KERN  PFB Operating Manual

KERN PFB Operating Manual

Precision balance
Table of Contents

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Operating Manual
Precision balance
KERN PFB
Version 2.2
02/2013
GB
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-mail:
info@kern-sohn.com
Tel.: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet:
www.kern-sohn.com
PFB-BA-e-1322

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Summary of Contents for KERN KERN PFB

  • Page 1 KERN & Sohn GmbH Ziegelei 1 Tel.: +49-[0]7433- 9933-0 D-72336 Balingen Fax: +49-[0]7433-9933-149 E-mail: Internet: info@kern-sohn.com www.kern-sohn.com Operating Manual Precision balance KERN PFB Version 2.2 02/2013 PFB-BA-e-1322...
  • Page 2: Table Of Contents

    KERN PFB Version 2.2 02/2013 Operating Manual Precision balance Table of Contents Technical Data ....................4 Declaration of conformity ................. 8 Basic Information (General) ................9 Proper use ..........................9 Improper Use ..........................9 Warranty ............................. 9 Monitoring of Test Resources....................10 Basic Safety Precautions ................
  • Page 3 Operation ......................27 Simple weighing ........................27 8.1.1 Non-verifiable models ....................... 27 8.1.2 Models PFB-M .......................... 27 Taring ............................28 8.2.1 Non-verifiable models ....................... 28 8.2.2 Models PFB-M .......................... 29 Parts counting ........................... 30 8.3.1 Non-verifiable models ....................... 30 8.3.2 Models PFB-M ..........................
  • Page 4: Technical Data

    1 Technical Data KERN PFB 120-3 PFB 200-3 PFB 300-3 PFB 1200-2 Readability (d) 0.001 g 0.001 g 0.001 g 0.01 g Weighing range (max) 120 g 200 g 300 g 1200 g Reproducibility 0.001 g 0.001 g 0.001g 0.01 g Linearity ±0.003 g ±0.003 g...
  • Page 5 KERN PFB 2000-2 PFB 3000-2 PFB 6000-1 PFB 6K0.05 Readability (d) 0.01 g 0.01 g 0.1 g 0.05 g Weighing range (max) 2000 g 3000 g 6000 g 6000 g Reproducibility 0.01 g 0.01 g 0.1 g 0.05 g Linearity ±0.03 g ±0.03 g ±...
  • Page 6 KERN PFB 600-1M PFB 600-2M Readability (d) 0.1 g 0.01 g Weighing range (max) 600 g 600 g Reproducibility 0.1 g 0.01 g Linearity ± 0.1 g ± 0.02 g Verification value (e) 100 mg 100 mg Verification class Minimum load (Min) 500 mg Smallest part weight for 20 mg...
  • Page 7 KERN PFB 6000-0M PFB 6000-1M Readability (d) 0.1 g Weighing range (max) 6000 g 6000 g Reproducibility 0.1 g Linearity ± 1 g ± 0.3 g Verification value (e) Verification class Minimum load (Min) 50 g Smallest part weight for 200 mg 200 mg parts counting...
  • Page 8: Declaration Of Conformity

    Niniejszym oświadczamy, że produkt, którego niniejsze oświadczenie dotyczy, zgodności jest zgodny z poniższymi normami. Заявление о Мы заявляем, что продукт, к которому относится данная декларация, соответствии соответствует перечисленным ниже нормам. Electronic Balance: KERN PFB Mark applied EU Directive Standards 2004/108/EC EN 61000-6-1 :2007 EN 61000-6-3 :2007...
  • Page 9: Basic Information (General)

    3 Basic Information (General) 3.1 Proper use The balance you purchased is intended to determine the weighing value of material to be weighed. It is intended to be used as a “non-automatic“ balance, i.e. the material to be weighed is manually and carefully placed in the centre of the weighing plate.
  • Page 10: Monitoring Of Test Resources

    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.
  • Page 11: Unpacking, Setup And Commissioning

    6 Unpacking, Setup and Commissioning 6.1 Installation Site, Location of Use The balances are designed in a way that reliable weighing results are achieved in common conditions of use. You will work accurately and fast, if you select the right location for your balance. Therefore, observe the following for the installation site: Place the balance on a firm, level surface;...
  • Page 12: Placing/ Remove The Transportation Lock

    6.2.1 Placing/ Remove the transportation lock The balance must be installed in a way that the weighing plate is exactly in horizontal position. Remove the transportation lock [ 1 ] (PFB 120-3, PFB 200-3, PFB 300-3): 6.2.2 Scope of delivery Serial accessories: Balance Weighing plate...
  • Page 13: Initial Commissioning

    6.5 Initial Commissioning In order to obtain exact results with the electronic balances, your balance 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).
  • Page 14: Procedure When Adjusting (Non-Verifiable Models)

    6.7.1 Procedure when adjusting (non-verifiable models): Observe stable environmental conditions. A warming up time (see chapter 1; Technical Data) is required for stabilization. Ensure that there are no objects on the weighing plate. Balance display Operation  In weighing mode press approx.
  • Page 15: Adjustment Procedure (Models Pfb-M)

    6.7.2 Adjustment procedure (models PFB-M): Observe stable environmental conditions. A warming up time (see chapter 1; Technical Data) is required for stabilization. Ensure that there are no objects on the weighing plate. Balance display Operation  Start balance by pressing During the selftest press „F1 Unt“...
  • Page 16: Linearization

    „Pass“ appears, the adjustment process has been finished successfully.  Remove adjusting weight during selftest Wait until the balance is again in weighing mode. 6.8 Linearization Linearity shows the greatest deviation of a weight display on the scale to the value of the respective test weight according to plus and minus over the entire weighing range.
  • Page 17: Linearization Non-Verifiable Models (Low Resolution)

    6.8.1 Linearization non-verifiable models (low resolution) Balance display Operation  Start balance by pressing Whilst the balance carries out a self test, press until „F1 Unt“ appears  Press repeatedly until “tECH“ appears  Press , „Pin“ appears  Press successively, „P1 Lin“...
  • Page 18  Put on weight 1 (see table chap. 6.8.1)  Wait for the stability display and the signal sound  „LoAd 2“ appears  Remove weight 1 and put on the weight 2  After the stability display and the signal sound „LoAd 3“...
  • Page 19: Linearization Of Non Verifiable Models (Low Resolution) And Verifiable Models

    6.8.2 Linearization of non verifiable models (low resolution) and verifiable models Balance display Operation  Start balance by pressing . While the balance carries out a self test, press until „F1 Unt“ appears  Press repeatedly until “tECH“ appears In case of verifiable models press the adjustment switch on the lower side of the balance! ...
  • Page 20: Table Linearization Points

    6.8.3 Table Linearization points Non-verifiable models: Weight 1 Weight 2 Weight 3 Weight 4 30 g 60 g 90 g 120 g 120 g 50 g 100 g 150 g 200 g 200 g 50 g 100 g 200 g 300 g 300 g 300 g...
  • Page 21: Verification

    6.9 Verification General introduction: According to EU directive 90/384/EEC or 2009/23EG balances must be officially verified if they are used as follows (legally controlled area): a) For commercial transactions if the price of goods is determined by weighing. b) For the production of medicines in pharmacies as well as for analyses in the medical and pharmaceutical laboratory.
  • Page 22 Position of seals and adjusting switch: 1. Adjustment switch 2. Plastic disk to cover the adjustment switch 3. Self-destroying seal mark 4. Self-destroying seal mark PFB-BA-e-1322...
  • Page 23: Operation With Second Display Unit Pfb-A08 For Open Points Of Sale

    6.10 Operation with second display unit PFB-A08 for open points of sale For the use in open points of sale, operation with a second display unit is required. In the models PFB 600-1M and PFB 6000-0M this (PFB-A08) is already existing. The second display unit is exclusively suitable for the connection to KERN balances.
  • Page 24 Switch off Sale mode: Setting „SALE n“ = 6000 e or 60000 d The totalizing function is available The weighing units gram and carat are available  Start balance by pressing . While the balance carries out a self test, press until „F1 Unt“...
  • Page 25: Controls

    7 Controls 7.1 Keyboard overview Buttons specification: Designation Pressed once and released  Turn on/off [ON/OFF]  Set weight display at zero [ZERO]  Activate the current element in the menu  Select in Weighing units (menu F UNIT): change to the next unit ...
  • Page 26: Overview Of Display

    7.2 Overview of display Display Description Gram Kilogram Zeroing display Taring Stability display ο Display for parts counting Percent weighing display Display for tolerance weighing Momme (mom) Display for adjustment. Signals the adjustment function Bar graph g (Gramm) (ct) Carat (oz) Ounce (ozt) Fine ounce Weight unit...
  • Page 27: Simple Weighing

    8 Operation 8.1 Simple weighing 8.1.1 Non-verifiable models Balance display Operation  Start balance by pressing The balance will carry out a self-test. Wait for „0.0“ display  Should the balance not display exactly „0.0“ despite empty scale pan, press the button.
  • Page 28: Taring

    8.2 Taring The dead weight of any weighing container may be tared away by pressing a button, so that the following weighings show the net weight of the goods to be weighed. 8.2.1 Non-verifiable models Balance display Operation  Deposit weighing receptacles. The weight of the container is displayed.
  • Page 29: Models Pfb-M

    8.2.2 Models PFB-M Balance display Operation  Put on weighing container. The weight of the container is displayed. (example)  Press , the zero display appears. The pictogram NET is displayed. The pictogram goes out. The weight of the container is now internally saved. ...
  • Page 30: Parts Counting

    8.3 Parts counting Before the balance can count parts, it must know the average part weight (i.e. reference). Proceed by putting on a certain number of the parts to be counted. The balance determines the total weight and divides it by the number of parts (the so- called reference quantity).
  • Page 31: Models Pfb-M

    8.3.2 Models PFB-M Balance display Operation  Start balance by pressing The balance will carry out a self-test. Wait for „0.0“ display.  Press Appears the reference quantity „10“ By pressing the key several times, the reference quantities 10, 20, 50, 100, 200 can be set. ...
  • Page 32: Adding

    8.4 Adding It is useful, when a mixture of various components is weighed in a tare container and finally for control purposes the sum weight of all weighed components is required. 8.4.1 Non-verifiable models Balance display Operation  Start balance by pressing Whilst the balance is carrying out a selftest, press .
  • Page 33: Models Pfb -M

    Then appears for 2 seconds the weight of both test items, before the weight of the second test item will appear again. With the further samples proceed as described above. In order to display the total weight of the samples, remove weight from the weighing plate, wait for the zero display and press .
  • Page 34  Press , „ACC 2“ is shortly displayed, then appears shortly the total weight and then the weight  of the second sample which now is also stored.  With the further samples proceed as described above. In order to display the total weight of the samples, remove weight from the weighing plate, wait for the zero display and press .
  • Page 35: Percent Weighings

    8.5 Percent weighings Percent weighing allows to display weight in percent, in relation to a reference weight. Percent weighing allows to display weight in percent, in relation to a reference weight. 8.5.1 Non-verifiable models Balance display Operation  Start balance by pressing The balance will carry out a self-test.
  • Page 36: Models Pfb-M

    8.5.2 Models PFB-M Balance display Operation  Start balance by pressing The balance will carry out a self-test. Wait for the „0.0 g“ display.  Put a reference weight on the weighing plate, which corresponds to 100%  Press In the display appears „100.00%“ (example) ...
  • Page 37: The Menu

    9 The menu 9.1 Menu map In the menu can be made 8 different settings and the adjustment. 9.2 Call up menu The menu is called-up by pressing the key, while the balance is carrying out the self test. In the display appears the message „F1 UNT“ 9.3 Navigation in the menu Direction in the Description...
  • Page 38 RS -232 interface S 232: P Prt: connect with printer  b XXXX: Baud rate can be selected between 9600, 600, 1200, 2400, 4800 LP-50: not documented  EnG: Selection of Language English Chi: Selection of Language Chinese tP: Standard printer setting ...
  • Page 39: Menu Overview Models Pfb-M

    9.5 Menu overview models PFB-M Balance display Operation Not available Background lighting on/automatic/off EL on: background lighting on EL Au: background lighting switches on automatically EL off: background lighting off RS -232 interface S 232: P Prt: connect with printer b XXXX: Baud rate can be selected ...
  • Page 40 P1 Lin Linearization (see chap. 6.8) P2 CAL P3 Cont P4 AZn Not documented P5 GrA P6 CAP P7 SPd P8 5-t Multi-Tare function: St on: Multi-Tare ON St oFF: Multi-Tare OFF PFB-BA-e-1322...
  • Page 41: Menu Settings

    9.6 Menu settings 9.6.1 Switch over weighing units (Unit) (only non-verifiable appliances) The weighing units are switched on or off via the menu. Activate function: Balance display Operation  Start balance by pressing As long as the balance carries out a self test, press „F1 Unt“...
  • Page 42: Display Background Illumination

    9.6.2 Display background illumination In the menu the display background illumination can be switched on or off. To achieve this, follow the sequence of operations below: Balance display Operation  Start balance by pressing As long as the balance carries out a self test, press (models PFB-M) „F1 Unt“...
  • Page 43: Multi-Tare Function (Only Models Pfb-M)

    9.6.3 Multi-Tare function (only models PFB-M) The balance can be tared several times successively. For that make in the menu the following setting: Balance display Operation  Start balance by pressing While the balance carries out a self test, press „F1 Unt“...
  • Page 44: Data Output Rs232

    10 Data output RS232 You can print out weighing data via the RS 232C interface. The following conditions must be met to provide successful communication between the weighing balance and the printer. Use a suitable cable to connect the weighing balance to the interface of the printer.
  • Page 45: Printer Operation - Printout Examples

    10.3 Printer operation - printout examples Standard printout “weighing data“ 8.65 g Gross weight Printout parts counting PCS: 10 pcs Reference quantity 0.861 g Individual weight 8.61 g Gross weight Printout adding 35.07 g N First weighing 8.62 g N Second weighing 8.00 g N Third weighing...
  • Page 46: Continuous Data Output

    10.4 Continuous data output CR LF Header 1 Header 2 Weighing data Weighing unit Final character Head line 1: ST=stable, US=instable Head line 2: NT=net, GS=gross 10.5 Remote control instructions The remote control commands are sent from the remote control unit to the balance as ASCII code.
  • Page 47: Service, Maintenance, Disposal

    12 Service, maintenance, disposal 12.1 Cleaning Before cleaning, please disconnect the appliance from the operating voltage. 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 and wipe with a dry soft cloth.
  • Page 48: Instant Help

    13 Instant help In case of an error in the program process, briefly turn off the balance and disconnect from power supply. The weighing process must then be restarted from the beginning. Help: Fault Possible cause The displayed weight does The balance is not switched on.

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