KERN PLT Operating Manual
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KERN PLT Operating Manual

Electronic precision balance
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Contents
1
Technical data _________________________________________________ 72
2
Declaration of conformity _______________________________________ 74
3
Appliance overview ____________________________________________ 76
4
Basic Information (General)______________________________________ 77
4.1
Proper use ______________________________________________________ 77
4.2
Improper Use ___________________________________________________ 77
4.3
Warranty _______________________________________________________ 77
4.4
Monitoring of Test Resources ______________________________________ 78
5
Basic Safety Precautions ________________________________________ 78
5.1
5.2
Personnel training _______________________________________________ 78
6
Transport and storage __________________________________________ 78
6.1
Testing upon acceptance _________________________________________ 78
6.2
Packaging ______________________________________________________ 78
7
Unpacking, Setup and Commissioning ____________________________ 79
7.1
Installation Site, Location of Use ___________________________________ 79
7.2
Unpacking ______________________________________________________ 79
7.2.1
Setup ______________________________________________________________ 80
7.2.2
Scope of delivery _____________________________________________________ 80
7.3
Mains connection ________________________________________________ 80
7.4
Connection of peripheral devices ___________________________________ 80
7.5
Initial Commissioning ____________________________________________ 80
KERN PLT
Version 1.0 12/2005
Operating Manual
Electronic Precision Balance

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  • Page 1: Table Of Contents

    KERN PLT Version 1.0 12/2005 Operating Manual Electronic Precision Balance Contents Technical data _________________________________________________ 72 Declaration of conformity _______________________________________ 74 Appliance overview ____________________________________________ 76 Basic Information (General)______________________________________ 77 Proper use ______________________________________________________ 77 Improper Use ___________________________________________________ 77 Warranty _______________________________________________________ 77 Monitoring of Test Resources ______________________________________ 78...
  • Page 2 10.2 Pin allocation of the balance output plug (front view) _________________ 135 10.3 Remote control instructions ______________________________________ 136 Service, maintenance, disposal ________________________________ 137 11.1 Cleaning ______________________________________________________ 137 11.2 Service, maintenance ____________________________________________ 137 11.3 Disposal_______________________________________________________ 137 Instant help ________________________________________________ 138 PLT-BA-defsi-0510...

  • Page 3: Technical Data

    1 Technical data KERN PLT 450-3M PLT 650-3M PLT 2000-3DM Readability (d) 0.001 g 0.001 g 0.001/0.01 g Weighing range (max) 450 g 650 g 200/2,000 g Minimum load 0.02 g 0.02 g 0.02 g Verification value 0.01 g 0.01 g 0.01/0.1 g...
  • Page 4 KERN PLT 2500-2M PLT 4500-2M Readability (d) 0.01 g 0.01 g Weighing range (max) 2,500 g 4,500 g Minimum load 0.5 g 0.5 g Verification value 0.1 g 0.1 g Verification class Reproducibility 0.02 g 0.02 g Linearity ± 0.02 g ±...

  • Page 5: Declaration Of Conformity

    Electronic Balance: KERN PLT Mark applied EU Directive Standards 89/336/EEC EMC EN45501 EN55022 73/23/EEC Low Voltage EN60950 Date: 22.12.2005 Signature: Gottl. KERN & Sohn GmbH Management Gottl. KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0,Fax +49-[0]7433/9933-149 PLT-BA-defsi-0510...
  • Page 6 EU Directive Standards EC-type-approval certificate no. Issued by 90/384/EEC EN 45501 T6843 90/384/EEC EN 45501 TCM 128/05-4315 (KERN PLT 2000-3DM) Date: 22.12.2005 Signature: Gottl. KERN & Sohn GmbH Management Gottl. KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-07433/9933-0,Fax +49-074433/9933-149 PLT-BA-defsi-0510...

  • Page 7: Appliance Overview

    3 Appliance overview Underfloor weighing device Air bubble Mod.: PLT 450-3M, PLT 650-3M, Mod.: PLT 2500-2M, PLT 4500-2M PLT 2000-3DM with glass windshield 1. Mains connection 2. PS/2 keyboard 3. RS 232 interface PLT-BA-defsi-0510...

  • Page 8: Basic Information (General)

    The balance may only be used according to the described conditions. Other areas of use must be released by KERN in writing. 4.3 Warranty Warranty claims shall be voided in case •...

  • Page 9: Monitoring Of Test Resources

    Infor- mation 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...

  • Page 10: Unpacking, Setup And Commissioning

    If electro-magnetic fields or static charge occur, or if the power supply is unstable major deviations on the display (incorrect weighing results) are possible. In that case, the location must be changed. 7.2 Unpacking Carefully remove the balance from the packaging, remove plastic cover and setup balance at the intended workstation. PLT-BA-defsi-0510...

  • Page 11: Setup

    Before connecting or disconnecting of additional devices (printer, PC) to the data in- terface, 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.

  • Page 12: User Menu

    05 Time display 1 on 06 Date display 1 on Display 01 Filter 3 normal 02 Med. Filter 1 enabled 03 Disp. refresh 1 0.08 s 04 Autozero 1 on 05 Last digit 1 always 06 Negative 0 disabled PLT-BA-defsi-0510...
  • Page 13 0 disabled 16 Custum Factor Modes 01 Parts Count 1 enabled 02 Checkweighing 1 enabled 03 Filling 1 enabled 04 Percent 1 enabled 05 Animal 1 enabled 06 Density 1 enabled 07 Formulation 1 enabled 08 Statistics 1 enabled PLT-BA-defsi-0510...
  • Page 14 5. Cursor ( ► ) shows the current menu item (e.g. P1). 6. Cursor ( ► ) shows the current set- ting (e.g. 06). 7. Status 8. Use the arrow key to modify the pa- rameter value, the active parameter blinks. PLT-BA-defsi-0510...

  • Page 15: User Principle Of The Menu Control

    (the respective active • Selection of the number position flashes) to be changed to the right (the respective ac- tive position flashes) • Cursor control downwards • Parameter selection within a function • Decreasing the value for selected numeral or number PLT-BA-defsi-0510...

  • Page 16: Operation Of The Balance With Ps/2-Keyboard

    The balance returns automatically into weighing mode. 27.01.05 Weighing 0.0000 100% 8.2 Operation of the balance with PS/2-keyboard Using a PS/2 keyboard will help you to enter numbers and texts faster and easier. Key allocation: Balance keyboard PS keyboard PLT-BA-defsi-0510...

  • Page 17: Menu Selection

    Use the cursor ( ► ) to select "01 Int. cal." ******** 04 Calibr. test fun c ti o n ******** 05 Weight. corr. 0 .0 06 Aut calibr. o ff Auto cal. time 1 1 h o u r Print report PLT-BA-defsi-0510...
  • Page 18 ******** 05 Weight. corr. 0 .0 With the arrow keys save your settings o ff 06 Aut calibr. Auto cal. time 1 1 h o u r Print report Print report deactivated Print report activated Confirm by pressing the PLT-BA-defsi-0510...
  • Page 19 The validity for verification of balances in Germany is e.g. 2 years. The legal regulation of the country where the balance is used must be observed! After verification the balance is sealed at the indicated positions. Verification of the balance is invalid without the "seal". PLT-BA-defsi-0510...
  • Page 20 Balances with obligation to verify must be taken out of operation if: The weighing result of the balance is outside the error limit. Therefore, in regular intervals load balance with known test weight (ca. 1/3 of the max. load) and compare with displayed value. The reverification deadline has been exceeded. PLT-BA-defsi-0510...

  • Page 21: P2 Glp (Good Laboratory Practice)

    Use the arrow keys to enter project name or 04 Date print 05 User print number (max. 8 characters) 06 P ojekt print o ff 07 Id print o ff Last Cal Print Confirm by pressing the All other settings (03 - 08) are executed PLT-BA-defsi-0510...
  • Page 22 : WL 041078 Cal. printout ---------------------------- 18.01.05 07:48 Automatic calibration Devi.: 0.003[5] g ----------------------------------- 10.429[0] g Example 2: Setting Printout Printout time Date: 22/10/2004 Printout date User: Miller User printout Balance no.: Project printout --------------------------------------- ID-printout 13.0521 g Cal. printout PLT-BA-defsi-0510...

  • Page 23: P3 Date/Time

    Time F u n c tio n ******** Date F u n c tio n ******** Disp. time 06 Disp. Date Use the button to choose between the following settings: 24 hours 12 hours (PM/AM) Confirm by pressing the PLT-BA-defsi-0510...
  • Page 24 F u n c tio n ******** Date F u n c tio n ******** Disp. time 06 Disp. Date Setup Setup 29.12.04 Year APRIL 2004 Press button All other settings are made in the same way as time (03 Time). PLT-BA-defsi-0510...

  • Page 25: P4 Readout

    Very quiet and stable environment: Balance works very fast but is more sensi- tive to external influences Busy environment: Balance works more slowly but is less sensitive to outside influences Confirm by pressing the PLT-BA-defsi-0510...
  • Page 26 0 d is a b le d Use the keys to select between the fol- lowing settings: 0 Deviations from the Zero display are automatically tared. 1 Deviations from the Zero display are auto- matically tared. Confirm by pressing the PLT-BA-defsi-0510...
  • Page 27 0 d is a b le d Press the key; the current menu item blinks Use the key to invert the colour settings 27.01.05 Weighing of the display 0.0000 100% 0 blocked 1 active Weighing 27.01.05 27.01.05 Wiegen 0.0000 100% Confirm by pressing the PLT-BA-defsi-0510...

  • Page 28: P5 Rs-232

    Continuous serial data out- steady Serial data output after a interval (dis- certain interval, defined in crete) parameter „07 Interval“ Unique autom. Data output for steady weighing value. at resting New output only after re- moving the weight and new loading PLT-BA-defsi-0510...
  • Page 29 08 Min. measuring value Definition of a minimum measuring value from which serial data output is executed 10000 d Press key, the current menu item blinks With the arrow keys (see chap. 8.1) save your settings Confirm by pressing the PLT-BA-defsi-0510...

  • Page 30: P6 Printouts

    Definition of the log header is executed in menu item “P2 GLP”. Examples. Date: 22/10/2004 Date: 22/10/2004 Time: 13.04.23 Time: 13.16.49 User: Mustermann User: Mustermann Project: XW/456 Project: XW/456 0.008 g Balance: 62.685 g * *: ? = instable measuring value PLT-BA-defsi-0510...
  • Page 31 2. Printout stop - 40 Text input: • Max. 640 characters • 80 lines • 8 characters per line After each line confirm your text input using the key. After completely entering the text use the key to confirm (see chapt. 8.1). PLT-BA-defsi-0510...
  • Page 32 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 output PLT-BA-defsi-0510...
  • Page 33 Dynamic weighing (animal weighing) Mean Value Liquid Density determination Method Temperature Density liquid Sinker Variable for statistics Number weighing processes Mean Value Sum of all measuring values Min value Max value Difference min and max value Standard Deviation Variance PLT-BA-defsi-0510...
  • Page 34 Text Parameter Nr. 20 string 10 21 string 11 22 string 12 23 string 13 24 string 14 25 string 15 Example 2: Kern & Sohn GmbH Date: Time: Weight: *****Signature:..*** Weighing with tolerance range *** Text Parameter Nr.

  • Page 35: P7 Units

    14 Tical 1 Weighing unit activated e na ble d 15 Custom 1 .0 16 Custom factor Use the key to confirm your selection Save (see chapter 8.1) 8.3.8 P8 Operating modes See Chapter 9.1 PLT-BA-defsi-0510...
  • Page 36 10 Program no. Balance parameters are printed out 11 Par. Printout Not documented 12 Par. receiving 13 Password Password protection protection Press the key; the current menu item blinks. Use the keys to activate/deactivate parameters Confirm your selection with the PLT-BA-defsi-0510...
  • Page 37 -button and the balance will be reset to zero. (Display [ → 0 ← ] ) Stability display: If the display shows the stability display [ ] the balance is in a stable status. If the status is instable the [ ] display disappears. PLT-BA-defsi-0510...
  • Page 38 • Parameter selection (cursor control up) • Increasing the value for selected numeral or number • Printout of the weighed value on an external appliance (printer or PC) • Confirm/save settings • Taring • Leave menu • Set weight display at zero PLT-BA-defsi-0510...

  • Page 39: Operating Modes (P8)

    All activated operating modes are now stored in a sub-menu (M0 - M8) and can be directly called up directly with the key: 20.02.05 Mode M0 Basic weighing M1 Parts counting M2 Checkweighing M3 Filling M4 Percent M5 Animal weighing M6 Density M7 Formulation M8 Statistics PLT-BA-defsi-0510...
  • Page 40 -key 20.02.05 Mode M0 Basic weighing M1 Parts counting M2 Checkweighing M3 Filling M4 Percent Cursor (►) to M0 Basic weighing M5 Animal weighing M6 Density M7 Formulation M8 Statistics 29.12.04 Weighing 13:47:32 0.0000 Press the or the -key PLT-BA-defsi-0510...

  • Page 41: Simple Weighing

    The taring process can be repeated any number of times, e.g. when adding several components for a mixture (adding). The limit is reached when the whole weighing range is exhausted. After removing the taring container the total weight is displayed as negative display. PLT-BA-defsi-0510...
  • Page 42 • Never suspend loads that exceed the stated maximum load (max) (danger of breaking) Always ensure that there are no persons, animals or objects that might be damaged underneath the load. NOTICE After completing the underfloor weighing the opening on the bottom of the balance must always be closed (dust protection). PLT-BA-defsi-0510...

  • Page 43: Counting

    07 Run 01 Reference weight – manual entering of the reference weight Press the key; the current menu item blinks. Use the arrow keys (see chapter 9.1) to enter the refer- ence weight for a unit. Confirm by pressing the PLT-BA-defsi-0510...
  • Page 44 Operate the key. The reference quantity is saved under "01 Unit weight". Press the key; the balance is now in parts counting mode counting all units on the weighing plate. PLT-BA-defsi-0510...
  • Page 45 The reference weight stored in menu item "01 Reference weight" can be saved in the data base as follows (max. 200 parameters): Use the cursor ( ► ) to select "03 Store sample" Press key; the sub-menu "03 Store sample" is dis- played. PLT-BA-defsi-0510...
  • Page 46 (yes). Set tolerance markers Confirm each with Parts counting setup M1 01 Unit weight 5.0000 By pressing the key you will return to the menu 02 Recall sample 03 Store sample 04 Checkweighting 05 Filling Statistics 07 Run PLT-BA-defsi-0510...
  • Page 47 Use the cursor ( ► ) to select “06 Statistics" Press button Press the key; the current menu item blinks Use the cursor ( ► ) to select menu item "03 Delete" Press button Confirm using the key; data will be deleted PLT-BA-defsi-0510...
  • Page 48 Use the cursor ( ► ) to select menu item "06 Statistics" Confirm by pressing the Use the cursor ( ► ) to select menu item "02 Results" Use the key to confirm; the display will show your statistical results. PLT-BA-defsi-0510...
  • Page 49 MAX – MIN Standard deviation SDV : 2 RDV : 52,7 % Variance Press button key will take you back to the menu 07 Run With parameter selection "M1 07 Run" (confirm with key) you will get directly into counting mode. PLT-BA-defsi-0510...
  • Page 50 ---------------------- 17 pcs User-defined data output Display Variable selection Data output 20.01.05 Zählen 90% 110% N=10 17/01/2004 APW=5.000 WGH=100.000 08:16:09 100% 11111111 MBA 0.01 Checking. Mustermann. Pieces 15 pcs 15.048 g 5.30000 g 0.00 16/01/2004 13:02 External calibration 0.01 PLT-BA-defsi-0510...

  • Page 51: Checkweighing (Weighing With Tolerance Range)

    Use the cursor ( ► ) to select „01 Lower limit or 02 Upper limit“ Press the key; the current menu item blinks. Use the arrow keys to enter limit values and confirm with the key. Notice: First enter upper limit. PLT-BA-defsi-0510...
  • Page 52 Put on goods to be weighed, tolerance control is started 03 Statistics - combination Checkweighing/Statistics Use the cursor ( ► ) to select “03 Statistics", All other steps are the same as for combination Parts counting /Statistics (Chapt. 9.1.2) PLT-BA-defsi-0510...

  • Page 53: Filling

    The balance is now in filling mode 02 Statistics - combination Filling/Statistics Use the cursor ( ► ) to select menu item "02 Statis- tics" All other steps are the same as for combination Parts counting /Statistics (Chapt. 9.1.2) PLT-BA-defsi-0510...

  • Page 54: Percent Weighing

    Use the arrow keys to enter reference weight and con- firm with the key. Press the key; the balance is now in percent de- termination mode. Now you can place the test objects onto the weighing plate; the percentage in regards to the reference ob- ject is displayed PLT-BA-defsi-0510...
  • Page 55 03 Check weighing 04 Filling 05 Statistics 06 Run Use the cursor ( ► ) to select menu item “03 - 06" All other steps are the same as for combination Parts counting /Statistics (Chapt. 9.1.2) PLT-BA-defsi-0510...

  • Page 56: Animal Weighing (Dynamic Weighing)

    Press the key; the current menu item blinks. Use the arrow keys to enter the sensitivity of the filter and con- firm with the key. (Insensitive,very busy setup location) Very slow slow standard fast (Sensitive,very quiet setup location) very fast PLT-BA-defsi-0510...
  • Page 57 Put goods to be weighed on weighing plate Dynamic weighing is started automatically. When weighing is complete the weight is shown in the display To start a new weighing cycle relieve the balance key will take you back to the menu PLT-BA-defsi-0510...

  • Page 58: Density Determination

    When weighing is complete the weight is shown in the display To start a new weighing cycle relieve the balance and press the key will take you back to the menu 9.1.7 Density determination Density determination of solids and liquids see operating manual "Density set". PLT-BA-defsi-0510...

  • Page 59: Formulation

    M5 Animal weighing M6 Density M7 Formulation 01 – 07 Parameter selection Formulation setup M7 01 Hints Auto. print Use the cursor ( ► ) to select menu items "01 - 07" Number of item Formula Formula printout Statis tics PLT-BA-defsi-0510...
  • Page 60 From here, you start adding on the various ingredients for a mixture: Producing a mixture according to a defined formula 20.01.05 Formulation Item W GH = .0000 90% 110% IC=0 SUM=0.0000 0.0000 If you are using a weighing container use the for taring 100% PLT-BA-defsi-0510...
  • Page 61 20.01.05 Formulation ingredient 1 is stored, the display shows the total of IC 1 SUM= 0.00 0.000 the saved ingredients (SUM), as well as the number of already poured ingredients (IC) 100% The weight display returns to zero. PLT-BA-defsi-0510...
  • Page 62 P2 06 Proj. Printout 1: yes 100% Balance no: :WL041055 P2 07 ID- printout 1: yes Last calibration: P2 08 Cal. printout 1: yes ---------------------- 16/01/2004 13:02 Automatic calibration Deviation: 0.0001 g ---------------------- 10,000 g 10,000 g 10,002 g ---------------------- 30,002 g PLT-BA-defsi-0510...

  • Page 63: Statistics

    9. Variance RDV.: (SDV / average) * 100%) 10. Weighing unit 11. Status bar Operation Display Call up menu item "M8 Statistics" (see chap. 9.1) Press button 01 – 08 Parameter selection Use the cursor ( ► ) to select menu items "01 - 08" PLT-BA-defsi-0510...
  • Page 64 SUM : 169,6880 g 33,9376 g Min : 0,0000 g MAX : 100,0012 g 100,0012 g SDV : 42,2166 g RDV : 124,4 % key will take you back to the menu PLT-BA-defsi-0510...
  • Page 65 SUM : 150.0304 g 50.0101 g 27.1.05 Statistik 50.0099 g SUM= 0.0 0 X= 0.0 0 MIN= 0.00 MAX= 0.0 0 D=0.0005 MAX : 50.0104 g 0.00 SDV=0.0003 RDV=0.1 0.0005 g 100% SDV : 0.0003 g RDV : 0.01 % PLT-BA-defsi-0510...

  • Page 66: Data Output

    Baud rate selectable at 2400, 4800, 9600 and 19200 Baud Miniature plug-in necessary (9 pole D-Sub) For operation with interface faultless operation is only ensured with the correct KERN – interface cable (max. 2m) 10.2 Pin allocation of the balance output plug (front view) Pin 2:...

  • Page 67: Remote Control Instructions

    Keytone on E1 CR LF Balance off O0 CR LF Balance on O1 CR LF Auto zero off A0 CR LF Auto zero on A1 CR LF Automatic adjustment off TC0 CR LF Automatic adjustment on TC1 CR LF PLT-BA-defsi-0510...

  • Page 68: Service, Maintenance, Disposal

    Spilled weighing goods must be removed immediately. 11.2 Service, maintenance The appliance may only be opened by trained service technicians who are authorized by KERN. Before opening, disconnect from power supply. 11.3 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.

  • Page 69: Instant Help

    • Adjustment is no longer correct. • Great fluctuations in temperature. • Electromagnetic fields / static charging (choose different location/switch off interfering device if possible) Should other error messages occur, switch balance off and then on again. If the error message remains inform manufacturer. PLT-BA-defsi-0510...

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