KERN EWJ Operating Instructions Manual
Precision balance
Hide thumbs
Also See for EWJ:
- Operating instructions manual (35 pages) ,
- Operating manual (40 pages) ,
- Operating instructions manual (232 pages)
Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Related Manuals for KERN EWJ
Summary of Contents for KERN EWJ
- Page 1 KERN & Sohn GmbH www.kern-sohn.com Ziegelei 1 +0049-[0]7433-9933-0 72336 Balingen-Frommern +0049-[0]7433-9933-149 Germany info@kern-sohn.com Operating instructions Precision Balance KERN EWJ Type TEWJ-B Version 1.0 2023-09 TEWJ-B-BA-e-2310...
-
Page 2: Table Of Contents
KERN EWJ Version 1.0 2023-09 Operating instructions Precision balance Content Technical data ....................5 Declaration of conformity .................. 9 Appliance overview..................10 Components ....................10 Operating elements ..................11 3.2.1 Keyboard overview ..................11 3.2.2 Numerical input ....................12 3.2.3 Overview of displays ..................13 Basic Information (General) ................ - Page 3 External adjustment < CalExt > ..............21 7.8.2 External adjustment with user-defined adjustment weight < caleud > ..22 7.8.3 Gravitational constant adjustment location < graadj > ......24 7.8.4 Gravitational constant place of location < grause > ........25 7.8.5 Verification ....................... 26 Basic Operation ....................
- Page 4 15.3.1 Add device ......................66 15.3.2 Determine COM Port number ................68 15.4 KERN Communications Protocol (KERN Interface Protocol) ....69 15.5 Issue functions ..................70 Add-up mode < sum > ..................70 15.5.1 Data output after pressing the PRINT button < manual > ......72 15.5.2...
-
Page 5: Technical Data
1 Technical data KERN EWJ 600-3 EWJ 6000-2 Item no./ Type TEWJ 600-3-A TEWJ 6000-2-A Readability (d) 0,001 g 0,01 g Weighing range (max) 600 g 6000 g Reproducibility 0,003 g 0,03 g ± ± Linearity 0,005 g 0,05 g... - Page 6 KERN EWJ 300-3 EWJ 300-3H EWJ 3000-2 Item no./ Type TEWJ 300-3-B TEWJ 300-3H-B TEWJ 3000-2-B Readability (d) 0,001 g 0,001 g 0,01 g Weighing range (max) 300 g 300 g 3000 g Reproducibility 0,003 g 0,003 g 0,03 g ±...
- Page 7 KERN EWJ 600-2M EWJ 600-2SM Item no./ Type TEWJ 600-2M-B TEWJ 600-2SM-B Readability (d) 0,01 g 0,01 g Weighing range (max) 600 g 600 g Reproducibility 0,01 g 0,01 g ± ± Linearity 0,03 g 0,03 g Stabilization time (typical)
- Page 8 KERN EWJ 6000-1M EWJ 6000-1SM Item no./ Type TEWJ 6000-1M-B TEWJ 6000-1SM-B Readability (d) 0,1 g 0,1 g Weighing range (max) 6000 g 6000 g Reproducibility 0,1 g 0,1 g ± ± Linearity Stabilization time (typical) Verification value (e) Verification class...
-
Page 9: Declaration Of Conformity
** Smallest part weight for piece counting - under normal conditions: ➢ There are unsteady ambient conditions (draft, vibrations) ➢ The parts to be counted are being scattered Declaration of conformity The current EC/EU Conformity declaration can be found online in: www.kern-sohn.com/ce TEWJ-B-BA-e-2310... -
Page 10: Appliance Overview
3 Appliance overview 3.1 Components Pos. Designation Pos. Designation Windshield RS232 connection Weighing plate USB connection Levelling screw Mains adapter connection Bubble level Battery case Keyboard Transport lock Display Adjustment switch TEWJ-B-BA-e-2310... -
Page 11: Operating Elements
3.2 Operating elements 3.2.1 Keyboard overview Button Name Function in Operating mode Function in Menu ➢ Calculate weighing data via ➢ Exit menu / back to weighing interface mode PRINT/ESC ➢ Menu level back ➢ Switch weighing unit ➢ Navigation key MODE ➢... -
Page 12: Numerical Input
3.2.2 Numerical input Button Designation Function Select cipher Confirm entry. Press button repeatedly for every Navigation key digit. Wait until the numeric input window extin- guishes. Select cipher Confirm entry. Press button repeatedly for every Navigation key ➔ digit. Wait until the numeric input window extin- guishes. -
Page 13: Overview Of Displays
3.2.3 Overview of displays Anzeige Beschreibung Stability display >0< Zero display Minus display Tolerance marks for check weighing Bar graph display Indicates how much the weighing plate is loaded with respect to the maxi- mum weighing range PRE-Tare enabled Data-Hold enabled Display net weight value Display gross weight value Weighing data can be found in the sum memory... -
Page 14: 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 15: Monitoring Of Test Resources
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 calibration laboratory test weights and balances may be calibrated (return to the na- tional standard) fast and at moderate cost. -
Page 16: Unpacking, Installation And Commissioning
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: •... -
Page 17: Unpacking And Checking
Check, whether the voltage acceptance on the scales is set correctly. Do not connect the scales to the power mains unless the information on the scales (sticker) matches the local mains voltage. Only use KERN original mains adapter. Using other makes requires con- sent by KERN. Important: ➢... -
Page 18: Rechargeable Battery Operation (Factory Option)
7.5 Rechargeable battery operation (Factory option) ATTENTION The rechargeable battery and the battery match with each other. Only use the delivered mains adapter. Do not use the balance during the loading process. The rechargeable battery can only be replaced by the same or by a type recommended by the manufacturer. -
Page 19: Connection Of Peripheral Devices
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 20: Internal Adjustment < Calint
7.8.1 Internal adjustment < calint > Press and hold the TARE and ON/OFF buttons simulta- neously to enter the setup menu. Wait until the first menu item < Cal> is displayed. Confirm by [ ] button, < calint > will be displayed. ... -
Page 21: External Adjustment < Calext
7.8.2 External adjustment < CalExt > Press and hold the TARE and ON/OFF buttons simulta- neously to enter the setup menu. Wait until the first menu item < Cal> is displayed. Confirm by [ ] button, < CalExt> will be displayed. ... -
Page 22: External Adjustment With User-Defined Adjustment Weight < Caleud
Place the adjustment weight. < wait> followed by < reMvld> will be displayed. Once < reMvld> is displayed, remove the adjustment weight. After successful adjustment the balance automatically re- turns to weighing mode. In case of an adjustment error (e.g. objects on the weigh- ing plate) the display will show the error message <... - Page 23 Acknowledge by [ ] button. The numeric input window for the weight value of the adjustment weight appears. The active digit is flashing. Provide adjustment weight. Enter weight value, numerical input see chap. 3.2.2 Acknowledge selection by [ ] button. < Zero >, <...
-
Page 24: Gravitational Constant Adjustment Location < Graadj
7.8.4 Gravitational constant adjustment location < graadj > Press and hold the TARE and ON/OFF buttons simulta- neously to enter the setup menu. Wait until the first menu item < Cal> is displayed. Confirm by [ ] button, < CalExt> will be displayed. ... -
Page 25: Gravitational Constant Place Of Location < Grause
7.8.5 Gravitational constant place of location < grause > Press and hold the TARE and ON/OFF buttons simulta- neously to enter the setup menu. Wait until the first menu item < Cal > is displayed. Confirm by [ ] button, < CalExt > will be displayed. ... -
Page 26: Verification
8 Verification General: According to EU directive 2014/31/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. - Page 27 Position of the official seals: Seal marks TEWJ-B-BA-e-2310...
-
Page 28: Basic Operation
9 Basic Operation 9.1 Turn on/off Start-up: Press the ON/OFF button. The display lights up and the balance carries out a selftest. Wait until the weight display appears The scales are now ready for operation using the last active application Switching off: ... -
Page 29: Zeroing
9.3 Zeroing In order to obtain optimal weighing results, reset to zero the balance before weighing. Zeroing is only possible in the range ± 2% Max. For values greater than ± 2% maximum the error message < zlimit> is dis- played ... -
Page 30: Switch-Over Weighing Unit
9.5 Switch-over weighing unit Enable unit: The unit for quick selection can be determined when the [MODE]-button is shortly pressed for the first time. Press the [MODE]-button and wait until the display flashes. Use the navigation keys to select the weighing unit and confirm on [ ... - Page 31 Enable another unit: Select menu setting < unit> and confirm on [ ] button. Wait until the display flashes. Use the navigation keys to select the weighing unit and confirm on [ ] button. • For the required settings of an application unit (FFA, %) selection, please see chap.
-
Page 32: Operating Concept
10 Operating concept From factory the balance is delivered with various applications (weighing, check weighing, counting). After the first start-up the balance is in the <Weighing> applica- tion. In the application menu (see chap.14.2.) however, you can define, selecting an ap- plication, in which mode the balance after switching-on has to continue working. - Page 33 The last active application, e.g. < weih > is displayed. Use the TARE-button to select the desired application, selectable wei h Weighing count Counting check Check weighing Acknowledge selection by [ ] button. According to the selected application in the application menu just appear the applica- tion-specific settings, so that you reach the target quickly without deviation.
-
Page 34: Application
11 Application <Weighing> How to carry out a simple weighing and taring, please refer to chap. 9.2 or 9.4. Fur- ther specific settings you will find in the following chapters. Shouldn’t the application <Weighing> already be enabled, select the menu setting <... - Page 35 Overview (verifiable models): Level 1 Level 2 Level 3 Description / Chapter Take over the placed weight as PRE-TARE value,, see Ptare actuAl chap. 11.2.1 PRE-TARE manuAl Numerical input of the tare weight, see chap. 11.2.2 CLEAR Delete PRE-TARE value hold Start-Hold function, see chap.
-
Page 36: Pre-Tare
11.2 PRE-Tare 11.2.1 Take over the placed weight as PRE-TARE value Ptare actuAl < < > > Deposit weighing container Invoke menu setting < Ptare > and confirm by [ ] button. To take over the placed weight as a PRE-TARE value, use the navigation keys ... -
Page 37: Enter The Known Tare Weight Numerically
11.2.2 Enter the known tare weight numerically < Ptare > < manuAl > Invoke menu setting < Ptare > and confirm by [ ] button. Using the navigation keys select the setting Select < manuAl > and confirm by pressing the [ ] button. -
Page 38: Data-Hold Function
11.3 Data-Hold function Menu setting < hold > Place goods to be weighed. Acknowledge by [ ] button. The first stable weight value is symbolised by [HOLD] in the upper edge of the display. After the load is removed, the value is left in the display for another 10 seconds. -
Page 39: Weighing With Multiplication Factor Via The Application Unit
• For the required settings of an application unit (FFA, %) selection, please see chap. 11.4.2 and 11.4.3. • Using the [MODE] button you can switch between the active unit 1 and unit 2. 11.4.2 Weighing with multiplication factor via the application unit <FFA> Here you determine with which factor the weighing result (in gram) will be multiplied. -
Page 40: Percent Weighing By Application Unit
11.4.3 Percent weighing by application unit <%> The application unit <%> allows to check the weight of a sample in percent, based on a reference weight. Select menu setting < unit>. Place a reference weight which corresponds to 100 % ... -
Page 41: Molar Weighing Mode
11.4.4 Molar weighing mode This function calculates the amount of a substance (in mol) based on the molar mass and the weight of the substance. Select menu setting <unit > and confirm on [ ] but- ton. Use the navigation keys to select the setting < mol > and confirm on [ ... -
Page 42: Application
12 Application <Counting> Shouldn’t the application <Counting> already be enabled, select the menu setting < mode > < count >, see chap. 10 12.1 Application-specific settings Call up menu: Press the TARE key and hold it until < apcmen> is displayed. ... -
Page 43: Using The Application
12.2 Using the application 12.2.1 Piece counting Before the balance can count parts, it must know the average part weight (i.e. refer- ence). Proceed by putting on a certain number of the parts to be counted. The bal- ance determines the total weight and divides it by the number of parts, the so-called reference quantity. - Page 44 Reference quantity user-defined: If necessary, put on and tare the weighing container. Put on the desired quantity of reference pieces. Invoke menu setting < ref > and confirm by [ ] button. Use the navigation keys to select the setting < free>...
- Page 45 Use the navigation keys to select the comma position and confirm on [ ] button. Enter piece weight, numerical input see chap. 3.2.2, the active digit flashes. Acknowledge by [ ] button. The balance is now in piece counting mode counting all units on the weighing plate.
-
Page 46: Target Counting
12.2.2 Target counting The <Target counting> application variant allows weighing of goods within set toler- ance limits in keeping with a determined target quantity. Reaching the target quantity is indicated by an acoustic (if activated in menu) and an optic signal (tolerance marks). Optical signal: The tolerance marks provide the following information: Target quantity exceeds defined tolerance... - Page 47 Procedure: 1. Define target quantity and tolerances Make sure that the scale is in counting mode and that an average piece weight has been defined (see chap. 12.2.1). Use the navigation keys to select the setting < target >...
- Page 48 The balance returns to the < Errupp > menu. Use the navigation keys to select the setting < errlow> and confirm on [ ] button. Use the navigation keys to select the weighing unit and confirm on [ ...
-
Page 49: Application < Checkweighing
13 Application < Checkweighing > Shouldn’t the application <Checkweighing> already be enabled, select the menu setting < mode > < check >, see chap. 10 13.1 Application-specific settings Call up menu: Press the TARE key and hold it until < apcmen > is displayed. ... -
Page 50: Using The Application
13.2 Using the application 13.2.1 Target weighing The <target weighing> application variant allows weighing of goods within set tolerance limits in keeping with a determined target weight. Reaching the target weight is indicated by an acoustic (if activated in menu) and an optic signal (tolerance marks). - Page 51 Procedure: 1. Define target weight and tolerances Use the navigation keys to select the setting < target > and confirm with [ ] button. < value > is displayed. Confirm on [ ] button, the numeric input window ap- pears.
- Page 52 Use the navigation keys to select the setting < err- low> and confirm on [ ] button. Use the navigation keys to select the weighing unit and confirm on [ ] button. The numeric input window appears. The active digit is flashing.
-
Page 53: Checkweighing
13.2.2 Checkweighing With the <Checkweighing> application variant you can check if the weighing good is within a predefined tolerance range. When limit values are exceeded below or above, an acoustic signal (if enabled in menu) will sound and an optic signal (tolerance marks) will be displayed Optic signal: The tolerance marks provide the following information: Weighed-in goods exceed predefined tolerance... - Page 54 Use the navigation keys to select setting < limlow >. Press [ ] button to confirm, the numeric input window for entering the lower limit value will appear. The active digit is flashing. Enter lower limit value (numerical input see chap. 3.2.2) and confirm the entry.
-
Page 55: Menü
14 Menü 14.1 Navigation in the menu Call up menu: Application menu Setup menu Press the TARE button and keep it Press the TARE and ON/OFF button at pressed until the first menu item will be the same time and keep them pressed displayed until the first menu item will be displayed Select and adjust parameters:... -
Page 56: Setup Menu
14.3 Setup menu In the setup menu you have the possibility to adapt the behaviour of the balance to your requirements (e.g. environmental conditions, especial weighing processes). These settings are global and do not depend on the selected application. 14.3.1 Overview < setup > Not verifiable models: other levels / description Level 1... - Page 57 Print intfce Rs232 RS 232 interface Data output usb-d USB-Schnittstelle Switch on / off add-up mode, see chap. 15.5.1 On, off prmode trig manual Data output by pressing the PRINT button, see chap. 15.5.2 On, off autopr Automatic data output with stable and positive weighing value see chap.15.5.3.
- Page 58 BEEPER keys Switch on / off acoustic signal by pressing button Acoustic signal Check Acoustic signal off Slow Slow ch-ok Standard Fast Fast Cont. Continuous Acoustic signal off Slow Slow ch-lo Standard Fast Fast Cont. Continuous Acoustic signal off Slow Slow ch-hi Standard...
- Page 59 Blight mode Background lighting of display is switched always on permanently Display background il- lumination The background illumination is automati- cally switched-off according to the time wi- timer thout load change or without operation defi- ned in menu item < Time > Display background illumination always No bl switched off...
- Page 60 Verifiable models: other levels / description Level 1 Level 2 Description ➔ calint Internal adjustment, see chap. 7.8.1 Adjustment 1200 Rs232 baud 2400 Communication Usb-d 4800 9600 14400 19200 38400 57600 115200 128000 256000 7dbits data 8dbits None parity even 1sbit stop...
- Page 61 Print intfce Rs232 RS 232 interface Data output usb-d USB-Schnittstelle Switch on / off add-up mode, see chap. 15.5.1 On, off prmode trig manual Data output by pressing the PRINT button, see chap. 15.5.2 On, off autopr Automatic data output with stable and positive weighing value see chap.15.5.3.
- Page 62 BEEPER keys Switch on / off acoustic signal by pressing button Acoustic signal Check Acoustic signal off Slow Slow ch-ok Standard Fast Fast Cont. Continuous Acoustic signal off Slow Slow ch-lo Standard Fast Fast Cont. Continuous Acoustic signal off Slow Slow ch-hi Standard...
- Page 63 Blight mode Background lighting of display is switched always on permanently Display background il- lumination The background illumination is automati- cally switched-off according to the time wi- timer thout load change or without operation defi- ned in menu item < Time > Display background illumination always No bl switched off...
-
Page 64: Interfaces
15 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). -
Page 65: Connect Printer
Use a suitable cable to connect the weighing balance to the interface of the printer. Faultless operation requires an adequate KERN interface cable (optional). Turn on scale and printer. Communication parameters (baud rate, bits and parity) of balance and printer must match;... -
Page 66: Bluetooth (Factory Option)
® The wordmark and logos are the property of Bluetooth SIG,Inc. ® The use of such trademarks is licensed by KERN. Other trademarks and brand names are the property of their respective owners. 15.3.1 Add device Switch on balance ... - Page 67 Click on "Enter pairing code of the device" Enter code 1234 Click on „Close“ TEWJ-B-BA-e-2310...
-
Page 68: Determine Com Port Number
15.3.2 Determine COM Port number Display Bluetooth network appliances Double-click to display the COM Port TEWJ-B-BA-e-2310... -
Page 69: Kern Communications Protocol (Kern Interface Protocol)
15.4 KERN Communications Protocol (KERN Interface Protocol) KCP is a standardized set of interface orders for KERN balances, which allows many parameters and device functions to be called up and controlled. KERN devices that have KCP can use it to connect easily to computers, industrial control systems and other digital systems. -
Page 70: Issue Functions
15.5 Issue functions 15.5.1 Add-up mode < sum > With this function the individual weighing values are added into the summation memory by pressing a button and edited when an optional printer is connected. Activate function: In Setup menu invoke the menu setting < Print > < sum > and confirm ... - Page 71 Sample log (KERN YKB-01N): Menu setting < prmode > < format > < short > First weighing Second weighing Third weighing Number of weighings/ Total Sample log (KERN YKB-01N): Menu setting < prmode > < weight < sglprt ...
-
Page 72: Data Output After Pressing The Print Button < Manual
15.5.2 Data output after pressing the PRINT button < manual > Activate function: In Setup menu invoke the menu setting < print > < prmode < > trig > and confirm with [ ] button. For a manual data output select the menu setting < manual > with the naviga- tion keys ... -
Page 73: Automatic Data Output < Auto
15.5.3 Automatic data output < auto > Data output happens automatically without having to press the PRINT button as soon as the corresponding output condition has been met, dependent on the setting in the menu. Enable function and set the output condition: In Setup menu invoke the menu setting <... -
Page 74: Data Format
Sample log (KERN YKB-01N): 15.6 Data format In the setup menu call up the menu setting < print > < prmode> <weight > <gntprt > and confirm on [ ] button. Use the navigation keys to select the menu setting < format > and con- ... -
Page 75: Servicing, Maintenance, Disposal
Spilled weighing goods must be removed immediately. 16.2 Servicing, maintenance The appliance may only be opened by trained service technicians who are au- thorized by KERN. Before opening, disconnect from power supply. 16.3 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 76: Instant Help For Troubleshooting
17 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 balance is not switched on. The weight display does not glow. -
Page 77: Error Messages
18 Error messages Error message Explication zlimit Zero setting range exceeded UnderZ Zero setting range not achieved instab Load instable wrong Adjustment error Underload Overload Lo Bat Capacity of batteries / rechargeable batteries ex- hausted TEWJ-B-BA-e-2310...