KERN & SOHN MLS 50-3C User Manual

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KERN & Sohn GmbH

Ziegelei 1

email: info@kern-sohn.com

Phone: +49-[0]7433- 9933-0

Internet: www.kern-sohn.com

Operating Manual Electronic Moisture analyzer

KERN MLS_C

Version 3.0

11/2013

D-72336 Balingen

Fax: +49-[0]7433-9933-149

MLS_C-BA-e-1330

KERN MLS_C

Electronic Moisture analyzer

Version 3.0 11/2013

Operating Manual

Table of Contents

1 TECHNICAL DATA ............................................................................................. 4

1.1 Dimensions ............................................................................................................................... 5

2 DEVICE OVERVIEW ........................................................................................... 6

2.1 Keyboard overview ................................................................................................................... 7

2.2 Display overview (during measurement) ............................................................................... 8

3 BASIC INFORMATION (GENERAL) .................................................................. 9

3.1 Proper use ................................................................................................................................. 9

3.2 Improper Use ............................................................................................................................ 9

3.3 Warranty .................................................................................................................................... 9

3.4 Monitoring of Test Resources ................................................................................................. 9

4 BASIC SAFETY PRECAUTIONS ..................................................................... 10

4.1 Pay attention to the instructions in the Operation Manual ................................................ 10

4.2 Personnel training .................................................................................................................. 10

4.3 Danger Information ................................................................................................................ 10

5 TRANSPORTATION & STORAGE ................................................................... 12

5.1 Testing upon acceptance ...................................................................................................... 12

5.2 Packaging / return transport ................................................................................................. 12

6 UNPACKING, SETUP AND COMMISSIONING ............................................... 14

6.1 Installation Site, Location of Use .......................................................................................... 14

6.2 Unpacking and assembly ...................................................................................................... 15

6.3 Scope of delivery .................................................................................................................... 16

6.4 Mains connection ................................................................................................................... 16

6.4.1 Switch on the unit ................................................................................................................. 16

6.5 Connection of peripheral devices ......................................................................................... 16

6.6 Initial Commissioning ............................................................................................................ 16

6.7 Operating the scales using PS keyboard............................................................................. 17

7 MENU ................................................................................................................ 17

7.1 Navigation in the menu: ......................................................................................................... 19

2 MLS_C-BA-e-1330

8 USER MENU ..................................................................................................... 22

8.1 P1 Calibration (adjustment) ................................................................................................... 23

8.2 P2 GLP (Good laboratory practice) ...................................................................................... 33

8.2.1 P3 Date/time ........................................................................................................................ 35

8.2.2 P4 display ............................................................................................................................. 37

8.2.3 P5 RS-232 ............................................................................................................................ 39

8.2.4 P6 output .............................................................................................................................. 40

8.2.5 P7 General functions ............................................................................................................ 46

9 OPERATOR MENU – MOISTURE ANALYSIS ................................................. 47

9.1 Moisture analysis without using the program library ......................................................... 47

9.1.1 Disabling the program library ............................................................................................... 47

9.1.2 Setting drying parameters .................................................................................................... 48

9.1.3 How to implement drying ...................................................................................................... 53

9.2 Moisture analysis using the program library ...................................................................... 57

9.2.1 Enabling of program library .................................................................................................. 57

9.2.2 Setting drying parameters .................................................................................................... 58

9.2.3 How to save drying parameters ........................................................................................... 66

9.2.4 How to invoke drying parameters / drying ............................................................................ 66

10 STORING MEASURED RESULTS ............................................................... 70

11 GENERAL INFORMATION CONCERNING MOISTURE ANALYSIS ........... 71

11.1 Application .............................................................................................................................. 71

11.2 Basics ...................................................................................................................................... 71

11.3 Adjustment to existing measuring method ......................................................................... 71

11.4 Preparing a sample ................................................................................................................ 71

11.5 Sample material ...................................................................................................................... 73

11.6 Sample size / originally weighted in quantity ...................................................................... 73

11.7 Drying temperature ................................................................................................................ 74

11.7.1 Drying temperatures above 160 °C (MLS 50-3HA250N only) ......................................... 74

11.8 Description of heating profiles ............................................................................................. 75

11.9 Recommendations / Guidelines ............................................................................................ 76

12 DATA OUTPUT ............................................................................................. 77

12.1 Remote control instructions ................................................................................................. 78

13 SERVICE, MAINTENANCE, DISPOSAL ...................................................... 79

13.1 Cleaning .................................................................................................................................. 79

13.2 Change fuse ............................................................................................................................ 81

13.3 Servicing, maintenance ......................................................................................................... 81

13.4 Disposal ................................................................................................................................... 81

14 INSTANT HELP ............................................................................................. 82

15 DECLARATION OF CONFORMITY .............................................................. 83

MLS_C-BA-e-1330 3

Repeatability for

quantity 2 g

Repeatability for

quantity 10 g

Repeatability in weighing

deviation)

Environmental conditions

• +10°C….+40°C ambient temperature

• max 80% air humidity non-condensing

1 Technical Data

ata MLS 50-3C

Radiator

Temperature range max. 160°C Maximum load (Max) 50 g Readability (d) 1 mg

Display accuracy Weighed portion < 1.5 g

Display accuracy Weighed portion > 1.5 g

Recommended adjustment weight, not added (class)

Sample size max. 50 g Warm-up time 4 h

Infrared (1 x 400 W)

0,01 %

0,001 %

50g (F1)

Standard drying

Heating profiles

originally weighted in

mode (= standard

Step-by-step drying

Quick drying

Gentle drying

0.24 %

0,04 %

0,001g

4 MLS_C-BA-e-1330

• Automatic 1 (shut-down at change of weighing value

• Time-controlled (1 min – 99h 59 min)

Residual weight

[g]

Chart [%M]

Shut-down criteria

< 1mg within 10 s)

• Automatic 2 (shut-down at change of weighing value < 1mg within 25 s)

• Automatic 3 (shut-down at change of weighing value < 1mg within 60 s)

• Automatic 4 (shut-down at change of weighing value < 1mg within 90 s)

• Automatic 5 (shut-down at change of weighing value < 1mg within 120 s)

• Manual

Sample dishes included 10 (Ø 92 mm)

Display after drying

Display can be switched at any time

Moisture [%] = Weight loss from starting weight (SW)

Dry mass [%] = Residual weight (RW) left from starting weight (SW)

ATRO[%] [(SG – RG) : RG ] x 100% 0 – 999 %

0 – 100 %

100 – 0 %

shows theprogress of the drying process.

Dimensions Housing 206 x 333 x 192 mm

Available drying chamber 120 x 120 x 20 mm

Net weight 4.9 kg Electric Supply 230V/420W 50 Hz AC

1.1 Dimensions

MLS_C-BA-e-1330 5

Pos.

Description

Heated cover

Viewing panel

Halogen lamp

Sample dish

Windshield

Removal aid

Display

Keyboard

Adjustable foot

2 Device overview

6 MLS_C-BA-e-1330

2.1 Keyboard overview

Button Function

• Switch machine on/off

• Switch display during drying process

• Start/finish measurement

• Exit menu

• Quit

• Navigation keys

• Data export to external device

• Confirm / store settings

• Taring

• Zeroing

• Go to application menu

(set drying parameters)

• Call-up user menu

MLS_C-BA-e-1330 7

2.2 Display overview (during measurement)

1. Display in moisture %

2. Current moisture content in %.

3. Output interval 30 s

4. Unit of measured result

5. Shutoff criterion

6. Heating profile

7. Previous drying time

8. Current status

9. Processing temperature

10. Processing heating profile

11. Target temperature

12. Drying process active

8 MLS_C-BA-e-1330

3 Basic Information (General)

3.1 Proper use

The device purchased by you is designed for a fast and reliable determination of material moisture in liquid, porous and solid materials by applying the method of thermogravimetrics.

3.2 Improper Use

Impacts and overloading exceeding the stated maximum load (max) of the device, minus a possibly existing tare load, must be strictly avoided. Balance may be damage by this. Never operate device in explosive environment. The serial version is not explosion protected. The structure of the balance may not be modified. This may lead to incorrect weighing results, safety-related faul ts and des tr ucti on o f the balance. The balance may only be used according to the described conditions. Other areas of use must be released by KERN in writing.

3.3 Warranty

Loss of warranty due to

- Our conditions in the operation manual are ignored

- The appliance is used outside the described uses

- The appliance is modified or opened

- mechanical damage and damage caused by media, liquids, natural wear and tear

- The appliance is improperly set up or incorrectly electrically connected

- The measuring system is overloaded

3.4 Monitoring of Test Resources

In the framework of quality assurance the measuring-related properties of the balance and, if applicable, the testing weight, must be checked regularly. The responsible user must define a suitable interval as well as type and scope of this test. Information is available on KERN’s home page (www.kern-sohn.com) with regard to the monitoring of balance test substances and the test weights required for this. In KERN’s accredited DKD calibration laboratory test weights and balances may be calibrated (return to the national standard) fast and at moderate cost.

MLS_C-BA-e-1330 9

Carefully read this operation manual before setup and commissioning,

! ! !

! !

The sample itself, the sample dish and the

4 Basic Safety Precautions

4.1 Pay attention to the instructions in the Operation Manual

even if you are already familiar with KERN balances. All language versions contain a non-binding translation. The original German is binding.

4.2 Personnel training

The appliance may only be operated and maintained by trained personnel.

4.3 Danger Information

WARNING

The moisture analyser is used to analyse the moisture content of materials.

This instrument must be used exclusively for this purpose. Any other usage may cause a risk to personnel, damage to the instrument or other material damage.

The moisture analyser should be used mainly for the drying of aqueous

substances.

The moisture analyser may not be used in a hazardous area. The instrument may only be operated and maintained by trained personnel. Carefully read this operation manual before setup and commissioning, even if

you are already familiar with KERN instruments.

Hazards during and after measuring

Ensure correct installation of all components, see chap. 6.2 Careful when removing the sample.

heating unit may be very hot.

Use the sample retainer at all times as it allows safe working and prevents

burns.

Individual parts of the case (e. g. the ventilation grids) may heat up

considerably during operation. Therefore, only take hold of the instrument by the marked handles.

10 MLS_C-BA-e-1330

CAUTION

The moisture analyzer operates using heat!

CAUTION

Fire or explosion

WARNING

airways), induce nausea or result in death

+ Maintain sufficient space in the environment of the instrument to

prevent heat build-up (distance from the instrument 20cm, upwards 1m).

+ The heat extractor of the sample must never be covered, blocked,

taped up or altered in any other way.

+ Never place combustible materials on, under or next to the

instrument, as the environment of the instrument heats up to a high temperature.

+ Careful when removing the sample. The sample itself, the sample

dish and the heating unit may be very hot.

+ Explosive, easily flammable samples and samples that go into a

chemical reaction when subjected to heat, may not be analysed with the moisture analyser. Sample materi al s developing aggressive vapours (e. g. acids) may cause corrosion problems on some parts of the instrument.

+ If in doubt, conduct a risk analysis. + Select a drying temperature for samples of this kind that is low

enough to prevent ignition or explosion.

+ Wear safety goggles.

Substances that contain toxic or corrosive ingredients, produce toxic gases when drying, cause irritation (eyes, skin,

+ Sample materials emitting toxic substances must be dried with a

special extraction system in place. Create an environment that prevents the inhalation of vapours hazardous to health.

+ Sample materials developing aggressive vapours (e. g. acids) may

MLS_C-BA-e-1330 11

cause corrosion problems on some parts of the instrument.

Prior to dispatch disconnect all cables and remove loose/mobile

5 Transportation & Storage

5.1 Testing upon acceptance

When receiving the appliance, please check packaging immediately, and the appliance itself when unpacking for possible visible damage.

5.2 Packaging / return transport

 Keep all parts of the original packaging for a possibly required

return.



 Only use original packaging for returning.

parts.

12 MLS_C-BA-e-1330

 Secure all items against slipping or damage.

MLS_C-BA-e-1330 13

! !

should electromagnetic fields (e.g. due to mobile phones or radio instruments),

! !

6 Unpacking, Setup and Commissioning

6.1 Installation Site, Location of Use

The instrument is designed to achieve reliable weighing results under normal conditions of use. You will work accurately and fast, if you select the right location for the instrument.

On the installation site observe the following:

Remove explosion prone and easily flammable material in the immediate

vicinity. Emerging vapours, sample dish and all parts of the sample chamber are hot!

Protect the instrument against direct draughts due to open windows and

doors.

Avoid extreme heat and temperature fluctuations e.g. due to installation next

to radiators.

Do not expose the instrument to extreme dampness for longer periods of time.

Non-permitted condensation (condensation of air humidity on the instrument ) may occur if a cold instrument is taken to a considerably warmer environment. In this case, acclimatize the disconnected instrument for ca. 2 hours at room temperature.

Avoid direct sunlight The air humidity should be between 45% and 75%, non-condensing. Sufficient distance from heat-sensitive materials in area around instrument. Protect the instrument against high humidity, vapours and dust,

Major display deviations (incorrect weighing results) may be experienced

static electricity accumulations or instable power supply occur. Change location or remove source of interference.

Avoid static charging of the material to be weighed, weighing container and

windshield

Place the instrument on a firm, level surface. Avoid jarring during weighing.

14 MLS_C-BA-e-1330

Sample dish

6.2 Unpacking and assembly

Take the moisture meter carefully out of its packaging, remove the plastic jacket and install it at the designated work space. The moisture meter is supplied part-assembled. Control whether the delivery is complete immediately after unpacking the individual parts and assemble the separate component parts accor di ng to the encl ose d di ag r am.

Dish retainer

Removal aid

Windshield Windshield base plate

Put on the dish retainer carefully, ensuring correct positioning:

Level instrument with foot screws until the air bubble of the water balance is in the prescribed circle.

Check levelling regularly.

MLS_C-BA-e-1330 15

6.3 Scope of delivery

Serial accessories:

• Moisture analyzer, see illustration chap. 2

• 10 sample dishes

• Power cable

• Operating manual

6.4 Mains connection

Power supply is provided via the supplied mains cable. Check, whether the voltage acceptance on the scales is set correctly. Do not connect the scales to the power grid unless the information on the scales (sticker) matches the local mains voltage.

Important:

Does the labelling match the local mains voltage?

- Do not connect if mains voltages are different!

- If matching, connect the scales.

The moisture meter must be connected to a standard socket with earth terminal. Do not eliminate the protective effect by using an extension lead without earth terminal. For power supplies from power grids without earth terminals call a specialist to establish equivalent protection according to the relevant installation regulations.

6.4.1 Switch on the unit

Press the ON/OFF key. The unit will carry out a self-test. The device is ready for measuring as soon as 0.000 g appears on the weighing display. If the display deviates from zero, operate the TARE key.

6.5 Connection of peripheral devices

Before connecting or disconnecting of additional devices (printer, PC) to the data interface, always disconnect the balance from the power supply. With your balance, only use accessories and peripheral devices by KERN, as they are ideally tuned to your balance.

6.6 Initial Commissioning

In order to obtain exact results with the electronic balances, your balanc e must have reached the operating temperature (see warming up time chap. 1). During this warming up time the balance must be connected to the power supply (mains, accumulator or battery). The accuracy of the balance depends on the local acceleration of gravity. Strictly observe hints in chapter Adjustment.

16 MLS_C-BA-e-1330

6.7 Operating the scales using PS keyboard

Using a PS keyboard will help you to enter numbers and texts faster and easier.

Balance keyboard

PS keyboard

Balance keyboard

PS keyboard

7 Menu

The menu is arranged in a user and operator menu. Activate the user menu via the F key, the operator menu via the MENU button. The table below shows the functions of the user menu.

User menu (F-key)

P1 Calibration

P1 01 external calibration P1 02 user calibration P1 03 calibration test P1 04 temperature adjustment P1 05 protocol printout yes/no P1 06 temperature calibration

P2 GLP

P2 01 user P2 02 project P2 03 printout time yes/no P2 04 printout date yes/no P2 05 user printout yes/no P2 06 project printout yes/no P2 07 Id printout yes/no P2 08 cal. printout yes/no

MLS_C-BA-e-1330 17

Date/time

RS-232

Printout

P3 01 date format M/T/J; T/M/J P3 02 clock time format 12 h; 24 h P3 03 time P3 04 date P3 05 display time yes/no P3 06 display date yes/no

P4 Readout

P4 01 filter Extra slow; slow; standard; fast; extra fast P4 02 auto zero yes/no P4 03 temperature yes/no P4 04 negative yes/no

P5 01 Baud speed 2400; 4800; 9600; 19200 P5 02 parity None, even, odd P5 03 data bits 7 bits; 8 bits P5 04 stop bits 1 bit; 2 bits P5 05 handshake none; XON/XOFF; RTS/CTS P5 06 printout for style yes/no P5 07 printer Epson/Standard

P6 01 printout no. P6 02 header no. P6 03.line no. P6 04 footnote no. P6 05 1. printout start P6 06 1. printout stop P6 13 1. text P6 14 2. text

P7 Globals

P7 01 password None or 8 characters P7 02 program library 0 – off; 1 - on P7 03 beep 0 – off; 1 - on P7 04 language English, German P7 05 backlight 0 – off; 1 - on P7 06 Brightness P7 07 contrast P7 08 Balance Id P7 09 Software rev. MSF i.24 P7 10 parameter printout P7 11 parameter receive P7 12 ID setting P7 13 ID autoprint 0 – off; 1 - on P7 14 Prev. version 0 – off; 1 - on

18 MLS_C-BA-e-1330

Either

Simply invoke and start

P1 alibration P2 GLP P3 D

P5 RS-232 P6 P7

ate/Time

P4 Redout

Printouts Globals

Setup29.12.04

7.1 Navigation in the menu:

Operation/display: Description:

The overview for the Operator Menu appears

P7 02 program library “on“ (See chpt. 9.2.1)

Up to 100 different drying processes can be stored in the device. the finished processes from the library.

P7 02 program library “off” (See chpt. 9.1.1)

Press the Esc-key and exit the overview without changing any settings

The overview for the User Menu appears

Either press the Esc-key twice and exit the overview without changing any settings or or change settings in the menu as follows.

Menu selection via arrow keys: Use the cursor (►) to select your setting.

Use the  key to move the cursor (►) down, the  key to move it up

MLS_C-BA-e-1330 19

How to change functions and parameters

To shift to the right or left by one menu item press the

Change display during drying process

5. Weight loss in [g]

Setup

29.12.04 Setup

Confirm the setting by pressing the -key; the submenu appears on the display

Use the arrow keys to move within and enter into the menu:

To select parameters in a function or to increase/decrease the value of a digit or number press the - and -key.

- and -key.

Confirm your entries

There are 5 different options to di spl ay the measured result; switching is achieved by pressing the M-key.

1. Drying time

2. Temperature in heating chamber

3. Heating profiles

4. Result in %M; %D; %R – diagram

20 MLS_C-BA-e-1330

Any changes made will be saved when returning to weighing mode by using the following

Einstellungen

Save ? [Enter/Esc] setup

29.12.04

Setup

Saveing...

Einstellungen29.12.04

saving procedure:

either

Actuate Esc key again, a message will inquire whether you want to save the changes you made.

To save your changes, press the PRINT-key.

If you do not wish to save your changes, press the Esc-

key

MLS_C-BA-e-1330 21

1. Menu number (P1 - P9)

P1 alibration P2 GLP P3 D

P5 RS-232 P6 P7

ate/Time

P4 Readout

Printouts Globals

Setup

1 3 2

29.12.04

Setup

1 5 2

7 3 4

8 User menu

Press the F-key; the main menu appears:

1. Menu number (P1 - P9)

2. Menu designation

3. Cursor (►) indicates the current menu item

Use the cursor (►) to select your setting. Use the  key to move the cursor (►) down, the  -key to move it up Press the – key; the submenu appears:

2. Submenu number and name

3. Parameter value or ****** if menu item is stored as a function

4. Description of function

5. Cursor (►) shows the current menu item (e.g. P1).

6. Cursor (►) shows the current setting (e.g. 06).

7. Status

8. Use the arrow key to modify the parameter value, the active parameter blinks.

22 MLS_C-BA-e-1330

P1 alibration P2 GLP P3 D

P5 RS-232 P6 P7

ate/Time

P4 Redout

Printouts Globals

Setup29.12.04

Setup

29.12.04 Setup

8.1 P1 Calibration (adjustment)

As the acceleration value due to gravity is not the same at every location on earth, each balance must be coordinated - in compliance with the underlying physical weighing principle - to the existing acceleration due to gravity at its place of location (only if the balance has not already been adjusted to the location in the factory). This adjustment process must be carried out for the first commissioning, after each change of location as well as in case of fluctuating environment temperature. To receive accurate measuring values it is also recommended to adjust the balance periodically in weighing operation.

Procedure when adjusting:

Calibration should be carried out by using a recommended calibration weight. (See chpt. 1 “Technical specifications“): Observe stable environmental conditions. A warm-up time of 2 hours is necessary for stabilisation.

Note! Sample dishes must be in place. During the adjustment process no objects should be on the sample plate.

Operation Display

Call up menu item "P1 Calibration" (see chapt. 7.1) Press  button

01 Adjustment using external weight – Ext. Cal

Press  button Ensure that there are no objects on the sample

plate.

Press PRINT key, on the display appears the weight value of the adjusting weight.

MLS_C-BA-e-1330 23

Setup

Saveing...

Setup29.01.08

Setup29.12.04 Setup

Place the adjustment weight in the centre of the sample dish, then press the PRINT key. If the adjustment was successful, this will be followed by automatic reset to the menu. The ESC key may be used to cancel the adjustment. Errors during adjustment or the use of an incorrect adjusting weight will result in an error message. Repeat adjustment.

Return to weighing mode:

Press the ESC-key repeatedly until the query ”SAVE?“ appears.

Confirm query by pressing the PRINT-key or reject it by pressing the ESC-key.

02 External adjustment using freely selectable weight – user Cal

To select “02 User Cal.“, use the arrow keys ( )

Press -key, on the display appears the weight value of the adjusting weight. The first dig it of the displayed value is flashing. Now you can ma ke changes pressing the arrow keys. To change the number value, press the   keys. To select a digit to the left/right, press the   keys. Confirm the entered weight value by pressing the PRINT-key.

24 MLS_C-BA-e-1330

Setup

Saveing...

Setup29.01.08

We recommend:

Ensure that there are no objects on the weighing plate. Press the PRINT key.

In the display there appears the value of the adjustment weight.

Place the required adjustment weight in the centre of the sample dish, then press the PRINT key. If the adjustment was successful, this will be followed by automatic reset to the menu. Take away adjustment weight. The ESC key may be used to cancel the adjustment. Errors during adjustment or the use of an incorrect adjusting weight will result in an error message. Repeat adjustment.

Return to weighing mode:

Press the ESC-key repeatedly until the query ”SAVE?“ appears.

Confirm query by pressing the PRINT-key or reject it by pressing the ESC-key.

Carry out all adjustments as close as possible to the maximum load of the balance. Info about test weights can be fou nd on the Internet at: http://www.kern-sohn.com

MLS_C-BA-e-1330 25

Setup29.12.04 Setup

Einstellungen

Calibration check Cear the pan [Enter]

Einstellungen

Calibration check Weight measuring

Einstellungen

Calibration check Load weigh [Enter]

t 50.0g

Einstellungen

Calibration check Weight measuring

Calibration

Check results Cal.: 180.1354 Act.: 180.1438 Diff.: - 0.0084

Setup29.12.04 Setup

03 Calibration test

This is used to determine the deviation from the last adjustment. This is only a check, i.e. no values are changed.

Press the arrow keys ( ), to select “03 Cal. test“.

Press  button Ensure that there are no objects on the weighing

plate. Press PRINT key, on the display appears the weight

value of the required adjusting weight.

Then place the required adjustment weight in the centre of the sample dish, press the PRINT -key.

The result of the calibration test is shown on the display.

Take away adjustment weight. To return to the menu or weighing mode, press the ESC-key several times.

Return to weighing mode: Press the ESC-key repeatedly until the query ”SAVE?“ appears. Confirm query by pressing the PRINT-key or reject it by pressing the ESC-key.

26 MLS_C-BA-e-1330

06 Temperature calibration

Preparation:

We recommend occasionally checking the temperature level of the device using the temperature calibration set MLB-A12.

 Switch off instrument.  Remove sample dish, dish holder, removal

aid and windshield.

MLS_C-BA-e-1330 27

 Install the temperature-calibration set acc.

to fig.

 Switch on instrument.

Enter serial number of the temperature calibration set

The instrument will be automatically heated to the set

Begin temperature calibration:

 Close heating hood and carry out

temperature calibration as described in the following.

 On the temperature calibration set switch-

on the digital thermometer by the ON/OFF button.

Press the arrow keys ( ), to select “06 Drying test “

Press the -key The display to enter the temperature value to be

tested will appear. The current menu item blinks. Select the desired temperature with the navigation keys. Press PRINT button to accept.

Enter permitted deviation with the navigation keys. Press PRINT button to accept.

with the navigation keys. Press PRIN T butt on to accept

temperature. The current temperature and the elapsed time will be indicated in the display. The procedure lasts 8 minutes .

The display for entering the temperature of the external thermometer will be displayed. Enter temperature value with the navigation keys. Press PRINT button to accept

If an optional printer is connected, a record will be produced by pressing PRINT butt on.

28 MLS_C-BA-e-1330

Printout example KERN YKB-01N:

Return to weighing mode:

Press the ESC-key repeatedly until the query ”SAVE?“ appears. Confirm query by pressing the PRINT-key or reject it by pressing the ESC-key.

After ineffective temperature calibration you will have to carry out temperature adjustment; see function „P1 04“.

MLS_C-BA-e-1330 29

Temperature calibration of secend point will take 8

Setup

29.12.04 Setup

Setup

29.01.08

Setup

Temperature calibration 1 point 14:59

Setup

29.01.08

Setup

Temperature calibration 1 point 00:00

Setup

29.01.08

Setup

Temperature calibration Set temp. value [°C] 25

Setup

29.01.08

Setup

Temperature calibration Set temp. value [°C] 24

Setup

29.01.08

Setup

Temperature calibration 2 point 14:59

Setup

29.01.08

Setup

Temperature calibration 2 point 00:00

Setup

29.01.08

Setup

Temperature calibration Set temp. value [°C] 120

Setup

29.01.08

Setup

Temperature calibration Set temp. value [°C] 122

Setup

29.01.08

Setup

Temperature calibration 2 point 00:00

1 point 07:59

2 pointt 07:59

3 point 07:59

04 Temperature adjustment

The temperature is measur ed at thr ee poin ts and can be adj us t ed at these temperature points. Before you do this, allow the device to cool down for at least 3 hours after the last heating phase.

For preparation/installation of temperature calibration set( MLB-A12) , see

function "06 Temperature calibration“ Begin temperature adjustment:

Select by using the arrow keys ( ) „04 Temp.cal“ Press  key

Temperature calibration starts.

Temperature calibration of first point will take 8 min after which you will hear an acoustic signal.

Enter the temperatur value as indicated on the external thermometer with the help of the navigation buttons  .

Confirm with PRINT key, the second heating phase is starting.

min after which you will hear an acoustic signal

Enter the temperatur value as indicated on the external thermometer with the help of the navigation buttons  .

Confirm with PRINT key, the third heating phase is starting.

30 MLS_C-BA-e-1330

Temperature calibration of third point will take 8 min

Setup

Saveing...

Setup29.01.08

Setup

29.01.08

Setup

Temperature calibration Set temp. value [°C] 122

Setup

29.01.08

Setup

Temperature calibration Set temp. value [°C] 122

Setup

29.01.08

Setup

Temperature calibration Set temp. value [°C] 122

Setup

29.12.04 Setup

3 point 00:00

after which you will hear an acoustic signal

Enter the temperatur value as indicated on the external thermometer with the help of the navigation buttons  .

Confirm with PRINT key, the instrument is returning to the menu.

Return to weighing mode:

Press the ESC-key repeatedly until the query ”SAVE?“ appears.

Confirm query by pressing the PRINT-key or reject it by pressing the ESC-key.

MLS_C-BA-e-1330 31

Setup

29.12.04 Setup

***Protocol of external calibration***

05 Report printout

This menu point is used to enable the function for printing your adjustment data. Press the arrow keys ( ), to select “05 Print report“

Press the -key; the current menu item blinks. Press the arrow keys ( ), to select the desired

settings:

0 Report printout disabled 1 Report printout enabled

Confirm by pressing the PRINT key.

Return to weighing mode:

Press the ESC-key repeatedly until the query ”SAVE?“ appears. Confirm query by pressing the PRINT-key or reject it by pressing the ESC-key.

If Report printout is enabled you will receive a protocol for your adjustment data after each adjustment. The content of this

the data defined in P2

GLP (See chpt. 8.2)

Person in charge of calibration : external

Diff.. : -0.0624 g

Signature………………………….

printout depends on

32 MLS_C-BA-e-1330

P1 alibration P2 GLP P3 D

P5 RS-232 P6 P7

ate/Time

P4 Redout

Printouts Globals

Setup29.12.04

Setup

01 User 02 Pr 03 Time print 04 Date print 05 User print

oject

ojekt

Last Cal

06 P print 07 Id print 08 Print

WX /235

0 1

Nowak

0 1 1

off on

off

31.01.05

Setup

01 User 02 Pr 03 Time print 04 Date print 05 User print

oject

ojekt

Last Cal

06 P print 07 Id print 08 Print

WX /235

0 1

Nowak

0 1 1

off on

off

31.01.05

8.2 P2 GLP (Good laboratory practice)

Quality assurance systems require printouts of weighing results as well as of correct adjustment of the balance stating date and time and balance identification. The easiest way is to have a printer connected. Definition of a standard log:

Operation Display

Call up menu item "P1 Calibration" (see chapt. 7.1) Press  button

01 User

Press the arrow keys ( ), to select “01 User“. Press  button Enter user name or number

(max. 8 characters) via arrow keys (See chpt. 7.1); relevant enabled digit flashes

Confirm by pressing the PRINT key

02 Project

Press the arrow keys ( ), to select “02 Project“. Press  button Enter project name or number

(max. 8 characters) via arrow keys (See chpt. 7.1); relevant enabled digit flashes

Confirm by pressing the PRINT key All other settings (03 - 08) are executed analoguely

MLS_C-BA-e-1330 33

Printout time

yes

Printout date

yes

User printout

yes

Project printout

yes

ID-printout

yes

Cal. printout

yes

Printout time

Printout date

yes

User printout

yes

Project printout

ID-printout

yes

Cal. printout

Date: 22/10/2013

Date : 18.01.13

All settings that are supposed to be printed must be activated with "1 / yes" Example 1:

Adjustment printout

Time : 10:41:13 User : Mustermann Project : AB/007 Balance no. : WL 041078

----------------------------

18.01.13 07:48

Calibration Deviation : 0.0001 g

-----------------------------------

130,0500 g

Example 2:

Adjustment printout

User: Mustermann Balance no.: 10

---------------------------------------

13.0521 g

34 MLS_C-BA-e-1330

P1 alibration P2 GLP P3 D

P5 RS-232 P6 P7

ate/Time

P4 Redout

Printouts Globals

Setup29.12.04

Setup

01 02 03 04 05

Date format Time format Time Date Disp. time

Date06 Disp.

DA /MO/Y R

24 Std.

********

Function

********

Function

29.12.04

Setup

01 02 03 04 05

Date format Time format Time Date Disp. time

Date06 Disp.

DA /MO/Y R

24 Std.

********

Function

********

Function

29.12.04

8.2.1 P3 Date/time

Under this menu item you can set output and format of time and date.

Operation Display

Call up menu item "P3 Date/time" (see chap. 7.1) Press  button

01 Date format

Press the arrow keys ( ), to select ”01 Date Format“.

Press  button Press the arrow keys ( ), to select among the

settings below:

1 Month/Day/Year 0 Day/Month/Year

Confirm by pressing the PRINT key

02 Time format

Press the arrow keys ( ), to select “02 Time Format“.

Press  button Press the arrow keys ( ), to select among the

settings below:

0 24 hours 1 12 hours (PM/AM)

Confirm by pressing the PRINT key

MLS_C-BA-e-1330 35

Setup

01 02 03 04 05

Date format Time format Time Date Disp. time

Date06 Disp.

DA /MO/Y R

24 Std.

********

Function

********

Function

29.12.04

Setup

01 02 03 04 05

Date format Time format Time Date Disp. time

Date06 Disp.

DA /MO/Y R

24 Std.

********

Function

********

Function

29.12.04

Setup

01 02 03 04 05

Date format Time format Time Date Disp. time

Date06 Disp.

DA /MO/Y R

24 Std.

********

Function

********

Function

29.12.04

Setup

Year 200 Mo 11

nth

Day

APRIL 200 4

Setup

29.12.04

03 Time

Press the arrow keys ( ), to select “03 Time“. Press  button Press the arrow keys ( ), to select the desired

settings: Press  button Press the arrow keys ( ), to trigger your

selection. Press the -key, to confirm the selected setting

(e.g. hours), the current menu item flashes To change the number value, press the   keys.

Press the   keys, to select the digit on the left/right (the relevant current digit flashes). Confirm input by pressing the PRINT key.

To change minutes and seconds proceed in the same way.

To confirm, press the PRINT-key; the scales display the time you selected.

04 Date

Press the arrow keys ( ), to select “04 Date“. Press  button

All other settings are made in the same way as time (03 Ti me).

36 MLS_C-BA-e-1330

Setup

01 02 03 04 05

Date format Time format Time Date Disp. time

Date06 Disp.

DA /MO/Y R

24 Std.

********

Function

********

Function

29.12.04

P1 alibration P2 GLP P3 D

P5 RS-232 P6 P7

ate/Time

P4 Readout

Printouts Globals

Setup

01 Filter 02 03

Autozero Temperature

04 Negative

Slowest.

On Function disabled

********

Setup

29.01.08

05/06 Overlay of time/date on display

Press the arrow keys ( ), to select “05/06 display. Select time/date“ .

Press the  key; the current menu item blinks Press the arrow keys ( ), to select among the

settings below:

0 Time/date i s displayed in the status bar 1 Time/date is not displayed in the status bar

Confirm by pressing the PRINT key

Return to weighing mode:

Press the ESC-key repeatedly until the query ”SAVE?“ appears. Confirm query by pressing the PRINT-key or reject it by pressing the ESC-key.

8.2.2 P4 display

Operation Display

Call up menu item "P4 Display" (see chapt. 7.1) Press  button

01 Filter

Press the arrow keys ( ), to select “01 Filter“. Press the -key; the current menu item blinks Press the arrow keys ( ), to select among the

settings below:

1 Very quiet and stable environment Scales work very fast but more sensitive to external influences

5 Turbulent Environment

Scales work slower but are less sensitive to external influences

Confirm by pressing the PRINT key

MLS_C-BA-e-1330 37

Setup

01 Filter 02 03

Autozero Temperature

04 Negative

Slowest.

On Function disabled

********

Setup

29.01.08

Setup

01 Filter 02 03

Autozero Temperature

04 Negative

Slowest.

On Function disabled

********

Setup

29.01.08

Setup

01 Filter 02 03

Autozero Temperature

04 Negative

Slowest.

On Function disabled

********

Setup

29.01.08

Wiegen

0.0000

0% 100%

27.01.05

Wiegen

100%

27.01.05

0.0000

27.01.05

Wiegen

Setup

29.12.04

02 Auto zero

Press the arrow keys ( ), to select “02 Auto zero“. Press the -key; the current menu item blinks Press the arrow keys ( ), to select among the

settings below:

0 Deviations from the Zero display are

not automatically tared.

1 Deviations from the Zero display are

automatically tared.

Confirm by pressing the PRINT key

03 Temperature

Press the arrow keys ( ), to select “03 Temperature“ .

Press the - key; sample room temperature is displayed.

To return to menu, press the ESC-key

04 Negative

Press the arrow keys ( ) to select “04 Negative“. Press the  -key; the current menu item bli n k s Press the arrow keys ( ) to reverse the colour

setting of the display.

0 blocked 1 active

Confirm by pressing the PRINT key

Return to weighing mode:

Press the ESC-key repeatedly until the query ”SAVE?“ appears. Confirm query by pressing the PRINT-key or reject it by pressing the ESC-key.



38 MLS_C-BA-e-1330

P1 alibration P2 GLP P3 D

P5 RS-232 P6 P7

ate/Time

P4 Redout

Printouts Globals

Setup

01 B ud rate 02 Parity 03 Data bits 04 Stop bits 05 Handshake

07 Printer type 0 Stand.

06 Print of stab

2 0

9600

8 bits 1 bit

2 1

none

none none

29.12.08

8.2.3 P5 RS-232

In this menu item you can save your settings for the interface.

Operation Display

Call up menu item "P5 RS-232" (see chapt. 7.1) Press  button

01 - 08

Press the arrow keys ( ) to select your settings (01 – 08).

Press the -key; the current menu item blinks Use the arrow keys (see chapter 7.1) to save your

settings

Confirm by pressing the PRINT key

Return to weighing mode:

Press the ESC-key repeatedly until the query ”SAVE?“ appears. Confirm query by pressing the PRINT-key or reject it by pressing the ESC-key.

MLS_C-BA-e-1330 39

P1 alibration P2 GLP P3 D

P5 RS-232 P6 P7

ate/Time

P4 Redout

Printouts Globals

Setup

Date: 22/10/2013

? 62.685 g *

8.2.4 P6 output

In this menu item you can select between 5 different types of data output:

Operation Display

Call up menu item "P6 Output" (see chapt. 7.1) Press  button

01 Printout no.

Press the arrow keys ( ) to select “01 printout no.“

Press the -key; the current menu item blinks Press the arrow keys ( ), to select among the

settings below:

0 standard

1 1. printout

4 4. printout

Confirm by pressing the PRINT key

8.2.4.1 Standard data output (0 standard)

Data output is carried out by actuating the PRINT-key. Definition of the log header is executed in menu item “P2 GLP”.

Examples in weighing mode:

Time: 13.04.23 User: Mustermann Project: XW/456

0.008 g

Time: 13.16.49 User: Mustermann Project: XW/456 Balance: 10

*: ? = instable measuring value

40 MLS_C-BA-e-1330

------------------- Start drying-------------------

--------- End of drying procedure ---------



Example in drying mode:

Program nb : 1 Name : Floar 100 Profile : Standard Dry temp. : 120 °C Switch off : Automatical 3 Result : Moisture contents - %M Printout int : 30 s Target : None T. coeficjent : 0.00

Start weight : 9.993 g

0:00:30 0.01 %M 0:01:00 0.02 %M 0:01:30 0.03 %M

Final mass : 9.990 g

Dry time : 0:01:45 Final result : 0.03 %M



Header

Measured values

Footers

8.2.4.2 User defined data output (1st printout ↔ 4th printout)

Here you can define 4 different types of data output.  The content of the data output is defined as follows.

First line 1. Printout start - 0.1, i.e. text begins at line 1 (1. Text) Last line 1. Printout stop - 20, i.e. text ends at line 20 (20. Tex t )

 Text input per line is carried out via the arrow keys (see chapter 7.1)

in the respective strings.

1. Text Start of text input

20. Text End of text input During text input lines may overlap, e.g.:

1. Printout start - 1

1. Printout stop - 40

2. Printout start - 20

2. Printout stop - 40

MLS_C-BA-e-1330 41

Printout of 1 character “%” (i.e. in order to print out 1 character %, two %% must be entered)

Net weight

Current date

Current time

Balance ID-no.

Program no.

Project number.

User no.

Date and time of last adjustment

Type of last adjustment

Deviation from last adjustment

Code 1

Code 2

Code 3

Code 4

Code 5

Code 6

Text input:

• Max. 640 characters

• 80 lines

• 8 characters per line

 After each line confirm your text input using the PRINT-key.  After entering full text press the ESC –key; query appears, whether you want to

save your entries.

 Confirm by pressing the PRINT-key (See chpt. 7.1).

Apart from flow text (characters, numbers and numerals) the following variables are stored in the menu:

General variables

42 MLS_C-BA-e-1330

Printout of 1 character “/” (i.e. in order to print out 1 character /, two // must be entered)

CRLF (carriage return line feed) line beginning next line

CR (carriage return) line beginning

LF (line feed) next line

tabulator

Next "Text"

End of data input

Temperature sample room

Result - wet

Result - dry

Result – wet/dry

Result

Drying time

Initial value sample

Final value sample

Parameter for drying process

Print related variables

c r

Variables in drying mode

Input of variables via arrow keys.

MLS_C-BA-e-1330 43

Parameter No.

Text

1 2 3 4 5 6 7 8 20 Text 10

M a x m a s s 21 Text 11

c a n n o t 22 Text 12

e x c e e d 23 Text 13

1 1 . 2 5 0 g 24 Text 14

! 25 Text 15

Parameter No.

Text

1 2 3 4 5 6 7 8 26 Text 16

K e r n & S 27 Text 17

o h n G m b H 28 Text 18

\ c D a t u m : 29 Text 19

% d \ c Z e i t 30 Text 20

: % t \ r \ n G 31 Text 21

e w i c h t : % 32 Text 22

N \ c \ c * * * 33 Text 23

* * U n t e r s 34 Text 24

c h r i f t : . 35 Text 25

. . . . . .

36 Text 26

. . \ c * * % F 37 Text 27

* * * \ c

Example of text input in weighing mode:

Example 1: Max mass can not exceed 11.250 g!

Example 2: Kern & Sohn GmbH

Date: Time: Weight:

*****Signature:..........

*** current mode***

44 MLS_C-BA-e-1330

2. printout

3. printout

4. printout

Start of the measurement

Signature:……………



Example for text input in drying mode

Parameter selection: Header – 2. printout (menu item P6 01header no.)

Measured value – 3. Printout (menu item P6 01 line no.) Footers – 4. Printout (menu item P6 01 footnote no.)

* string = Text

Printout:

Date : 27:11:2003 Time : 11:27 Dryling parameters. Program number : 3 Name : Floar 100 Profile : Standard Dry temperature : 120 °C Switch off : Automatic 3 Result : Moisture contents %M Printout int : 30 s Target : none T. coeficjent : 0.00

Start weight 5.433 g

0:00:30 0.53 %M 5.031 g 0:01:00 2.02 %M 4.636 g 0:01:30 3.18 %M 4.254 g

Final mass : 4.090 g

Dry time: 0:01:45 Final result: 4.01 %M

Finish measurement

Header

Measured value

Footers



MLS_C-BA-e-1330 45

P1 alibration P2 GLP P3 D

P5 RS-232 P6 P7

ate/Time

P4 Readout

Printouts Globals

Setup

01 02 03 04 05

Password Prog.library Beep Language Backlight Contrast Balance Id Software rev.

printout

receive

ID setting

12 Id autoprint

06 07 08 09 10 11

Pa r. Pa r.

Function

********

un tionFc

Einstellungen29.12.04

********

Wl04305 MXA0.40

********

un tionFc

01 Password

Password protection

02 Program library

Program overview

03 Signal

Tone on/off

04 Language

User guidance selectable in German, English and Spanish

05 Backlight

Back lighting of the display on/off

06 Brightness

Display brightness

07 Contrast

Contrast of the display

08 Balance ID.

Balance identification no.

09 Software rev.

Software issue

10 Parameter printout

Balance parameters are printed out

11 Par.receive

Not documented

12 ID Setting

Entering a user code

13 ID autoprint

User code can also be printed

14 Prev. version

Last software version

8.2.5 P7 General functions

Operation Display

Call up menu item "P7 Others" (see chapt. 7.1) Press  button

01 – 12 Parameter selection

Press the arrow keys ( ), to select your settings (01 – 12) .

Press the  -key; the current menu item bli n k s Use the arrow keys (see chapter 7.1) to save your settings Confirm settings by pressing the PRINT key

Return to weighing mode:

Press the ESC-key repeatedly until the query ”SAVE?“ appears. Confirm query by pressing the PRINT-key or reject it by pressing the ESC-key.

46 MLS_C-BA-e-1330

P1 alibration P2 GLP P3 D

P5 RS-232 P6 P7

ate/Time

P4 Readout

Printouts Globals

Setup

01 02 03 04 05

Password Prog.library Beep Language Backlight Contrast Balance Id Software rev.

printout

receive

ID setting

12 Id autoprint

06 07 08 09 10 11

Pa r. Pa r.

off

Function

********

un tionFc

Einstellungen29.12.04

********

Wl04305 MXA 0.40

********

un tionFc

9 Operator menu – moisture analysis

The device has space for up to 100 different, operator-defined drying processes. Simply invoke and start the finished processes (See chpt. 9.2). How to set drying parameters without using the program library is describes in the chapter below.

9.1 Moisture analysis without using the program library

9.1.1 Disabling the program library

To enter drying parameters at will disable the program library in the user menu as follows:

Operation Display

Press F key Press the arrow keys ( ), to invoke menu item

“P7 Other“ Press  button

Press the arrow keys ( ), to select „02–Program Library“

Press the  button and the current setting will flash Press the arrow keys ( ), to disable the program

library (0 = no) Confirm by pressing the PRINT key

Press the ESC-key repeatedly until the query ”SAVE?“ appears. Confirm query by pressing the PRINT-key

MLS_C-BA-e-1330 47

9.1.2 Setting drying parameters

You can enter parameter s for eac h drying process in the menu, as follows:

• Heating profile (temperature, time)

• Shutoff criterion

• Unit of measured result

• Output interval

Operation Display

To enable the operator menu, press the Menu-key. The first menu item “Profiles“ appears.

1. Heating profiles

This is used to select suitable heating programs as well as to enter drying temperature and drying time.

Press button Press the arrow keys ( ), to select among the

heating programs below (see also chpt. 11.8)

• Standard

• Step-by-step

• Soft

• Fast

First select a heating profile, then enter the desired parameters (temperature/drying time).

Press the  -button; the cursor (►) marks the adjustable parameter

Press the -button anew and the current setting will flash

Press the arrow keys ( ), to carry out the desired setting

Confirm by pressing the PRINT key For further parameter s etti ng s proce ed as ab ove

48 MLS_C-BA-e-1330

To return to menu, press the PRINT-key. This is where you can store further drying parameters.

Return to weighing mode:

Press the ESC-key repeatedly until the query ”SAVE?“ appears. Confirm query by pressing the PRINT-key or reject it by pressing the ESC-key.

2. Shutoff criterion

This is used to select the criteria used for finishing the drying process.

Press the  button; the menu item “Finish“ appears. Press  -button Press the arrow keys ( ), to select among the

finishing criteria:

 Shutoff criterion mg per time

Drying is shut off when the weight loss for the set time is smaller than the number of set digits (1 digit = 1mg)

How to select the desired setting: Press  -button Press the arrow keys ( ), to carry out the desired setting. Automatic 1: Shutoff for change of weighing value < 1mg within 10s. Automatic 2: shutoff during change of weighing value < 1mg within 25s Automatic 3: Shutoff for change of weighing value < 1mg within 60s. Automatic 4: shutoff during change of weighing value < 1mg within 90s Automatic 5: shutoff during change of weighing value < 1mg within 120s

MLS_C-BA-e-1330 49

% 60s

% 0.100%



 Define

Settings are available for selection from 0 to 10 mg in 0.1 mg steps and from 5 seconds to 175 in 5 second steps.

Press  key; the cursor (►) marks the adjustable parameter Press the - button anew and the current setting will flash Press the arrow keys ( ), to carry out the desired setting Confirm by pressing the PRINT key

 Define 2

Drying is shut off as soon as the weight loss within 60 s is smaller than the set percentage value (adjustable from 0.001 % to 9.999% ) .

Press  key; the cursor (►) marks the adjustable parameter

Press the - button anew and the current setting will flash

Press the arrow keys ( ), to carry out the desired setting

Confirm by pressing the PRINT key  Test

Shut off for change of weighi ng value < 1mg in freely defined time interval

 Manual

Shutoff drying process manual

 Temporal

Drying is shut off when set time has passed, adjustable from 1min – 9h 59 min

Press  -key; the cursor (►) marks the adjustable parameter Press the - button anew and the current setting will flash Press the arrow keys ( ), to carry out the desired setting Confirm by pressing the PRINT key

50 MLS_C-BA-e-1330

To return to menu, press the PRINT-key. This is where

reject it by pressing the ESC-key.

you can store further drying parameters.

you can store further drying parameters. or

Return to weighing mode:

Press the ESC-key repeatedly until the query ”SAVE?“ appears. Confirm query by pressing the PRINT-key or

3. Unit of measured result

This is used to define the unit of the measured result.

Press the  key; the menu item “Result“ appears Press  button Press the arrow keys ( ), to select among Types of

Output (see tab.1):

 Moisture content

 ATRO moisture content

 Residual weight in grams

 Dry material content

 Cal cul ati on acc or di ng to prop or ti on o f moist ur e,

illustration in diagram

To return to menu, press the PRINT-key. This is where

MLS_C-BA-e-1330 51

g: Residual weight in grams

Diagram

Tab. 1

% M: Moisture content

% D: Dry material content

% R: ATRO moisture content

Display shows the moisture content of the sample as a percentage of the wet weight (W = wet weight = starting weight = 100%)

Wet weight W – dry weigh t D

M [0…-100%]

Wet weight W

x 100%

Display shows dry material content of sample as a percentage of the wet weight (W = wet weight = starting weight = 100%)

Dry weight D

D [100…0%]

Wet weight W

x 100%

Display shows moisture content of the sample as a percentage of the dry weight (D = dry weight = final weight =100%)

ATRO

[0…-999%]

Wet weight W – dry weigh t D

x 100%

Dry weight D

Display shows the weight of the sample in grams.

Calculation according to prop or ti on o f moisture, illustration in diagr am

52 MLS_C-BA-e-1330

Su szenie

0.235

09:28:30

120 C 120 C

19/09/03

%M 30s

0:03:25

Dryin g 09:28:30

4 6

4. Output interval

This is used to set at which interval interim results are to be printed.

Press the  -key; the menu item “Printout Interval“ appears

Press  button Press the arrow keys ( ), to adjust the printer

interval from 1 second to 5 minutes or to determine that no printout is requir ed.

Confirm by pressing the PRINT-key.

Press the PRINT-key once more; the device returns to weighing mode.

9.1.3 How to implement drying

After setting the desired drying parameter for the sample to be tested, you can now start the drying process. You may of course also carry out drying with the help of the factory set drying parameters.

Display overview during drying:

The display during drying contains all the important information:

MLS_C-BA-e-1330 53

1. Date

2. Time

3. drying parameters: Heating profile / shutoff criteria / unit of measured result / output interval

4. Processing time

5. Target temperature

6. Processing temperature

7. Graphics showing current status

Operation Display

Actuate START/STOP-key

Place removal aid with empty sample dish on the sample dish retainer. Make sure that the sample dish is resting flat on the sample dish retainer. Use the sample retainer at all times as it allows safe working and prevents burns.

To help with stabilisation, close lid. Press the TARE-key; the device is ready for

weighing the initial sampling quantity

54 MLS_C-BA-e-1330

Place sample in sample dish

Close lid; the device is ready for measuring

Drying will start automatically after scales have settled.

Drying parameters are shown on the display.

MLS_C-BA-e-1330 55

--------------- Start drying----------------

To switch the display to the various units of the measured result, press the M-key.

When drying is finished, you will hear an acoustic signal and the heating will be shut off.

The display shows the measured result in the set unit.

Open lid and remove the sample with the help of the removal aid.

Caution: Caution! Sample dish and all parts of the sample chamber are hot!

Data output via RS 232 interface is achieved by pressing the PRINT-key:

Program no. : 1 Name : Floar 100 Profile : Standard Dry temp. : 120 °C Switch off : Automatical 3 Result : Moisture contents %M Printout int : 30 s Target : None T. coeficjent : 0.00

Start weight : 9.993 g

0:00:30 0.01 %M 0:01:00 0.02 %M 0:01:30 0.03 %M

Final mass : 9.990 g

Dry time : 0:01:45 Final result : 0.03 %M

--------End of drying procedure------

56 MLS_C-BA-e-1330

P1 alibration P2 GLP P3 D

P5 RS-232 P6 P7

ate/Time

P4 Readout

Printouts Globals

Setup

01 02 03 04 05

Password Prog.library Beep Language Backlight Contrast Balance Id Software rev.

printout

receive

ID setting

12 Id autoprint

06 07 08 09 10 11

Pa r. Pa r.

Function

********

un tionFc

Einstellungen29.12.04

********

Wl04305 MXA 0.40

********

un tionFc

9.2 Moisture analysis using the program library

The device has a memory for drying processes! 99 drying process es can be allocated to this memory (library). Simply invoke and start the finished processes from the library.

9.2.1 Enabling of program library

Operation Display

Press F key Call up menu item "P7 Others" (see chapt. 7.1) Press  button

Press the arrow keys ( ), to select „02–Program Library“

Press the -key; the current menu item blinks Press the arrow keys ( ), to enable the program

library (1 = yes) Confirm by pressing the PRINT key

Press the ESC-key repeatedly until the query ”SAVE?“ appears. Confirm query by pressing the PRINT-key or reject it by pressing the ESC-key.

After enabling the “program library” you will first be taken to the “program library” when starting a new drying process.

The library is used to save the parameters below:

• Denomination, e.g. the name of the sample (e. g. powder)

• Heating pr ofile (e. g. soft)

• Drying temperature

• Shutoff criteria

• Unit of measured result

• Output interval

• Size of sample (g)

• Correction factor

MLS_C-BA-e-1330 57

9.2.2 Setting drying parameters

Operation Display

Press Menu-key; library opens Information:

The most recent program used is shown in P00 Press the arrow keys ( ), to select “Program No“

Press  -key; parameter options of program appear. Parameter selection is achieved with the help of the arrow keys ( )

1. Name

Press the -key; the current menu item blinks

How to enter the desired denomination: Press the   keys, to select the characters

Press the   keys, to select the digit on the left/right (relevant enabled digit flashes).

Confirm entry by pressing the PRINT-key and enter additional parameters as follows.

2. Profile

This is used to select a suitable heating program as well as to enter drying chamber temperature and drying time.

58 MLS_C-BA-e-1330

Press the arrow keys ( ), to select “Profile“ Press  -button Press the -key anew; the current menu item blinks Press the arrow keys ( ), to select among the

heating programs below plus the related parameters

• Standard

• Step-by-step

It is possible to increase the temperature step-bystep. The number and size of steps can be selected at will, see chpt. 11.8.

• Soft

Temperature is slowly increased. It is possible to adjust the lengths of the ramp, see chpt. 11.8

• Fast

Temperature is increased very quickly and for a short while exceeds the set temperature value. Afterwards the temperature is lowered to processing temperature and kept there until the end of the process, see chpt. 11.8

Confirm by pressing the PRINT key



The heating program is selected first, followed by the related parameters. (temperature/drying time)

Press the  -button; the cursor (►) marks the adjustable parameter

Press the - button anew and the current setting will flash

Press the arrow keys ( ), to carry out the desired setting

Confirm entry by pressing the PRINT-key and enter additional parameters as follows.

For the selection of "standard" or "fast" enter temperature afterwards

For the selection of “soft“ enter temperature and drying time afterwards

For the selection of “step-bystep” enter temperature and drying time for step “1” and “2” afterwards

MLS_C-BA-e-1330 59

3. Drying temperature

This is used to enter the drying temperature a second time. This setting overwrites the drying time entered under the menu item “Profile“.

Press the arrow keys ( ), to select the “Drying Temperature”

Press the  -key; currently set temperature flashes Press the arrow keys ( ), to enter the desired

temperature. Confirm entry by pressing the PRINT-key and enter

additional parameters as follows.

4. Finish/shutoff criterion This is used to select the criteria determining how drying is to be finished.

Automatic 1 Automatic 2 Automatic 3 Automatic 4

Automatic 5 Time defined Manual Defined/

Defined 2 Test

Shutoff for changes to w eig hi ng value < 1mg within 10s Shutoff for changes to w eig hi ng value < 1mg within 25s Shutoff for change of weighing value < 1mg within 60s. Shutoff for change of w eig hing value < 1mg within 90s. Shutoff for changes to w eig hi ng value < 1mg within 120s Adjustable from 1 min – 99h 59 min after pressing key Shutoff for changes to weighing value in set time, (∆m 0.1-9.9mg /

∆t max 2.55 min.) Shutoff for changes to w eig hi ng value < 1mg i n freely defined time

interval

60 MLS_C-BA-e-1330

Press the arrow keys ( ), to select “Shutoff“ Press the  -key for the current setting to appear Press the -key; the current menu item blinks Press the arrow keys ( ), to select desired shutoff

criterion. For further details, see chpt. 9.1.2 “Shutoff Criterion“.

Confirm entry by pressing the PRINT-key and enter additional parameters as follows.

5. Unit of measured result in display or printout (can be switched between %M, %D, %R, g)

Press the arrow keys ( ), to select “Result“ Press the  -button and the current setting will flash Press the arrow keys ( ), to select desired setting.

For further details see chpt. 9.1 . 2 “Uni t o f Meas ured Result“.

Confirm entry by pressing the PRINT-key and enter additional parameters as follows.

6. Output interval

This is used to set at which interval interim results are to be printed.

Press the arrow keys ( ), to select “Printout Time“ Press the  -button and the current setting will flash Press the arrow keys ( ), to select desired setting.

For further details see chpt. 9.1.2 “Output Interval“. Confirm entry by pressing the PRINT-key and enter

additional parameters as follows.

MLS_C-BA-e-1330 61

7. How to enter a target weight for a sample

The user can enter a target weight stating a tolerance range for the sample. This entry facilitates the application of identical sample sizes for each drying process.

Press the arrow keys ( ), to select “Sample“ Press the  -key for the current setting to appear Press the -key; the current menu item blinks Press the arrow keys ( ), to select among the

settings below

• None

Function disabled

• Optional

A message appears giving information whether the sample weight is within the entered tolerance limits. The drying process will be started even if the sample weight is beyond the defined toler ance limits.

• Obligatory

A message appears giving information whether the sample weight is within the entered tolerance limits. The drying process will only be started if the sample weight does not exceed the defined tolerance limits.

Confirm settings by pressing the PRINT key. After selecting optional or obligatory enter the target

weight and tolerance limits. Press the arrow keys ( ), to select the parameters Press the  -button and the current setting will flash Press the arrow keys ( ), to carry out the desired

setting Confirm entry by pressing the PRINT-key and enter

additional parameters as follows.

62 MLS_C-BA-e-1330

8. Determine and enter corrective factor

Certain materials emit more heat than is introduced from the outside. Dark substances for instance absorb heat and falsify measured results. In order to achieve an accurate measured result it is necessary to make a correction. Setting a corrective factor allows the user to correct differences between the set temperature of the moisture meter and the actually measured temperature on the specimen with the help of a temperature calibration set.

Determination of corrective factor:

● Carry out drying on sample

● Record measured result

● Carry out drying on second sample. For this purpose choose a sample amount

that is large enough to dip the measuring probe of the temperature calibration set into the sample.

● Record measured result of moisture meter und temperature calibration set.

● Determination of corrective factor according to the formula below:

T (measured) – T (set) Correction = --------------------------------------------- T (set)

Example: The measured temperature is 121°C, the set temperature is 110°C; from this follows a correction of 0.11.

Typical materials with high temperature emission:

Material Set temperature Measured

temperature

Correction factor

Flour

Coal dust

Damp tea leaves

Dry tea leaves

Cement

100°C 103.7°C 0.04 100°C 122°C 0.22 100°C 120.5°C 0.20 100°C 108.5°C 0.08 100°C 121°C 0.21

MLS_C-BA-e-1330 63

If the drying parameters are not reset to factory settings,

How to enter the determined corrective factor:

Press the arrow keys ( ), to select “Corrective Factor“

Press the  -button and the current setting will flash Press the arrow keys, to enter the determined corrective

factor Use the  , to select the digit

Press the   keys, to select the digit on the left/right (relevant enabled digit flashes).

Confirm setting by pressing the PRINT-key and enter additional parameters as follows.

9. Standard setting

This setting is used to set all drying parameters to factory settings.

Press the arrow keys ( ), to select “Standard“

Press the  -key; Query “Standard?“ appears

Confirm by pressing the PRINT-key; drying parameters are reset to factory settings.

The device returns to the menu.

press the ESC-key.

64 MLS_C-BA-e-1330

10. Printing drying parameters

If the device is connected to an optional printer the drying parameters settings can be printed out

Press the arrow keys ( ), to select “Print“

Press  -key; query “Print Program?“ appears

Confirm by pressing the PRINT-key, drying parameters are printed.

Example:

------- Program parameters ------

Program no. : 1

Name : FLOUR 100

Profile : Standard

Dry temp.

Switch off : Automatic 3

Result : Moisture content %M

Print int. : 30 s

Target : None

T. coeficient : 0.00

: 120 °C

----------------------------------------

The device returns to the menu. If the drying parameters are not printed press the ESC-

key.

MLS_C-BA-e-1330 65

9.2.3 How to save drying parameters

After all drying parameters have been set, press the ESC-key

The query “Save Program?“ appears

Confirm by pressing the PRINT-key; the dryi ng parameters of the program are saved.

The device returns to the program library.

If the drying parameters are not saved, press the

ESC-key.

9.2.4 How to invoke drying parameters / drying

When the program library (see chpt. 9.2.1) is enabled, invoke the desired drying program as follows.

Operation Display

Press Menu-key; program library appears

Press the arrow keys ( ), to select the desired drying program

Confirm by pressing the PRINT key. The device is ready to carry out drying according to

the invoked drying parameters

66 MLS_C-BA-e-1330

Press START/STOP-key

To help with stabilisation, close lid. Press the TARE-key; the device is ready for

weighing the initial sampling quantity

MLS_C-BA-e-1330 67

Place sample in sample dish

Close lid; the device is ready for measuring

Drying will start automatically after scales have settled.

You can read the processing parameters (target temperature, processing temperature, type of calculation etc.) on the displ ay.

68 MLS_C-BA-e-1330

---------------- Start drying----------------

To switch the display to the various units of the measured result, press the M-key.

When drying is finished, you will hear an acoustic signal and the heating will be shut off.

The display shows the measured result in the set unit.

Open lid and remove the sample with the help of the removal aid.

Caution: Sample dish and all parts of the sample chamber are hot!

Data output via RS 232 interface is achieved by pressing the PRINT-key:

Program no. : 1 Name : Floar 100 Profile : Standard Dry temp. : 120 °C Switch off : Automatical 3 Result : Moisture contents %M Printout int : 30 s Target : None T. coeficjent : 0.00

Start weight : 9.993 g

0:00:30 0.01 %M 0:01:00 0.02 %M 0:01:30 0.03 %M

Final mass : 9.990 g

Dry time : 0:01:45 Final result : 0.03 %M

--------End of drying procedure------

MLS_C-BA-e-1330 69

10 Storing measured results

The device is able to store the most recently carried out measurements (max. 100 measurements). In addition to the measured result, all drying parameters are also stored. When 100 measurements have been allocated to the memory the next measurement (101) will be saved under position 99. For this purpose the entire memory list is shifted up by one space.

In weighing mode press the M-key and the memory list will open

Press the arrow keys ( ), to select the desired measurement

Press the  -key; all parameters relev ant f or t his measur e m ent ar e di spl ayed

To print out this data, press the PRINT-key.

70 MLS_C-BA-e-1330

11 General information concerning moisture analysis

11.1 Application

In all cases where moisture is added to or removed from products, a fast determination of the moisture content is of enormous importance. For countless products the moisture content is not only a quality feature but also an important cost factor. Very often fixed limits for moisture content apply to the trade in industrial or agricultural goods as well as chemical or food products which are defined by terms of delivery and general standards.

11.2 Basics

Moisture does not only mean water but includes all substances that evaporate when heated up. In addition to water this includes,

- Fats

- Oils

- Alcohol

- Solvents

- etc...

There are various methods to analyse moisture in a product. KERN MLS uses a method called thermogravimetrics. In accord with this method, the sample is weighed before and after heating, determining the material moisture by looking at the difference. The conventional drying chamber method follows the same principle, with the exception that this method requires a considerably longer measuring period. . In accord with the drying chamber method, the sample is heated from the outside to the inside by a hot air current, so as to remove the moisture. The radiation applied in the KERN MLS penetrates mainly the sample in order to be transformed inside it into heat energy that is, warming from the inside to the outside. A minor amount of radiation is reflected by the sample, a reflection that is less in dark samples than in light-coloured ones. The depth of penetration of the radiation depends on the permeability of the sample. In samples of low permeability the radiation only penetrates the outer layers of the sample, possibly resulting in imperfect drying, incrustation or burning. For that reason the preparation of a sample is of great importance.

11.3 Adjustment to existing measuring method

Quite frequently the KERN MLS replaces a different drying method (such as a drying chamber) as the KERN MLS achieves shorter measuring times during a simplified operation. For that reason the conventional measuring method must be matched to the KERN MLS in order to achieve comparable results.

• Carry out parallel measurement Lower temperature setting for KERN MLS than drying chamber method

• Result of KERN MLS does not match reference

- Repeat measurement with changed temperature setting

- Vary shutoff criterion

11.4 Preparing a sample

Prepare one sample at a time for measuring. This prev ents t he sam pl e fro m exchanging moisture with its surroundings. If several samples have to be taken at

MLS_C-BA-e-1330 71

Preparing a sample from bulk material:

weight.

In this case special preparation of the sample is advisable, as drying, in particular the drying time, depends on the

the same time, they should be packed in airtight boxes so that they do not undergo changes during storage. To receive reproducible results, spread the sample thinly and evenly on a sample dish. Patchy spreads will produce inhomogeneous heat distribution in the sample to be dried resulting in incomplete drying and increased measuring time. Sample clusters generate increased heating of the upper layers resulting in combustion or incrustation. The high layer thickness or possibly arising incrustation makes it impossible for the moisture to escape from the sample. Due to this residual moisture, measured results calculated in this way will not be comprehensible or reproducible.

No special sample preparations are necessary for bulk materials.

Spread powdery or grainy samples evenly on the sample dish.

Coarse sample may need crushing (grind, crush using a mortar).

Preparing a sample from liquids:

This, too, does not require any special sample preparation. Spread glutinous or sticky samples thinly. It is advisable to

use glass fibre filters.

Weight loss caused by splashes can be prevented by covering the sample with a glass fibre filter. If using glass fibre filters, their wei g ht has to be deduc te d from the gross

Preparing a sample from solids:

surface as well as the thickness of the sample.

72 MLS_C-BA-e-1330

11.5 Sample material

Easy to determine are usually samples with the following characteristics:

- Grainy to powdery, pourable solids

- Thermally stable materials, emitting the moisture to be determined easily

without other substances evaporating at the same time

- Liquids that vaporize to leave a dry substance without developing a film

Difficult to determine may be samples that are:

- Glutinous or sticky

- Become incrusted easily or tend to form a film

- Decompose easily under the influence of heat or emit various elements

11.6 Sample size / originally weighted in quantity

Drying times, as well as achievable accuracy, are significantly influenced by sample distribution. In the course of this arise two opposed requirements: The lighter the originally weighted in quantity, the easier it is to achieve shorter drying times.

However, the heavier the originally weighted in quantity, the more accurate a result (example of a sample with ideal characteristics) will be achieved.

Poured

Reproducibility

quantity

0.5g 1g 2g

±0.6% ±0.3%

±0.15%

10g

±0.06% ±0.03%

MLS_C-BA-e-1330 73

11.7 Drying temperature

Bear in mind the following factors when setting the drying temperature:

Surface of the sample:

Compared with powdery or grainy samples, liquid and spreadable samples have a smaller surface for the transmission of heat energy. The use of a glass fibre filter improves the heat application.

Colour of sample:

Light-coloured samples reflect more heat radiation than dark ones and therefore require a higher drying temperature.

Availability of volatile substances:

The better and faster the water or other volatile substances can be disposed, the lower a drying temperature is required. If water is difficult to get to (e. g. in synthetics), it has to be calcined at high temperatures (the higher the temperature, the higher the water vapour pressure). Results equivalent to other moisture analysing methods (e. g. drying chamber) can be achieved by experimentally optimising the setting parameters such as temperature, heating level and shutoff criteria.

11.7.1 Drying temperatures above 160 °C (MLS 50-3HA250N only)

For measurements within a temperature range from 161°C – 250°C, the heating period is limited to 1 hour for up to 161°C and 20 minutes at 250°C. The maximum temperature of 250°C is kept for 20 minutes and afterwards lowered automatically within 20 minutes to 160°C (drying process is not interrupted).

74 MLS_C-BA-e-1330

Soft drying

Fast drying Step-by-step drying

11.8 Description of heating profiles

4 heating profiles are available, as follows:

• Standard

• Fast

• Soft

• Step-by-step drying

Standard drying

Standard drying is the most frequently used drying process. This type of heating method is suitable for the majority of substances.

The soft heating method is suitable for substances that are unable to tolerate a sudden rise in temperature applied by radiators. There are also those substances that form a film when warmed up quickly. This film will afterwards affect the evaporation of the enclosed moisture. For such substances, the soft mode of warming is equally suitable.

The fast heating profile is suitable for samples with a moisture content of 5% to15%. The temperature is increased very quickly and, for a short while, will exceed the set drying temperature. After that the temperature will be adjusted down to the set value. The sample must contain enough moisture.

Step-by-step drying is suitable for substances that display special behaviour during warming. The individual steps are freely selectable regards duration and temperature rising step. Sa mpl e s should have a moisture content of at least 15%.

MLS_C-BA-e-1330 75

11.9 Recommendations / Guidelines

Prepare standard sample:

- Crush sample, as required, and spread it evenly in the aluminium dish.

Prepare special samples:

- For sensitive or hard to spread test materials (e. g. mercury) a glass fibre filter

is available for use.

- Spread sample evenly on glass fibre filter and cover is with a second glass

fibre filter.

- The glass fibre filter is also useful as a protection when splashing materials

are dealt with (each splash falsifies the final result).

MATERIAL Specimen

weight

(g)

Drying

temperature

(º C)

Data query

interval

(s)

% moisture

% solid

Drying time

(min)

Dried piece

of apple

Moist apple 5-8 100 10 7.5 5-10

Butter 2-5 138 15 16.3 4.5

Mustard 2-3 130 20 76.4 10

Ground

coffee

Cornflakes 2-4 120 15 9.7 5-7

Yoghurt 2-3 110 15 86.5 4.5-6.5

Cocoa

powder

Margarine 3-4 138 20 16 10

Milk powder 2-4 90 15 5 6

Red wine 3-5 100 15 97.4 15-20

Sunflower oil 10-14 138 20 0.1 2

Sugar 4-5 138 15 11.9 10

Milk 2-3 120 15 88 6-8

Flour 8-10 130 10 12.5 4-5

5-8 100 10 76.5 10-15

2-3 106 5 2.8 4

2-3 106 20 0.1 2

Cement 8-12 138 15 0.8 4-5

Paper 2-4 106 20 6.4 10

You will find further examples taken from actual use in our application manual, available from the KERN home page (www.kern-sohn.com).

76 MLS_C-BA-e-1330

5 1

9 6

3 (TxD)

1 (RxD)

5 (GND)

3 (GND)

7 - 8 clench

2 (RxD)

3 (TxD)

2 (RxD)

5 (GND)

4 - 6 clench

7 - 8 clench

2 (RxD)

3 (TxD)

7 (GND)

5 (GND)

4 – 5 clench

7 - 8 clench

6 - 20 clench

2 (RxD)

12 Data output

Pin allocation of the balance output plug (front view):

Interface cable:

 Balance - printer

Pin 2: Receive data Pin 3: Transmit data Pin 5: Signal ground

 Balance – PC 9-pole

 Balance – PC 25-pole

MLS_C-BA-e-1330 77

12.1 Remote control instructions

Commands Function

R CR LF Reset to manufacturer setting - reset PC CR LF Command to call up the values of the balance S CR LF T ransfer of stable weighing values in standard weighing unit SI CR LF Transfer of instable weighing values in standard weighing unit SU CR LF Last stable measuring value SU CR LF Current measuring value Z CR LF Zeroing stable value ZI CR LF Zeroing instable value T CR LF Taring stable value TI CR LF Taring instable value C0 CR LF Cancel continuous data output C1 CR LF Start continuous data output NB CR LF Serial no. of balance FS CR LF Weighing range max. RV CR LF Software issue PD CR LF Date display PD CR LF Time display PMCR LF Operation mode PS CR LF Balance parameters are printed out B CR LF Tone A0 CR LF Auto zero off A1 CR LF Auto zero on

78 MLS_C-BA-e-1330

Before any maintenance appliance from the oper ati ng v ol tag e.

Sample dish

13 Service, maintenance, disposal

, cleaning and repair work disconnect the

13.1 Cleaning

Only carry out cleaning tasks when the equipment has cooled down.

Dish retainer

Removal aid

Windshield Draft protection base plate

Please do not use aggressive cleaning agents (solvents or similar agents), but a cloth dampened with mild soap suds. Ensure that no liquid penetrates into the device. Polish with a dry soft cloth. Loose residue sample/powder can be removed carefully with a brush or manual vacuum cleaner.

MLS_C-BA-e-1330 79

Temperature sensor

Clean temperature sensor

Clean the same way, as described above. Ensure the emitter is not touched or damaged in any way.

80 MLS_C-BA-e-1330

13.2 Change fuse

Disconnect equipm ent from power supply.

Swap fuse as shown in illustration.

13.3 Servicing, maintenance

 The appliance may only be opened by trained service technicians who are

authorized by KERN.

 Ensure that the balance is regularly calibrated, see chap. Monitoring of test

resources.

13.4 Disposal

 Disposal of packaging and appliance must be carried out by operator according

to valid national or regional law of the location where the appliance is used.

MLS_C-BA-e-1330 81

constantly / the stability display

14 Instant help

Fault Possible cause

Display is not lit up.

The display does not change when a sample is being loaded

The weight display changes does not appear.

Incorrect measuring re sul t

• The display unit is not switched on

• The mains supply connection has been

interrupted (mains cable not plugged in/faulty)

• Power supply interrupted

• Fuse has blown

• Sample dish / dish holder is fitted incorrectly.

• Sample dish has contact with wind protection

device or heated cover

• Draught/air movement

• Table/floor vibrations

• Electromagnetic fields / static charging (choose

different location/switch off interfering device if possible)

• Check adjustment

Measurement is taking too long

Measurement is not reproducible

Drying does not start

• No resetting to zero before loading the sample

• Incorrect shut-down criteria set

• Sample is not homogenous

• Drying time is too short

• Drying temperature too high (e.g. oxidation

sample material, boiling point of sample exceeded)

• Temperature sensor soiled or defective

• Heated cover open

• The mains supply connection has been

interrupted (mains cable not plugged in/faulty)

82 MLS_C-BA-e-1330

KERN & Sohn GmbH

D-72322 Balingen-

Tel: 0049-[0]7433- 9933-0

sohn.de

Konformitätserklärung

Wir erklären hiermit, dass das Produkt, auf das sich diese Erklärung bezieht, mit den nachstehenden Normen übereinstimmt.

Declaration of conformity

We hereby declare that the product to which this declaration refers conforms with the following standards.

Prohlášení o shode

Tímto prohlašujeme, že výrobek, kterého se toto prohlášení týká, je v souladu s níže uvedenými normami.

Declaración de conformidad

Manifestamos en la presente que el producto al que se refiere esta declaración está de acuerdo con las normas siguientes

Déclaration de conformité

Nous déclarons avec cela responsabilité que le produit, auquel se rapporte la présente déclaration, est conforme aux normes citées ci-après.

Dichiarazione di conformitá

Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si riferisce è conforme alle norme di seguito citate.

Conformiteitverklaring

Wij verklaren hiermede dat het product, waarop deze verklaring betrekking heeft, met de hierna vermelde normen overeenstemt.

Declaração de conformidade

Declaramos por meio da presente que o produto no qual se refere esta declaração, corresponde às normas seguintes.

Deklaracja

zgodności

Niniejszym oświadczamy, że produkt, którego niniejsze oświadczenie

dotyczy, jest zgodny z poniższymi normami.

RUS

Заявление о

соответствии

Мы заявляем, что продукт, к которому относится данная декларация,

соответствует перечисленным ниже нормам.

Signature

Datum

30.10.2013

Ort der Ausstellung

Place of issue

72336 Balingen

Albert Sauter KERN & Sohn GmbH

Geschäftsführer

Managing director

KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0 Fax +49-[0]7433/9933-149, E-Mail: info@kern-sohn.com, Internet: www.kern-sohn.com

15 Declaration of Conformity

Frommern Postfach 4052 E-Mail: info@kern-sohn.de

Fax: 0049-[0]7433-9933149 Internet: www.kern-

Declaration of Conformity

EG-Konformitätserklärung EC-Declaration of Conformity EC-

Déclaration de conformité EC-Declaración de Conformidad

EC-Dichiarazione di conformità EC-Conformiteitverklaring EC- Declaração de conformidade EC- Prohlášení o shode EC-Deklaracja zgodności EC-Заявление о соответствии

Electronic Balance: KERN MLS_C

EU Directive Standards

2004/108/EC EN 61326-1 : 2006 2006/95/EC EN 61010-1: 2010

EN 61010-2-010: 2003

Date

MLS_C-BA-e-1330 83

Signatur

KERN & SOHN MLS 50-3C User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Technical Data

1.1 Dimensions

2 Device overview

2.1 Keyboard overview

2.2 Display overview (during measurement)

3 Basic Information (General)

3.1 Proper use

3.2 Improper Use

3.3 Warranty

3.4 Monitoring of Test Resources

4 Basic Safety Precautions

4.1 Pay attention to the instructions in the Operation Manual

4.2 Personnel training

4.3 Danger Information

5 Transportation & Storage

5.1 Testing upon acceptance

5.2 Packaging / return transport

6 Unpacking, Setup and Commissioning

6.1 Installation Site, Location of Use

6.2 Unpacking and assembly

6.3 Scope of delivery

6.4 Mains connection

6.4.1 Switch on the unit

6.5 Connection of peripheral devices

6.6 Initial Commissioning

6.7 Operating the scales using PS keyboard

7 Menu

7.1 Navigation in the menu:

8 User menu

8.1 P1 Calibration (adjustment)

8.2 P2 GLP (Good laboratory practice)

8.2.1 P3 Date/time

8.2.2 P4 display

8.2.3 P5 RS-232

8.2.4 P6 output

8.2.4.1 Standard data output (0 standard)

8.2.4.2 User defined data output (1st printout ↔ 4th printout)

8.2.5 P7 General functions

9 Operator menu – moisture analysis

9.1 Moisture analysis without using the program library

9.1.1 Disabling the program library

9.1.2 Setting drying parameters

9.1.3 How to implement drying

9.2 Moisture analysis using the program library

9.2.1 Enabling of program library

9.2.2 Setting drying parameters

9.2.3 How to save drying parameters

9.2.4 How to invoke drying parameters / drying

10 Storing measured results

11 General information concerning moisture analysis

11.1 Application

11.2 Basics

11.3 Adjustment to existing measuring method

11.4 Preparing a sample

11.5 Sample material

11.6 Sample size / originally weighted in quantity

11.7 Drying temperature

11.8 Description of heating profiles

11.9 Recommendations / Guidelines

12 Data output

12.1 Remote control instructions

13 Service, maintenance, disposal

13.1 Cleaning

13.2 Change fuse

13.3 Servicing, maintenance

13.4 Disposal

14 Instant help

15 Declaration of Conformity