Megger KF-LAB Mk II User Manual
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Megger KF-LAB Mk II User Manual

Moisture meter
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Megger KF-LAB
Mk II
Moisture Meter
User Guide
(v0816)

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Summary of Contents for Megger KF-LAB Mk II

  • Page 1 Megger KF-LAB Mk II Moisture Meter User Guide (v0816)
  • Page 2 Megger KF-LAB Mk II...

  • Page 3: Table Of Contents

    3.2 Connecting the Power Supply------------------------------------------- 9 3.3 Setting Up the Glassware------------------------------------------------- 10 3.3.1 Glassware Assembly------------------------------------------- 10 3.3.2 Connecting to the Megger KF-LAB------------------------- 10 3.3.3 Filling and Changing Reagents------------------------------ 11 3.4 Loading the Printer---------------------------------------------------------- 13 3.5 Connecting a USB Device------------------------------------------------ 14...
  • Page 4 Megger KF-LAB Mk II Chapter 8 Maintenance-------------------------------------------------------------------- 37 8.1 Reagent Life----------------------------------------------------------------- 37 8.2 Cleaning the Glassware-------------------------------------------------- 37 Chapter 9 Technical Specifications--------------------------------------------------- 39 Chapter 10 Parts List------------------------------------------------------------------------- 40 Chapter 11 Troubleshooting--------------------------------------------------------------- 41 Chapter 12 Conformity and Warranty-------------------------------------------------- 42 12.1 Declaration of Conformity--------------------------------------- 42 12.2 Quality Control----------------------------------------------------- 42...

  • Page 5: Chapter 1 Introduction

    Megger KF-LAB Mk II Chapter 1 Introduction 1.1 Instrument Description The KF-LAB model has a small footprint, is easy to use, and supplied complete with a specifically designed low drift cell which is also suitable for outdoor use. The built-in battery and optional carry case, provide the versatility required by the laboratory and also the ease of use and portability required by the field engineer.

  • Page 6: Principle Of Measurement

    Karl Fischer titration is simply a means to measure water content of samples. Modern instruments, such as the Megger KF-LAB, use the Coulometric principle, whereby the water present in the sample is coulometrically titrated to a predefined end point at which there is a minute excess of free iodine present.

  • Page 7: Instrument Connections

    Megger KF-LAB Mk II 1.3 Instrument Connections Various ports are located on the back plate of the instrument. Below is a list of ports that can be found: (1) Power Supply Port The power supply port is for connecting to an 18V mains power supply, using the supplied power adaptor.

  • Page 8: Chapter 2 Safety Information

    2.2 Electrical Safety The Megger KF-LAB Moisture Meter complies with the international standard IEC 61010. Only operate this instrument within the mains voltage supply that is specified on the back of the instrument, an incorrect mains supply can damage the instrument.

  • Page 9: Instrument Setup

    3.2 Connecting the Power Supply The Megger KF-LAB is powered by an external mains source, with a power pack to ensure this connection is the correct voltage of 18V DC for the instrument. Damage may occur beyond repair and the user may be subjected to electric static shocks if the incorrect power is supplied.

  • Page 10: Setting Up The Glassware

    Megger KF-LAB Mk II 3.3 Setting Up the Glassware 3.3.1 Glassware Assembly 3.3.2 Connecting to the Megger-KF LAB Moisture Meter (1) Position the titration vessel on the Titrator. (2) Position the electrodes on the titration vessel and tighten by hand.

  • Page 11: Filling And Changing Reagents

    3.3.3 Filling and Changing Reagents Megger KF-LAB Titrators have been designed to operate with all major Coulometric Karl Fischer reagents. For most routine applications generator electrodes with frit/diaphragm are used in conjunction with 100ml of anode reagent and 5ml of cathode reagent. We strongly recommend using Aquamax KF A and C Reagents as these have been specially formulated for oil samples.
  • Page 12 It is advisable to have the cathode reagent 2- 3mm lower than the anode reagent when first charging the titration vessel to speed up preconditioning. The Megger-LAB Titrator is now ready to be switched on.

  • Page 13: Loading The Printer

    Megger KF-LAB Mk II 3.4 Loading the Printer To load the paper into the printer, first open the paper roll holder lid above the print head and remove the old roll and rollers. Now fit rollers to new paper roll, load as shown and insert the paper into the slot at the rear of the print head.

  • Page 14: Connecting A Usb Device

    Megger KF-LAB Mk II 3.5 Connecting a USB Device To use the memory store, insert Flash Drive into USB port A, the Titrator will see it and a symbol will appear on the display. The symbol will appear blacked out while the drive is being written to and then clear when idle.

  • Page 15: Basics Of Operation

    Basics of Operation 4.1 Switching ON and OFF The Megger KF-LAB Moisture Meter has one I/O switch and is powered by either a mains power supply using an adaptor, or a built-in battery for power. Note: Refer to Chapter 3.2 for power supply connections.

  • Page 16: Preconditioning

    At the end of the precondition period the display will show: xxxx µg Drift Test After the initial drift has been calculated, in micrograms of water per minute, the Megger KF- LAB is ready for operation. Dft = 0 xxxx µg...

  • Page 17: Program Functions

    Megger KF-LAB Mk II 4.4 Program Functions When the Megger KF-LAB displays Ready you can enter titration parameters, recall or edit existing methods, enter new method files, etc., by using [PROGRAM], [ENTER], [CLEAR], and [.]. FUNCTION [PROGRAM] Press [PROGRAM] to scroll through menus listed.

  • Page 18: Programming A Method

    Mk II 4.5 Programming a Method After the initial drift has been calculated, in micrograms (µg) of water per minute, the Megger KF-LAB is ready for operation. It is now possible to step through the PROGRAM parameters and enter the required calculation data.
  • Page 19 Calculation Mode Megger KF-LAB Titrators have four standard calculation modes in memory. Each of these allow the instrument to divide the microgram count by the gram weight of sample introduced so that the calculated result can be printed out in either ppm or percentage of water.
  • Page 20 Megger KF-LAB Mk II 2. Weight/Dilution ratio W/K Note: Use this method if you need to dissolve a sample in another solvent. Suitable for samples which will not dissolve in the anode reagent or which might interfere with the KF reaction).
  • Page 21 Print Drift The Megger KF-LAB can be programmed to print out the drift value for each titration. This is a useful indicator of titration cell stability. If drift is above 25 µg / minute print will show **XX**.
  • Page 22 Beep after every key press and three times at the end of a titration Language The Megger KF-LAB can be programmed to show all display prompts and print outs in various languages. Use [.] to select language then press [ENTER].
  • Page 23 Megger KF-LAB Mk II Recall Method If any methods have been saved to memory then the first prompt (before Sample ID number) will be “Recall Method.” When this prompt is displayed, simply press the number of the method file you wish to recall and press [ENTER]. There are 10 method files available numbered from 0 to 9.

  • Page 24: Chapter 5 Running A Test

    Megger KF-LAB Mk II Chapter 5 Running a Test 5.1 Example Applications Liquid Samples Liquid samples are usually introduced into the titration vessel by using a syringe. The greater the amount of water introduced into the titration cell will cause the titration to take longer and also consume the reagents more quickly.
  • Page 25 1 %, then a sample size of 0·2 to 0·5 ml is suggested. Some lubricating oils contain additives which can react with the KF reagents interfering with the chemical reaction. For these applications we suggest using the Megger KF-LAB in conjunction with an oil evaporator as per ASTM D6304.

  • Page 26: Water Standard Test

    Water temperature of wet gas flow meter (°C) 5.2 Water Standard Test In principle, standardization of a Megger KF-LAB is not necessary since the water titrated is a direct function of the coulombs of electricity consumed. However it is recognised that...
  • Page 27 Megger KF-LAB Mk II Analysis Method (1) Confirm that the Megger KF-LAB is in Ready mode. (2) Flush 1.0ml syringe several times (minimum 6 times) with sample. (3) Fit luer needle and flush through with sample. (4) Draw sample into syringe beyond the 1.0ml marking.

  • Page 28: Drift Rate Compensation

    This ensures that the displayed result is corrected for any ingress of atmospheric moisture during the titration period. Whilst in the Ready condition, the Megger KF-LAB continually compensates for any drift caused by atmospheric moisture ingress or reagent decomposition and displays this information, which is updated every 10 seconds.

  • Page 29: Overtitration

    Megger KF-LAB Mk II − Sample introduced before pressing [START] key − Trace moisture on cell walls If excess drift occurs, switch the instrument off, remove titration cell from clamp, gently swirl the anode reagent around the cell walls, replace cell in clamp, switch instrument on and allow to precondition.

  • Page 30: Chapter 6 Results

    Results 6.1 Printout Explanation The Megger KF-LAB allows you to select different print modes. If you choose to have the printer on, you will receive a hard copy of the result obtained, together with the selected parameters for that particular titration every time a titration is performed.
  • Page 31 Megger KF-LAB Mk II Example of W/w Calculation Megger KF LAB V xxxx Serial No. 71000 Calibrated DD/MM/YYYY Run Date − Run number & time of analysis (N = generator no Run: 1 Run Time frit) Nett Count 0.0 μg −...

  • Page 32: Chapter 7 Results Manager

    Megger KF-LAB Mk II Chapter 7 Results Manager 7.1 Description Results Manager is a Windows application that allows you to view and print sets of results created by the Coulometric family of Karl Fischer Titrators. It can download results directly from the Titrators through a serial port connection, or open result files previously saved to disk.

  • Page 33: Running Results Manager

    Megger KF-LAB Mk II 7.3 Running Results Manager With the application running, five buttons across the top of the screen allows the user to carry out the functions that it provides as follows: Connect To establish a connection to a Titrator linked to the USB port on your PC, click the Connect button.

  • Page 34: Display Explanation

    Megger KF-LAB Mk II 7.4 Display Explanation Status Titrator and computer are connected or disconnected. Model Manufacturer model and software version. Serial # Instrument serial number. Calibrated Last date Titrator calibrated. Date Date analysis recorded. Results Total number of results recorded.
  • Page 35 Megger KF-LAB Mk II Prm1, Prm 2 & Prm 3 The sample data used for the calculation. These parameters change depending on calculation mode being used. Examples of the three main calculations are shown: Example: Calculation Mode V/SG Prm 1 & Prm 2 columns show Volume &...

  • Page 36: Closing And Uninstalling

    Megger KF-LAB Mk II Result Calculated result in the selected format. Flags If a letter appears in this column, click the question mark (?) for an explanation. 7.5 Closing and Uninstalling Closing Results Manager The standard close button (the X in the top right corner) will close the application. If results have been downloaded but not yet saved, you will be prompted to save them before closing.

  • Page 37: Maintenance

    (1) The physical size of the titration cell allows for 50 – 60mL of sample to be added. For the analysis of most liquid samples (e.g. solvents) Megger KF-LAB Titrators normally only requires a few micro litres to be injected, therefore the maximum volume of 50 –...
  • Page 38 THE FASTER THE INSTRUMENT WILL STABILISE READY FOR OPERATION AFTER RECHARGING REAGENTS. Under normal conditions, the Megger KF-LAB should be ready for operation within 5 – 10 minutes after reassembly, however it could take considerably longer before to completely stabilise if the drying procedure has not been properly carried out.

  • Page 39: Technical Specifications

    Megger KF-LAB Mk II Chapter 9 Technical Specifications Titration Method: Coulometric Karl Fischer Titration Electrolysis Control: Patented “ACE” Control System GB2370641 End Point Detection: AC Polarisation End Point Indication: Visual Display/Print Out/Acoustic Beep Titration Vessel: Low Drift Cell Design, no grease or PTFE sleeves required Measuring Range: Possible 1µg –...

  • Page 40: Parts List

    Megger KF-LAB Mk II Chapter 10 Parts List Part No: 6111-774 All the following parts are included as standard, but can also be purchased as single items. Results Manager Software Package Comprises of: Software Disc Interface Cable 512MB USB Flash Drive Memory Stick...

  • Page 41: Troubleshooting

    Incorrect Titrator software. The serial port functionality is fully implemented in version 2.6a and above of Titrator software and previous versions may not work reliably or establish a connection at all. Contact Megger or your local agent in order to obtain an upgrade to your Titrator software.

  • Page 42: Conformity And Warranty

    BS EN 61326-1:2013 Electrical equipment for measurement, control and laboratory use. EMC requirements. General requirements. 12.2 Quality Control The Megger KF-LAB is adequately and professionally Quality Controlled to ensure that it is fully functional and to ensure that it meets all of the requirements that the instrument supports.

  • Page 43: Warranty

    3. Ensure the returns label is attached, or that the RA number is clearly marked on the outside of the package and on any correspondence, before sending the instrument, freight paid, to Megger. Copies of the original purchase invoice and packing note should be sent simultaneously by airmail to expedite clearance through customs. In the case of instruments requiring repair outside the warranty period, an immediate quotation can be provided when obtaining the RA number.
  • Page 44 Megger KF-LAB Mk II...

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