KERN EWJ Operating Instructions Manual
Precision balances
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- Operating instructions manual (77 pages) ,
- Operating instructions manual (232 pages)
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Summary of Contents for KERN EWJ
- Page 1 KERN & Sohn GmbH Ziegelei 1 Phone: +49-[0]7433- 9933-0 D-72336 Balingen Fax: +49-[0]7433-9933-149 E-Mail: info@kern-sohn.com Internet: www.kern-sohn.com Operating manual Precision balances KERN EWJ Version 1.1 02/2014 EWJ-BA-e-1411...
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Page 2: Table Of Contents
KERN EWJ Version 1.1 02/2014 Operating manual Precision balance Contents Technical data ....................4 Appliance overview ..................6 Keyboard overview ........................8 Overview of display ........................9 Basic Information (General) ................ 10 Proper use ..........................10 Improper Use ..........................10 Warranty ........................... - Page 3 Technical data .......................... 31 Printer operation (RS 232)......................32 Output log (continuous output) ....................33 Servicing, maintenance, disposal .............. 33 10.1 Clean ............................33 10.2 Servicing, maintenance ......................33 10.3 Disposal ............................ 33 Instant help ....................34 Declaration of conformity ................35 EWJ-BA-e-1411...
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Page 4: Technical Data
1 Technical data KERN EWJ 300-3 EWJ 300-3H EWJ 3000-2 Readability (d) 0.001 g 0.001 g 0.01 g Weighing range (max) 300 g 300 g 3000 g Reproducibility 0.001g 0.001g 0.01g Linearity ±0.003 g ±0.003 g ±0.03 g Smallest part weight for... - Page 5 KERN EWJ 600-2M EWJ 6000-1M Readability (d) 0.01 g 0.1 g Weighing range (max) 600 g 6000 g Reproducibility 0.01 g 0.1 g Linearity ± 0,03 g ± 0.3 g Verification value (e) 100 mg Verification class Minimum weight (min)
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Page 6: Appliance Overview
2 Appliance overview Example EWJ 300-3 / EWJ 600-2M: Windshield Weighing pan Levelling screw Bubble level Keyboard Display RS-232 Terminal power supply unit 10. Battery compartment 11. Transportation locks 12. Adjustment switch EWJ-BA-e-1411... - Page 7 Example EWJ 300-3H: 13. Windshield 14. Weighing pan 15. Display 16. Bubble level 17. Keyboard 18. Levelling screw 19. RS-232 20. USB 21. Terminal power supply unit 22. Battery compartment 23. Transportation locks 24. Adjustment switch EWJ-BA-e-1411...
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Page 8: Keyboard Overview
Exit menu / back to weighing mode. interface Switch-over weighing unit Scroll forward in menu Parts counting Delete total added memory Percent determination Start internal adjustment (longer pressing of the button) Taring Zeroing Take over selected setting Turn on/off EWJ-BA-e-1411... -
Page 9: Overview Of Display
Indicator for percent determination Currently selected weight unit Loading status of the rechargeable battery (prerequisite fully loaded menu setting „P9batt on“, see chap. 8.2). The number of segments informs about the loading 1/2 loaded status of the rechargeable battery. empty EWJ-BA-e-1411... -
Page 10: 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. 3.3 Warranty Warranty claims shall be voided in case •... -
Page 11: 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 DKD calibration laboratory test weights and balances may be calibrated (return to the national standard) fast and at moderate cost. -
Page 12: Unpacking, Setup And Commissioning
6.2.1 Scope of delivery / serial accessories: • Balance, see chap. 2 • Mains adapter • Protective cover • Operating manual • Transport Securing • Glass wind shield only models EWJ 300-3, EWJ 300-3H, EWJ 600-2M EWJ-BA-e-1411... -
Page 13: Installing / Removing Transport Fittings
Check levelling regularly 6.3 Mains connection Power is supplied via the external mains adapter. The stated voltage value must be the same as the local voltage. Only use KERN original mains adapter. Using other makes requires consent by KERN. EWJ-BA-e-1411... -
Page 14: Storage Battery Operation (Optional)
Before connecting or disconnecting of additional devices (printer, PC) to the data interface, 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 15: Adjustment
„CAL“ is displayed The motor noise of the loading system for the internal adjustment weight can be heard, the internal adjustment is started. After successful adjustment „PASS“ will be displayed. The balance returns automatically into weighing mode. EWJ-BA-e-1411... -
Page 16: Automatic Internal Adjustment
8.3) the internal adjustment is automatically started. The motor noise of the loading system for the internal adjustment weight can be heard, the internal adjustment is started. After successful adjustment „PASS“ will be displayed. The balance returns automatically into weighing mode. EWJ-BA-e-1411... -
Page 17: Verification
Please observe all national laws and legal regulations. In Germany a re- verification will be necessary. Position of seals and adjusting switch: 1. Self-destroying seal mark 2. Plastic disk to cover the adjustment switch 3. Adjustment switch 4. Lead 5. Wire 6. Housing screw EWJ-BA-e-1411... -
Page 18: Operation
Overloading exceeding the stated maximum load (max) of the device, minus a possibly existing tare load, must be strictly avoided. This could damage the instrument. Exceeding maximum load is indicated by the display of „----“ and an audio sound. Unload weighing system or reduce preload. EWJ-BA-e-1411... -
Page 19: Percent Determination
Place goods to be weighed on balance. The weight of the item to be weighed is displayed in percent, with reference to the nominal weight. Press , the weight of the item to be weighed is displayed in the current weighing unit e.g. gram. EWJ-BA-e-1411... -
Page 20: Parts Counting
Remove reference weight. The balance is from now in parts counting mode counting all units on the weighing plate. Switching over between quantity and weight display Place load on pan and read the number of pieces. Press , the weight will be displayed. EWJ-BA-e-1411... -
Page 21: Manual Totalizing
. The weight value will be saved and printed if an optional printer is connected. The number of weighings, followed by the total weight will be indicated. Remove the weighed good. More weighed goods can only be added when the display ≤ zero. EWJ-BA-e-1411... - Page 22 Add more weighed goods as described before. Please note that the weighing system must be unloaded between the individual weighing procedures. This process may be repeated 99 times or till such time as the capacity of the weighing system has been exhausted. EWJ-BA-e-1411...
- Page 23 2 sec and printed if an optional printer is connected. Delete total added memory: When display „Sum „Total““ appears, press . The data in the summation memory are deleted. Printout example (KERN YKB-01N): 100.00 g First weighing 100.00 g 200.00 g Second weighing 200.00 g...
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Page 24: Automatic Adding-Up
More weighed goods can only be added when the display ≤ zero. Place item to be weighed B, e.g. 200 g. After stabilisation control has taken place, you will hear an audio sound. EWJ-BA-e-1411... - Page 25 Please note that the weighing system must be unloaded between the individual weighing procedures. This process may be repeated 99 times or till such time as the capacity of the weighing system has been exhausted. Display and delete the weighing data, as well as printout examples see chap. 7.9. EWJ-BA-e-1411...
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Page 26: Menu
Change settings Switch into the available settings using Acknowledge setting / Either save by pressing or cancel by pressing exit the menu Return to weighing Press repeatedly to exit menu. mode EWJ-BA-e-1411... -
Page 27: Access To Technology Menu
Position of adjustment switch see chap. 6.11 Attention: After destruction of the seal the balance must be re-verified by an authorised agency and a new verification wire/seal mark fitted before it can be reused for applications subject to verification. EWJ-BA-e-1411... -
Page 28: Overview
No data are sent, the balance carries out the tare function. No data are sent, the zero-display appears. Quantity will be sent via the interface Acknowledge selection by b600 Baud rate 600, 1200, 2400, 4800, 9600 selectable. b 9600* Acknowledge selection by EWJ-BA-e-1411... - Page 29 Mask loading status display „Recharg.battery“ P6 bAtt bAtton Display loading status display „Recharg.battery“ SALE m Sale mode no: d= 0.1g SALE n EWJ 300-3: EWJ 600-2M: EWJ 6000-1M: d= 0.001 g d= 0.01 g d= 0.1 g Sale mode yes: d= 0.01 g...
- Page 30 Automatic zero point correction switched off 0.5d Automatic zero point correction (Autozero) by A2n 1d changing the display, digits selectable (0.5d, 1d, 2d, A2n 2d* A2n 4d XXXXX P5 GrA Local gravitational constant (not documented) P6 CAP XXXX Capacity (max) EWJ-BA-e-1411...
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Page 31: Interfaces
PC software (e.g. KERN balance connection). We recommend the USB interface set KERN DBS A02 (scope of supply: USB cable, driver CD, software balance connection.) For further information please go to KERN-Homepage (www.kern-sohn.com). -
Page 32: Printer Operation (Rs 232)
9.2 Printer operation (RS 232) Printout examples (KERN YKB-01N): 1. Menu setting F3 COM „P Prt“ Gross weight 300.00g Net weight 100.0g Percent determination PERC: 50.01 % Parts counting 20PCS 5.00027g 100g 49.99g Totalization 49.99g 49.99g 49.99g 149.99g 149.99g 299.97g 2. -
Page 33: Output Log (Continuous Output)
Spilled weighing goods must be removed immediately. 10.2 Servicing, maintenance The appliance may only be opened by trained service technicians who are authorized by KERN. Before opening, disconnect from power supply. 10.3 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 34: Instant Help
• Great fluctuations in temperature. • Warm-up time was ignored. • 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. EWJ-BA-e-1411... -
Page 35: Declaration Of Conformity
EN 60950: 2006+A11:2009 Datum 23.12.2013 Signatur Date Signature Ort der Ausstellung 72336 Balingen Albert Sauter Place of issue KERN & Sohn GmbH Geschäftsführer Managing director KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0 Fax +49-[0]7433/9933-149, E-Mail: info@kern-sohn.com, Internet: www.kern-sohn.com EWJ-BA-e-1411...