KERN PES/PEJ Version 1.9 2023-05 Operating instructions Precision balance Contents Technical data ....................4 Declaration of conformity ................7 Appliance overview ..................8 Components ..........................8 Operating elements ........................ 10 Keyboard overview ......................... 11 3.3.1 Numeric entry ........................... 12 Display ............................. 13 Basic Information (General) ................
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Percent weighing ..................34 Density determination ................. 37 12.1 Density Table for liquids ......................41 12.2 Data output of the specific density to a printer ..............42 Weighing with tolerance range ..............43 13.1 Selection of weighing function with tolerance range ............44 13.2 Set distinction condition......................
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19.4 Formats of the data output (special format 1) ..............77 19.4.1 Data composition ......................... 77 19.4.2 Data description ........................77 19.4.3 Error messages ........................78 19.5 Formats of the data output (special format 2) ..............79 19.5.1 Data composition ......................... 79 19.5.2 Data description ........................
1 Technical data KERN PES 620-3M PES 2200-2M PES 4200-2M Item no./ Type TPES 620-3-B TPES 2200-2-B TPES 4200-2-B Readability (d) 0.001 g 0.01 g 0.01 g Weighing range (max) 620 g 2200 g 4200 g Reproducibility 0.001 g 0.01 g 0.01 g...
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KERN PES 6200-2M PES 15000-1M PES 31000-1M Item no./ Type TPES 6200-2-B TPES 15000-1-B TPES 31000-1-B Readability (d) 0.01 g 0.1 g 0.1 g Weighing range (max) 6.2 kg 15 kg 31 kg Reproducibility 0.01 g 0.1 g 0.1 g Linearity 0.03 g...
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KERN PEJ 620-3M PEJ 2200-2M PEJ 4200-2M Item no./ Type TPEJ 620-3M-B TPEJ 2200-2M-B TPEJ 4200-2M-B Readability (d) 0.001 g 0.01 g 0.01 g Weighing range (max) 620 g 2200 g 4200 g Reproducibility 0.001 g 0.01 g 0.01 g Linearity 0.003 g...
** Smallest part weight at piece counting - under normal conditions: ➢ There are unsteady ambient conditions (draft, vibrations) ➢ The counted parts are varying 2 Declaration of conformity The current EC/EU Conformity declaration can be found online in: www.kern-sohn.com/ce TPES-B_TPEJ-B-BA-e-2319...
3.3 Keyboard overview Button Name Function in Operating mode Function in Menu ➢ Turn on/off [ON/OFF] ➢ Transmit weighing data via ➢ Cancel setting interface [PRINT] ➢ Start adjustment or [CAL] adjustment test ➢ Adding (when function was ➢ Take over setting and close enabled;...
Designation Description Illuminated green, if the balance is operated with STAND BY mains voltage, but being switched off. SLEEP Illuminated red, when the balance is in sleep mode. 3.3.1 Numeric entry As maximum, the balance can display eight characters Button Function Cancel input Save input and exit...
3.4 Display Display Designation Description Shows in which tolerance "Tolerance range weighing" range the weighing result can indicator be found Indicates that weight value Asterisk can be added Is displayed when the weight Stability display value is stable Minus Displays negative values Indicates that the balance is Indicator "Process"...
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Display Designation Description Display gross weight value Displays gross weight Shown when the tare weight Display net weight value has been subtracted Shown when the total sum is Σ "Total" indicator displayed Indicator Appears in some functions Shown when piece counting “Piece counting”...
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.
5.1 Pay attention to the instructions in the Operation Manual Carefully read this operation manual before setup and commissioning, even if you are already familiar with KERN balances. 5.2 Personnel training The appliance may only be operated and maintained by trained staff.
7 Unpacking, Installation and Commissioning 7.1 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. On the installation site observe the following: •...
7.2 Unpacking and check Remove the appliance and the accessories from the package, set aside the packaging material and install the appliance on the working place. Check if all parts of the scope of delivery are present and free of damage. Scope of delivery: Content Models up to 620 g...
7.3 Assembling, Installation and Levelling The correct implantation site is important for the accuracy of the weighing results of high-resolving precision balances (see chap. 7.1). 7.3.1 Implantation of the balance 1. Place the weighing plate support of the balance (in PES 31000-1M the weighing plate support is pre-installed) 2.
7.3.2 Installation of the wind shield 1. Plug the long side parts from above onto the short side parts. Ensure that the sides point upwards with their flat guidance. 2. Plug-on the upper part. 3. Place the wind shield over the weighing plate. TPES-B_TPEJ-B-BA-e-2319...
Check, whether the voltage acceptance on the scales is set correctly. The balance may only be connected to the power supply, when the data on the balance (sticker) and the local mains voltage are identical. Only use KERN original mains adapters. Using other makes requires consent by KERN. Important: ➢...
Before connecting or disconnecting the auxiliary equipment (printer, PC) to the data interface, the balance must be disconnected from mains without fail! With your balance, only use accessories and peripheral devices by KERN, as they are ideally tuned to your balance.
8 Menu 8.1 Menu <Func> Open menu: Press and hold the [F]- key for about 2 seconds. Display changes to <Func>. Release [F]- key If you continue keeping the [F] key pressed after the appearance of <Func>, the balance will change into another mode. In this case press the [PRINT] key to interrupt the action.
First menu level Settings Chapter ISO/GLP/GMP compliant data 19.10.1 output Display format of the date 15.6.1 Edition of the time stamp 19.10.2 Automatic switch-on function 15.7 8.2 Enhanced menu <Func2> Open menu: Press [F]- key and [TARE/ZERO] key simultaneously for about 2 seconds. ...
8.3 Navigation in the menu Button Designation Description Open menu (press and hold for about 2 seconds) Next menu level (press shortly) Close menu [PRINT] Cancel input [] Next menu level [] Previous menu level [] Setting selection upwards [] Select setting downwards [TARE/ZERO] Switch through setting selection...
9 Basic Operation 9.1 Turn on/off • After switching on, the balance always starts with the last weighing application that was used before switching off. • The weighing system PEJ carries out an internal adjustment when having been disconnected from mains before switching-on Start-up: ...
Switching off: When the balance is switched-on, press the [ON/OFF] key The balance display turns off STAND BY-LED lighting 9.2 Zeroing When after pressing the [TARE/ZERO] key <Net> appears on the display, taring has been carried out instead of zeroing. For more information on taring, see chapter 9.3.
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Place an empty weighing container on the weighing plate The weight of the weighing container is shown Press the [TARE/ZERO] key The balance tares The display shows the value <0.0 g> and the zero display <Net>. ...
9.4 Selection of a weighing application Press and hold the [F] key for about 2 seconds. Display changes to <Func>. Release [F] key keys [] [] [TARE/ZERO] key) to select the desired weighing application 1. SEt „1“. Simple weighing 1.
Further displays: Press the [F] key to switch the display on the balance. The display depends on the active weighing application and the enabled auxiliary functions. Display Display Display on balance sequence Net weight value (unit A) Net (if tared) Gross weight value (unit A) Net weight value (unit B) Net (if tared)
10 Piece counting The piece counting application allows you to count several pieces placed on the weighing plate. Before the balance is able to count pieces, it must know the average piece weight, the so-called reference. For this purpose a certain number of the pieces to count must be put on the plate.
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Place the number of parts on the weighing plate weighing container according entered reference quantity Press the [F] key to save the weight value of the reference quantity The reference quantity on the display starts flashing Put more reference pieces (quantity must be twice of the reference quantity selected at the beginning →...
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When the balance displays <Add>, <Sub> or <L-Err>: • <Add>: Insufficient quantity of additional samples. Add more samples. • <Sub>: Number of extra samples is too large. Decrease the sample. • <L-Err>: The average piece weight is smaller than the smallest piece weight Further displays: Press the [F] key to switch the display on the balance.
11 Percent weighing The application Percent weighing allows to check the weight of a sample in percent, referred to a reference weight. • If you use a weighing container, it should be tared before setting the reference quantity (see chap. 9.3) •...
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Display changes to <P. SEt> Release [F] key The last reference weight set flashes on the display Actual value setting method: Place reference weight on the weighing plate or into the weighing container Press [F] key ...
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Numerical input of reference weight: Press the [TARE/ZERO] key <0 g> flashes on the display Enter reference weight (numeric entry: see chap. 3.3.1) An acoustic signal sounds and <End.> is displayed Put the weighing goods on the weighing plate ...
• The hook for the underfloor weighing is available as optional accessory • Information on this can be found on our homepage: www.kern-sohn.com • After completing the underfloor weighing the opening on the bottom of the balance must always be closed (dust protection).
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2. Select weighing application for density determination Select weighing application <1. SEt 5> (selection see chap. 9.4) 3. Select medium Navigate to <11. MEd.> and select medium (Navigation in menu: see chap. 8.3) Water No water (Other medium) ...
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Enter water temperature (numeric entry: see chap. 3.3.1) Press the [S] key to save the entry. When selecting 1 (No water): Display changes to <d> and flashes Release the [TARE/ZERO] key. Press the [TARE/ZERO] key to set the specific density.
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Press the [S] key when the stable weight value is displayed. Balance stores weight value and displays < >. 6. Correction of residual errors due to immersion basket Place container with water or other liquid under the balance ...
Press the [S] key to return to the weight value display. However, you cannot return to the density display. To do this, you must retake the measurement. 12.1 Density Table for liquids Density ρ [g/cm Temperatur e [°C] Water Ethanol Methanol 0.9997 0.7978...
Density measurement has been activated (see chap. 12). • You need a compatible printer to access these functions. Information on this can be found on our homepage: www.kern-sohn.com Selecting the data for output: In the menu navigate to <12.dod.> and select setting (Navigation in the menu: see chap.
13 Weighing with tolerance range Setting a tolerance range allows you to quickly check whether a weight value is within certain limits. Either you can determinate one tolerance value only (minimum value as lower limit) or a tolerance range (several limits). •...
13.1 Selection of weighing function with tolerance range In the menu select <2. SEL 2> (navigation in the menu: see chap. 8.3) If the add-on function needs to be used at the same time, select <2. SEL 3>. 13.2 Set distinction condition The distinction condition defines whether the evaluation of weight values is performed only if there are stable weight values or continuously (in case of fluctuating...
13.4 Set the number of tolerance limits In the menu navigate to <23. Pi.> and select the number of tolerance limits (navigation in the menu: see chap. 8.3) 1 limit (rank 1) * 2 limits (rank 1 and rank 3) * 3 limits (rank 1, rank 2, rank 4) ** 4 limits (rank 1, rank 2, rank 4, rank 5) ** * at <23.
13.6 Set acoustic signal In the menu navigate from <25. bu. 1> to <29. bu. 5> navigieren (Navigation in the menu: see chap. 8.3) Signal for rank 1 or “ - “ 25. bu. 1 Signal for rank 2 or “ TOL ✓ “ 26.
The evaluation of the weight value can also be shown on the bar graph display. The bar graph display can only be used when 2 limits are set („-„ and „+“). Evaluation of the Bar graph display weight value Upper tolerance limit exceeded Within the tolerance range...
13.9 Setting the tolerance values • Tolerance values can only be saved when the balance is in the measurement mode display • Set the balance to zero (see chap. 9.2) or tare (see chapter 9.3) the balance before saving tolerance values. 13.9.1 Absolute values For the distinction method setting with absolute values <24.
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Place the reference sample for the tolerance limit on the weighing plate Press the [F] key to save the reference value. An acoustic signal sounds and the value of the reference sample is displayed briefly (in this example: Weight value) ...
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Numeric input: When the balance is in the measuring mode, hold down the [S] key for about 2 seconds. When <L. SEt> or <L1 SEt> is displayed, release the [S] key Last stored value for the lower tolerance limit is appears on the display and flashes (in this example: Weight value) ...
13.9.2 Differential values For the distinction method setting with absolute values <24. tYP. 2> (see chap. 13.5) at <23. Pi.> = 1 or 2: → H. SEt Limit 2 TOL ✓ → r. SEt Reference value → L. SEt Limit 1 at <23.
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An acoustic signal sounds and the value of the reference sample is displayed briefly Remove reference sample <L SET> or <L1 SEt> is displayed Last difference reference sample flashes on the display Place the reference sample for the tolerance limit on the weighing plate ...
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Place the reference sample for the tolerance limit on the weighing plate Press the [F] key to save the reference value. An acoustic signal sounds and the difference of the reference sample is displayed briefly Remove reference sample Numeric input: ...
Press the [S] key An acoustic signal sounds and the entered value is displayed briefly (in this example: Weight value) <L SET> or <L1 SEt> is displayed Last difference reference sample flashes on the display Enter difference of the target weight as described above If the number of tolerance limits is more than 1:...
14 Totalization The Totalizing application allows you to weigh different samples and to totalize the weight values. This function can be used for various applications, such as weighing individual batches to determine total stock. • Totalizing is available for the following applications: Weighing, percent weighing, piece counting •...
14.2 Using the totalizing function The error message <t-Err> appears if you have not placed the samples correctly (More information: see chap. 21.1) 14.2.1 TOTAL-Adding Set the balance to <2C. Ad.M 1> (see chap. 14) Place the first sample on the weighing plate and wait until the display shows an asterisk <*>.
14.2.2 NET-Adding Set balance to <2C.Ad.M 2> (see chap. Place the first sample on the weighing plate and wait until the display shows an asterisk <*>. Press the [S] key Weight value is stored An acoustic signal sounds and <Σ> is briefly displayed together with the weight total ...
15 Settings • Press and hold the [F] key for about 2 seconds until <Func> is displayed. • Navigation in menu see chap. 8.3 15.1 Zero-Tracking Small weight variations (e.g. due to particles on the weighing plate) can be automatically tared by zero tracking. ...
15.4 Automatic Sleep function If the automatic sleep function is activated, the balance will automatically switch off the display if it has not been used after a period of 3 minutes. • Sleep mode of the balance is not enabled, o when the menu of the balance is open o when there are weighing goods on the weighing plate and the value is instable.
15.5 Setting the weighing units Two weighing units (A and B) can be set on the balance. During weighing, the display can be switched between these two units by pressing the [F] key. • Unit A can be used for all weighing applications. •...
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Press [F] key Enter time: The display changes to <tIME> and then to the clock-time display (24-hours format) Use the [TARE/ZERO] key to set the seconds to 00 and round them up or down to the next minute ...
Press the [S] key to save settings and return to weighing mode 15.7 Automatic switch-on function If the automatic power-on function is enabled, the balance will switch on automatically when it is connected to the mains. Users then no longer need to press the [ON/OFF] key.
16 Enhanced settings • Press [F] key and [TARE/ZERO] key simultaneously for about 2 seconds until <Func2> appears • Navigation in menu see chap. 8.3 16.1 Balance identification number Your balance can be distinguished from other balances by assigning a balance identification number (ID).
Press the [S] key An acoustic signal sounds and the balance returns into weighing mode 16.2 Measurement incertainty of the external adjustment weight The measurement incertainty indicates the deviation of the display from the external adjustment weight. By entering the measuring incertainty, this deviation from the adjustment or the adjustment test can be taken into account with an external adjustment weight.
<0 mg> is displayed and flashes Enter measurement incertainty in mg (numeric input: see chap. 3.3.1) Press the [S] key An acoustic signal sounds and the measurement incertainty is displayed briefly. The balance returns to weighing mode 16.2.2 Take over measurement deviation ...
17 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).
Various messages are shown on the display one after another: <Aut. CAL> → <WAIt> → <CH. 0> → <CH. F.S.> → <buSy> → <End> … When the balance returns to the weighing mode, the internal adjustment is finished 17.2 Adjustment test with internal weight •...
The difference value between the adjustment weight and the actual weight value is shown (measuring incertainty) Press any key to return to the weighing mode. 17.3 Adjustment with external weight • This function is not available for the following weighing systems: PEJ 2200-2M, PEJ 4200-2M ...
Place the adjustment weight centrally on the weighing plate. Various messages are shown on the display one after another: <buSy> → <End> The balance returns to weighing mode Unload weighing plate 17.4 Adjustment test with external weight •...
The message <on F.S.> is displayed when zeroing is complete Place the adjustment weight centrally on the weighing plate. The difference value between the adjustment weight and the actual weight value is shown (measuring incertainty) Press any key to return to the weighing mode.
18 Verification General: According to EU directive 2014/23/EU balances must be officially verified if they are used as follows (legally controlled area): • For commercial transactions if the price of goods is determined by weighing. • For the production of medicines in pharmacies as well as for analyses in the medical and pharmaceutical laboratory.
19 Interfaces The balance can communicate with external peripherals using the interface. Data can be sent to a printer, PC or control displays. In the same way, control commands and data inputs may occur via the connected devices (such as PC, keyboard, barcode reader).
19.1.2 Interface cable Balance 9-poles 9-poles Balance Printer 9-poles 9-poles 19.2 DIN8P-interface to the data output As per standard the balance is equipped with a DIN8P-interface. This duplicates the data output of the RS232C-interface. 19.2.1 Technical data Connection DIN8P Baud rate 1200/2400/4800/9600/19200 optional Parity Empty / Odd number / Even number...
The tare subtraction can be performed by an external device by connecting a contact or a transistor switch between pin 1 (EXT. TARE) and pin 5 (GND). A switch-on time of at least 400 ms must be observed (open-circuit voltage: 15 V when the scale is switched off, leakage current: 20 mA, when it is switched on).
19.3.2 Data description Presign: P1 = 1 character Code Significance Data is 0 or positive Data is negative Numeric data: D1-D7/D8/D9 Code Significance Numbers 0 to 9 0 – 9 30H – 39H Decimal point (position not fixed) Space before numeric data If numeric data does not contain a decimal point, a space is output at the least significant digit and no decimal point is output...
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Result evaluation for weighing with tolerance range: S1 = 1 character Code Significance Below lower tolerance limit (LOW / -) Within tolerance range (OK / TOL ✓) Upper tolerance limit exceeded (HIGH / +) 1. Limit 2. Limit 3. Limit 4.
19.4 Formats of the data output (special format 1) These data formats are only available for the PES weighing system. 19.4.1 Data composition Consists of 14 characters, including the end characters (CR= 0DH, LF= 0AH) *. 10 11 12 13 14 15 16 P1 Sp D1 D2 D3 D4 D5 D6 D7 D8 Sp U1 U2 U3 CR LF Measurement data (incl.
Units: U1, U2, U3 = 3 characters: To indicate the unit of the numerical data Code Code Code Significance Symbol (U1) (U2) (U3) Gram Kilogramm Carat Pieces Percent <0> is not Data instable displayed *Sp = space 19.4.3 Error messages <o-Err>: 10 11 Sp Sp Sp...
19.5 Formats of the data output (special format 2) These data formats are only available for the PES weighing system. 19.5.1 Data composition Consists of 14 characters, including the end characters (CR= 0DH, LF= 0AH) *. 15 16 17 18 S1 S2 S3 Sp D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 Sp U1 U2 U3 CR LF Measurement data (incl.
19.6 Data output formats (CBM) 19.6.1 Data composition • 26-digit data format Consists of 26 characters, including the end characters (CR= 0DH, LF= 0AH) *. 10 11 S1 C1 Sp T6 D1 D2 D3 D4 22 23 24 D5 D6 D7 D8 D9 D10 D11 D12 U1 U2 Sp CR LF •...
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Data type T1 - T6 = 1 - 6 characters For PEJ: Code Significance Net weight (not tared) Net weight (tared) Total Gross weight Piece weight *Sp = space For PES: Code Significance Net weight Total Gross weight Piece weight *Sp = space Numeric data: D1 –...
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Units: U1, U2 = 2 characters Code (U1) Code (U2) Significance Symbol Gram Kilogram Carat Pieces Percent *Sp = space TPES-B_TPEJ-B-BA-e-2319...
19.7 Data input • Pay attention to upper and lower case letters when entering data • Wait for the balance to respond between two entries 19.7.1 Input format 1 Input format: Example of permanent output: Input: O0 Zeroing / taring, data output: Code (C1) Code (C2) Significance...
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Response: A00: Input successful E01: Input Error E02: Error at the time interval setting Taring or zeroing cannot be carried out (range exceeded, weight E04: error, ...) • Commands O8 and O9 are used to request data. • After entering O8 or O9, the scale returns O0. •...
Date and time: Code (C1) Code (C2) Significance Output date Output time Response: A00: Input successful E01: Input Error E02: Error Adjustment / Adjustment test: The commands C1 to C4 do not function when <7. CA. 0> is set. Code (C1) Code (C2) Significance Deactivate entries...
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Be careful not to enter any weighing units (e.g. g). Set interval output: Code Code D1 … D8 Significance (C1) (C2) Time interval-input: hh,mm,ss Set interval output (hh = hours, mm = minutes, ss = seconds → separated by commas) Set tolerance values: Code Code...
19.8 Response formats Response A00/Exx Format ACK/NAK Format A00: Normal answer ACK: Normal answer E00-E99: Incorrect answer NAK: Incorrect answer 19.8.1 A00/Exx Format Consists of 5 characters, including the end characters (CR= 0DH, LF= 0AH) *. * End characters: CR = paragraph, LF = line Commands: Code (A1) Code (A2) Code (A3) Significance...
19.9 Communication settings Settings on the balance can be changed via the menu by pressing the [F] key. For navigation in the menu see chapter 8.3 19.9.1 Enable / disable interface and data format The settings 1, 2, 3, 41 and 42 are only available for the weighing system PES.
19.9.2 Change communication settings The communication settings can only be made after the interface having been activated (see chap. 19.9.1). Set output condition: Navigate to <61.oc.> in the menu and select the desired setting. End output Permanent output Continuous output only for stable values (interruption of output for unstable values).
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Set baud rate: Navigate to <62.bL.> in the menu and select the desired setting. 1200 bps 2400 bps 4800 bps 9600 bps 19200 bps Set parity: Parity can only be set if the interface is set to 2 or 3 (see chapter 19.9.1). ...
Set handling of blank digits: Navigate to <66.nu.> in the menu and select the desired setting Fill with 0 (30H) Fill with blank line (20H) Set response format: In the menu navigate to <67.rS.> and select the desired setting Format: A00/Exx Format: ACK/NAK 19.9.3 Interval output...
Start the interval output: Press [PRINT] key Display changes to <StArt> The balance returns to weighing mode The clock symbol appears on the display to indicate the interval output To finish the interval output, press the [PRINT] key again 19.10 Output functions 19.10.1 GLP-compliant data output...
Press and hold the [PRINT] key. <HEad> is displayed Head line is issued Weighing data are issued according to the settings of the data output (see chap. 19.9.2) When the data output is finished, keep the [PRINT] key pressed ...
20.2 Servicing, maintenance The appliance may only be opened by qualified service technicians authorised by KERN. Before opening, disconnect from power supply. 20.3 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.
21 Instant help for troubleshooting 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. Fault Possible cause • The weight display does not glow The balance is not switched on •...