is shown on the display According to the operation modus of the Rheomat R 123 the keys have different ef fects Please see the following overview Entry Function During operation Together with ON I 0 Zero Number NN Automatic zero adjustment Select language e Point Start measu
5. 5 from stored rated value 0 25 to 10 0 mN m 10 to 40 C Lithium battery lifetime min 3 years 105 x 135 x 350 mm 2 2 kg 100 120 V 10 approx 320 mA and 220 240 V 10 approx 160 mA 50 60 Hz Europe EN 60950 Electrical safety EN 55022 Interference suppression Canada CSA 22 2 No 151 M1986 Min Viscosity Max Viscosity Rheomat R 123 300 000 13 7 5 Order form for Support Service Please fill in the required data and return this form by fax to the following no 49 7051 92489 29 Company Contact Department Telephone Fax email Address Address Please contact us because of the Rheomat R 123 serial Number Please give us information about Maintenance Contract service Calibration Technical Inquiry Rheomat R 123
6. easurement Viscosity of a sample is determined at a constant shear rate Rheomat R 123 8 gt Fill the measuring cup gt Connect desired measuring bob no 1 2 or 3 gt Put on the centring part Assure that the measuring bob is up to the mark in the sample see chapter 5 2 Measuring systems gt Switch on the Rheomat R 123 and wait until the display shows proRheo R 123 gt Press the Point key gt Enter measuring system number and or confirm with E Note The measuring system number will be kept stored For the following measurement you can either confirm the stored number wit E or enter a new measuring system number The measurement starts The following values are shown constantly on the display during measurement e Torque M mNm e Calculated viscosity n mPas rounded on 50 mPas e Measurement system no e g 1 Rheomat 123 takes several values per second and forms an average value which is shown During measurement time of 30 s values can be read continuously After 30 s the measurement is finished The measuring bob stops and the result can be read on the display Please confirm with the arrow key Now the next measurement can be started Note Rheomat R 123 can measure between 0 25 and 10 mNm If the torque is too high please choose a smaller measuring bob If the torque is too low please choose a bigger measuring bob 6 2 1 Termination of measurements To terminate a single point measurement eithe
7. ese from the proRheo R 123 You can use appropriate solvents for the measurement systems Measuring bob or adapter must be taken off the bayonet coupling at least once a week for cleaning At no time liquids may enter the Rheomat R 123 This can happen e g if the in strument is turned upside down for cleaning purposes The user has to take care that this does not occur Rheomat R 123 10 7 2 2 Calibration and testing The proRheo R 123 can be calibrated only by proRheo service Special instruments and specialized knowledge are required For service and calibration proRheo offers service contracts A form for ordering a ser vice or calibration contract is attached to this user manual To test whether the instrument needs a calibration you can use calibration oils for vis cosity measurements Glycerine hygroscopic and water viscosity too low are not suitable for testing pur poses 7 3 Errors and malfunctions Torque too high Viscosity of the sample is too Use smaller measurement se system Torque too low Consistence of the sample is Use bigger measurement bob too liquid for the used meas uring system Try again Unreasonable input e g See user manual for possible measuring system no 5 entries in this dialog with R 123 are possible The green lamp of the power Not attached to power sup Check power supply supply unit does not light up ply or power supply defective The display shows The entries are
8. n adapter is delivered which allows using the old measuring systems of VT 02 Note If the adapter is used it must be taken out and properly cleaned minimum once a week Rheomat R 123 T 6 Measurements 6 1 Preparation The measuring cup must be filled very carefully Air bubbles in the sample have an effect on the measurement result The stirring up and filling in of the sample corresponds to a pre shearing and might influence the re sult An adapted time of rest before measuring can have positive effects but for exam ple the possibility of sedimentation has to be kept in mind 6 1 1 Thermostating As the viscosity of a sample usually depends on the temperature we recommend to temperate the sample 6 1 2 Zero adjustment A zero adjustment should be done befor the first measurement and after each change of measuring system Connect the desired measuring bob Attention the measuring bob may not yet be dipped into the sample Press the key 0 zero and simultaneously switch on the proRheo R 123 As long as the instrument executes the zero adjustment the display shows gue Su Then the following display appears proRheo R 123 Note a Do not touch the measurement bob while performing the zero adjustment b The zero adjustment is stored c Whenever possible you should perform the zero adjustment after the in strument has warmed up Allow the proRheo R 123 to run one measure ment before you start the zero adjustment 6 2 M
9. r press the arrow key or Switch off the instrument Rheomat R 123 9 7 Appendix 7 1 Using remarks If the instrument is opened any claims on service or warranty expire At an opened and net connected instrument risks to life and limb of the user may occur Sensible parts or components under voltage are not specially marked At no time liquids may enter the Rheomat R 123 This can happen e g if the instru ment is turned upside down for cleaning purposes The user has to take care that this does not occur If a liquid cryostat or similar instrument is used no steam may enter the Rheomat R 123 This may cause trouble The user has to take care that this does not occur The Rheomat R 123 may not be dipped into any liquid deeper than to the lower edge of the measuring bob holder The user has to take care that this does not occur 7 2 Maintenance Warning The Rheomat R 123 and the power supply may be opened by qualified service engineers only Opening the Rheomat R 123 or the power supply any warranty or service claims ex pire At an opened and power connected instrument a risk to life and limb for the user may occur Sensible parts or components under voltage are not specially marked 7 2 1 Cleaning If the measuring head drive shaft coupling or stand are really dirty or badly con taminated clean only with a cloth moistened with soapy water gasoline or alcohol To clean the measuring bob and measuring tube always uncouple th
10. rement e 0 d 1 f 2 t 3 sp 4 hl 5 Terminates single point meas lt Delete e Confirmation that the measuring result was read Rheomat R 123 5 5 Settings 5 1 Language When you switch on the Rheomat R 123 for the first time the display is in English For your daily work you can choose between 6 operation languages Exceptions are the words LANGUAGE and TRY AGAIN Press the point key and switch on the instrument simultaneously LANGUAGE appears on the display Enter one of the following numbers for your language 0 English 1 Deutsch 2 Francais 3 Italiano 4 Espanol 5 Nederlands Press the E key to confirm the entry Your language is stored by the proRheo R 123 until you define a different one 5 2 Measurement systems The Rheomat R 123 can be operated with 3 different measuring systems These are Bob No 1 No 2 No 3 According to their measuring system number the bobs are marked with one two or three grooves Rheomat R 123 6 For example bob no 2 2 Grooves H gt Filling mark The measuring bobs are to be used with their original measuring cup Especially with measuring bob 3 it has to be taken into account that the measuring cup is in centric position Here fore a coupling piece is used It eases the measurement and guaran tees measurement accuracy The original measuring bobs come with a coupling matching with the bayonet of the driving axis In addition a
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