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Milkotronic LACTOSCAN SA Operation Manual

Milk analyzer lcd display – 4 lines x 16 characters, ultrasonic milk analyser
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Ultrasonic milk analyser
Milkotronic Ltd
LACTOSCAN SA
MILK ANALYZER
LCD display – 4 lines x 16 characters
Operation manual
Operation manual
11.04.19
1/110

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Do you have a question about the LACTOSCAN SA and is the answer not in the manual?

Questions and answers

Edgar E. Sanga
May 26, 2025

We have Lactoscan SA; the milk temperature measured is not correct.What could be the reason and how to correct?

0
1 comments:
Mr. Anderson
May 26, 2025

Incorrect milk temperature readings on the Milkotronic Lactoscan SA can be caused by an overheated analyzer. This may happen if the device is placed in direct sunlight or near heating devices. To correct it, switch off the analyzer, wait 5–10 minutes for it to cool down or for the ambient temperature to normalize, and then switch it on again. Also, ensure the milk sample is prepared properly and contains no air bubbles.

This answer is automatically generated

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Summary of Contents for Milkotronic LACTOSCAN SA

  • Page 1 Ultrasonic milk analyser Milkotronic Ltd LACTOSCAN SA MILK ANALYZER LCD display – 4 lines x 16 characters Operation manual Operation manual 11.04.19 1/110...
  • Page 2 Due to continuous improvement in the device, information contained in this manual is subject to change without notice. Contact the company-producer for revisions and corrections 4, Narodni Buditeli Str. 8900 Nova Zagora BULGARIA Phone/Fax: + 359 457 67082 e-mail: office@lactoscan.com www.lactoscan.com www.milkotronic.com Operation manual 11.04.19 2/110...
  • Page 3 Ultrasonic milk analyser SAFETY INSTRUCTIONS 1. Read this manual carefully and make sure that you understand all the instructions. 2. For safety purposes the device is equipped with grounded power cable. If there is no grounded electrical outlet where the device will be used, please, install such before using the device.
  • Page 4 Ultrasonic milk analyser PARTS AND ACCESSORIES In the table below the standard delivery configuration of the milk analyzer is listed: № Item № Description Ultrasonic portable milk analyzer LSSA001 50 sec 1 sample measurement time 30 sec LSSA00 Operation manual LSSA003 Plastic sample holder LSSA004...
  • Page 5 Ultrasonic milk analyser 18. 12 V Serial Printer Power Supply Cable LSSA018 19. RS232 Interface Cable - Milk Analyser – LSSA019 Serial Printer 20. Carrying case LSSA020 21. Plug type Spare O-ring for the pH probe USB flash drive (slot) Operation manual 11.04.19 5/110...

  • Page 6: Function

    Ultrasonic milk analyser 1. FUNCTION The function of the milk analyzer is to make quick analysis of milk on fat (FAT), non-fat solids (SNF), proteins, lactose and water content С), pH, freezing point, salts, total solids, percentages, temperature ( conductivity as well as density of one and the same sample directly after milking, at collecting and during processing.

  • Page 7: Technical Parameters

    Ultrasonic milk analyser 2. TECHNICAL PARAMETERS 2.1. Working modes characteristics: The program of the milk analyzer has four working modes. 2.1.1. Measurement mode milk / dairy product – first type 2.1.2. Measurement mode milk / dairy product – second type 2.1.3.

  • Page 8: Measuring Range

    Ultrasonic milk analyser 2.2. Measuring range: Fat ………………..... …………..from 0.01% to 25% (45%*) SNF ……………………………… ...…………………..from 3% to 40% Density ** ………………………. ……...…….from 1000 to 1150 kg/m Proteins …………………………. ………………………..from 2% to 7% Lactose ………………………... …………………from 0.01 % to 20 % Water content …………………...

  • Page 9: Correct Ambient Conditions

    Ultrasonic milk analyser PH……………………………………. ………………………………±0.05 Conductivity..………………………. ……………………………...±0.05 Total solids …………………………. ……………………………± 0.17% 2.4 Correct ambient conditions: Accuracy is guaranteed in case of normal ambient conditions: Air temperature………………………… ….…from 10 C to 40 C (43 Relative humidity ……………………… ……………...from 30% to 80% Power supply …………………………...
  • Page 10 Ultrasonic milk analyser Fig.1 Front panel 1. pH probe(option) 10. Sample holder 2. printer (option) 11 Input pipe 3. keypad (option) 12. Hanger 4. Display 13. USB flash drive (slot) 5-9. Buttons Operation manual 11.04.19 10/110...
  • Page 11 Ultrasonic milk analyser fig. 2 Back panel 1. keypad (option) 8. Serial printer interface/RS232 2. Printer (option) 9. Waste solution output pipe orifice 3. pH-probe (option) 10. Cleaning solution input pipe orifice 4. Weigh Scale input (option) 11. Switching adapter 5.
  • Page 12 Ultrasonic milk analyser Fig 3 Principle working scheme Operation manual 11.04.19 12/110...
  • Page 13 Ultrasonic milk analyser Fig. 4 Connecting peripheral devices Operation manual 11.04.19 13/110...
  • Page 14 Ultrasonic milk analyser Fig. 5 Cables description 90-1801-0008 RS232 Interface Cable - Milk Analyser – Serial Printer/ IBM PC The connection of the analyser with other devices via RS232 Interface is made through the coupling DB9 on the back panel of the device. In it can be plugged only the cable, supplied by the producer with the analyser (or produced by the customer as per above scheme).
  • Page 15 Ultrasonic milk analyser intended for connecting computers from laptop type, which have no RS 232 interface (COM Ports – DB9 Connector). This option may be available together with the standard RS232 – connector DB9, which always exists in the analyzers. At one and the same time, connection analyzer – computer, can be established only through one of the couplings –...

  • Page 16: Qualification Of Raw Milk, Thermally Treated Milk, Other Dairy Products And Derivatives

    Ultrasonic milk analyser 3. QUALIFICATION OF RAW MILK, THERMALLY TREATED MILK, OTHER DAIRY PRODUCTS AND DERIVATIVES 3.1. Taking samples and preparation for analysis In order to receive reliable results in qualification of milk, dairy products and derivatives are needed: precise samples taking; correct samples storing (in need to be preserved);...

  • Page 17: Making Analysis

    Ultrasonic milk analyser If in the process of exploitation there is a need to ask a question the company-producer, you have to send the data, written on the display during the above described initialization procedure. 3.2.1.4.Till the analyzer is prepared for work (at about 5 minutes) the following message is written on the display: “Getting ready”.

  • Page 18: Displaying The Results

    Ultrasonic milk analyser The analyzer sucks the milk, makes the measurement and returns the milk in the waste liquid reservoir. During the measurement the temperature of the sample is shown on the display. Ignore the results received immediately after switching on the analyzer and after measuring distilled water.
  • Page 19 Ultrasonic milk analyser By pressing the button”Up” ▲ display shows the third page with results: Page 3 Results: L=l.ll Where: L= ll.ll - measured Lactose in %; By pressing the buttons “up”▲ and ”down”▼, the operator has the possibility to pass from one page result to another. If the device has an embedded option “Conductivity”...
  • Page 20 Ultrasonic milk analyser Fig. 6 Printing the results For more information for the printer see 8.2. Working with Printer. SCHEME: PRINTOUT OF THE RESULTS-EXAMPLE Time: xx:xx:xx Date: xx:xx:xxxx Milk analyser 60 SN: xxxxx Calibration 1 – UHT Results: Temp.Sample………………..˚C Fat………………………..xx.xx% SNF………………………xx.xx% Density…………………….xx.xx Protein…………………...xx.xx%...

  • Page 21: Cleaning The Analyzer

    Ultrasonic milk analyser 4. CLEANING THE ANALYZER This procedure prevents gathering milk fat residues and milk stone on the sensor. The milk stone consists of milk solids, calcium, iron, sulphates, magnesium, etc. All these substances form layer on the pipe and sensor’s walls, which leads to deviations in the measurement results and blocking up the piping.
  • Page 22 Ultrasonic milk analyser The reservoir with the cleaning solution have to be connected towards the analyser and outgoing pipe towards reservoir for collecting the measured samples and used cleaning solution, as is shown on the scheme: Fig.8 Connecting the reservoirs towards the milk analyzer Pay attention to the pipes in both reservoirs.

  • Page 23: Current Cleaning

    Ultrasonic milk analyser 4.1.1. Current cleaning. 4.1.1.1. Automatic start The current cleaning is made with 3% alkaline solution (for working solution preparation see 4.2.1.), with which the reservoir for the cleaning solution is filled in. It is automatically started, without operator's interference after the set time intevals elapse 55 min.
  • Page 24 Ultrasonic milk analyser Cleaning Please wait If there is a glass with sample it is completely emptied and then the analyser automatically fulfills procedure for sucking the cleaning solution and c rinsing the analyzer's inner system. In order the input metal pipe to be cleaned out for a short time a cleaning solution is pumped out for a short time in the already empty glass.

  • Page 25: End (Final) Cleaning

    Ultrasonic milk analyser By choosing Cleaning the current cleaning is started. The display shows the following: Auto clean started! Put empty glass In this way the current cleaning is started. The procedure and operator’s actions are described above. Do not switch off the device at the end of the working day before the automatic cleaning procedure is completed.
  • Page 26 Ultrasonic milk analyser It is started using the working modes menu. After the measurement is completed, by pressing and holding pressed the button Enter, the display shows the possible working modes of the analyser. Sheep Cleaning Final Clean 1. Choose Final Clean. After choosing the final cleaning, the following message appears on the display: Put filled with Water glass...
  • Page 27 Ultrasonic milk analyser Glass Alcal Detrg Waste pipe  Glass press Enter 5. Place glass filled with alkaline cleaning solution. 6. The pipe, coming from the orifice with inscription Waste Pipe has to be placed in the glass. Fig 9. Cleaning 7.
  • Page 28 Ultrasonic milk analyser Where, X is changing number showing number of cycles done by the pump. 8. After the cleaning procedure is finished, the following message appears, reminding the analyzer needs rinsing. 9. Rinsing procedure is executed, described in p. 2. After it is finished, the display shows: Glass Acid Detrg Waste pipe ...
  • Page 29 Ultrasonic milk analyser Cleaning Please wait Follow repeatedly sucking/pouring out the cleaning solution and heating it up. After the cleaning is finished, the cleaning solution is emitted in the reservoir with the waste liquids. For maximum cleaning effect it is recommended the cleaning solution to be preliminary heated up to 40-50 degrees centigrade.

  • Page 30: Preparation Of Cleaning Solution

    Ultrasonic milk analyser 4.2. Preparation of cleaning solution For a single cleaning cycle you need only 25 ml cleaning solution. We recommend you to prepare working solutions of cleaning chemicals, enough for normal work for 1 week, because, during their stay unused, the working solutions loose their strength and also is difficult to store them.
  • Page 31 Ultrasonic milk analyser 2. Cleaning with acidic solution Fill in the glass with warm (50-60 С) acidic cleaning solution. Put it in the recess of the analyser and start the command Cleaning from the main menu. After finishing it, pour out the contaminated liquid. 3.

  • Page 32: Working With The Peristaltic Pumps

    Ultrasonic milk analyser 4.3. Working with the peristaltic pumps There are two peristaltic pumps in the analyser – 1 for the sample and 1 for the cleaning. Fig.11 Peristaltic pumps Operation manual 11.04.19 32/110...
  • Page 33 Ultrasonic milk analyser Fig. 12 Peristaltic pump SL 16 Operation manual 11.04.19 33/110...

  • Page 34: Possible Malfunctions And Error Messages, Troubleshooting

    Ultrasonic milk analyser POSSIBLE MALFUNCTIONS AND ERROR MESSAGES, TROUBLESHOOTING In the table below are described the possible malfunctions during the milk analyzer’s exploitation and ways for their repair/remedy. If the problem persists after all recommended measures are taken, please, connect the nearest service center.

  • Page 35: Making Corrections And Recallibration Of The Device

    Ultrasonic milk analyser 6. MAKING CORRECTIONS AND RECALLIBRATION OF THE DEVICE In the process of work with the analyser there is a possibility the results to start differing between the data for some of the measuring parameters when measured with the milk analyzer and the corresponding reference method of analysis (Gerber for fat, Kjeldhal for proteins etc).

  • Page 36: Making Corrections

    Ultrasonic milk analyser For example М% of the reference samples: 2,20 3,00 3,80 4,60 5,20 М%average when measuring with the analyser: 2,38 3,17 4,01 4,79 5,42 Difference: 0,18 0,17 0,21 0,19 0,22 Conclusion: the difference is relatively constant value and correction is possible to be done with –...

  • Page 37: Preparing The Analyzer For Mode Corrections

    Ultrasonic milk analyser 6.3.2. Preparing the analyzer for mode Corrections 6.3.2.1. Press the button Enter and without releasing it switch on the power supply of the device, wait for the starting identification messages and release the button after the following message appears on the display: Release button to start setup After releasing the button on the display is shown:...
  • Page 38 Ultrasonic milk analyser Position on Measurement and press Enter. By using buttons “up”▲ and ”down”▼position on the corresponding calibration (for example Correction 1 – cow) and press Enter. 6.3.3.2. Choosing correction parameter After choosing calibration mode the display shows the following: Cal1 Cow Param:Fat Correct=00.00...

  • Page 39: Recalibrating The Milk Analyser

    Ultrasonic milk analyser your requirements you may make the calibration using a personal computer type IBM PC and the company's calibration program or autonomous - by recalibration. When making corrections or calibrations be 100% sure in the accuracy of the reference methods result.
  • Page 40 Ultrasonic milk analyser 6.4.2. Making recalibration 6.4.2.1. Choosing the calibration mode After starting Recalibrate, the display shows the following: Cal: 1 Cow Prev Next You can choose the type of milk to be calibrated. By pressing ▼ (Next ) you can switch between Cal: 1, Cal: 2 or Cal: 3.
  • Page 41 Ultrasonic milk analyser With the button ▲(Next), choose SNF and in the same as above described procedure, enter the value for SNF. After it is finished, press “Enter” (OK) and you are going back to the previous menu. With button ▲...
  • Page 42 Ultrasonic milk analyser In other case the calibration will not be correct. 6.4.2.3. Making recalibration with the available samples After entering the values for the separate parameters of the sample, pressing Enter (OK) will display the following menu: Cal: Cow Put sample High 5 times which reminds us to put 5 times the sample with high FAT.

  • Page 43: Checking The Calibration

    Ultrasonic milk analyser After 5th measurement completion automatically appears the menu, which reminds us to place the Low fat milk sample: Cal: Cow Put Sampl: Low 5 times Stir 2-3 times the milk sample before each measurement by pouring it from one vessel to another.
  • Page 44 Ultrasonic milk analyser 2. Make sure it shows the same serial number as this already calibrated. For checking, use the third sample with medium FAT content. 3. Measure the milk 5 times in the mode you’ve calibrated it. In case that the device is not connected towards printer write down the results.

  • Page 45: Starting The Device In A Service Test/Setup Operational Mode. Menus Designation

    Ultrasonic milk analyser 7. STARTING THE DEVICE IN A SERVICE TEST/SETUP OPERATIONAL MODE. MENUS DESIGNATION 7.1. Starting the device in a service Test/Setup operational mode. In order to start the Setup of the device the operator has to press the button Enter and without releasing it to switch on the power supply of the device, to wait for the starting identification messages and to release the button after the following message appears on the display:...

  • Page 46: Corrections

    Ultrasonic milk analyser Serve for choosing special (technological) working modes. After starting it the following appears on the display: Special modes Calibration Cycle Fast cycle Exit This mode is normally used in production conditions. 7.2.1.2. Calibration mode In mode Calibration the analyzer is ready to make measurement and to send the received results towards the technological milk analyzers calibration system.
  • Page 47 Ultrasonic milk analyser Net number By using the button “up”▲ the operator has the possibility to increase the number, showing the channel’s number, and by button “down”▼, to decrease it. Pressing the button Enter saves the chosen channel and exits the function. When connected in the production network each device has to have a unique number.
  • Page 48 Ultrasonic milk analyser The current calibration is replaced with the calibration from the internal buffer and the analyzer starts working with it. The content of the internal buffer is not changed. If after recalibration “Save calibration” is pressed the new calibration settings will be saved over the factory settings.
  • Page 49 Ultrasonic milk analyser No OK Yes 7.2.3.4.2. Select High Fat If the analyzer has embedded function for measurement of high fat products, by this menu the calibration, with which this measurement to be made is chosen. What is seen when this option is turned on is an obvious slowdown of the sample’s suction speed.
  • Page 50 Ultrasonic milk analyser There are the following possibilities: With button Exit – to leave the menu. With button Yes – to confirm the chosen for editing calibration name. With button Next – to choose the next calibration name for editing. If a calibration for change or edit of name is chosen, the display shows (example): Cal:Sheep...
  • Page 51 Ultrasonic milk analyser With button Set – to confirm the ASCII symbol, shown on the display and passes to editing the next symbol from the calibration name. With button Next – to show the next ASCII symbol. After editing the last (eighth) name symbol, the display shows: Cal1: Sheep User Edited Name:MilkShp...
  • Page 52 Ultrasonic milk analyser By pressing the buttons: “up”▲ - you may increase the absolute value of the freezing point; ”down”▼ - you may decrease the absolute value of the freezing point; “Enter” - saves the edited value and exits the menu; 7.2.4.

  • Page 53: Exit

    Ultrasonic milk analyser 7.2.6. Exit By pressing the button you may leave the program and pass towards another menu. 7.2.7. Setup menu structure Analyzer Setup Special modes Calibration Cycle Reports Shut Down Corrections Calibration 1 Density Lactose Salts Proteins Water Calibration 2 Density Lactose...
  • Page 54 Ultrasonic milk analyser Calibration 1 Calibration 2 Calibration 3 Edit samp's 1 Edit samp's 2 Edit samp's 3 Edit FrPoints FrPoint Calibr1 FrPoint Calibr2 FrPoint Calibr3 Save/Rest Save Calibr 1 Save Calibr 2 Save Calibr 3 Rest Calibr 1 Rest Calibr 2 Rest Calibr 3 Fan Temp Offs...
  • Page 55 Ultrasonic milk analyser KeyPad Displays Parallel Prn pH & Co Meter Calibration Measuring En/Disable pH U Display pH Test U[V] Co Meter Calibr Co Meter Test Co Meter En/Dis Accessories Weight scale Raw Test Calibration Measure On Line En/Dis Battery Measure Bat U Ctrl Enabl/Dis RT Clock...

  • Page 56: Entering Data With The Keypad And Printing Out The Results

    Ultrasonic milk analyser 8. ENTERING DATA WITH THE KEYPAD AND PRINTING OUT THE RESULTS 8.1. Working with the keypad To make the operation easier there is embedded keypad in the device. Via it one may enter 4 digit number of the milk supplier (from 1 up to 9999) and the delivered by this milk supplier liters of milk (from 0.1 up to 9999.9 liters) with accuracy up to 0.1 l.

  • Page 57: Working With The Printer

    Ultrasonic milk analyser yyyy.y - entered by the operator liters The operator has the following two possibilities: 1. To cancel the entered data by pressing the button 0 on the keyboard and to start entering them again. 2. To confirm the entered data by pressing the button # (Enter) on the keyboard, and then the display will show currently chosen calibration.
  • Page 58 Ultrasonic milk analyser paper item thermal paper paper width 58mm Paper papaer thickness 65±5um diameter of paper roll 30mm 0～55℃；-20～55℃ Environment adaptability 10～90%RH Physics –25～70℃ Storage temperature Specification 10～90%RH Dimension (WⅹHⅹD 103mm×57mm×57mm Fig. 12 Printer control panel 1. Printout 2. Paper roll compartment 3.

  • Page 59: Sequence Of Actions When Printing

    Ultrasonic milk analyser 1. Press the button as it is shown on the figure. 2. Position the paper roll making sure it unrolls in the proper direction. 3. Tear off the paper and close the cover. 8.2.2. Sequence of actions when printing The embedded printer is automatically switched on with switching on the device.

  • Page 60: Additional Possibilities Of The Analyser

    Ultrasonic milk analyser 9. ADDITIONAL POSSIBILITIES OF THE ANALYSER 9.1. Connecting to 12 V DC power supply. If there is a need the analyser to work on place without electrical supply available, then it could be powered by car battery or other 12 V DC external power supply.

  • Page 61: Working With Embedded Accumulator (Option)

    Ultrasonic milk analyser What the operator sees during these passes is the difference in the speed of sucking the sample. For that purpose, the high-fat sample has to be preliminary heated up to 30С +- 3С. To choose the mode, follow the sequence below: Setup->Settings->Settings Page2->Option Select->SelPumpSpeed->Speed for Cal x...
  • Page 62 Ultrasonic milk analyser After pressing and holding pressed the button Enter (when choosing calibration), the following is displayed: Milk selector Cal1 – Cow Cal2 – Sheep Cal3 – UHT ----------------------------- Cleaning Final clean Shut Down By choosing the option Shut Down the operator may switch off the power supply of the analysers.

  • Page 63: Automatic Weighting The Milk With Scales (Option)

    Ultrasonic milk analyser 9.7. Automatic weighting the milk with scales (option). Scales could be connected towards the milk analyser, which to be used for weighting the delivered milk before measuring its parameters. For using the scale the operator has to follow up the two procedures: - Preparation for work and checking the scales - Weighting delivered milk 9.7.1.
  • Page 64 Ultrasonic milk analyser yy.yyy – tarе’s weight (weight of the milk collecting vessel plus milk, collected from the previous deliverers, if there is such in the vessel) zz.zzz – sum of Net + Tare After the first measurement, across Net will be shown the weight of the milk collecting vessel, and Tare will show 0.

  • Page 65: Control Options When Working With Scales

    Ultrasonic milk analyser The operator has to place the sample holder filled with milk sample in the milk analyser and to start the measurement. The milk analyser measures the sample and shows the results as in a normal mode. On the print out 2 new lines appear: Litres………..19.4 Kilograms…..20.00...

  • Page 66: Working With Embedded Report System For Generating And Making Reports - Report System (Option)

    Ultrasonic milk analyser where: хххх.х – calibrating data from the scales. The operator waits for the value to be shown and presses the button below the word Set. The same procedure is repeated with the heavy standard weight, for. example 50.000 kg. After the value is shown and pressing the button Set, a message for completed calibration is displayed.

  • Page 67: Basic Terms

    Ultrasonic milk analyser Lines On Page Empty Lines Bot Delay New Line Delay Pr Header Print Deliv N Generator Fat&SNF Rate Set Coeffs Rep for Calibr Short Report Large Report All Large Rep Shift Selector Print Page Num Tools Send Rec to PC 9.8.2.

  • Page 68: Menus' Description

    Ultrasonic milk analyser Calculations are made for each separate calibration. Average results for Fat and SNF may be used for control of total gathered milk. In order to start working the report system needs the operator to enable it (Report En/Dis), and to set the old report in initial adjustment (New Report). Using IBM PC (via RS232 cable) user can enter the name of Milk collection center and names of 2 working shifts (i.e.

  • Page 69: Report Options

    Ultrasonic milk analyser New Report – deletes the old archive. In this way the number of free records for making archives of the results remains 1000. Start New Rept The operator has to be very careful with this command, because, by choosing Yes the whole archive from previously made measurements will be deleted and the memory will be set to zero, free for new measurements to be stored.
  • Page 70 Ultrasonic milk analyser Sel Out Device – chooses the outgoing device for Large Shift Report – it could be parallel printer (printed copy) or IBM PC (file). Select Output For Report: IBM PC IBM PC Lines On Page – determines the number of lines in one page for Large Report.
  • Page 71 Ultrasonic milk analyser The normal values of these parameters are 0. When using old model printers (without input memory buffer), it is necessary time delay to be set, for example 400, in order to be possible speed of the device and printer to be harmonized.
  • Page 72 Ultrasonic milk analyser Short Report – prints out on the serial printer report for the archive, calculated using the formulas (3) and (4), for each calibration, separately. Only the final, summarized results are printed out, without details about each sample. It is used when quick processing of measurements is needed for receiving summarized results.
  • Page 73 Ultrasonic milk analyser column SNF% measured SNF in percentage column Rate calculated Rate (according formula 1) column Amount calculated Amount (according formula 2) Total Litres sum of liters delivered. Liters are received by weighted kilos, using the formula: Litres = Kilograms / Density where Density is measured sample’s density Total Amount...

  • Page 74: Embedded Real Time Clock (Option)

    Ultrasonic milk analyser Send recs to PC Exit 9.9. Embedded real time clock (option). On customer’s request, a real time clock could be embedded in the device, showing astronomical time and date. The clock is powered by battery, so it is independent on power supply of the device.

  • Page 75: Usb Flash-Drive (Pen Drive) (Option)

    Ultrasonic milk analyser hh:mm:ss dd:mm:yy Exit where: - the current hour mm - current minutes - current seconds - current day mm - current month - current year 9.10. USB Flash-drive (pen drive) (option). This option allows connecting standard USB Flash Drive (Pen Drive) towards the Lactoscan.
  • Page 76 Ultrasonic milk analyser It is recommended this option to be used in combination with RTC and Keypad. Availability of clock option ensures archive of the time when the measurement was taken. Clock adjustment can be made with the software tool LS-AdjustRTClock.exe (see its manual). In presence of Keypad, the deliverer’s number can be entered (or some kind of number/identifier of the sample) –...
  • Page 77 Ultrasonic milk analyser place the Flash-Drive in the USB coupling when needed and remove it when it is not needed – that’s the total training an operator needs. Having in mind above described mobility of this option, there are different scenarios for using it, depending on the specific conditions.

  • Page 78: Appendices

    Ultrasonic milk analyser APPENDICES APPENDIX PREPARATION SAMPLES MILKANALYSERS’ CALIBRATION For calibration are needed samples of cow milk with the following parameters: Low Fat High Fat Middle 1 Cow 2,2% 5,2% 3,6% For the calibration are needed: 1. Distilled water 2. Min. 3 milk samples with known values for fat, SNF, protein, density, lactose, salts.
  • Page 79 Ultrasonic milk analyser 2-2,3% FAT; 8.7-9% SNF; 3,3-3,5 % Protein; 4,8-4,9% Lactose; 0,75 Salts; 1030-1033 kg/m3 Density. The second cow milk sample with high fat content to be with the following parameters: 5-5,3% FAT; 8.4-8,79% SNF; 3,1-3,2% Protein; 4,6-4,7% Lactose; 0,7 Salts; 1028-1029 kg/m3 Density.

  • Page 80: Determination Some Of The Parameters By Formulas

    Ultrasonic milk analyser 1. Determination some of the parameters by formulas There is dependence between the different parameters in milk and its density, which may be expressed with mathematical equation. On this base different formula, tested and confirmed by the classical laboratory methods for analysis, are developed.

  • Page 81: Determination Of Salts Content

    Ultrasonic milk analyser Where –solids-non-fat content in percentages (%), 0,45 – constant coefficient. This is an actual coefficient for sheep breeds on the territory of the Balkan Peninsula. 4. Determination of salts content We recommend using the following formulas: А/ for cow milk Salts = SNF* 0,083 (% ) Where –...
  • Page 82 Ultrasonic milk analyser Where – solids-non-fat content in percentages (%), 0,475 - constant coefficient. This is an actual coefficient for sheep breeds on the territory of the Balkan Peninsula. Operation manual 11.04.19 82/110...

  • Page 83: Appendix 2 Freezing Point Determination

    Ultrasonic milk analyser APPENDIX 2 FREEZING POINT DETERMINATION 1. Methods for determination. The milk analyzer determines the freezing point of each sample and the quantity of added water. The milk analyser does not measure the freezing point, but calculates it from the components it depends on. The basic components in the milk are water, salts, lactose, FAT, proteins, minerals (salts) and acids.
  • Page 84 Ultrasonic milk analyser confidence that will show 99% of all freezing point determinations on unwatered milk: “if the freezing point is –0,525°C or below, milk may be presumed to be free of water or may be confirmed as water free by tests, specified below. If the freezing point is above –0,525°C, milk will be designated as “presumptive added water”...
  • Page 85 Ultrasonic milk analyser Second variant If you’ve entered for the device basic freezing point –0.540°C, measured freezing point –0.540°C, the milk analyzer will indicate 0%. When you add 3,8% water, the device will indicate 3,8%-added water. From the above mentioned follows that it is very important to enter correct basic freezing point in the device.

  • Page 86: Appendix 3 Ph Measuring

    Ultrasonic milk analyser APPENDIX 3 PH MEASURING 1. General information PH probe is a unit, measuring the solution acidity or alkalinity degree. It is measured on scale of 0 to 14. The term pH is derived from "p", the mathematical symbol for the negative logarithm, and "H", the chemical symbol of Hydrogen.

  • Page 87: Electrolyte Replacement (For Refillable Electrode Only)

    Ultrasonic milk analyser 2.5. Electrolyte Replacement (for refillable electrode only). The reference electrolyte needs to be refilled when the electrode has been used for a long period, or when the internal electrolyte has dried up. To accomplish this, follow the procedure described below. - Remove the protective rubber cap or sleeve;...

  • Page 88: Electrode Activation

    Ultrasonic milk analyser junction can become clogged by contamination in the solution. If a clogged junction is suspected it is best to clear the junction. Heat up the diluted KCl solution to 60-80°C. Place the sensing part of the pH electrode into the heated KCl solution for approximately 10 minutes.

  • Page 89: Buffer Solutions

    Ultrasonic milk analyser reason it is always a good idea to have a back-up electrode on hand to avoid any system down time. 3. Buffer Solutions Buffers are solutions that have constant pH values and the ability to resist changes in that pH level. They are used to calibrate pH measurement system.

  • Page 90: Ph Helpful Hints

    Ultrasonic milk analyser For Sensorex pH electrodes, originally supplied with The analyser read the following information: Temperature compensations The output of pH electrodes varies with temperature in manner, predicted by theory. When needed, Sensorex can supply electrode holders with build-in automatic temperature compensators.

  • Page 91: Preparation For P Hmeasurement

    Ultrasonic milk analyser Immerse the electrode far enough into the solution to insure the reference junction is below the surface. Allow adequate time for the electrode to stabilize in standards and samples before taking a reading. Clean the electrode periodically. Allow more time for aged electrodes. Do not use the pH electrode in solutions of fluoride ion at low pH.
  • Page 92 Ultrasonic milk analyser Fig. 13 Removing the stopper 3. Carefully place the pH probe paying attention not to remove the sealing O- ring. 4.Place the probe with the nut in the hole and tighten it. It is very important to close the nut tightly, paying attention not to allow air to enter the system.
  • Page 93 Ultrasonic milk analyser Fig. 14 Placing the probe Operation manual 11.04.19 93/110...

  • Page 94: Ph Measuring

    Ultrasonic milk analyser If you are working with the analyser regularly (each day) do not remove the probe after work.. If you ‘ll not use the analyser more than 2 days, you must take out the probe and to place the stopper back. The pH probe must be stored separately as per the instructions of point 2.3 Appendix 3.
  • Page 95 Ultrasonic milk analyser On line automatic pH measuring, when measuring the rest of the sample’s parameters. When starting work with рН meter first connect the probe/sensor, and then the power supply of the device. Having in mind the characteristics of the process of pH measuring it is necessary to dip the рН...

  • Page 96: Ph Calibration

    Ultrasonic milk analyser 8.pH Calibration. Fig. 15 Calibration buffers Take out the sensor. You may not place the nut, because the analyzer do not sucks during calibration. Serve for pH meter’s calibration. For this purpose 2 sample buffers are used, shown on the display as Low buffer (for example 3.00 pH) and High buffer (for example 7.00 pH).
  • Page 97 Ultrasonic milk analyser 3. Using the analyzer’s buttons enter the exact buffer value. For the probes which are delivered with the analyzer, the isopotential point is always 7.00. The following is displayed: pH Calibr Put Izopot buff Buf=xx.xxx 4. The operator has to enter the buffer’s value, when the probe is in its isopotential point and to press the button Enter.

  • Page 98: Ph Measuring

    Ultrasonic milk analyser pH Calibr OK Which shows that the calibration procedure was completed successfully. The calibrated device is ready for making measurements. 8. The device automatically passes in mode pH measuring. 9. Check the correctness of the calibration by measuring buffer solution 7.00. 9.

  • Page 99: Ph U Display

    Ultrasonic milk analyser 11. pH U Display Serves for allowing/forbidding the value of the pH probe voltage during pH parameter measuring. After starting it the display shows: PHUDisplay No OK Where XXX is the current state of the displaying mode. By pressing the buttons below the inscriptions it could be changed, as Yes –...

  • Page 100: Appendix 4 Conductivity Measuring

    Ultrasonic milk analyser APPENDIX 4 CONDUCTIVITY MEASURING 1. Method of determination. Conductivity (or Electrolytic Conductivity) is defined as the ability of a substance to conduct electrical current. It is the reciprocal of the resistance. In a healthy animal*, the mean value of electric conductivity is: Milk type Conductivity values Cow milk...

  • Page 101: Conductivity Measurement

    Ultrasonic milk analyser value (6,5 - 13,00 Infections damage the tissue of the udder. This mS/cm (18°C) allows sodium and chlorine ions from the blood to be released into the milk. The concentration of ions in the milk is thereby raised, and it can more easily conduct electrical...

  • Page 102: Co Meter Test

    Ultrasonic milk analyser Co meter Calibr Put new sample And press Enter ADC=xxxxx/1 Where xxxx is the result from the first calibration measurement. The operator have to put a new buffer, N.B. do not use one and the same buffer more than once! Then start the next measurement.

  • Page 103: Co Meter En/Dis

    Ultrasonic milk analyser 5. Co Meter En/Dis. Enables or disables the conductivity measurement system. The following message appears on the display: Cond Measuring 6.Corrections in conductivity measurement It is done by starting the menu Corrections -> Cond measure. You have the possibility to increase/decrease the measured conductivity value from –...
  • Page 104 Ultrasonic milk analyser 4. Empty its content in a measuring mug with 1 l volume, paying attention all its content to be emptied. 3,056 г For standard buffer: 5,02 ms – 5. Add 600-700 ml distilled water, which was preliminarily deaerated in vacuum dryer or boiled and then cooled down to 20 ˚С.

  • Page 105: Table Of Contents

    Ultrasonic milk analyser Contents: FUNCTION ................................6 2. TECHNICAL PARAMETERS ........................... 7 2.1. WORKING MODES CHARACTERISTICS: ......................7 2.1.1. M – ................7 EASUREMENT MODE MILK DAIRY PRODUCT FIRST TYPE 2.1.2. M – ................7 EASUREMENT MODE MILK DAIRY PRODUCT SECOND TYPE 2.1.3.
  • Page 106 Ultrasonic milk analyser 6.3.3. M ............................37 AKING CORRECTION 6.4. RECALIBRATING THE MILK ANALYSER ..................... 39 6.4.1. R ....................39 UNNING THE ANALYSER IN MODE ECALIBRATE ............................43 HECKING THE CALIBRATION 7. STARTING THE DEVICE IN A SERVICE TEST/SETUP OPERATIONAL MODE. MENUS DESIGNATION ................................
  • Page 107 Ultrasonic milk analyser 4. D ........................81 ETERMINATION OF SALTS CONTENT 5. D ....................... 81 ETERMINATION OF TOTAL PROTEINS CONTENT APPENDIX 2 FREEZING POINT DETERMINATION ................... 83 1. M ..........................83 ETHODS FOR DETERMINATION 2. T ............................83 HE BASIC FREEZING POINT APPENDIX 3 PH MEASURING ..........................
  • Page 108 Ultrasonic milk analyser 7. CONDUCTIVITY CALIBRATION BUFFER PREPARATION ................ 103 CONTENTS: ................................. 105 Operation manual 11.04.19 108/110...
  • Page 109 Ultrasonic milk analyser GUARANTEE CARD LACTOSCAN SA Automatic model Guarantee period is 1 (one) year after purchasing date. Improper handling, transport and storage will invalidate the guarantee. Guarantee is void if warranty labels are removed. Serial № Date of purchase:...
  • Page 110 Ultrasonic milk analyser GUARANTEE CARD Purchaser: Service report: Service Delivery Damage Signature entry date date Covers: Lactoscan SA Last edited: 29.03.2019 HEAD OFFICE: 4, Narodni Buditeli Str. 8900 Nova Zagora BULGARIA Phone/Fax: + 359 457 67082 E-mail: office@lactoscan.com www.lactoscan.com www.milkotronic.com Operation manual 11.04.19...

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