Operating Instructions for POLYVISC® FV flow
Contents
1. 6 22 SAFETY CONCEPT wccccsscseccces eere e eoa E ne eae Fe cavedenedaseiacscasedgacdatelictcn 6 2 2 1 INTENDED USE OF THE EQUIPMENT eene 6 2 2 2 IMPROPER 05 88 0 6 223 lt 5 7 2 2 4 DANGER 200 2 8 2 2 5 AREAS 5 rennen 8 2 2 6 GENERAL SAFETY RULES 48460808800228 re rire reis 9 2 3 RESIDUAL DANGERS RR RR Ress Ra 9 2 WARNINGS erre ioco Fuse rao Eire Eo DUE 9 3 DESCRIPTIOIN OF LABORATORY EQUIPMENT 10 3 1 PRINCIPLE OF MEASUREMENT s cssssssssssesssessssssssessseessesrsesssesssneesneensees 10 3 2 RANGE OF 10 3 3 WORKINGMETHOD 11 3 4 ALTERING THE 12 12 3 5 TECHNICAL 1 31 13 A INSTALLATION a a aai 13 4 1 nnmn2. 79 e 2 MUNI Dispersing and Mix Saige Dispersing and Mixing Technology 1 3 WARNING NOTICES Please be aware of the meaning of the following warning signs Safety instructions must be observed to ensure safe operation This symbol indicates high voltage with risk to health and environment BA POLYVISC FV english Edition 1 1 04 03 09 Page 5 von 16 r M a M amm OISPERSING AND MIXING TECHNOLOGY BY KINEMATICA Masses EEE DISPERSING AND MOUNG TECHNOLOGY BY KINEMATICA MENNEEF UE DISPERSINO AND TECHNOLOGY BY KINEMATICA Eu DISPERSING AND MIXING TECHNOLOGY DY KINEMATICA MEE F3 KINEMATICA AG 2 S ku d Dispersing and Mixing Technology 2 SAFETY This chapter is directed at all users of KINEMATICA laboratory equipment It includes information on safe and optimum use 2 1 SUMMARY Any incorrect use of the installed equipment can be dangerous Inadequately trained users can cause material damage and personal injury This chapter informs you of the safety concept and the requirements for safe and optimum use of the equipment All those authorised to operate service and repair the equipment are required to study chapter 2 Safety 2 2 SAFETY CONCEPT The safety concept sets down the entitlement to use the equipment and the responsibilities of the individual users The machines and equipment are designed and constructed according to the state of the art and the recognised safety rules 2 2 1 IN
3. ost 179 S 3 TS 4 NV Dispersing and Mixing Technology de UU Operating Instructions for POLYVISC FV flow viscometer Voltage 4 x 1 5 V Batteries This is a quality product of c KINEMATICA AG a Dispergier und Mischtechnik Luzernerstrasse 147a Tel 41 41 259 65 65 CH 6014 Luzern Fax 41 41 259 65 75 Schweiz e mail laboratory kinematica ch re AEE DISPERSING AND MIXING TECHNOLOGY BY KINEMATICA EN UE DISPERSING AND MOUNG TECHNOLOGY BY I EEE DISPERSING AND MUONG TECHNOLOGY BY KINEMANCA I DISPERSING AND MIXING TECHNOLOGY BY KINE KONEMATICA eomm SR 45 Di i d Mixing Technol 9 ispersing and Mixing Technology 1 INTRODUCTION cereos eie ge eoo Co Eu o Ea CH views ce esa eo aaa aaan 1 1 OPERATING INSTRUCTIONG cscssssssssssssssesssesssesssesssssssneesseesseesseerseerseesaseess 1 1 1 RANGE 1 1 2 TARGET 002080180 1 2 ORGANISATIONAL 65 22 2 22 1 1 1 1 2 1 LOCATION OF THE OPERATING INSTRUCTIONS erm 4 1 2 2 MANUFACTURER AND CONTACT ADDRESS 0 4 1 3 WARNING 65 2 2 0 Rasa RR RR RR SR SR sa RR Rar s raE 5 UNES T 6 2 1 SUMMARY fm
4. BA POLYVISC FV english Edition 1 1 04 03 09 Never immerse the instrument completely in water The pressure so that water may enter and damage Page 13 von 16 P d amm DISPERSING AND MIXING TECHNOLOGY BY KINEMATICA Ma DISPERSING AND MING TECHNOLOGY BY KINEMA m m PERSING AND MUGNG TECHNOLOGY BY KINEMANCA ST DISPERSING AND MIKINO TECHNOLOGY DY KINEMATICA mummy STF 7 aS 29 aS 5443 KINEMATICA AG 7772549 i i ixi NS Dispersing and Mixing Technology 5 2 SERVICE amp CALIBRATION The POLYVISC flow viscometer requires a regular and thorough cleaning but no special maintenance Only the batteries have to be exchanged when down The display of the instrument shows in these cases BAT The POLYVISC flow viscosimeter is a measuring instrument which however does not work according to internationally acknowledged norms The displayed measurement results are not absolut values of viscosities but values of flowspeeds for comparative measurement The POLYVISC is applied for many different products as a measuring instrument In order to comply with the requirements of the ISO quality management system the unit has to be regularly checked and calibrated if needed Checking To check the measuring results you can use an internal reference liquid When an error of measurement of 10 96 is reached we suggest a new calibration
5. Calibration This can only be done by the producer or a specially equipped KINEMATICA Service Center For each calibration a test certificate is issued We suggest a yearly calibration 5 3 BREAKDOWN The POLYVISC flow viscometer is a very reliable instrument However it is possible that in certain cases some faults might occur For instance the instrument is made of many electronic components and is therefore susceptible to blows Should the instrument breakdown for any reason only the producer or a specially equipped KINEMATICA Service Center can repair it BA POLYVISC FV english Edition 1 1 04 03 09 Page 14 von 16 r M am am AEE DISPERSING AND MIXING TECHNOLOGY BY Mar EEE DISPERSING MOUNG TECHNOLOGY KINEMATICA EEE OISPERSING AND TECHNOLOGY BY KINEMATICA ammm DISPERSING AND MOUNO TECHNOLOGY DY KINEMATICA mumur a 93 KINEMATICA Dispersing and Mixing Technology 6 TROUBLE SHOOTING PROBLEM REASON SOLUTION Display shows Channel is dirty Clean the channel and repeat the measuring TROUGH DYRTY and Measurement stops Display shows BAT Battery Voltage Change the batteries When changing will take to 4x1 5V after is low much time the stored last result and the selected activation measurement period will be lost and has to be reset LAST RESULT will be displayed as Changing batteries does not affect any calibration No displayed
6. UE DISPERSING AND MOUNG TECHNOLOGY BY KINEMATICA MENNEEF UE DISPERSING AND MDUNG TECHNOLOGY BY KINEMATICA su DISPERSING AND TECHNOLOGY KINEMATICA mummu
7. data Display or Send the equipment to the nearest authorised visible electronics AG service centre or directly to be damaged KINEMATICA AG 7 GUARANTEE KINEMATICA AG guarantees that the equipment that it produces will run free of any fault related to materials or manufacturing faults for 12 months If thorough testing shows a fault to be due to either of the above causes KINEMATICA AG guarantees that the equipment will be repaired or replaced free of charge The guarantee does not cover parts that are subject to normal wear It is void if any person other than an employee of KINEMATICA AG or their appointed representative has made modifications to the equipment or if the damage is due to failure to comply with the operating instructions to carelessness accident incorrect use or incorrect supply voltage KINEMATICA AG reserves the right to make technical changes to the equipment without modifying equipment delivered earlier in the same way In the event of technical problems for spare parts requirements or for advice contact our regional appointed agent your preferred dealer or us directly at KINEMATICA AG Luzernerstr 147a Tel 41 41 259 65 65 CH 6014 Lucerne Fax 41 41 259 65 75 Switzerland e mail laboratory kinematica ch BA POLYVISC FV english Edition 1 1 04 03 09 Page 15 von 16 r M M am amm OISPERSING AND MIXING TECHNOLOGY BY KINEMATICA ST UE DISPERSING MOUNG TECHNOLOGY B
8. NG THE MEASUREMENT PERIOD Measuring times between 10 seconds and 10 minutes can be individually set on the DIL switch To do this carefully open the battery compartment on the underside of the POLYVISC and swing the battery out without breaking contact with the points ON 1 IDIL 1 calibration light diode LED ON calibration light diode LED OFF operative measuring time OFF measuring range 10 20 secs Warning measuring range 20 40 secs measuring range 40 80 secs The switches 3 to 8 can only be used measuring range 80 160 secs when the measuring switch is on measuring range 160 320 secs measuring range 320 640 secs A measuring time of 60 seconds is to be selected Observe the following instructions step by step and alter the DIL switch positions with a small screwdriver 1 DIL 1 ON calibration LED is switched 2 DIL 2 ON operating control of measuring times 7 5 17 30 secs is switched off 3 DIL 5 ON measuring range 40 80 secs is switched on 4 Place calibrating potentiometer in an average setting 5 Begin measuring time by inserting and extracting the sliding attachment in the flow channel 6 The LED is illuminated during the measuring time Determine the exact length with a stop watch and set the calibrating potentiometer at 60 secs to the right to the left 7 DIL 1 OFF calibrating LED is switched off 8 place batteries in the right position and completely close the battery compartment
9. TENDED USE OF THE EQUIPMENT The equipment is designed and constructed for the following use The determination of flow characteristics of flowable and electroconductive fluids with a minimum viscosity of 6000 cP mPa s If you use the equipment for any purpose other than those listed the manufacturer cannot be held liable for any resulting damage 2 2 2 IMPROPER USE Any use other than the proper use without the written approval of the manufacturer or operation outside the technical limits of use is improper use BA POLYVISC FV english Edition 1 1 04 03 09 Page 6 von 16 r M a A AE DISPERSING AND MIXING TECHNOLOGY BY KINEMATICA mmy ammm DISPERSING AND MOUNG TECHNOLOGY KINEMATICA EEE OISPERSING AND TECHNOLOGY BY KINEMATICA NN ammm DISPERSING AND MOUNO TECHNOLOGY DY KINEMATICA mumur F3 KINEMATICA AG 2 S ku d Dispersing and Mixing Technology 2 2 3 USER ROLES To guarantee safety we place requirements on the users of the equipment that must be met without fail Only persons meeting the requirements are authorised to work with the equipment We describe all those who work with the equipment as users Since the requirements of these users are very much dependent on their activity we distinguish the following user roles Contract partner The manufacturer can impose legal obligations on the contract partner when the equipment is purchased The contract partner is o
10. Y KINEMATICA MENNEEF UE DISPERSING AND MOONG TECHNOLOGY BY KINEMATICA NN sum DISPERSING AND MOUNG TECHNOLOGY KINEMATICA mummu 21 06 KINEMATICA AG Dispersing and Mixing Technology Appendix 1 Spare Parts List Part ID No 4 x Batterien 1 5 V 9305749 Gasket for Battery Box 9340420 Slider 9850014 Appendix 2 List of chemical resistance Chemicals Grade of Resistance weak lt resistance acids strong 0 mean resistance idisi 0 limited resistane good resistance hydrofluoric acid very good resistance b strong di weak This table shows the alcohols grade of chemical esters resistace of the solvents ketones housing material ABS aether B VO against common halogen alkene a chemicals benzene atrol fuels amp oils benzine 0 mineral oil Appendix 3 Dimensions amp ID No POLYVISC FV ZAIPOLYWASGL 57 3 Assemby Group Identification Order No Production No Product Identification POLYVISC FV POLYIVISC FV POLYVISC FV 9400000 9400000 Standard Version POLYVISC is registred Trademark of KINEMATICA AG Luzern SWITZERLAND BA POLYVISC FV english Edition 1 1 04 03 09 Page 16 von 16 r M M amm OISPERSING AND MIXING TECHNOLOGY BY KINEMATICA S
11. Your POLYVISC is now ready for measurement for a duration of 60 seconds In case of other individual measuring times follow the same procedure BA POLYVISC FV english Edition 1 1 04 03 09 Page 12 von 16 r M amm OISPERSING AND MIXING TECHNOLOGY BY KINEMATICA ST UE DISPERSING AND MOUNG TECHNOLOGY BY KINEMATICA MENNEEF UE DISPERSING AND MUONG TECHNOLOGY BY KINEMATICA NN sum DISPERSING AND MOUNG TECHNOLOGY DY KINEMATICA MEE 7 93 Dispersing and Mixing Technology 3 5 TECHNICAL SPECIFICATIONS POLYVISC FV flow viscometer Voltage 6 x 1 5 V Batteries Ambient Temperature max 40 C Productemperature max 80 Humidity 90 96 Protection Class IP 54 Working Time continuous working Min Viscosity of Medium being measured approx 6000 mpas Housing material acrylic butadiene styrene ABS VO Dimensions 114 x 57 x 325 mm Weight 900 g 4 INSTALLATION 4 1 UNPACKING Open the dispatch box and check that the contents agrees with the delivery note 5 MAINTENANCE 5 1 CLEANING The POLYVISC flow viscometer can be easily cleaned using lukewarm water Avoid Check all parts for possible transport damage Inform us or your dealer immediately of any disagreement or fault mechanical cleaning with rough brushes Never use the slider for cleaning may weaken the gaskets electronic components
12. bliged to ensure that the equipment is properly used Operating company The operating company ensures that the equipment is properly used and authorises persons who are entitled to work with the equipment in any one of the defined user roles He is under the obligation to instruct the users Note Contract partner and operating company can be the same person Service technician The service technician is an employee of the operating company and looks after the equipment in special operating mode s He is a specialist with mechanical electrical and electronic professional training service technician undertakes commissioning decommissioning service and repair of the equipment He must be appropriately trained to be able to carry out the service work required Operator The operator turns the equipment on and off In the event of an alarm signal he informs the service technician BA POLYVISC FV english Edition 1 1 04 03 09 Page 7 von 16 r M ee nd AEE DISPERSING AND MIXING TECHNOLOGY BY KINEMATICA ST DISPERSING AND MOUNG TECHNOLOGY KINEMATICA MENNEEF EEE DISPERSING AND MIXING TECHNOLOGY BY KINEMATICA NN uu DISPERSING AND MOUNO TECHNOLOGY DY KINEMATICA Si 2 9 KINEMATICA AG Tm Dispersing and Mixing Technology i ExNet gt A Ay 7 2 CEMENTS 2 2 4 DANGER AREA System equipment The system danger area includes the whole system equipment including the connecting lead a
13. e slider in the mounting groove of the flow channel The POLYVISC is now ready for measurement display 00 tolerance 00 10 BA POLYVISC FV english Edition 1 1 04 03 09 Page 11 von 16 r M M M amm DISPERSING AND MIXING TECHNOLOGY BY KINEMATICA Mar EEE DISPERSING MOUNG TECHNOLOGY KINEMATICA mmm EEE DISPERSING AND MOONG TECHNOLOGY BY KINEMATICA NN ammm DISPERSING AND MOUNO TECHNOLOGY DY KINEMATICA mumur as 4 KINEMATICA AG ispersing and Mix inne Dispersing and Mixing Technology 4 Fill in the product to be measured For reproducible results always use the same batch size and keep the POLYVISC as horizontal as possible 5 Activate the measurement by pulling out the slider fast and evenly 6 When the selected measurement period is up the result will be displayed during approx 10 then the display switches off automatically If the product to be measured has already reached the end of the flow channel before the selected measurement period is up a shorter measurement period should be selected 7 Emptying and cleaning of the POLYVISC The flow channel must be completely dry To check this place the slider in the flow groove of the flow channel If the display does not indicate 00 tolerance 00 10 dry the appliance thoroughly using warm air When you finished your series of measurement turn the main switch of to save battery power 3 4 ALTERI
14. efore switching on or attempting to use the equipment They describe the use of the POLYVISC PX FV flow viscometer its installation and maintenance and the appropriate replacement parts and accessories They will help you avoid erroneous use and consequent damage Although POLYVISC machines are designed for ease of service this does not release you from the obligation to inspect your equipment carefully and to clean it thoroughly KINEMATICA AG is a specialist manufacturer of machines and equipment for dispersion and mixing technology An important objective of these operating instructions is to fully inform you the user about the correct and safe use of our equipment In order to achieve this it is essential that you should carefully study chapter 2 Safety and follow the instructions in this book BA POLYVISC FV english Edition 1 1 04 03 09 Page 3 von 16 p M M amu DISPERSING AND MIXING TECHNOLOGY BY KINEMATICA Mal EEE DISPERSING AND MOUNG TECHNOLOGY KINEMATICA MENNEEF DISPERSING AND MIXING TECHNOLOGY BY KINEMATICA NN EEE DISPERSING AND MOUNO TECHNOLOGY DY KINEMATICA MEE 742 AG S Dispersing and Mixing Technology 1 1 1 RANGE OF VALIDITY The information in these operating instructions relates to the POLYVISC identified as follows Manufacturer KINEMATICA AG CH 6014 Lucerne Product name POLYVISC Type designation POLYVISC PX FV f
15. low viscosimeter Article number Description 9400000 POLYVISC PX FV flow viscosimeter 1 1 2 TARGET AUDIENCE These operating instructions are intended for all authorised users of our machines equipment We distinguish different user roles taking account of the different demands placed on the user by the activity to be carried out You will find the definitions of user roles with the demands on the user in chapter 2 Safety You can fulfil one or more of these roles provided that you meet the corresponding demands 1 2 ORGANISATIONAL MATTERS If you are unable to find the answer to any question in the operating instructions please contact the equipment manufacturer directly 1 2 1 LOCATION OF THE OPERATING INSTRUCTIONS The operating instructions can only be of use to you if you always have them to hand They should therefore always be kept at the place where the equipment is used 1 2 2 MANUFACTURER AND CONTACT ADDRESS KINEMATICA AG Luzernerstrasse 147a CH 6014 Lucerne TEL 41 41 259 65 65 FAX 41 41 259 65 75 e mail laboratory kinematica ch BA POLYVISC FV english Edition 1 1 04 03 09 Page 4 von 16 r M ee am amm DISPERSING AND MIXING TECHNOLOGY BY ST EEE DISPERSING AND MOUNG TECHNOLOGY KINEMATICA EEE OISPERSING AND MOONG TECHNOLOGY BY KINEMATICA NN ammm DISPERSING AND MIKINO TECHNOLOGY DY KINEMATICA mumur GEE SS lt gt 95
16. m technical faults safe and functions correctly BA POLYVISC FV english Edition 1 1 04 03 09 Page 8 von 16 r M M amm DISPERSING AND MIXING TECHNOLOGY BY KINEMATICA mmer EEE DISPERSING AND MOUNG TECHNOLOGY BY NEMA DAS PERSINO AND MOONG TECHNOLOGY BY ST EEE DISPERSING AND MING TECHNOLOGY DY KINEMATICA mummy 7 2 4 KINEMATICA AG Dispersing and Mix 9 Dispersing and Mixing Technology 2 26 GENERAL SAFETY RULES Observe the following general safety rules follow these operating instructions in addition observe the legal obligations and requirements for accident prevention and environmental protection of the country in which you operate the equipment do not make any modifications to the equipment without the written authorisation of the manufacturer W only original replacement parts may be used for repairs before any service work on the equipment it must be ensured that the electrical supply is switched off after any service maintenance or repair work has been carried out on the system equipment it must be given a test run by the service technician depending on the place at which it is installed circumstances may require that hearing protection is worn when remaining in the vicinity of the equipment for long periods 2 3 RESIDUAL DANGERS When the system equipment is used in accorda
17. nce with rules and regulations residual dangers are minimal RESIDUAL DANGERS Countermeasures Spillage of hot fluid Working carefully and wear protective clothing goggles etc 24 WARNINGS e The POLYVISC flow viscometer is suitable only for electroconductive fluids which have to be capable of flowing The POLYVISC flow viscometer is suitable for Product Temperatures up to 80 Higher Temperatures may cause a damage e The POLYVISC flow viscometer is not suitable for acidly and aggressive fluids That means your fluid should be free of thinners and similar chemicals See Appendix 2 for a detailed list of the chemical resistance of the housing material ABS VO against common chemicals CE Sign e KINEMATICA AG products comply with all the usual CE directives carry the CE marking and are delivered with a corresponding declaration of conformity BA POLYVISC FV english Edition 1 1 04 03 09 Page 9 von 16 r M am am amm OISPERSING AND MIXING TECHNOLOGY BY KINEMATICA mummy gu DISPERSING AND MOUNG TECHNOLOGY BY KINEMATICA MENNEEF UE DISPERSING ANO MDONG TECHNOLOGY BY KINEMATICA mumy sum DISPERSING AND MOUNG TECHNOLOGY KINEMATICA mummu eomm 0007 43 7779 mar Dispersing and Mixing Technology E22 Iw E Net 3 WE 11749 IOS ju S 1 S 2 3 DESCRIPTIOIN OF LABORATORY EQUIPMENT With the POLYVISC flow viscometer you received a very easy to
18. nd controls Proximity danger area This refers to all areas within a defined distance of the equipment User danger area This danger area includes all persons working with the equipment 2 2 5 AREAS OF RESPONSIBILITY In order that the system equipment can be used safely and without risk the users in various roles bear the responsibility for particular danger areas Contract partner The contract partner bears the responsibility for the proximity danger area Operating company The operating company bears the responsibility for the user danger area Only those users may be authorised to operate the system equipment who fulfil all requirements of the user roles concerned In so doing attention must be paid to the following points t is to be ensured that all users of the system equipment have fully read and understood chapter 2 Safety and act accordingly in a safety conscious manner It is to be ensured that no unauthorised person carries out work with the system equipment it is to be ensured that users are informed of the possible risks and dangers connected with the system equipment It is to be ensured that those being trained or engaged in general training are under the permanent supervision of a trained and authorised person Service technician The service technician bears the responsibility for the system equipment danger area He ensures that the system equipment is at all times free fro
19. nn nnmnnn 13 5 MAINTENANCE 13 LOS MEL OH S NI eme 13 5 2 SERVICE amp 14 5 3 BREAKDOWN 14 6 TROUBLE 4 2 1 1 1 1 6 15 7 15 POLYVISC FV english Edition 1 1 04 03 09 Page 2 von 16 r M am A amm OISPERSING AND MIXING TECHNOLOGY BY KINEMATICA ST uu DISPERSING AND MOUNG TECHNOLOGY BY KINEMATICA MENNEEF DISPERSING AND MOONG TECHNOLOGY BY KINEMATICA NN OISPERSING AND MOUNG TECHNOLOGY KINEMATICA mummu 43 KINEMATICA S ku d Dispersing and Mixing Technology 1 INTRODUCTION This chapter gives information on the the structure of this document It will assist you in making use of it and show how to find the required information quickly 1 1 OPERATING INSTRUCTIONS Please read through these operating instructions b
20. use and easy to maintain instrument to fast determine the flow behaviour of electroconductive fluids The Instrument is suitable for determination of flow behaviour down to a minimum viscosity of 6000 mpas To receive reproducibel results e Always fill the complete reservoir of your medium being measured Always place your instrument in the same horizontal orientation Wherever applicable place it at same location e The accuracy of your measurement may depend on the electrical conductivity of your working environment and the state of charge of the batteries 3 1 PRINCIPLE OF MEASUREMENT The POLYVISC instrument determines the area in the metering box which the fluid will cover during the preset measurement period The obtained result will be displayed digital as an average flow speed in mm sec This principle of measurement is capacitive so that it is only suitable for electroconductive fluids 3 2 RANGE OF APPLICATION The POLYVISC flow viscometer is made for the determination of the viscosity of fluids with uniformly distributed electrical conductivity and will be used for quality control in laboratory and fabrication The battery supplied instrument is easy and read to use at any place at any time Due to its mobility it can used directly on site for example directly at the bottling plant For comparative measurements of viscosity using the POLYVISC flow viscometer all capable of flow and thinner free fluids
21. with viscosity over 6000 mpas are are suitable Based on the following diagram a rough calculation of mPa s cP can be made It shows sugar syrup at a measurement period of 30 seconds BA POLYVISC FV english Edition 1 1 04 03 09 Page 10 von 16 r M P d amm DISPERSING AND MIXING TECHNOLOGY BY KINEMATICA Ma DISPERSING AND MING TECHNOLOGY BY KINEMA CAS PERSINO AND MOGNG TECHNOLOGY BY KINEMATICA ST EEE DISPERSING AND MING TECHNOLOGY DY KINEMATICA F3 KINEMATICA AG 2 S ku d Dispersing and Mixing Technology 25 C 201 1 0 50 4 60 70 80 90 100 110 120 5 3 3 WORKINGMETHOD 0 Activate the instrument using the switch at the backside 00 is displayed 1 The control functions of the PV will be activated using the built in magnet at the thicker side of the slider Activate the POLYVISC Measuring System by moving the slider along the left side of the housing where ON is written The result of the last measurement will be displayed automatically If the instrument has been turned off for a long time using the main switch the last result will not be displayed any more Instead 222 will be displayed 2 To select the measurement period move the slider to the right side of the housing 7 5 15 30 secs The position of the bar in the indicator field marks the chosen measurement period 3 Place th
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