Milkotester MASTER Touch Manuel utilisateur

Milkotester Ltd.

49, Hristo Botev St., 4470 Belovo, BULGARIA, Phone: +359 889 259 646

MILKOTESTER

Milk analyzing device

Model: MASTER Touch

Fat, Solids-Non-Fat (SNF), Protein, Lactose, Water content, Temperature

(°C), Freezing point, Salts, Density, pH

THE INFORMATION CONTAINED IN THIS MANUAL IS A SUBJECT TO CHANGE

WITHOUT NOTICE. FOR UPDATES, PLEASE CONTACT THE MANUFACTURER

OR USE THE FOLLOWING WEB ADDRESS:

http://www.milkotester.com

ULTRASONIC PORTABLE MILK ANALYZER www.milkotester.com

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Operating Instructions Master Pro

Safety recommendations :

•Read carefully and make sure you understand all the

instructions.

•After initially turning on the device do recommend 3-4

cycles of "Clean"

•Place the device on a leveled and stable surface. If it falls

or is severely shocked its functional systems may be

damaged.

•When plugging the device into the electrical outlet, put away

the power cord so it does not stay in the way when

accessing the device and cannot be stepped on.

•Do not disassemble the device in order to avoid possible

electrical shock. In case of malfunction contact your local

dealer.

•Handle the liquids the device works with carefully, following

all the instructions for their preparation.

CAUTION!

This device operates on 100-250V. In order to avoid electrical

shock or to prevent the unit from damage DO NOT REMOVE the

cover!

Please follow the instructions in this manual !

ULTRASONIC PORTABLE MILK ANALYZER www.milkotester.com

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Operating Instructions Master Pro

Table of contents

1. General description....................................................................... 4

2. Close-up view ............................................................................... 5

3.1 Front panel......................................................................... 5

3.2 Display............................................................................... 6

3.3 Rear panel......................................................................... 7

3. Samples preparation..................................................................... 8

4. Working description ...................................................................... 10

4.1 Preparing the device.......................................................... 10

4.2 Measuring samples............................................................ 11

4.3 Making corrections and calibration..................................... 13

4.3.1 Correction.............................................................. 14

4.3.2 Calibration.............................................................. 16

4.4 Settings and options.......................................................... 19

4.5 Measurement of pH........................................................... 22

4.6 Measurement of Conductivity............................................. 25

4.7 Automatic weighting the milk with scales ........................... 26

4.7.1 Control options when working with scales....................... 26

4.7.2 Preparation for work and checking the scales................. 26

4.7.3 Weighting delivered milk................................................. 27

5. Cleaning and maintenance ........................................................... 28

5.1 Routine cleaning................................................................ 28

5.2 Complete flushing.............................................................. 29

5.3 Weekly cleaning................................................................. 29

5.4 Peristaltic pump service..................................................... 29

6. Troubleshooting............................................................................ 30

7. Technical specifications................................................................ 31

Appendix Freezing point determination............................................. 33

Appendix Conductivity measuring .................................................... 36

Connecting to printer......................................................................... 37

PC connection .................................................................................. 38

Guarantee card................................................................................. 41

Accumulator………………………………………………………….........43

ULTRASONIC PORTABLE MILK ANALYZER www.milkotester.com

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Operating Instructions Master Pro

MILKOTESTER MASTER is designed for percentage analysis of Fat,

Solids-Non-Fat (SNF), Protein, and Lactose, Water content,

Temperature (°C), Freezing point, Salts, Density an d pH. Тhose

components can all be measured at the same time. The device

measures cow milk, goat milk, sheep milk, buffalo milk, camel milk,

lama milk, restored milk, UHT, cream, whey and buttermilk.

The factory preset is for cow milk, sheep milk and UHT. Upon user’s

request the device can be calibrated for any of the above mentioned

types of milk.

The device has a compact design with a robust structure and a user-

friendly interface. Most importantly, the one-button operation is

extremely simple – you press only once to start measuring, you press

only once for cleaning. MILKOTESTER MASTER can analyze three

types of milk defined by user. The measurement speed is 50 samples

per hour with cleaning included. The samples are precisely dosed and

small quantities are required – the sample volume is 25 cm³. No

thermal or mechanical treatment of the samples before analysis is

necessary. No use of chemical reagents is required. The working

conditions are as follows – temperatures from 5° to 35 °C, HR from

30% to 80%.

With regard to the “moisture problem” which remains of much

significance the front panel of the device is designed to operate when

with wet hands. In addition to this MILKOTESTER MASTER provides a

one year’s full warranty.

General description

CHAPTER ONE

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Operating Instructions Master Pro

2.1 Front panel

1 – Intake pipette

Close-up view

IN THIS CHAPTER

Front panel

Display

Rear panel

CHAPTER TWO

ULTRASONIC PORTABLE MILK ANALYZER www.milkotester.com

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Operating Instructions Master Pro

Close-up view

2.2 Display

TABLE

SHEEP MILK

CAL2

COW MILK

CAL1

UHT MILK

CAL3

CLEAN

Ph MEASURE

ULTRASONIC PORTABLE MILK ANALYZER www.milkotester.com

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Operating Instructions Master Pro

2.3 Rear panel

1 – Serial port to printer 5 – pH connector (active only on

request)

2 – USB (PC connection)

3 – Power in socket 12V DC (14-

15V DC for model with

Accumulator)

6 – USB Flash Drive

(active only on request)

4 – Power switch

ULTRASONIC PORTABLE MILK ANALYZER www.milkotester.com

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Operating Instructions Master Pro

In order that most accurate results are obtained it is important that the

milk be kept for 2 hours after milking and stirred well before being used

for sample material. A good way to stir up the milk is to pour it several

times out of one vessel into another and back. Before analysis the

samples have to be filtered in order to be free from foreign fragments.

Milk samples should be 5-35 °C. Full cream samples containing fat

over 10% should be heated up to 42-43 °C and then cooled to 25-30

°C. If the sample temperature is over 36 °C the mes sage “Sample

overheated” will appear on the display. Use milk samples only once

and do not return it to the vessel. Samples can be kept for a maximum

of 2 days if they are stored at a temperature not exceeding 5 °С.

Milk stirring

It is a very important condition for receiving exact results. Before

taking samples from big vessels, the milk (fresh or thermally treated,

whole-milk or whipped) has to be well stirred for no less than 5 min., by

vertical and circular slow movements. Mixing spoon with long handle is

used, allowing the lowest layers of the liquid to be reached. The milk in

the milk-cans is stirred 5 to 8 times from the surface to the bottom and

reverse with slow circular movements.

Sample preservation

The vessels where the samples will be put have to be clean, dry,

glass, metal or from other suitable material, to be tightly closed with

rubber or other stopples. The stopples not to absorb water and fat and

not to influence the analyses sample content.

Samples preparation

CHAPTER THREE

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Operating Instructions Master Pro

In summer the sample fills up to the top the vessel, but in winter

– at least 3/4 from the vessel’s volume. Each sample for analyses has

to be labeled and described in a way not allowing to be mixed up.

The samples are stored in conditions, assuring temperature,

corresponding to the requirements for storing such kind of product

(advisable – 1 °С).

If there is a need of longer sample storing they have to be

preserved; the most commonly used preservative is potassium

dichromate (K2Cr2O7) - 1 g for 1 000 ml. The samples have to be

stored in a cold and dark place after the preservation. Have in mind

that during the analyses the results for SNF% will be increased with

0,1 %. After adding the preservative the sample has to be well stirred.

Preparing the samples for analyses

Milk – raw and thermally treated

When examining samples taken immediately before analyses

and shortly stored, the milk is poured several times from vessel to

vessel in order to distribute the fat content uniformly. To avoid foam

formation or separation of milk fat, the samples have to be carefully

poured using the walls of the vessels, as they are tilted slightly. For a

better mixing the sample it has to be poured at least 3 times. When

needed the same is tempered to the temperature within the measuring

range.

If there is fat stuck on the walls of the vessel and the stopple

(when the samples were stored for a long time), the milk has to be

slowly heated up to 35-40 °С. At the same time it has to be slowly

shaken. The cream, stuck to the walls of the vessel is removed. The

sample is poured several times and is cooled down (advisable up to

20°С).

If there is separated liquefied fat or white particles with irregular form

on the vessel’s walls reliable results could not be expected.

Do not make analyses if the acidity of the milk is more than 17oT.

ULTRASONIC PORTABLE MILK ANALYZER www.milkotester.com

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Operating Instructions Master Pro

4.1 PREPARING THE DEVICE

1. Place the device on a horizontal and stable surface.

Caution: Any sources of hot or cold air can influence the

accuracy of the measurements.

2. Connect the power cord 12V DC to the power socket on the

rear panel of the unit and plug it into the electrical outlet (the

outlet has to be grounded, see “Important Safety

Instructions”).

3. Turn on the POWER switch and MILKOTESTER MASTER will

be ready for use. Before proceeding with using the unit,

please read and follow the rest of the instructions in this

chapter!

Powering by an external 12V DC power source

Milk analyzer MASTER can be used in places where no regular

electrical supply is available MILKOTESTER MASTER can be

Milk analyzer MASTER has provided a cable suitable for this purpose.

To use this option, follow the procedure described below:

IN THIS CHA

PTER

Preparing the device

Measuring samples

Corrections

Calibration

Working description

CHAPTER FOUR

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