Operating instructions METTLER TOLEDO Line of balances • AL • PL/PL-S
Operating instructions in a nutshell Press key briefly Press and hold key down until the desired display appears ▼ automatic sequence * These functions must be activated in the menu (section 4.3.2) Switching on Piece counting* Dynamic weighing* On Free factor / selectable display increment* 0.00 g 88888888 “ # 17.89 g 0.00 g 0.00 g # 0.00 g F á Switching off 12.07 g OFF ▼ PCS SEt 10 Simple weighing á 0.00 g “ 1250.00 g ± 20 PCS 244 ▼ Cal “ ▼ # “ “ 147.25 g Cal # # 15.
Contents 3 Contents 1 Getting to know L/L-S balances ....................... 4 6 Technical data, options, optional equipment .... 22 1.1 1.2 1.3 General (Types of construction, Balance features) Layout of balances .......................................... Overview of key functions ................................. 4 4 5 2 Startup .......................................................... 6 6.1 6.2 6.3 6.4 6.5 Technical data ................................................ Options ..............
Getting to know L/L-S balances line 4 1 Getting to know L/L-S balances line 1.1 General (Types of construction, Balance features) Several types of construction – uniform operation • The L/L-S balance line ranges from high-resolution analytical balances (AL) with a readability of 0.1 mg through to precision balances (PL/PL-S) with a readability of 0.001 g to 1 g. The weighing ranges extend from 51 g to 6.1 kg. • The operation of all theses balances is identical.
Getting to know L/L-S balances line 5 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.
Startup 6 2 Startup 2.1 Unpacking / standard equipment a) 1) b) 1) The standard equipment for every balance comprises: • AC adapter, to national standard • Weighing pan, Weighing pan sup-port, draft shield element (de-pending on model) • Draft shield standard supply with models of 0.1 /1 mg readability (for other models available as an optional extra) • Operating instructions • Protective cover for compact balances PL-S (placed on the balance over the weighing cell cone) with instruction sheet.
Startup 7 Antitheft device Models in the L/L-S balance line are provided with a lug for attaching an antitheft device (see optional equipment in Section 6.4). Preparations for weighing below the balance To carry out weighing operations below the balance, the special cover on the underside of the balance must be slackened (Note: never put the balance without the protective cover over its cone down on its head, only on its side!), turned through 180° and retightened.
Startup 8 Notes • Batteries are not included in the standard supply. • Battery operation is automatically overridden when the AC adapter is connected to the AC power supply. • To prolong battery (disposable or rechargeable) life, it is advisable to activate «Auto shut» in the menu (see Section 4.3.7). • All discarded batteries must be disposed of in an environmentally responsible manner. No attempt must be made to incinerate or disassemble them.
Startup 9 2.4 Adjusting (calibration) Cal CAL ▼ Cal 2000.00 Cal -----▼ Cal 0.00 Cal -----▼ CAL donE ▼ 0.00 g To obtain accurate results, the balance must be left switched on for 60 minutes to reach operating temperature before starting the adjustment procedure. ➞ Have required adjusting weight ready. ➞ Unload weighing pan. ➞ Press and hold the «Cal» key down until “CAL” appears in the display. Release key. The required adjustment weight value flashes in the display.
Weighing 10 3 Weighing 3.1 On/Off switching On 88888888 Switching on ➞ Remove any load from weighing pan and press «On» key briefly. The balance performs a display test (all segments in the display light up briefly). When zero is displayed, the balance is ready for operation. ▼ 0.00 g OFF Off ▼ Switching off ➞ Press and hold the «Off» key down until “OFF” appears in the display. Release the key. 3.2 Simple weighing ➞ Place weighing sample on the weighing pan. 0.
Menu 11 4 Menu 4.1 Overview In the menu you can change the weighing unit (for certified balances, only if national weights and measures legislation allows), select additional functions and carry out various settings. A description of the individual menu options is given in Section 4.3.
Menu 12 4.2 Menu operation Menu Opening the menu In weighing mode, press and hold down the «Menu» key until “MENU” appears in the display. Release the key: the 1st menu option is displayed. 0.01 g Ÿ≈ENU ▼ rESEt ± Select menu options ±» key is used to select individual menu options with their current settings one The «± after the other.
Menu 13 4.3.
Menu 14 4.3.5 Weighing unit 2 (5th menu option “UNIT 2”) “» key, the desired second If it is required to show the weighing result in weighing mode in an additional unit by pressing the «“ weighing unit can be selected in this menu option. The same weighing units are available as under “UNIT 1”, with the exception of the tael units (“H tl”, “S tl” and “t tl”). 4.3.6 Autozero (6th menu option / see overview and notes in Section 4.
Menu 15 4.3.9 Send mode (9th menu option / see overview and notes in Section 4.1) Note: This menu option is only available if the “Host” setting was selected in the 8th menu option (Peripheral unit)! It specifies how a value is transferred to a peripheral device. S.oFF Send mode switched off. S. o FF ±» key S.Stb The next possible stable value will be transferred after the «± “ has been pressed. S.Cont All values are transferred automatically. S.Stb S.Auto Only stable values are transferred automatically.
Menu 16 4.3.12 Bit/Parity (12th menu option / see overview and notes in Section 4.1) Note: This menu option is only available if the “Printer” or “Host” setting was selected in the 8th menu option (Peripheral unit)! It sets the character format for the peripheral device connected to the balance. 7b–E 7 data bits/even parity 7b-E 7b–no 7 data bits/no parity “ 8b–no 8 data bits/no parity 7b-no 7b–odd 7 data bits/odd parity 8b-no 7b-odd 4.3.13 Handshake (13th menu option / see overview and notes in Section 4.
Functions 17 5 Functions Settings and values saved under a given function are retained until they are replaced or another function is selected. The «C» key can be used to cancel the procedure currently in progress. 5.1 Piece counting Requirement The function “F count” must be activated in the menu (Section 4). 0.00 g F SEt 10 “ SEt 20 20 ± 240 “ PCS ➞ Place empty container on the balance and tare by briefly pressing the #» key.
Functions 18 101.60 “ 150.88 g “ 101.60 % Switching between percent weighing and weight display ➞ Place weighing sample in centre of pan. The weight of the sample is displayed as a percentage of the target weight. “» key. The weight is displayed (in unit 1, and if the key is pressed ➞ Press the «“ again, in unit 2, provided this function is activated). % “» key again. ➞ Return to display in percent: pressing the «“ 5.
Functions 19 Dynamic weighing with manual start (F dYn M) 0.00 g “ á 0.00 g “» key can be used select the dynamic weighing. The display shows the ➞ The «“ symbol á. ➞ Load weighing sample. á • 257.35 g ▼ á -- 3 -- … ± á -- 1 -▼ á ±» key. ➞ Start weighing with the «± During the weighing time, a “count down” runs in the display. ➞ Read off result.
Functions 20 5.4 Plus-minus weighing The plus-minus weighing function enables the parts or quantities dispensed on the weighing pan to be compared with a target weight and tolerances set by the user. Symbols in the display (ÇokÉ) help the operator to assess the weighing result quickly. Requirement The function “F PM” must be activated in the menu (Section 4). 0.00 g 15.13 g F - ok + tArGEt ± * ok 15.13 g ▼ - + toL≠ % ▼ “ - + % - + % 1.00 “ … 1.01 - + 5.00 ok ± 15.
Functions 21 17.89 g # F F FAC Ÿ≈ # # 0.9999 … 1/10d 1.0000 # 1/10d # ± 0.9500 StEP≠ ▼ # # 0.02 … “ 0.01 # “ # ± 0.05 17.00 Entering the free factor and/or the display increments ➞ Hold the «F» key down until “F FAC M” or “F FAC d” appears in the display. “» key to select “FAC M” / “FAC d” or “noFAC M” / “noFAC d” ➞ Press the «“ (Function deactivated). ➞ Release the key. Either the factor 1 appears as default value or the factor that was saved most recently.
Technical data, options, optional equipment 22 6 Technical data, options, optional equipment 6.1 Technical data Protection • Protected against dust and water • Pollution degree: 2 • Installation category: class II • EMC: see declaration of conformity Standard equipment of L/L-S balances • AC adapter to national standard as per list in Section 6.4. Balance power input 6-14,5VAC, 50/60Hz, 4VA or 7-20VDC, 4W • Draft shield (on models with 0.
Technical data, options, optional equipment 23 Readability Max. capacity Repeatability (s) Linearity –/+ Sensitivity drift ppm/ °C Typical stabilization time in s Adjustment weight external (optional equipment) Construction External dimensions of balance (W/D/H) in mm External dimensions of packaging (W/D/H) in mm Weighing pan in mm Max. height above weighing pan in mm Net weight (with packaging) kg Level indicator Number of leveling screws PL83-S 0.001 g 81 g 0.0008 g 0.002 g 10 2.5 PL153-S 0.
Technical data, options, optional equipment 24 Readability Max. capacity Repeatability (s) Linearity –/+ Sensitivity drift ppm/ °C Typical stabilization time in s Adjustment weight external (optional equipment) Construction External dimensions of balance (W/D/H) in mm External dimensions of packaging (W/D/H) in mm Weighing pan in mm Max. height above weighing pan in mm Net weight (with packaging) kg Level indicator Number of leveling screws PL1501-S2 *) 0.2 g 1510 g 0.08 g 0.2 g 10 1.5 PL3001-S 0.
Technical data, options, optional equipment 25 6.3 MT-SICS Interface commands and functions Many of the balances used have to be capable of integration in a complex computer or data acquisition system. To enable you to integrate balances in your system in a simple manner and utilize their capabilities to the full, most balance functions are also available as appropriate commands via the data interface.
Technical data, options, optional equipment 26 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 for B-S/L/L-S balances 11780447” downloadable from the Internet under www.mt.com/pl or www.mt.com/al. S – Send stable weight value Command S Send the current stable net weight value. SI – Send value immediately Command SI Send the current net weight value, irrespective of balance stability.
Technical data, options, optional equipment 27 6.4 Optional equipment 11103740 11103744 11103742 11103741 11103743 11103745* 220-240V/50Hz/100mA Output: 12V … 2.08A • Universal (bench version) 100-240V / 50/60Hz/0.
Technical data, options, optional equipment 28 6.5 Dimensional drawings (in mm) PL-S (compact construction) with draft shield 224.4 194 194 67 137 PL-S (compact construction) without draft shield 224.4 287 PL (standard construction) with “mg” draft shield (low) 238 238 111 PL (standard construction) without draft shield 335.2 335.
Technical data, options, optional equipment 29 335.
Appendix 30 7 Appendix 7.1 Typical printouts from METTLER TOLEDO GA42 and LC-P45 printers Function: Adjusting -BALANCE CALIBRATIONDate: ................ Time: ................ METTLER TOLEDO Type: PL1502 SNR: 1120053108 SW: 1.0 Weight ID: ............ Weight: 1000.00 g External Cal. done Signature: ........................ --------- END --------- Function: Piece counting Printout with reference weight ---- PIECE COUNTING ---APW: 0.99 g Out of: 10 PCS 27.
Appendix 31 7.2 What if ...? Cause Rectification íååååì Overload ➞ Remove sample from weighing pan, zero again (tare). î____ï Underload ➞ Check whether weighing pan is positioned properly. Error 1 No stability • in taring or adjusting (calibration) • when reference weight for piece counting is placed on pan ➞ Wait for stability before pressing key. ➞ Ensure more stable ambient conditions.
Appendix 32 7.4 Maintenance and cleaning Service Regular servicing of your balance by a service technician prolongs its working life. Ask your METTLER TOLEDO dealer for details of servicing options. Cleaning Wipe housing and weighing pan with a soft, lint-free cloth, and – if necessary – with a mild cleaning agent, e.g. soap solution. Protect balance and weighing pan from soiling. Soiled In-use covers can be replaced on all balance types (see Section 6.3).
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