KERN 440 Operating Instruction
440 series precision balances
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Summary of Contents for KERN KERN 440
- Page 1 KERN & Sohn GmbH Ziegelei 1 Tel: +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 instruction Precision balances KERN 440 Version 4.1 09/2009 440-BA-e-0941...
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Page 2: Table Of Contents
KERN 440 Version 4.1 09/2009 Operating instruction Precision balances 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 Settings......................22 Call-up menu structure ......................22 Leave menu structure ......................23 Dosing and Zero-tracking...................... 23 Selection of the adjustment weight..................24 Interface RS232C ........................25 8.5.1 Data transfer mode........................25 8.5.2 Baud rate ..........................25 Selection printed edition ....................... 26 Reset to factory setting ......................
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Page 4: Technical Data
1 Technical data KERN 440-21N 440-21A 440-33N Readability (d) 0.001 g 0.001 g 0.01 g Weighing range (max) 40 g 60 g 200 g Taring range (subtractive) 40 g 60 g 200 g Reproducibility 0.001 g 0.001 g 0.01 g Linearity ±... - Page 5 KERN 440-35N 440-35A 440-43N 440-45N Readability (d) 0.01 g 0.01 g 0.1 g 0.1 g Weighing range (max) 400 g 600 g 400 g 1,000 g Taring range (subtractive) 400 g 600 g 400 g 1,000 g Reproducibility 0.01 g 0.01 g 0.1 g 0.1 g...
- Page 6 KERN 440-47N 440-49N 440-49A Readability (d) 0.1 g 0.1 g 0.1 g Weighing range (max) 2,000 g 4,000 g 6,000 g Taring range (subtractive) 2,000 g 4,000 g 6,000 g Reproducibility 0.1 g 0.1 g 0.1 g Linearity ± 0.2 g ±...
- Page 7 KERN 440-51N 440-53N 440-55N Readability (d) 0.2 g Weighing range (max) 4,000 g 6,000 g 6,000 g Taring range (subtractive) 4,000 g 6,000 g 6,000 g Reproducibility 0.2 g Linearity ± 2 g ± 2 g ± 0.6 g Minimum unit weight at piece 0.4 g count Warm-up time...
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Page 8: Declaration Of Conformity
Manifestamos en la presente que el producto al que se refiere esta declaración está de acuerdo con las normas siguientes Italiano Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si riferisce è conforme alle norme di seguito citate. Electronic Balance: KERN 440 Mark applied EU Directive Standards 89/336EEC EMC... -
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... -
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: •... -
Page 12: Scope Of Delivery
6.2.2 Scope of delivery Serial accessories: • Balance (incl. protective cover) • Weighing plate • Mains power supply • Operating Manual • Windshield (440-21N, 440-21A) 6.3 Mains connection Power is supplied via the external mains adapter. The stated voltage value must be the same as the local voltage. -
Page 13: Connection Of Peripheral Devices
6.5 Connection of peripheral devices 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. 6.6 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. -
Page 14: Underfloor Weighing
6.9 Underfloor weighing Objects unsuitable for placing on the weighing scale due to size or shape may be weighed with the help of the flush-mounted platform. Proceed as follows: • Switch off balance. • Turn round the balance. • Open the closing lid (1) on the bottom of your balance. •... -
Page 15: Operation
7 Operation 7.1 Overview of display 7.2 Weighing Switch on the balance using the key. The balance shows for approx. 3 seconds „88888“ in the display and then goes to „0“. Now it is ready for operation. Important: Should the display flash or not be on „0“, press the key. -
Page 16: Taring
7.3 Taring Switch-on the balance using the key and wait for the „0“ display. Put the tare vessel on the weighing plate and press the key. The balance display goes to „0“. The weight of the container is now internally saved. If one after finishing the weighing process presses again the key, „0“... -
Page 17: Parts Counting
7.6 Parts counting Switch-on the balance using the key and wait for the „0“ display. Press key shortly. Appears the reference quantity 5. By pressing the key several times other reference quantities 10, 25 and 50 can be called up. Place as many parts to count on the weighing plate as the set reference quantity requires. -
Page 18: Net-Total Weighings
7.7 Net-total weighings It is useful if a mixture of several components is weighed into a tare vessel and finally the sum weight of all weighed components is necessary for control purposes (net- total, i.e. the weight of the tare vessel). Example: Put tare vessel onto weighing plate, tare with key to „0“. -
Page 19: Weighing Units (Unit)
7.9 Weighing units (Unit) Switch-on the balance using the key and wait for the „0“ display. Press the key and keep it pressed until „UNIT“ appears on the display. Press shortly, the selected unit appears in the display. Use the key to select between the different units (see table). -
Page 20: Display Background Illumination
The different weighing models have integrated different foreign weighing units. Details can be seen in this table: Model Units Gram Pound Ounce Troy ounce Tael Hongkong Tael Taiwan Grain Pennyweight Momme Tola Carat Freely selectable factor 7.10 Display background illumination In the menu the functions of the background illumination can be switched on or off. -
Page 21: Animal Weighing Function
7.11 Animal weighing function The balance has an integrated animal weighing function (mean value calculation). With this function it is possible to weigh domestic or small animals exactly, although they do not stand quiet on the weighing plate. Note: If they move too much, an exact weighing will not be possible. In the menu the animal weighing function can be switched on or off. -
Page 22: Settings
8 Settings 8.1 Call-up menu structure Switch-on the balance using the key and wait for the „0“ display. To enter into the menu structure keep the key pressed approx. 3 sec. until „UNIT“ appears. By pressing the key the different menu items are called up. Use the key to select a menu item. -
Page 23: Leave Menu Structure
8.2 Leave menu structure Everywhere in the menu it is possible to leave the menu structure and thereby save or reject the changes made. After pressing the key „Exit“ is displayed. A: Use the (YES) key, to confirm. After that „store“ is displayed. If it shall be saved, press the key repeatedly. -
Page 24: Selection Of The Adjustment Weight
8.4 Selection of the adjustment weight In the model KERN 440, the adjustment weight can be selected from four pre-set nominal values (approx.1/4; 1/2; 3/4; max) (refer also to table 1 below, factory setting with grey background). In order to achieve high-quality weighing results in the sense of the measuring technology, it is recommended to select the nominal value as high as possible. -
Page 25: Interface Rs232C
8.5 Interface RS232C Data output via interface RS 232 C General Information The previous condition for the data transfer between balance and a peripheral device (e.g. printer, PC ...) is that the appliances are set to the same interface parameters (e.g. -
Page 26: Selection Printed Edition
8.6 Selection printed edition Use this function to select which data are sent via the RS232C interface. To achieve this, follow the sequence of operations below: (is not valid for the data transfer mode BAPr ) Switch-on the balance using the key and wait for the „0“... -
Page 27: Reset To Factory Setting
8.7 Reset to factory setting With this function the manual changes of the menu settings are reset to factory setting. For this switch on the balance using the key and wait for the „0“ display. Press the key and keep it pressed until „UNIT“ appears on the display. Press the key nine times, in the display appears „rst“. -
Page 28: Data Output Rs 232 C
9 Data output RS 232 C 9.1 Technical data 8-bit ASCII Code 1 start bit, 8 data bits, 1 stop bit, no parity bit Baud rate selectable at 1200, 2400, 4800 and 9600 Baud Miniature plug-in necessary (9 pole D-Sub) For operation with interface faultless operation is only ensured with the correct KERN –... -
Page 29: Au Pc
9.3.3 AU PC The weighing values are sent automatically and continuously, no matter if the value is stable or unstable. e. Format for stable values for weight/quantity/percentage 10 11 12 13 14 15 16 17 18 f. Format in case of fault g. -
Page 30: Output On Bar Code Printer
SYMBOLS: = blank or M B / 0 /. = blank / weight values / decimal dot, depending on the measuring Value = weight unit / unit / % E, o, r = ASCII code or “E, o, r” = carriage return symbol = line feed symbol 9.4 Output on bar code printer The data transfer mode has to be set on „BA Pr“... -
Page 31: Service, Maintenance, Disposal
10 Service, maintenance, disposal 10.1 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 32: Instant Help
11 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 balance is not switched on. The displayed weight does not glow.