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Summary of Contents for runge mikron 81
- Page 1 81 leitfähigkeitsmeßgerät mikron 81 conductivity meter Operations manual...
- Page 2 We reserve the right to make changes Reprints – even for excerpts – not permitted Runge is a registered trademark of Wissenschaftliche Gerätebau „F. F. Runge“ GmbH. Any other marks and protected trademarks named in the following are the property of their respective owners.
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Page 3: Table Of Contents
Table of contents Introduction................................5 Safety regulations............................... 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 Liquid connectors.......................... 14 Electrical connection........................ - Page 4 Operation................................16 Switching on and off........................16 Display of the operating status....................16 Choice of data rate and time constant..................17 Measurement by temperature equalisation................18 Determining the specific temperature coefficient for the material........19 Rinsing, cleaning and storing the measurement cell...............19 Replacing the measurement cell....................
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Page 5: Introduction
Important aims in its development were durability, ease of maintenance and a good price/performance ratio. We develop and produce all Runge instruments in Germany. We rely on competent suppliers in Brandenburg and in Berlin. We hope that you will be satisfied with our detector... -
Page 6: Safety Regulations
Consequently read these operating instructions carefully before put- ting the detector into operation. 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 in general for the photometric analysis of liquids. -
Page 7: Occupational Safety
Occupational safety When using the apparatus observe the health and safety regulations (among others those concerning protective clothing and laboratory equipment). In the United Kingdom, relevant information is provided by the Health and Safety Executive. In Ireland it is the Health and Safety authority, in Australia, Safe Work Australia and in New Zealand, Worksafe. -
Page 8: An Overview Of The Detector
An overview of the detector 1 measurement cell (various types can be supplied) 4 status indicator 2 detector block 5 electrical connection (USB-C or RS-485) 3 liquid joint 6 name plate Fig. 1: The mikron 81 detector... -
Page 9: Technical Data
Technical data Type mikron 81, conductivity meter Conduct. measuring range mS/cm (Z=10/cm) indicating 0.002 … 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... -
Page 10: Method Of Measurement
Method of measurement The concentration, valence and mobility of the ions dissolved in the liquid indicates its composition, for example the salt content. The electric conductivity of the liquid is proportional to the aforementioned ion properties, with their mobility depending on the temperature of the liquid. -
Page 11: Equipment Delivered
The materials moistened by the liquid (PEEK for the body of the cell, titanium for the electrodes, PTFE for the seals) are biologically compatible. Equipment delivered • Runge mikron 81 conductivity meter • connecting cable for USB-C to USB-A • operating instructions •... -
Page 12: Setting Up
Setting up Mounting, fastening With the table mounting delivered, the mikron 81 detector can be operated in a laboratory, but can also be inserted into a device insofar as the ambient conditions (temperature, humidity, composition of the atmosphere) are maintained. - Page 13 measurement cell (Fig. 6). As leakages are not recognised by the detector, care must be taken that leakages are discovered in time. Fig. 3: Table mounting Fig. 4: Preferred position for fastening clip 1 outlet overflow 2 alignment groove Fig. 5: Measurement cell at the bottom Fig.
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Page 14: Liquid Connectors
Liquid connectors The mikron 81 detector can be fitted with various measurement cells. These cells use the following joints: Part number Cell constant (1/cm) Cell geometry Joint 81.240.0101 = 53 µl, d = 2.2 mm 1/4″-28 UNF flat cell i, bore 81.240.0102... -
Page 15: Electrical Connection
3 Tubing Electrical connection The mikron 81 is connected to a computer via a USB connector 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. -
Page 16: Operation
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. The apparatus has a 3-coloured status display. This can show the following three operating states:... -
Page 17: Choice Of Data Rate And Time Constant
Colour Type Meaning yellow steady light startup test in process steady light error Choice of data rate and time constant Data rate and time constants concern the processing of the measured signal in the detector before outputting to the computer. The data rate determines the quantity of data points per second on the time axis of the chromatogram, and the time constant defines the communication of the signal within the chosen time interval. -
Page 18: Measurement By Temperature Equalisation
DIN 7888 is applicable. The mikron 81 is fitted with a linear temperature equalisation device. Furthermore, the specific temperature coefficient (in %/°C) of the material investigated, which can be looked up in chemical tables, will be added to the chromatography programme. -
Page 19: Determining The Specific Temperature Coefficient For The Material
2 of Fig. 8. In this case, the temperature equalisation function of the mikron 81 must be switched off. The measurement temperature should be at least 10 °C higher than the reference temperature. -
Page 20: Replacing The Measurement Cell
with this solution, exposed to it for two or three minutes and then rinsed out thoroughly several times with distilled water. When storing the measurement cell for some time without use (longer than two weeks) the cell is first of all rinsed or cleaned and residual liquid is then forced out from the cell’s interior using compressed air. - Page 21 The plug and socket strips of the electronic modules are protected against accidental contact. When objects are inserted 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- tivity (but not for temperature).
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Page 22: Calibration
max. 12 mm / 0.5 in. deep! 1 Detector 2 Tubing with screw-on ferrule Fig. 10: Calibration with syringe 3 Syringe with blunt needle Calibration The detector is calibrated in the factory with respect to conductivity and temperature. The conductivity can, if required, be re-calibrated by the user, for example after the measurement cell has been changed. -
Page 23: Trouble Shooting
Trouble shooting The following table helps when correcting faults occuring in daily use Error description Possible cause Explanations and action taken Status indicator red Measurement cell not detected Make sure connector is plugged in Internal calibration defective Inform customer service Conductivity still shown Contact between cell and Make sure connector is plugged in... - Page 24 Error description Possible cause Explanations and action taken Temperature display still Contact between cell and Make sure connector is plugged in shows 0 / 100 °C detector block broken Temperature sensor within the Replace measurement cell measurement cell defective Unstable or noisy Bubbles in the solvent Use degassed solvent basis line...
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Page 25: Annexe 1: Spare Parts List
Annexe 1: Spare parts list The spare parts listed can be ordered directly from Runge or one of Runge's distributors. Part number Designation 81.240.0101 Measurement cell conductivity, Z=10/cm, 53 µl, d = 2.2 mm i, bore 81.240.0102 Measurement cell conductivity, Z=50/cm, 11 µl, d = 1.0 mm... - Page 26 Part number Designation 00.522.0001 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 round plug – four open leads), length 5 m...
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Page 27: Annexe 2: Glp Detector Specifications
Annexe 2: 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 validity check... - Page 28 Annexe 3: Recommended calibration points Substance Cell constant Conductivity Corresp. net wt. NaCl 1/cm mS/cm at 25 °C g/l at 25 °C * Water, de-mineralised < 0.001 28.6 57.6 KCl 0.1 mol/l 12.88 KCl 1 mol/l 111.88 64.1 172.1 * Check conductivity of solutions you have produced yourselves by using a reference device compensated for tempe- rature.
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Page 29: Conformity Declaration
David-Gilly-Straße 1 14469 Potsdam, Germany Model: conductivity meter mikron 81 (Typ 81) We declare hereby that the preceding designated product conforms in its conception and type of construction and also the design lauched on the market to following directives: 2014/35/EU... -
Page 30: Declaration Of Conformity Acc. To Bs En Iso/Iec 17050-1
UK Declaration of Conformity acc. to BS EN ISO/IEC 17050-1 Wissenschaftliche Gerätebau „F. F. Runge“ GmbH, David-Gilly-Straße 1, 14469 Potsdam, Germany declare under sole responsibility that the product as originally delivered Conductivity meter mikron 81 (Typ 81) complies with the essential requirements of the following applicable UK Regulations, and carries the UKCA marking...
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