Operating instructions METTLER TOLEDO B balance lines •College-B •CB •GB
Short-form operating instructions Simple weighing Press key briefly Calibration (adjusting) 0.00 g Press and hold key until the desired display appears Cal/Menu CAL 1182.03 g Automatic procedure -----1250.00 g 2000.00 Switching on Taring ------ =00 g On 0.00 88888888 12+01 g ------ ------ # =00 g CAL donE 0.00 g 9%97 g Switching off On # Off OFF Unit switching 22.00 g 14.14 dwt 110.00 ct 0.
Contents 1 Getting to know the B balance lines .......................................... 2 4.2.3 Unit 1, 2, 3 – selecting unit 1, 2, 3 with CB and GB balances ...... 14 1.1 1.2 1.3 Introducing the B balance lines.................................................... 2 Layout of the B balances ............................................................ 3 The keys of the B balances (overview) ......................................... 4 4.2.4 4.2.5 A. oFF – setting automatic shutdown ...................
2 1 Getting to know the B balance lines 1.1 Introducing the B balance lines Three specially oriented B balance lines College-B CB We have derived three lines for special application fields from the standard range of the B balances: School balances (College-B), carat balances (CB) and gold balances (GB). These balances are geared to the special requirements of the respective segments with regard to type of weighing and functions.
1.2 Layout of the B balances 5 4 1 Keys 3 2 3 Model plate1) 2 Display 4 Weighing pan/platform 1 6 7 5 Draft shield 6 Certification switch for weights and measures inspector and service engineer 4 7 Leveling feet 3 8 AC adapter socket 9 Provision for antitheft device 2 1 10 Leveling control 10 7 11 RS232C interface 9 4 Keys, operation and display are identical for all B balances.
4 1.3 The keys of the B balances (overview) B balances have two operator control levels: the weighing mode and the menu. The keys have different meanings, depending on the operator control level and how long a key is pressed.
2 Startup 2.1 Unpacking / Standard equipment All B balances are supplied in an environmentally harmless package.
6 2.3 Setting up The optimum location The correct location makes an important contribution to the accuracy of the weighing results of high-resolution analytical and precision balances. Hence, ensure a • stable, vibration-free position as horizontal as possible. Avoid • direct sunlight, • excessive temperature fluctuations, • drafts. The best position is on a stable bench in a corner protected against drafts as far as possible from doors, windows, radiators or the ventilation slots of air conditioners.
1 2 Leveling B balances have a level control and adjustable leveling feet to compensate for slight irregularities in the weighing bench surface. The balance is exactly horizontal when the air bubble 1 is in the middle. Procedure Turn the two leveling feet 2 and 3 as shown in the diagram or described in the table so that air bubble 1 is in the middle.
8 2.4 Calibration (adjusting) To obtain accurate weighing results, the balance must be matched to the acceleration due to gravity at its location. Cal/Menu CAL Calibration is necessary • before the balance is used for the first time, ------ • at regular intervals during weighing operations, • after a change in location. 2000.
3 Weighing 3.1 On/off switching Switching on On 88888888 ➞ Remove any load from weighing pan and press On briefly. The balance performs a display test. When zero is displayed, the balance is ready for operation. ------ 0.00 On # g OFF Switching off ➞ Press and hold Off 3.2 0.00 g 1182.03 g 1250.00 g On # Off until "OFF" appears in the display. Release key. Simple weighing ➞ Place weighing sample on the weighing pan. ➞ Wait until the stability detector " " fades. ➞ Read off result.
10 3.3 =00 g 12+01 g # =00 g 9%97 g Taring ➞ Place empty container on the balance. ➞ The weight is displayed. ➞ Tare: press # briefly. ➞ Add weighing sample to container, the net weight is displayed. If the container is removed from the balance, the tare weight will be shown as a negative value. The tare weight remains stored until -12+01 g is again pressed or the balance is switched off.
3.5 Switching of weight units All B balances can display weight values in different weight units. • With school balances (College-B), the fixed units gram (g) and newton (N*) are available. * As the balance is an instrument to determine mass, when school balances are used to determine force a small measurement error arises. It depends on the geographic location as a constant conversion factor 1 ^ kg = 9.80665 N is used.
12 4 Menu 4.1 Overview On the menu, you can select unit 1, 2 and 3, and you can adjust the vibration adapter and the automatic shutdown. With certified balances/scales, the unit selection can be blocked following installation if required by national legislation. The factory setting differs according to the country and the model. Entry into menu Press and hold until "MENU" appears in the display. Release key, the 1st Cal menu option "rESEt" appears.
4.2 Description of the menu options 4.2.1 Reset and printout of the balance setting Reset balance setting and functions to factory setting (rESEt) rESEt LISt ➞ Select "rESEt" and press and hold until "r donE" is displayed. The balance is now reset to the factory setting and returns to the weighing mode. The factory setting differs according to the country and the model.
14 4.2.3 Unit 2 Unit 2 g kg Unit 2 lb Unit 2 oz g Unit 2 Unit 1, 2, 3 – selecting unit 1, 2, 3 with CB and GB balances The following weight units can be selected. With certified balances/scales, the unit selection can be blocked following installation if required by national legislation. Unit g kg lb oz ozt GN dwt ct mg mo m H tl S tl t tl gram kilogram pound ounce troy ounce grain pennyweight carat milligram momme mesghal Hong Kong taels Singapore taels Taiwan taels 4.2.4 A. oFF – A.
Printer HoSt 4.2.5 Selecting peripheral device In this menu option you can select the desired peripheral device. The balance automatically stores the appropriate settings for every peripheral device. Printer Attachment to a printer (e.g. METTLER TOLEDO GA42 Printer), (section 5.2). Factory setting: bd 2400, 7b–E, HS oFF Host Attachment to any peripheral device. Factory setting: bd 9600, 8b–no, HS SoFt S. Stb 4.2.
16 2400 4800 4.2.8 Setting baud rate (data transmission rate) The data transmission rate (baud rate) determines the speed of the transmission via the serial interface. The unit is baud (1 baud (bd) = 1 bit/second). The following settings are available: 150 bd, 300 bd, 600 bd, 1200 bd, 2400 bd, 4800 bd and 9600 bd. 1200 7b-E 4.2.9 Setting parity/bits In this menu option you can set the character format for the attached peripheral device.
5 5.1 Technical data and optional equipment Technical data Standard equipment • Protective cover; with CB balances, the protective cover is part of the optional equipment • AC adapter to national codes (Power supply: 115 V/230 V, -20/+15%, 50/60 Hz, 65/30 mA, 6 VA) (Power supply balance: 8–14.5 V, 50/60 Hz or 9.5–20 V = 1.
18 Carat balances CB203 Readability 0.001 ct / Maximum capacity CB603 0.01 ct / 0.01 g 210 ct / 610 ct / 122 g Repeatability (s) 0.001 ct / 0.005 ct / 0.001 g Linearity +/– 0.002 ct / 0.005 ct / 0.01 g Calibration weight 100 g (500 ct) Calibration weight with certified balances 100 g (500 ct) CB1503 DeltaRange 0.001 ct / 0.01 g 610 ct / 122 g 0.001 ct* / 0.01 ct / 0.01 g 500 ct* / 1600 ct / 320 g 0.001 ct / 0.001 g 0.001 ct* / 0.005 ct / 0.003 g 0.002 ct / 0.002 ct* / 0.
5.2 Interface RS232C interface and interface accessories Every B balance is fitted with an RS232C interface for attachment to a peripheral device (e.g. printer or PC with a 9-pin male connector). Matching to a different device can be carried out in the menu (sections 4.2.5–4.2.8). 5.3 You will find a detailed description of the available interface commands in the enclosed brochure “Reference Manual MT-SICS, available in English only).
20 6 Appendix 6.1 Printout examples with LC-P45 and GA42 Printers • Functions triggered by printer 1) • Functions triggered by balance Function: Calibration Function: List Printout of the current balance settings Function: Calibration With automatic insertion of date and time Function: Verification With automatic insertion of date and time, with fixed weight (calibration weight) -- BALANCE CALIBRATION Date: ................. Time: ................. --------- LIST --------Date: ..................
6.2 Preventive maintenance Servicing Regular servicing of your balance by a service engineer extends its life. Ask your METTLER TOLEDO dealer for details of the servicing possibilities. Cleaning The balance housing and the weighing pan are made of high-grade, resistant materials. All usual cleaning agents can thus be used. Note After working with chemicals, it is advisable to wash or clean the weighing pan and the baseplate (if draft shield fitted).
22 6.3 What if...? Error/error message ò------ô Cause Rectification Overload ➞ Remove sample from weighing pan, rezero (tare). If overload appears when balance switched on, recalibrate (readjust) balance. Underload ➞ Remove sample from weighing pan, rezero. ñ------ó Error 1 Error 2 Error 5 0 Abort ➞ Check whether weighing pan is positioned properly. If underload appears when balance switched on, recalibrate (readjust) balance.
6.4 Index AC adapter ................................................. 5, 7 Adjustment ..................................................... 8 Ambient conditions ....................................... 17 Antitheft device ............................................... 6 Error/error message ...................................... 22 RS232C interface .......................................... 19 Factory setting .............................................. 13 School balances ...........................
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To protect your METTLER TOLEDO product’s future: METTLER TOLEDO Service assures the quality, measuring accuracy and preservation of value of all METTLER TOLEDO products for years to come. Please send for full details about our attractive terms of service. Thank you. Subject to technical changes and to the availability of the accessories supplied with the instruments. *P11780200* © Mettler-Toledo GmbH 1998 11780200B Printed in Switzerland 9806/2.
