Operating instructions

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METTLER TOLEDO

Gold and carat balances (JEWELRY)

• JB-L-G, JB-G/FACT

• JB-L-C, JB-C/FACT

T T

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www.mt.com/jewelry

Summary of content (36 pages)

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Operating instructions METTLER Toledo Gold and carat balances (JEWELRY) • JB-L-G, JB-G/FACT • JB-L-C, JB-C/FACT On off O/ T MET T LE R T OLE D O C F Cal /Men u On off O/ T MET TLE R T OL EDO C F Cal/ Me nu www.mt.
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Operating instructions in a nutshell Press key briefly Cal/Menu Press and hold key down until the desired display appears ▼ Piece counting* Adjustment options Unit switching* “ ŸÖEMU O/T MET 0.78 oz TLER TOLE DO C F Cal /Menu # ± automatic sequence 0.00 g 12.07 g On off O/T CAL int Cal “ Switching on MET TOLE DO F Cal SEt 10 “ SEt 20 ± ▼ “ 0.
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Contents 1 Getting to know JB balances (Gold and carat balances)............... 4 5 Functions................................................................................ 24 1.1 1.2 1.3 Introducing the JB line of balances............................................... 4 Layout of JB balances................................................................. 5 Overview of key functions............................................................ 6 5.1 5.2 5.3 Piece counting............................
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1 Getting to know JB balances (Gold and carat balances) 1.1 Introducing the JB line of balances • The JB (JEWELRY) balance line ranges from high-resolution carat balances (JB-L-C, JB-C/FACT) with a readability of 0.01 ct / 0.01 g to 0.001 ct / 0.0001 g through to precision gold balances (JB-L-G, JB-G/ FACT) with a readability of 0.01 g to 0.1 g. The weighing ranges extend from 140 g to 8.1 kg. JB-L-G, JB-G/FACT • The operation of all theses balances is identical.
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1.
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1.3 Overview of key functions The balances have two operator control levels: the weighing mode and the menu. The function of each individual key depends on the operator control level and how long the key is pressed. Weighing mode Key functions in weighing mode 0.
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2 Startup 2.1 Unpacking / standard equipment All balances are supplied in environmentally compatible packaging.
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2.
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2.4 Setting up, leveling, preparations for weighing below the balance, connecting to power supply The optimum location The correct location makes an important contribution to the accuracy of the weighing results of high-resolution balances.
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Leveling JB balances have a spirit level and two adjustable leveling feet to compensate for slight irregularities in the surface of the weighing bench. The balance is exactly horizontal when the air bubble is in the middle of the level glass.
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Adjusting (calibration) To obtain accurate weighing results, the balance must be adjusted to match the gravitational acceleration at its location. Adjusting is necessary • before the balance is used for the first time • at regular intervals during weighing service • after a change of location 2.5.
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Cal/Menu Adusting with external weight CAL E à Cal/Menu CAL à 2000.00 Cal à On off O/ T METT LER TOLED O C ------ Cal ➞ To carry out this operation, in the second menu option (Adjustment) select “CAL E” (=factory setting) (Section 4.1). ➞ Have required adjustment weight ready. ➞ Unload weighing pan ➞ Press and hold the «Cal/Menu» key down until “CAL” appears in the display, then release key. The required adjustment weight value flashes in the display.
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3 Weighing 3.1 On/off switching Switching on ➞ Remove any load from weighing pan and press «On» key briefly. On 88888888 The balance performs a display test (all segments in the display light up briefly). When zero is displayed, the balance is ready for operation. à 0.00 g Switching off Off OFF ➞ Press and hold the «Off» key down until “OFF” appears in the display. Release the key. à 3.2 Simple weighing ➞ Place weighing sample on the weighing pan. 0.00 g • 1182.03 g On ➞ Read the result.
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3.3 Taring ➞ Place empty container on the balance. 0.00 g 121.01 g On off O/ T METT LER TOLED ➞ The weight is displayed. O C F Cal /Menu # 0.00 g 95.97 g ➞ Tare: press the «#» key briefly. ➞ Add weighing sample to container. The net weight is now displayed. On off O/ T METT LER TOLED O C F Cal /Menu -121.01 g If the container is removed from the balance, the tare weight will be shown as a negative value.
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4 4.1 Menu Overview In the menu you can change the weighing unit (for certified balances, only if the national certification law allows), select additional functions and carry out various settings. A description of the individual menu options is given in Section 4.3. Notes 1) 2) 3) 4) 5) 6) This menu option is only available on JB-C/FACT and JB-G/FACT models.
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Menu operation Cal/Menu 0.01 g Opening the menu In weighing mode, press and hold down the «Cal/Menu» key until “Menu” appears in the display. Release the key: the 1st menu option is displayed. ŸÖEMU à 4.2 rESEt ± rESEt Select menu options The «±» key is used to select individual menu options with their current settings one after the other. Unit 1 g Change settings “ Unit 1 g Unit 1 kg Cal/Menu The «“» key is used to change the setting at the selected menu option.
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4.3 Description of menu options 4.3.1 Reset or recording of balance settings (1st menu option “RESET”) Reset balance settings Cal/Menu ➞ Select “Reset”, press and hold down the «Cal/Menu» key until the message “r donE” confirms that all menu settings have been reset. The balance then reverts to weighing mode and works with the factory settings (Section 4.1). rESEt r donE 0.00 g “ Recording balance settings ➞ Select “List” and hold down the «Cal/Menu» key until the message “StorEd” is displayed.
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4.3.3 FACT (3rd menu option) (only available on JB-C/FACT and JB-G/FACT models) In this menu option you can switch the fully automatic internal adjustment (calibration) FACT on or off. AutoCal “ FACt on FACt off FACT switched on This is the factory setting. The balance adjusts (calibrates) itself fully automatically. FACT switched off Note: With the certified versions of balances, this option can not be selected, i.e. FACT is always active 4.3.
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4.3.5 Functions (5th menu option / Operating Section 5) In addition to simple weighing, the following functions can be selected: F nonE “ “ “ “ F count PCS No function, simple weighing (factory setting) F count Piece counting F 100 % Percent weighing F 100 % doS 4.3.6 Weighing mode (6th menu option) This setting allows you to adapt the balance to the weighing mode. Select “Std” (standard) for all normal weighing processes or “doS” (dispensing) for dispensing liquid or powdery weighing samples.
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“ Unit 1 g Unit 1 mg … “ Unit 1 m … “ Unit 1 t tl 4.3.
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4.3.10 Autozero (10th menu option) This menu option allows you to switch the automatic zero correction on or off. When it is switched on, the zero point is automatically corrected for drift or contamination of the weighing pan. The following settings are available: “ A.zEro Autozero switched on The zero point is automatically corrected. no A.zEro Autozero switched off The zero point is not automatically corrected. This setting is advantageous for special applications (e.g. evaporation measurements).
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4.3.12 Send format (12th menu option) Note: This menu option is only available if you have selected the setting “Host” in the 11th menu option (Peripheral unit)! At this menu option you specify the data transfer format. SICS “SICS”: The MT-SICS data transfer formats are used. Please refer to the “MT-SICS Reference Manual Basic-S balances 11780447” downloadable from the Internet (www.mt.com/sics-classic). More Information please find in the Section 6.3.
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“ bd 2400 “ … bd 4800 bd 19200 “ 7b-E 7b-no “ 8b-no “ 4.3.14 Baud rate (14th menu option) Note: This menu option is only available if you have selected the setting “Host” in the 11th menu option (Peripheral unit)! The baud rate (data transfer rate) determines the speed of transmission via the serial interface. The unit is the baud (bd) = 1 bit/second. The following settings are available: 600 bd, 1200 bd, 2400 bd, 4800 bd, 9600 bd and 19200 bd.
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5 Functions 5.1 Piece counting Requirement The function “F count” must be activated in the menu (Section 4). # 0.00 g On off O/T MET TOL EDO F /Menu On off O/T MET TLER TOL EDO C F Cal Setting the reference: a reference weight must first be entered for piece counting: TLER C Cal ➞ Place empty container on the balance and tare by briefly pressing the «#» key. /Menu F SEt 10 PCS ➞ Add a number of reference pieces to container.
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5.2 Percent weighing Requirement 0.00 g The function “F 100 %” must be activated in the menu (Section 4). Set target weight 148.50 g ➞ Target weight (Reference weight, which corresponds to 100 %) in center of pan. On off O/T MET TLER TOLE DO C F Cal F /Menu SEt100 % 100.0 % ➞ Hold the «F» key down until “SEt 100 %” is displayed. ➞ Press the «“» key to select “SEt 100 %” or “SEt no %” (Percent weighing deactivated).
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5.3 Switching weight units Requirement Different weight units must be activated in the menu for unit 1 and unit 2 (Section 4). “ 64.71 g ➞ The «“» key can be used at any time to toggle between the two weighing units selected in the menu (“UNIT 1” and “UNIT 2”). 64710 mg Notes: • Switching between weight units may be blocked with certified balances, depending on national weights and measures legislation.
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6 6.1 Technical data, optional equipment Technical data Standard equipment of JB balances • Protective cover, transparent, made from Barex • AC adapter to national codes 100–240 V, 50-60 Hz, 0.3 A / 12 VDC, 0.84 A Balance power input: 8–14.5VAC, 50/60Hz, 6VA or 9.0–20 VDC, 6W • Built-in RS232C interface • Draft shield with JB-C models • All models can weigh below balance.
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Technical data gold balances JB2002-L-G JB2002-G/FACT JB3002-L-G JB3002-G/FACT JB4002-L-G JB4002-G/FACT JB6001-L-G JB6001-G/FACT JB8001-L-G JB8001-G/FACT Readability 0.01 g 0.01 g 0.01 g 0.1 g 0.1 g Maximum Load 2100 g 3100 g 4100 g 6100 g 8100 g Taring Range 0 … 2100 g 0 … 3100 g 0 … 4100 g 0 … 6100 g 0 … 8100 g Repeatability (sd) 0.01 g 0.01 g 0.01 g 0.1 g 0.1 g Linearity 0.02 g 0.02 g 0.02 g 0.1 g 0.
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6.2 Command formats Interface RS232C interface and interface accessories Every JB 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 4.3.11 – 4.3.16).
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The MT-SICS commands listed below is a selected list of available commands. For additional commands and further information please refer to the Reference Manual “MT-SICS BasicS balances 11780447” downloadable from the Internet under www.mt.com/sics-classic. ST – Send stable weight after pressing ± (transfer) key S – Send stable weight value SU – Send stable weight value with currently displayed unit Command S Send the current stable net weight value.
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6.4 Optional equipment AC adapter (universal) (EU, USA, AU, UK) 100–240 V, 50–60 Hz, 0. A 12 VDC, 0.84 A 11120270 AccuPac B-S 21254691 Rechargeable external power source for 15 hours weighing operation with no mains connection Adjustment weights Available as OIML weights (E1, E2, F1, with calibration certificate) For further details see METTLER TOLEDO Weights brochure or see www.mt.
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6.5 Dimensional drawings All dimensions in millimeters (mm) Carat balance with draft shield “mg” (165 mm) Gold balance 128.5 280 165 91.5 89 92.5 180 x 180 10.5 10.5 266 266 321 321 184.5 184.5 163.5 73.
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7 Appendix 7.1 Typical printouts from METTLER TOLEDO RS-P26, LC-P45 printers Function: Adjusting (FACT) - BALANCE CALIBRATION 12.02.2006 09:30:10 METTLER TOLEDO Type: JB3002-G/FACT SNR: 1118015657 SW: 1.20 Internal Cal. done --------- END ---------- Function: Adjusting (external) - BALANCE CALIBRATION 12.02.2006 09:40:16 METTLER TOLEDO Type: JB3002-L-G SNR: 1118015657 SW: 1.20 Weight ID: ............. Weight: 2000.00 g External Cal. done Signature: ........................
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7.2 What if ...? Error/Error message íååååì î____ï Error 1 Error 2 Error 3 Error 4 Error 6 0.000 Abort Cause Rectification Overload ➞ Remove sample from weighing pan, zero again (tare). Underload ➞ Check whether weighing pan is positioned properly. No stability ➞ Wait for stability before pressing key. • in taring or adjusting (calibration) • when reference weight for piece counting is placed on pan ➞ Ensure more stable ambient conditions.
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7.3 Maintenance and cleaning Service Disposal In conformance with the European Directive 2002/96/EC on Waste Electrical and Electronic Equipment (WEEE) this device may not be disposed of in domestic waste. This also applies to countries outside the EU, per their specific requirements. Please dispose of this product in accordance with local regulations at the collecting point specified for electrical and electronic equipment.
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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. *11780953* Subject to technical changes and to the availability of the accessories supplied with the instruments. © Mettler-Toledo AG 2007 11780953B Printed in Switzerland 0711/2.