KERN MLS 50-3...N series Service Manual Download Page 13

Page: 13 / 16

7.3

Linearity correction (multi-stage)

Enter submenu

P0 Factory

Set index next to parameter

P0 16

and press the

button

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…N-SH-e-0812

Summary of Contents for MLS 50-3...N series

Page 1: ...lei 1 D 72336 Balingen Frommern E Mail info kern sohn com Tel 0049 0 7433 9933 0 Fax 0049 0 7433 9933 149 Internet www kern sohn com GB Service Manual Electronic Moisture Analyzer Page 2 KERN MLS 50 3 N Version 1 2 10 2008 ...

Page 2: ...ription of factory parameters 7 5 Factory Calibration 9 6 Temperature Calibration 10 7 Linearity Correction 11 7 1 Linearity correction single stage 11 7 2 Parabolic linearity correction 12 7 3 Linearity correction multi stage 13 7 4 Changing linearity factors 14 8 Off Center Load Adjustment 15 9 Printout of Factory Parameters 16 2 MLS N SH e 0812 ...

Page 3: ...rying process Start Stop drying Cancel an entry Leave menu Arrow keys for navigation in menu Change the value of a parameter Data export to external device Confirm save settings Tara key scales zero digits Invoke user menu drying parameter setting Invoke user menu MLS N SH e 0812 3 ...

Page 4: ... Linearity error Linearity correction Mechanical damage 9 No communication between balance and PC Wrong parameter Check connection RS 232 to PC Wrong interface cable 10 Time and date does not work Check voltage TTL 2 Hz 0 5V DC on measuring point SQW Problem on main board Batteries are damaged 11 Display shows program number no function Quartz does not work Processor damage Check tension RST reset...

Page 5: ...ge Result 10 Max 2 7 Result 10 Result 4 Max 2 8 Load on weighing plate too heavy Difference 1 Max 2 9 Difference between cal weight stored current cal weight 1 Sample mass 20 mg 2 10 Sample 20 mg Sample mass above the range 2 11 Sample out of set range Above the range 3 1 Value of parameter outside Faulty value 3 2 Value of parameter outside Incorrect password 3 4 Wrong password Error of notice 4 ...

Page 6: ... are parameters needed to start settings and regulations 4 1 How to enter the service menu Open the housing and set jumper JP1 on main board 172xxx PCB to access the service menu Plug the balance into the power outlet and enter service menu 6 MLS N SH e 0812 ...

Page 7: ... 0d Normal 12 3 0 d P0 07 Autozero delay Time of autozero possibility to change value from 0 2s to 3 0s Normal 6 2 0 s P0 08 Stable range Stable range of measuring results possibility to change value from 0 1d to 10 0d Normal 11 2 0 d P0 09 Stable speed Time to define stable measuring results possibility to change value from 0 2s to 3 0s Normal 6 2 0 s P0 10 Filter range Digital filter possibility...

Page 8: ...mperature compensation after filtering 2 nd temperature point P0 32 2 nd point T Second temperature correction set by 28 C P0 33 Temp Z factor Temperature compensation factor of zero P0 34 Temp S factor Temperature compensation factor of sensitivity P0 35 Lin points Lin value 1 Lin factor 1 Lin value 2 Lin factor 2 Lin value 3 Lin factor 3 P0 64 Lin value 15 P0 65 Lin factor 15 P0 66 Lin value 16 ...

Page 9: ... moisture analyzer 0 Halogen 1 IR P0 75 Cor factor T Service parameter for characteristic of drying chamber thermometer 5 Factory Calibration Enter submenu P0 Factory and press key to start factory calibration P0 14 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 N SH e 0812 9 ...

Page 10: ...red by using the arrow keys Ð Ï 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 To import the temperature values press the PRINT key temperature calibration for the second point will be started Setup 29 01 08 Setup Temperature calibration 2 point 14 59 Temper...

Page 11: ...e Enter submenu P0 Factory Set index next to parameter P0 16 and press the Î button 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 N SH e 0812 11 ...

Page 12: ...nu P0 Factory Set index next to parameter P0 16 and press the Î button 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 12 MLS N SH e 0812 ...

Page 13: ...enu P0 Factory Set index next to parameter P0 16 and press the Î button 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 N SH e 0812 13 ...

Page 14: ...ence to the factor Æ changing in the factory menu service menu parameters P0 37 until P0 67 E g weight mass 40g Æ reading 40 007 stored linearity factor at 40g Æ 0 001 input new linearity factor at 40g Æ 0 008 weight mass 40g Æ reading 39 995 stored linearity factor at 40g Æ 0 001 input new linearity factor at 40g Æ 0 004 5 After inscribing correction you should do calibration again 6 Check balanc...

Page 15: ... load at the centre than at the left rear right and front side of the pan of the way out from the centre The readings should agree within 5mg Using the attached figure It is necessary to change the screws to make the readings of the weight equal as it is moved around the pan Recheck corner load after 1 hour again MLS N SH e 0812 15 ...

Page 16: ...FF key main switch to turn on the balance Enter main menu Set index next to parameter P7 Globals P1 alibration P2 GLP P3 D P5 RS 232 P6 P7 C ate Time P4 Redout Printouts Globals Setup 29 12 04 Enter menu P7 Globals Enter submenu P7 09 Par printout To get a printout of the factory parameters P0 01 to P0 75 set Start 0 01 Stop 0 75 Confirm your setup with PRINT Press PRINT to start the printout 16 M...

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KERN MLS 50-3...N series, Service Manual

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