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mikron 81 conductivity meter

Operations manual

mikron 81

leitfähigkeitsmeßgerät

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Summary of Contents for 81.240.0101

Page 1: ...mikron 81 conductivity meter Operations manual mikron 81 leitf higkeitsme ger t...

Page 2: ...9 0 3 31 96 79 75 02 E Mail info ff runge de Internet www ff runge de We reserve the right to make changes Reprints even for excerpts not permitted Runge is a registered trademark of Wissenschaftliche...

Page 3: ...ations 6 Intended use 6 Occupational safety 7 Ambient conditions 7 An overview of the detector 8 Technical data 9 Method of measurement 10 Equipment delivered 11 Setting up 12 Mounting fastening 12 Li...

Page 4: ...on 18 Determining the specific temperature coefficient for the material 19 Rinsing cleaning and storing the measurement cell 19 Replacing the measurement cell 20 Calibration 22 Trouble shooting 23 Ann...

Page 5: ...the form of a test head This gives you new application possibilities Important aims in its development were durability ease of maintenance and a good price performance ratio We develop and produce all...

Page 6: ...ion Runge cannot accept responsibility for damage caused by not following these instructions Intended use This detector is to be used in analytical and preparative liquid chromatography equipment and...

Page 7: ...s the Health and Safety authority in Australia Safe Work Australia and in New Zealand Worksafe In the United States of America it is the OSHA in Canada the CSC Ambient conditions The detector is to be...

Page 8: ...f the detector 1 2 3 4 5 6 3 3 3 1 measurement cell various types can be supplied 2 detector block 3 liquid joint 4 status indicator 5 electrical connection USB C or RS 485 6 name plate Fig 1 The mikr...

Page 9: ...100 linear 0 002 100 mS cm Z 50 cm indicating 0 010 500 linear 0 010 300 Conductivity accuracy Z 10 cm 2 1 mS cm the higher value applies Z 50 cm 2 2 mS cm the higher value applies Conductivity scann...

Page 10: ...measured with a high degree of accuracy by applying an AC voltage to a cuvette either filled with the liquid or subjected to a flow of the liquid of known measurements cross sectional area separation...

Page 11: ...ent range of the detector can be adapted for the measurement task in each case The materials moistened by the liquid PEEK for the body of the cell titanium for the electrodes PTFE for the seals are bi...

Page 12: ...constrict the cross section and otherwise the housing would be deformed A suitable means of fastening is for example pipe clips conforming to DIN 3015 As liquid only flows through the measurement cel...

Page 13: ...by the detector care must be taken that leakages are discovered in time 1 1 outlet overflow 2 alignment groove Fig 3 Table mounting Fig 4 Preferred position for fastening clip Fig 5 Measurement cell...

Page 14: ...ll 53 l di bore 2 2 mm 1 4 28 UNF flat 81 240 0102 50 Vcell 11 l di bore 1 0 mm 1 4 28 UNF flat Two pairs of appropriate joints are supplied with the apparatus The order of the joints is shown in Fig...

Page 15: ...ector and is controlled and supplied with energy via the connector The USB C type plug is constructed symmetrically and hence can be plugged in in two directions Fig 7 Liquid joints alignment of the p...

Page 16: ...r active USB hub is switched on The light source s are switched on and off via a separate command Display of the operating status The mikron 81 detector can only be remotely controlled via a computer...

Page 17: ...the time constant defines the communication of the signal within the chosen time interval The longer the interval the lower the noise level and the time based resolution is also lower This should be k...

Page 18: ...s shown in Fig 8 equation 1 For a few materials e g natural water a non linear function in accordance with DIN 7888 is applicable The mikron 81 is fitted with a linear temperature equalisation device...

Page 19: ...ion function of the mikron 81 must be switched off The measurement temperature should be at least 10 C higher than the reference temperature Rinsing cleaning and storing the measurement cell The clean...

Page 20: ...he measurement cell Before disassembling the detector it must be ensured that it is not under electric tension plug removed After the Allen screws visible at the end cap have been loosened they can be...

Page 21: ...erted which conduct electrical current the electronics can be damaged as a result of electrostatic discharge After the measurement cell has been changed the detector must be calibrated for conduc tivi...

Page 22: ...er another In each case after the measurement cell value has stabilised the calibration command is issued via the chromatography data system or the terminal To avoid electrical contact with the measur...

Page 23: ...on taken Status indicator red Measurement cell not detected Make sure connector is plugged in Internal calibration defective Inform customer service Conductivity still shown on display as zero Contact...

Page 24: ...block broken Make sure connector is plugged in Temperature sensor within the measurement cell defective Replace measurement cell Unstable or noisy basis line Bubbles in the solvent Use degassed solve...

Page 25: ...11 l di bore 1 0 mm 00 321 0034 Knurled head screw 1 4 28 UNF for capillary tube do 1 8 PEEK 00 321 0035 Knurled head screw 1 4 28 UNF for capillary tube do 1 16 PEEK 00 321 0044 Ferrule for knurled...

Page 26: ...01 USB C to USB A cable length 1 5 m 00 522 0002 USB C to USB A cable length 1 0 m 00 522 0003 USB C to USB A cable length 3 m 00 522 0004 USB C to USB A cable length 5 m 00 522 1001 RS 485 cable M5 r...

Page 27: ...GLP detector specifications Component Specification apparatus serial number firmware version number of switching cycles operating hours date of last maintenance by customer service date of last validi...

Page 28: ...C Corresp net wt NaCl g l at 25 C 1 Water de mineralised 10 0 001 0 2 KCl 10 50 28 6 3 KCl 10 100 57 6 1 KCl 0 1 mol l 50 12 88 7 3 2 KCl 1 mol l 50 111 88 64 1 3 KCl 50 300 172 1 Check conductivity...

Page 29: ...EU EMC electromagnetic compatibility directive 2011 65 EU Directive on the restriction of hazardous substances in electric and electronic equipment 2012 19 EU Directive regarding waste electrical and...

Page 30: ...cable UK Regulations and carries the UKCA marking accordingly Category Standard Classification Safety BS EN 61010 1 2010 Amd 1 2016 Equipment Class I Pollution Degree 2 BS EN 61010 2 010 2020 EMC BS E...

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