Metrohm 794 Basic Titrino Instructions For Use Manual
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Metrohm 794 Basic Titrino Instructions For Use Manual

Metrohm 794 Basic Titrino Instructions For Use Manual

All-purpose titrator
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CH-9101 Herisau/Switzerland
E-Mail
info@metrohm.com
Internet
www.metrohm.com
794 Basic Titrino
Program version 5.794.0010
Instructions for Use
8.794.1003
02.2002 / pkl

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  • Page 1 CH-9101 Herisau/Switzerland E-Mail info@metrohm.com Internet www.metrohm.com 794 Basic Titrino Program version 5.794.0010 Instructions for Use 8.794.1003 02.2002 / pkl...

  • Page 3: Table Of Contents

    Description of the remote control commands ........... 102 Properties of the RS 232 Interface..............125 3.3.1 Handshake....................125 3.3.2 Pin Assignment ..................129 3.3.3 What can you do if the data transfer does not work? ........ 131 794 Basic Titrino...
  • Page 4 "P2O5Fert""....................180 Validation / GLP....................183 Warranty and conformity ................... 184 6.5.1 Warranty..................... 184 6.5.2 EU Declaration of conformity..............185 6.5.3 Certificate of Conformity and System Validation ........186 Scope of delivery and ordering designations ........... 187 Index.........................190 794 Basic Titrino...

  • Page 5: Introduction

    1.1 Instrument description Introduction 1.1 Instrument description The 794 Basic Titrino is an all-purpose titrator. Titration modes of the 794 Basic Titrino are constant or – depending on the titration curve – variable dosing of the titration reagent and Endpoint-Titration.

  • Page 6: Controls And Parts

    1.2 Controls and parts 1.2 Controls and parts Front view of instrument: 794 Basic Titrino...
  • Page 7 Identical with key <START> of the separate keypad. Indicator lamps: "Statistics" Lamp is on when the "statistics" function (calculation of mean and standard deviation) is on. "Silo" Lamp is on when silo memory (for sample data) is on. 794 Basic Titrino...
  • Page 8 1.2 Controls and parts Rear view of instrument: 794 Basic Titrino...
  • Page 9 Analog output for the connection of a recorder Connection for power cable With power supplies where the voltage is subject to severe HF disturbances, the Ti- trino should be operated via an additional power filter, e.g. Metrohm 615 model. Mains switch Earthing socket...

  • Page 10: Manual Operation

    Clears values, set special values. ENTER Stores values. STOP Stops methods. QUIT Quits inquiries, waiting times, printing. START Starts methods. The third functions (inscriptions in the triangle) on the keys of the keypad are used for formula entry, see page 52. 794 Basic Titrino...

  • Page 11: Principle Of Data Input

    • With key <QUIT> you leave an inquiry or a group of inquiries, it always moves you one level up. • In this example you leave the menu "configuration" DET pH ******** by pressing <QUIT> and return to the display of ti- tration mode and the chosen method. 794 Basic Titrino...

  • Page 12: Text Input

    1. Press <USER METH>, place the cursor to ">store method" and press <ENTER>. 2. Open the text writing mode directly: Press key <<>. 3. <CLEAR> now deletes the characters one by one or you can add additional characters. 794 Basic Titrino...

  • Page 13: Tutorial

    The next inquiry "fecha" (date) of the group "ajustes varios" (auxiliaries) is shown. You can open this inquiry by pressing <ENTER> >ajustes varios too and go through all the inquiries of this group this fecha 2002-01-02 way. 794 Basic Titrino...
  • Page 14 • Press <QUIT> once again to exit the "configuration" menu and return to the standby state. All the dialog texts will now be displayed in Spanish. DET pH ******** If you prefer English as the displayed dialog lan- guage, proceed as before and select "English". 794 Basic Titrino...

  • Page 15: Development Of A Method, Titration Of An Acid

    The first line now shows the mode "DET pH" and the name of the chosen method (here "********" because this method has not been saved under a own name until now). Of interest is the second line, which shows the equivalence point found. 794 Basic Titrino...
  • Page 16 The Titrino prompts for the calculation of the next result. Quit the formula entry by pressing <QUIT> twice. 2 x <QUIT> In order to be able to calculate the result, enter the calculation constants used in the for- mula. 794 Basic Titrino...
  • Page 17 Display of the result <SELECT> Press <SELECT> repeatedly until ">display results" • appears in the display. DET pH ******** >display results <ENTER> Press <ENTER> to move to the result display. • DET pH ******** 3.80 g/l 794 Basic Titrino...
  • Page 18 01102 794.0010 date 2002-01-03 time 17:34 Initial pH, mode and method name pH(init) 2.88 DET pH ******** smpl size 2 ml Volume and pH value of EP1 2.083 ml 7.64 Calculated result 3.80 g/l manual stop −−−−−−−−−−−−−−−− 794 Basic Titrino...
  • Page 19 The development of your method is now complete. Before we store it in the method mem- ory, you should check it again. Prepare a fresh sample and restart the titration with <START>. If everything appears to be all right, you can now store the method in the method mem- ory. 794 Basic Titrino...

  • Page 20: Storage And Loading Of Methods

    (it shows all methods of the method memory one af- direct entry ter the other) or by directly enter the method name. <ENTER> • Load the method with <ENTER> DET pH Acid The method is ready to titrate. 794 Basic Titrino...

  • Page 21: Ph Calibration

    The calibration data can be viewed at any time under the <CAL.DATA> key. Our calibra- tion data are stored under ">input 1". The calibration report can be printed out at any time with the key sequence: <PRINT><CAL.DATA><ENTER> 794 Basic Titrino...

  • Page 22: Statistics, Acid Capacity Of Drinking Water

    The "c" in pHc shows that the electrode assembly has been calibrated. The second line shows a "control bar", which indicates the control deviation of the current measured value from the set end point. pHc 6.34 0.426 ml #====== 794 Basic Titrino...
  • Page 23 Press <MEAS/HOLD>. The pH value of your sample is displayed. You can stop the measurement with a second <MEAS/HOLD>. Statistics calculations Now switch on the statistics calculations. Press <STATISTICS>. The "Statistics" LED is on. Duplicate determinations are now performed. • Perform 2 titrations. 794 Basic Titrino...
  • Page 24 We shall leave them switched on and proceed to the <ENTER> next inquiry. Mean value of 2 single determinations. >statistics • Enter "3" to include an additional determination. mean: <3> <ENTER> 2 × <QUIT> • Quit the inquiry. Perform another titration. 794 Basic Titrino...
  • Page 25 With <PRINT><REPORTS><ENTER> you can print a fresh report. With <PRINT> <STATISTICS><ENTER> you can print a statistics overview, in this report the deleted result is marked with a "∗" in the report. 794 Basic Titrino...

  • Page 26: Configuration, Key

    Models with RS232C interface Selection of the curve for the output at the analog record: output (U, dU/dt, V, dV/dt, U(rel), T Voltage dU/dt: Measured value drift Volume dV/dt Volume drift U(rel): Control deviation with SET Temperature with MEAS T 794 Basic Titrino...
  • Page 27 Handshake (HWs, HWf, SWline, SWchar, none) handshake: see page 125ff. Control via RS232 interface (ON, OFF) RS control: "OFF" means that the receipt of commands via the RS232 interface is blocked. Data output is possible. 794 Basic Titrino...

  • Page 28: Selection Of The Mode, Key

    These standard modes are equipped with a set of standard parameters. They only need few settings in order to be ready to work. TIP is an empty "shell". The TIP sequence has to be defined with <DEF>, see page 62. 794 Basic Titrino...
  • Page 29 Fortuin inter- pensed up to the endpoint of the second derivative with polation. (EPX in mL). a Metrohm correction for the distortion of the curve from Recognition criteria: superimposed jumps. Can all EP's Evaluation...

  • Page 30: Parameters, Key

    Size of volume increment (0...9.999 mL) V step 0.10 ml Dosing step. Small volume increments are needed to determine blank values or to assure accuracy with highly unsymmetrical curves. Selection of size of the increment, see page 33. 794 Basic Titrino...
  • Page 31 Dosing rate for start volume (0.01...150 mL/min, max.) **titr. <CLEAR> sets "max.". Maximum rate depends on the Exchange Unit: Exchange Unit max. 5 mL 15 mL/min 10 mL 30 mL/min 20 mL 60 mL/min 50 mL 150 mL/min 794 Basic Titrino...
  • Page 32 Stop at measured value (input range dependent on stop pH measured variable: **titr. 20.00, OFF 0... ± U, Ipol: 0... 2000 mV, OFF ± Upol: 0... 200.0 µA, OFF) ± <CLEAR> sets "OFF". "OFF" means that the criterion is not monitored. 794 Basic Titrino...
  • Page 33 Recognition of EP's which fulfill the EP criterion. (all, EP recognition: greatest, last, window, OFF) Selection of equivalence point recognition: "all": All equivalence points are recognized. "greatest": Only the greatest (steepest) equivalence point is recognized. "last": Only the last equivalence point is recognized. 794 Basic Titrino...
  • Page 34 Request of sample size after start of titration (value, unit, req.smpl size: all, OFF) "all" requests the value, then the unit. Pulse output on I/O line "activate" (L6, pin 1) of the activate pulse: remote socket (ON, OFF) see page 163. 794 Basic Titrino...
  • Page 35 "signal drift" is set "OFF", the measured values are ac- quired after a fixed equilibration time. The titration is terminated according to the first criterion Stop conditions which is met. Evaluations and calculations are carried out. Calculations Data are outputted. Data output 794 Basic Titrino...
  • Page 36 The standard value of 10.0 µL is suitable for most cases. The EP's are evaluated according to a special METROHM procedure which is so sensitive that even weak equivalence points are determined correctly. Equivalence Point Criteria.
  • Page 37 This can produce "ghost EP's"! The EP's are localized with an algorithm which is based on Fortuin and has been adapted by METROHM for numeric procedures. Here, the greatest change in the measured value is sought (∆...
  • Page 38 1 EP1, the second is not recognized. EP1 is marked as EP1 + to indicate EP window 1 that more than one EP has been found in the window EP 1 lower lim. 1 V/mL 794 Basic Titrino...
  • Page 39 In non-aqueous solutions, the half neutralization potential (HNP) is often used instead of pK. The HNP is evaluated accordingly. A start volume must be smaller than half of the equivalence point volume of the first EP. The pK/HNP values are available for calculation as C6X. 794 Basic Titrino...

  • Page 40: Parameters For Set

    This parameter determines primarily the addition rate outside the control range, see also page 42. The maximum rate depends on the Exchange Unit: Exchange Unit max. 5 mL 15 mL/min 10 mL 30 mL/min 20 mL 60 mL/min 50 mL 150 mL/min 794 Basic Titrino...
  • Page 41 Factor for relative start volume (0...±999999). cond. Calculated as: start V (in mL) = factor ∗ sample size Dosing rate for start volume dos.rate max. ml/min (0.01...150 mL/min, max.) **titr. <CLEAR> sets "max.". The maximum rate depends on the Exchange Unit: 794 Basic Titrino...
  • Page 42 "OFF" means that the test is not performed. Titration temperature (-170.0...500.0°C). temperature 25.0 °C Temperature is measured at the start of the titration if a cond. T sensor is connected. The value is used for temperature compensation in pH titrations. 794 Basic Titrino...
  • Page 43 "delete n": Deletion of single results with the index n. "delete all": The entire table is deleted. Delete data from sample number n (1...20) delete The deleted result is removed from the statistics calculation. 794 Basic Titrino...
  • Page 44 OFF) cond. "all" the value and the unit will be requested. Pulse output on I/O line 6 (L6, pin 1) of the remote activate pulse: socket (first, all, cond., OFF) cond. see page 163. 794 Basic Titrino...
  • Page 45 (Start conditions) Then the titration is performed to the first, then to the sec- Titration: ond end point. end point end point Calculations Calculations are carried out. Data output Data are outputted. (Reconditioning) Conditioning is carried out. 794 Basic Titrino...
  • Page 46 You can get an initial, good approximation for the start of the control range from the intersection point of the tangents: "steep curves" "flat curves" U/mV U/mV Control range Control range V/mL V/mL 794 Basic Titrino...
  • Page 47 5 µL (50 mL) 60 µL/min 30 µL/min 15 µL/min Same t(delay) with a range of extremely small volume increments means different switch- off points. In case the stop criterion "drift" is used, the stopping point remains the same. 794 Basic Titrino...
  • Page 48 Titration time is too long. • Set higher "min.rate". • Set higher "max.rate". • Lower "dynamics". Scatter in titration results is too • Set "min.rate" lower. great. 794 Basic Titrino...

  • Page 49: Parameters For Meas

    (-1270...1270 mV, in steps of 10 U(pol) 400 mV is inquired. Electrode test (OFF, ON) electrode test: Test for polarized electrodes. Performed on changeover from the inactive standby mode to a measurement. "OFF" means that the test is not 794 Basic Titrino...
  • Page 50 Only id1, id1 & id2, all three id's or no inquiries. Request of sample size after start of titration (value, unit, req.smpl size: all, OFF) Pulse output on line "activate" (L6, pin 1) of the remote activate pulse: socket (ON, OFF) see page 163. 794 Basic Titrino...

  • Page 51: Parameters For Cal

    Electrode identification (up to 8 characters). electr.id Calibration with sample changer (ON, OFF) sample changer cal: In calibrations with a sample changer, there are no hold points in the calibration sequence for inputs. Calibration temperature and pH values of the buffers 794 Basic Titrino...
  • Page 52 "delete n": Deletion of single results with the index n. "delete all": The entire table is deleted. Delete data from sample number n (1...20) delete The deleted result is removed from the statistics calculation. 794 Basic Titrino...
  • Page 53 Data are output. The calibration data are available for calculation: C46: pHas C47: Electrode slope Calibration data can be viewed at any time with the <CAL.DATA> key and the calibration report printed out using the key sequence <PRINT><CAL.DATA><ENTER>. 794 Basic Titrino...

  • Page 54: Parameters For Tip

    Measured quantity (pH, U, Ipol, Upol, T, OFF) meas.mode: Quantity for measurements with key <MEAS/HOLD>. Measuring input (1, 2, diff.) meas.input: Inquiry only with measured quantities pH and U. Measuring input 1 or 2 or differential amplifier; connection of electrodes, see page 155. 794 Basic Titrino...
  • Page 55 "OFF" means that the test is not performed. Temperature (-170.0...500.0 °C) temperature 25.0 °C Temperature for pH compensation. Its value has to be entered manually even if a T sensor is connected. 794 Basic Titrino...

  • Page 56: Result Calculations

    • To delete a complete formula press <CLEAR> repeatedly until only RSX remains in the display. Confirm with <ENTER>. If a formula is stored with <ENTER>, result text, number of decimals and result unit will be requested: 794 Basic Titrino...
  • Page 57 Determination time. Volume drift for SET with conditioning. Temperature. Dispensed start volume. Asymmetry-pH (calibration). Electrode slope (calibration). C51...C59 Fix EP for DET and MET. C61...C69 pK/HNP values for DET and MET. C70...C79 Temporary variables for calculations in TIP. 794 Basic Titrino...
  • Page 58 For the calculation, the operands are used, which were introduced in the formula. The inputs method specific and are store in method memory. The calculation report can be printed with the key sequence: <PRINT><SELECT>(press key repeatedly until "calc" appears in the display)<ENTER> 794 Basic Titrino...

  • Page 59: Statistics Calculation

    "delete n": Deletion of single results with the index n. "delete all": The entire table is deleted. Delete data from sample number n (1...20) delete The deleted result is removed from the statistics calculation. ) 794 Basic Titrino...
  • Page 60 • On method change, the old statistics table is cleared and the statistics instructions of the new method followed. • Old results in the statistics table can be deleted with "delete all" (<PARAM>, ">statistics", "res.tab:"). 794 Basic Titrino...

  • Page 61: Common Variables

    Results (RSX), endpoints (EPX), variables (CXX), and means (MNX) can be assigned. The values of the common variables remain in force for C39= all methods until they are overwritten or deleted. They can be viewed under the <CONFIG> key. Delete allocation with <CLEAR>+<ENTER>. 794 Basic Titrino...

  • Page 62: Data Output

    Combined titration curve and 1st derivative (with DET) scalc full Full report of silo calculations. scalc srt Short report of silo calculations. param Parameter report. calc Report with formulas and operands. calib Calibration data. Form feed on printer. 794 Basic Titrino...
  • Page 63 Titr 1 sign: page 23) and manual signature ============ Titration curve 794 Titrino 01102 794.0010 date 2002-01-03 time 08:54 start V 0.000 ml DET pH ******** Scaling of volume and pH axis 1.0 ml/div dpH=1.0/div ============ 794 Basic Titrino...
  • Page 64 Combined 1st derivative and titration curve (DET) comb Full report of silo calculations scalc full Short report of silo calculations scalc srt All reports Complete report sequence of the last REPORTS determination, as defined under the <DEF> key in the method 794 Basic Titrino...
  • Page 65 >dispaly mean m(RS1)...m(RS9),n individual values absolute standard deviation >display std.deviation s(RS1)...d(RS2) various (error) messages >display messages with MEAS >display meas.val with CAL >display calibration pH(as) and slope with TIP >display temp. variables C70...C79 794 Basic Titrino...

  • Page 66: Tip, Titration Procedure

    Confirm the step with <ENTER> and enter the parameter for the selected step, see below. The request for the second step follows etc. Up to 30 steps can be selected. 2 x <QUIT> On completion of the sequence definition, exit the inquiry with <QUIT>. 794 Basic Titrino...
  • Page 67 16 info The TIP sequence is held and the message displayed. characters Continue the sequence with <START>, <QUIT> or <ENTER>. The parameters of the sequence can be viewed and changed at any time under the <PARAM> key. 794 Basic Titrino...
  • Page 68 (with <START>, <QUIT> or <ENTER>). TIP higher-level calculations are carried out. TIP calculations TIP data output Data output in TIP. Attention: TIP contains no more determination data, i.e. curves must be put out within the submethods. 794 Basic Titrino...
  • Page 69 In TIP calculations variables C7X from different submethods can be used, formula entry see page 52. Note: We recommend to execute the calculations in TIP, as they can only be recalculated in TIP itself, e.g. with a different sample size. 794 Basic Titrino...

  • Page 70: Method Memory, Keys

    For safety, you are again asked if you really wish to delete the method. With <ENTER> it is deleted, with <QUIT> you return to the working memory. If a method name is entered which is not found in the method memory, the selected value blinks. 794 Basic Titrino...
  • Page 71 The contents of the method memory can be printed with the key sequence <PRINT><USER METH><ENTER> Document your methods (e.g. parameter report, def. report and C-fmla report)! With a PC and the 6.6008.XXX Vesuv program, you should carry out a complete method backup from time to time. 794 Basic Titrino...

  • Page 72: Calibration Data, Key

    If an electrode identification has been entered in the CAL mode, it is automatically entered after the calibration. The calibration report with the current measuring input data can be printed at any time with the key sequence <PRINT><CAL.DATA><ENTER>. 794 Basic Titrino...

  • Page 73: Current Sample Data, Key

    Sample size (6-digit number: ±X.XXXXX) smpl size 1.0 g Entry using keypad, via balance or via barcode reader. Unit of sample size (g, mg, mL, µL, pc, no unit or up to smpl unit: 5 characters) Select unit with <SELECT>. 794 Basic Titrino...

  • Page 74: Silo Memory For Sample Data

    For mixed operation, manual input of identifications and sample sizes from a balance, the values from the balance are sent into the line in which editing just takes place. Confirmed the data with <ENTER> at the Titrino. 794 Basic Titrino...
  • Page 75 To show that a line has been deleted, they are marked with " ∗ ". The symbol ∗ indicates that the line has been deleted. Deleted lines can be reactivated if the appropriate line is re-edited. 794 Basic Titrino...
  • Page 76 Silo memory contains 35 lines. 6 of 35 lines have been processed. Next free line is 36. The processed lines have been copied to the end of the silo memory: your silo is filled up to line 794 Basic Titrino...

  • Page 77: Storing Determination Results And Silo Calculations

    <PRINT><USER METH><ENTER> the number of free bytes is shown.) Result name, value and unit are stored. The memory requirements can be estimated as follows: Result with text (8 characters) and unit (5 characters): 32 bytes Measured value C40, value without unit: 22 bytes 794 Basic Titrino...

  • Page 78: Silo Calculations

    Which sample identifications must match in order to match id: combine of the results (id1, id1&2, all, OFF) "OFF" means no matching ids, all samples which have been processed with the same method are combined, see examples below. 794 Basic Titrino...
  • Page 79 • Results will be overwritten in the silo recalculation, as long as the silo line is marked with "/". If you do not wish such an input, e.g. because you work off an urgent sample between a series, disconnect the silo. 794 Basic Titrino...
  • Page 80 2. Assignment of temporary variables C7X for TIP 3. Calculation of means MNX 4. Assignment of silo results C24 and C25 5. Silo calculations 6. Assignment of means C26 and C27 from silo calculations 7. Assignment of common variables C3X 794 Basic Titrino...

  • Page 81: Operation Via Rs232 Interface

    Entries which start with $, trigger some- thing. They are thus called triggers. Values of objects can not only be queried, they can also be modified. Values are always entered in quotes, for example: &Config.Aux.Language "english" 794 Basic Titrino...

  • Page 82: Call Up Of Objects

    'Language' at this level: ..L quire n+1 preceding dots. Change from node 'Language' via the root to If you must jump back to the root, enter a pre- node 'Mode': &M ceding &. 794 Basic Titrino...

  • Page 83: Triggers

    Examples: Querying the value of the baud rate: &Config.RSSet.Baud $Q Querying all values of the node "RSSet": &Config.RSSet $Q Querying the path of the node "RSSet": &Config.RSSet $Q.P Start mode: &Mode $G Querying the detailed status: $D 794 Basic Titrino...

  • Page 84: Status Messages

    Instrument in the CAL mode, requesting calibration temperature. .Req.Temp: Instrument in the CAL mode, measuring calibration temperature. .Meas.Temp: Instrument in the CAL mode, requesting pH of buffer 1. .Req.Buf1: Instrument in the CAL mode, measures buffer 1. .Meas.Buf1: 794 Basic Titrino...
  • Page 85 $S .Mode.XXXX.QuickMeas: The instrument gives the status from which it has been stopped. The detailed status information is therefore identical to for the global status $G. Violation of monitored limits with action "end" give the status message $S.Mode.XXX.Inac;EYYY. 794 Basic Titrino...

  • Page 86: Error Messages

    Exit: <QUIT> and ensure settings of appropriate parameters at both devices are the same. Overrun error. At least 1 character could not be read. Exit: <QUIT> The internal working-off buffer of the Titrino is full (>82 characters). Exit: <QUIT> 794 Basic Titrino...
  • Page 87 Exit: The error message disappears on next startup. E131 No EP set for SET. Exit: The error message disappears on next startup. E132 Silo empty and it has been started with open silo or empty silo has been opened. Exit: Send a silo entry. 794 Basic Titrino...
  • Page 88 Exit: The error message disappears on next start. Attention: The data of this sample will not be stored. E172 In TIP, a QuickMeas was started, without defining a measuring quantity. Exit: The error message disappears on next start or &Mode.QuickMeas $S. 794 Basic Titrino...

  • Page 89: Remote Control Commands

    Method parameters ├ UserMeth Administration of the internal user-memory for methods ├ Config Instrument configuration ├ SmplData Sample specific data ├ Info Current Data ├ Assembly Component data ├ Setup Setting the operating mode └ Diagnose Diagnostics program 794 Basic Titrino...
  • Page 90 │ │ ├ .C70 for C70 RSX,EPX,CXX 3.2.2.10. │ │ ├ up to C79 ├ .CFmla Calculation constants │ ├ Calculation constant C01 │ │ ├ .Value Input of value 0...±999 999 3.2.2.11. │ ├ up to C19 794 Basic Titrino...
  • Page 91 │ ├ .IReq Request of Id's after start id1, id1&2, all, OFF 3.2.2.25. │ ├ .Sreq Request of smpl size after start value, unit, all, OFF ditto │ ├ .ActPulse Output of a pulse ON, OFF 3.2.2.26. 794 Basic Titrino...
  • Page 92 │ ├ .IReq Request of Id's after start id1, id1&2, all, OFF 3.2.2.25. │ ├ .SReq Request of sample size after start value, unit, all, OFF ditto │ ├ .ActPulse Output of a pulse ON, OFF 3.2.2.26. 794 Basic Titrino...
  • Page 93 .IReq Request of Id's after start id1, id1&2, all, OFF 3.2.2.25. │ ├ .SReq Request of smpl size after start value, unit, all, OFF ditto │ ├ .ActPulse Output of a pulse first, all, cond., OFF 3.2.2.26. 794 Basic Titrino...
  • Page 94 Status of statistics calculation ON, OFF 3.2.2.23. │ ├ .MeanN No.of individual determinations 2...20 ditto │ ├ .ResTab Result table │ │ ├ .Select original,delete n,delete all ditto │ │ ├ .DelN Deletion of individual results 1...20 ditto 794 Basic Titrino...
  • Page 95 Measuring input 1, 2, diff. ditto │ ├ .Ipol Polarization current 0...1...±127 ditto │ ├ .Upol Polarization voltage 0...400...±1270 ditto │ ├ .PolElectrTest Test for polarized electrodes ON, OFF ditto │ ├ .Temp Titration temperature -170.0...25.0...500.0 ditto 794 Basic Titrino...
  • Page 96 │ │ ├ .Quantity Measured quantity read only ditto │ │ ├ .Bytes Method size in bytes read only ditto │ │ ├ .Checksum Checksum of method read only ditto ├ for each method 794 Basic Titrino...
  • Page 97 │ ├ .Handsh Handshake HWs, HWf, SWchar, │ │ SWline, none ditto │ ├ .ComVar Values of common variables │ ├ .C30 0... ±999 999 3.2.2.58. │ ├ up to C39 0... ±999 999 │ 794 Basic Titrino...
  • Page 98 .DelLine Delete silo line 3.2.2.63. │ │ ├ .LineNum Line number 1...99, OFF ditto │ ├ .DelAll Delete silo line 3.2.2.64. │ ├ .CycleLines Cycle lines ON, OFF 3.2.2.65. │ ├ .SaveLines Save results ON, OFF 3.2.2.66. 794 Basic Titrino...
  • Page 99 │ │ ├ .C41 Titration end volume read only/read+write │ │ ├ .C42 Titration time read only/read+write │ │ ├ .C43 Volume drift in SET read only/read+write │ │ ├ .C44 Titration temperature read only/read+write 794 Basic Titrino...
  • Page 100 │ │ ├ .ERC ERC from DET read only ditto │ ├ .MeasPt Entry in measuring point list │ │ ├ .Index Index of entry read only 3.2.2.80. │ │ ├ X coordinate read only ditto 794 Basic Titrino...
  • Page 101 24 ASCII char 3.2.2.81. │ │ ├ Text line 2 up to 24 ASCII char ditto │ ├ .Assembly Assembly │ ├ CycleTime Cycle time read only 3.2.2.82. │ ├ Volume of Exchange unit read only ditto 794 Basic Titrino...
  • Page 102 Automatic output of EOD ON, OFF 3.2.2.87. │ ├ .SetLines Set I/O lines ditto │ │ ├ Signal on L0 active,inactive,pulse,OFF ditto │ │ ├ up to L 3 │ ├ .ResetLines Reset I/O lines ditto │ 794 Basic Titrino...
  • Page 103 │ │ ├ When start is initiated ON, OFF ditto │ │ ├ When stopped ON, OFF ditto │ │ ├ Begin of method ON, OFF ditto │ │ ├ End of process ON, OFF ditto 794 Basic Titrino...
  • Page 104 .Initialise Set default values 3.2.2.100. │ ├ .Select Selection of branch ActMeth,Config,Silo,Calib │ Assembly,Setup,All ditto ├ .RamInit Initialization of working mem. 3.2.2.101. ├ .InstrNo Device Identification 3.2.2.102. ├ .Value Input of device identification 8 ASCII characters ditto 794 Basic Titrino...
  • Page 105 3.2 Remote control commands &Diagnose Object Description Input range Reference & Root ├ Diagnose Diagnose ├ .Report Output of adjustment parameters 3.2.2.103. 794 Basic Titrino...

  • Page 106: Description Of The Remote Control Commands

    In place of "RSX", a result name may be entered (.TextRS). This name is out- putted in the report full, short, scalc full and scalc srt. It is used for the result and the corresponding mean value. 794 Basic Titrino...
  • Page 107 Calculation constants specific to a method. Stored in the method memory of the Titrino. Operands specific to the sample (3.2.2.60 and 3.2.2.61) and val- ues of common variables (3.2.2.58) on the other hand are not stored with the methods. 3.2.2.12. Mode.Parameter.TitrPara.MptDensity 0...4...9 Mode.Parameter.TitrPara.MinIncr 0...10.0...999.9 794 Basic Titrino...
  • Page 108 Parameters for DET, MET, SET: Pause time in s. Is waited off after the dis- pensing of the start volume. 3.2.2.17. Mode.Parameter.TitrPara.MeasInput 1, 2, diff. Mode.Parameter.TitrPara.Ipol -127...1...+127 Mode.Parameter.TitrPara.Upol -1270...400...+1270 Mode.Parameter.TitrPara.PolElectrTest ON, OFF Parameters for DET, MET, SET: 794 Basic Titrino...
  • Page 109 OFF means that the criterion is not monitored. 3.2.2.22. Mode.Parameter.StopCond.FillRate 0.01...150, max. Parameters for DET, MET, SET: Filling rate in the titration in mL/min. Max. means maximum possible filling rate with the Exchange Unit in current use. 3.2.2.23. Mode.Parameter.Statistics.Status ON, OFF Mode.Parameter.Statistics.MeanN 2...20 794 Basic Titrino...
  • Page 110 Windows are opened until the lower limit is set to OFF. For every expected EP, an individual window must be set, see page 34. .FixEP.1.Val: Fix-EP's in pH, mV (for U, Ipol) resp. µA (for Upol). Fix EP's are evaluated until the setting OFF is found. 794 Basic Titrino...
  • Page 111 .Drift: Stop drift in ul/min. Applies when "drift" has been selected. .Time: Switch-off delay time in s. Applies when "time" has been selected. "inf" means infinite. .StopT: Stop time in s. Applies when "time" has been selected and the value of .Time is set to "inf.". 794 Basic Titrino...
  • Page 112 The temperature is used for the temperature correction in pH measurements. 3.2.2.35. Mode.Parameter.Calibration.MeasInput 1, 2, diff. Parameters for CAL: Selection of the measuring input. "diff." means differen- tial amplifier, see page 155. 794 Basic Titrino...
  • Page 113 Parameters for TIP: Selection of an element for step X (X = 1...30). For the parameters of the elements see 3.2.2.43. 3.2.2.43. Mode.Parameter.Sequence.X.Method Method name Mode.Parameter.Sequence.X.Pause 0...999 999, INF Mode.Parameter.Sequence.X.L4Output active, inactive, pulse, OFF Mode.Parameter.Sequence.X.L6Output as for L4 Mode.Parameter.Sequence.X.Info up to 16 ASCII characters 794 Basic Titrino...
  • Page 114 An action is performed if "$G" is sent to the corresponding node just after en- tering the name. Do not use blank characters before and after method name! .DelAll: Deletes all methods in the user memory. 3.2.2.47. UserMeth.List.1.Name read only UserMeth.List.1.Mode read only UserMeth.List.1.Quantity read only 794 Basic Titrino...
  • Page 115 Set to 0 on power on and initialization. After 9999, counting starts again at 0. 3.2.2.53. Config.Aux.AutoStart 1...9999, OFF Number of automatic, internal starts. 3.2.2.54. Config.Aux.StartDelay 0...999 999 Start delay time in s. During this time, the data of the preceding determination are retained. 794 Basic Titrino...
  • Page 116 5 ASCII characters Current sample data. The identifications Id1...Id3 can be used in formulas as sample-specific calcu- lation constants C21...C23. If "no unit" is desired for the unit of the sample size, the blank string must be entered. 794 Basic Titrino...
  • Page 117 3.2.2.65. SmplData.ONSilo.CycleLines ON, OFF Silo data cycling. With "ON", executed lines are copied to the next free silo lines, see page 71. Exercise caution if you edit the silo memory during the determinations! 3.2.2.66. SmplData.ONSilo.SaveLines ON, OFF 794 Basic Titrino...
  • Page 118 Info.CalibrationData.Inp1.ElectrodeId read only identical for .Inp2 and .Diff pH calibration data for measuring input 1. After the calibration, the data are entered automatically together with the date of the calibration and the elec- trode identification, see 3.2.2.39. 794 Basic Titrino...
  • Page 119 .EP: Endpoints with DET, MET, SET: Volume coordinate in mL, e.g. "1.2340" Measured value coordinate in pH "5.12", mV (with U and Ipol) "- 241" or µA (with Upol) "43.7". .Var: Various variables. You may overwrite the variables C40...C45, see 3.2.2.95. 794 Basic Titrino...
  • Page 120 .C27 as for .C26 The current values from the silo calculations. C26 is the mean value out of the C24 variables; C27 comes from C25. $Q sends: C24.Name: Name of the assigned value "RS1" 794 Basic Titrino...
  • Page 121 QuickMeas. It is incremented as long as the instrument remains switched on. 3.2.2.77. Info.ActualInfo.Assembly.Counter.V read only Info.ActualInfo.Assembly.Counter.Clear $Q sends the volume. With the function &Info.Assembly.Counter.Clear $G, the volume counter is set to zero. 3.2.2.78. Info.ActualInfo.Assembly.Meas read only $Q sends the current measured value from the assembly. 794 Basic Titrino...
  • Page 122 Info.ActualInfo.Display.L2 up to 24 ASCII characters Lines of the display. The display can be written to from the computer. Pro- ceed as follows: Lock the display, see 3.2.2.91. $Q sends the contents of the corresponding display line. 794 Basic Titrino...
  • Page 123 Titrino. .Input: Selection of the potentiometric measuring input 1, 2, diff., polar- ized electrodes or temperature. .Ipol: Polarization current in µA. .Upol: Polarization potential in mV, entry in steps of 10 mV. 3.2.2.87. Assembly.Outputs.AutoEOD ON, OFF 794 Basic Titrino...
  • Page 124 The Titrino automatically reports when a value has been confirmed with <en- ter> at the Titrino. Message, e.g.: &SmplData.OFFSilo.Id1"Trace" The beginning of the message is marked by a space (ASCII 32). 3.2.2.91. Setup.Lock.Keyboard ON, OFF Setup.Lock.Config ON, OFF Setup.Lock.Parameter ON, OFF Setup.Lock.SmplData ON, OFF 794 Basic Titrino...
  • Page 125 ON, OFF Selection of the values from Assembly for the output in the set time interval (see 3.2.2.93): .CyclNo: Cycle number of the potential measurement. Together with the cycle time (3.2.2.82), a time frame can be set up. 794 Basic Titrino...
  • Page 126 ON, OFF Setup.AutoInfo.T.M ON, OFF Setup.AutoInfo.T.EP ON, OFF Setup.AutoInfo.T.RC ON, OFF Setup.AutoInfo.I ON, OFF Setup.AutoInfo.O ON, OFF ON means that the Titrino reports automatically the moment the correspond- ing change occurs. .Status: Global switch for all set AutoInfo. 794 Basic Titrino...
  • Page 127 With auto, the smallest measured value is taken and the next smaller tick defines the beginning of the scale; the next greater tick to the greatest measured value is the end of the scale. 794 Basic Titrino...
  • Page 128 Initializes instrument, see page 147. All parameters are set to their default value and error messages are cleared. The user and silo memories will be de- leted. The user memory contains the default user methods from Metrohm. 3.2.2.102. Setup.InstrNo Setup.InstrNo.Value serial number, 8 ASCII characters Instrument identification for report output.

  • Page 129: Properties Of The Rs 232 Interface

    Parity Bit 1 or 2 Stop Bit Only a shielded data cable (for example, METROHM D.104.0201) may be used to couple the Titrino with foreign devices. The cable shield must be properly grounded on both instruments (pay attention to current loops; always ground in a star-head formation).
  • Page 130 Titrino sends XOFF. After this, it can receive maximum 6 extra characters and store them. The string sent previously is now processed by the Titrino. Afterwards, the Ti- trino sends XON and is again ready to receive. 794 Basic Titrino...
  • Page 131 XOFF is received the Titrino completes sending the line already started. If data output is disabled for more than 3 s by XOFF, E43 appears in the display. Hardware-Handshake, HWs Titrino as Receiver : Titrino external device Time 794 Basic Titrino...
  • Page 132 All handshake inputs are checked at the Titrino, handshake outputs are set. Titrino as Receiver : Titrino external device Time Titrino as Sender: Titrino external device Time The data flow can be interrupted by deactivating the CTS line. 794 Basic Titrino...

  • Page 133: Pin Assignment

    (<-3 V): OFF state voltage positive (>+3 V): ON state In the transitional range from +3 V to -3 V the signal state is undefined. Driver 14C88 according to EIA RS 232C specification Receiver 14C89 " " 794 Basic Titrino...
  • Page 134 Contact arrangement at plug (female) for RS 232C socket (male) View of soldered side of plug Ordering numbers: K.210.9004 and K.210.0001 No liability whatsoever will be accepted for damage or injury caused by im- proper interconnection of instruments. 794 Basic Titrino...

  • Page 135: What Can You Do If The Data Transfer Does Not Work

    Is your cable correctly wired? (The DTR of the printer has to be connected to the CTS of the Titrino.) Set "HWs" for the handshake of the Titrino. Configure the printer such that its DTR is set (possibly with DIP switches). 794 Basic Titrino...

  • Page 137: Error Messages, Troubleshooting

    In SET, no EP has been set. no EP set Exit: <STOP> and set EP. In TIP a manual measurement (<MEAS/HOLD>) has been no meas.quantity performed without defining a measuring quantity. Exit: <MEAS/HOLD> and define measured quantity. 794 Basic Titrino...
  • Page 138 EP" was reached. A DET or MET titration was stopped as the stop measuring stop meas.val.reached value pH, U or I was reached. SET has been stopped as the stop time has been reached. stop time reached 794 Basic Titrino...
  • Page 139 3 Exit: <CLEAR>. Default adjustment data are set. The error message appears each time the instrument is switched on until it has been readjusted (Metrohm service). TIP has been terminated. TIP terminated With SET, with preset titration direction the first measured wrong sample value is outside the end point.
  • Page 140 The RS interface parameters are no longer the same for both instruments. The receive buffer of the Titrino contains an incomplete string (missing L ). Transmission of the Titrino is thus blocked. Exit: Send L or <QUIT>. 794 Basic Titrino...

  • Page 141: Diagnosis

    4.2. Diagnosis 4.2 Diagnosis 4.2.1 General The 794 Basic Titrino is a very precise and reliable instrument. Thanks to its rugged con- struction it is virtually impossible for external mechanical or electrical influences to have an adverse effect on its functions.

  • Page 142: Equipment Required

    4.2. Diagnosis 4.2.3 Equipment required: voltage calibrator, e.g. 1.773.0010 Metrohm pH Simulator − or 1.767.0010 Calibrated Reference for mV, pH, Ω µS, °C highly insulated interconnection cable 6.2108.060 − cable 3.496.5070 − exchange units, if possible with different cylinder volumes (or 3.496.0070 dummy exchange unit) −...
  • Page 143 • Block 1 is quit by pressing the <Clear> key twice. diagnose press key 0...9 Cylinder code, date, time • Put exchange unit or dummy on the Titrino and put the burette tip into a collecting receptacle. • Press <0>. 794 Basic Titrino...
  • Page 144 Read off value an the connected voltmeter and compare with the mV value on the display. (Tolerance 2 mV) ± • Press <Quit>. • Disconnect voltmeter. Motor timer test • Press <6>. m o t o r - t i m e r t e s t • Press <Enter>. 794 Basic Titrino...
  • Page 145 1 . . . 5 Examination of highly insulated measuring inputs • Connect ‘Ind I’ measuring input to a voltage calibrator (e.g. Metrohm 773 pH simu- lator) by means of a highly insulated cable (e.g. 6.2108.060). Set calibrator to 0 V.
  • Page 146 1 . . . 5 Remove cables and resistor switch-box. • Polarizer test • Press <5>. p o l a r i z e r t e s t • Press <Enter>. 794 Basic Titrino...
  • Page 147 External inputs and outputs This test is meaningful only if the 794 Basic Titrino is used interconnected with other instruments via the 'Remote' con- nection. In addition, a 3.496.8510 test plug normally used in the repair service is required for this test. However, this plug can also be purchased by customers under the above number.
  • Page 148 For the sake of completeness, the procedure is described here. If a diagnostic test of the RS 232 interface is not re- quired, continue with point 10. Fig. 4 Connections in the 3.496.8480 plug • Press <5>. R S 2 3 2 t e s t • Press <ENTER>. 794 Basic Titrino...
  • Page 149 • Press the <DOS> key (on instrument) until the piston rod reaches the top and at the same time measure the time from start to end. X X X X * * * * * * * * cylinder empty ! mind selected language! 794 Basic Titrino...
  • Page 150 1/10 of the cylinder volume to be expelled. The time should be ca. 90 ... 110 • Set potentiometer 'dV/dt' to right stop. • Press <FILL>. Setting up original arrangement Reconnect all peripherals disconnected at the start of the diagnostic routine and perform a short function test with these. 794 Basic Titrino...

  • Page 151: Initialise And Test Ram

    However, possibly a small loss in accuracy must be antici- pated. A new optimum adjustment can be performed by Metrohm service. The error mes- sage 'system error 3' always appears after the instrument is switched on until this adjust- ment has been performed.

  • Page 152: Releasing A Locked Spindle

    The electronic circuits are now accessible! On no account touch these! • Remove spindle from mechanical stop by turning the large gear wheel. (In case that the motor is inoperative, position spindle by hand to zero position.) 794 Basic Titrino...

  • Page 153: Preparations

    5.1.1 Titrino with Stirrer or Titration Stand Stirrer cable Stirrer or Ti Stand 6.2132.080 Keypad The 802 Rod Stirrer, the 727, or the 703 Ti Stand with 6.2108.100 ca- ble can also be connected instead of the 728 Magnetic Stirrer. 794 Basic Titrino...

  • Page 154: Connection Of A Printer

    DPU-414 data bit: stop bit: none parity: none handshake: send to: Seiko Custom 6.2125.130 baud rate: 9600 none, pre-set on Metrohm version DP40-S4N data bit: IDP-560 EMULATION FONT MAP =GERMANY stop bit: PRINT=REVERSE parity: none LITTLE CR CODE=VOID handshake: CR AFTER B :FULL=VOID...

  • Page 155: Connection Of A Balance

    The balance type must be preselected at the Titrino with the <CONFIG> key. Balance and printer can be connected at the same time with the aid of the 6.2125.030 adapter. The balance must then be plugged into the "data in" receptable of the adapter. 794 Basic Titrino...

  • Page 156: Connection Of A Sample Changer

    • If a calibration has to be performed with the sample changer, the calibration parameter "sample changer:" must be set to "ON". • In connections with the sample changer, "auto start" should be set to "OFF" in the <CONFIG> key. The start command is given by the Sample Changer. 794 Basic Titrino...

  • Page 157: Connection Of A Recorder

    Volume drift 100 µL/min: 1000 mV U(rel) Control deviation 100 mV ∆pH = 1: 1 mV ∆U = 1 mV: 10 mV = 1 µA: ∆I Temperature 10 mV = ±1 °C: ∆T = 0 °C: 0 mV 794 Basic Titrino...

  • Page 158: Connection Of A Computer

    Cable 6.2125.060 (+6.2125.010) Preselections on the Titrino: RS232 settings: ......... depend on the control program of the computer Send to:..........................IBM Vesuv 3.0, PC program for data acquisition and method backup for up to 64 devices ..................6.6008.200 794 Basic Titrino...

  • Page 159: Connection Of Electrodes, Preparing Titration Vessel

    Recommended electrodes: Meas.input Manual determinations Sample Changers Ind I 6.0133.100 pH Glass electrode 6.0130.100 pH Glass electrode Ind II 6.0729.100 double-shielded 6.0729.110 double-shielded Ag/AgCl reference electrode Ag/AgCl reference electrode 6.0301.100 auxiliary electrode 6.0302.110 auxiliary electrode 794 Basic Titrino...
  • Page 160 • If the potential jump after the first dispensing step is too large, a small start volume may help. • As an "auxiliary electrode", the 6.1808.030 burette tip with earthing may be used in some cases. Use burette tips without anti- diffusion valve! 794 Basic Titrino...
  • Page 161 • placing the buret tip according to the drawing below for maximum distance between the adding of the titrant and the electrode. Stirrer Electrode Buret Pay attention on the direction of rotation of the stirrer! 794 Basic Titrino...

  • Page 162: Appendix

    Volume of buret cylinder 1, (2), 5, 10, 20 or 50 mL Resolution 10 000 steps per buret cylinder Titrating burets 1 internal buret Auxiliary burets 2 additional burets: 776 or 765 Dosimat Materials Housing Polybutyleneterephthalate (PBTP) Keypad cover Polycarbonate (PC) 794 Basic Titrino...
  • Page 163 Height of characters 5 mm LED back-lit Internal memory Method memory for up to 100 methods. Data bank with 17 Metrohm methods. Silo memory for sample data and results RS232 interface for printer, balance or computer connection: completely controllable from external control unit Remote input/output lines for Sample Changer, robot connection, etc.
  • Page 164 100, 117, 220/230, 240 V (switchable) Frequency 50 ... 60 Hz Power consumption 15 W Fuse Thermal fuse Dimensions with Exchange Unit Width 150 mm Height 450 mm Depth 275 mm Weight, incl. keypad app. 3.6 kg 794 Basic Titrino...

  • Page 165: Pin Assignment Of The "Remote" Socket

    +5 V not used pin 24 (Input 6) +5 V pin 12 (Input 7) Outputs pin 5 (Output 0) Ready inactive pin 18 (Output 1) Conditioning ok, active if Cond.ok pin 4 (Output 2) Titration, active during titration 794 Basic Titrino...
  • Page 166 I ≤ 75 mA +5 V pin 14 0 V: active 5 V: inactive pin 25 Ordering numbers for plug: K.210.9004 (shell) and K.210.002 No liability whatsoever will be accepted for damage caused by im- proper interconnection of instruments. 794 Basic Titrino...

  • Page 167: Lines Of The "Remote" Socket During The Titration

    6.2 Pin assignment of the "Remote" socket 6.2.1 Lines of the "Remote" socket during the titration 794 Basic Titrino...

  • Page 168: Possible Configurations Of The Activate Pulse In Set And Cal

    6.2. Pin assignment of the "Remote" socket 6.2.2 Possible configurations of the activate pulse in SET and 794 Basic Titrino...

  • Page 169: User Methods

    The following methods are available: 794 Titrino 01102 794.0010 Datum 2002-01-03 Zeit 15:16 user method bytes Titer_pH Blank Chloride TAN-TBN Diazo Ipol Br-Index Sapon.No Ca-Mg EDTA-NTA Metals Perox.No Form.Pre Form.Det FormolNo P2O5-1 P2O5-2 P2O5Fert Freie Bytes 6856 ------------ 794 Basic Titrino...

  • Page 170: Titer_Ph

    V: abs. 40 mL dist. Water (free of carbonate). stop V 20 ml stop pH stop EP Reference: filling rate max. ml/min METROHM Application Bulletin Nr. 206: >statistics status: mean res.tab: original >evaluation EP recognition: fix EP1 at pH pK/HNP: >preselections...

  • Page 171: Blank

    C30 and can therefore be used directly by min.incr. 10.0 µl subsequent methods. titr.rate max. ml/min signal drift 50 mV/min Reference: equilibr.time 26 s METROHM Application Bulletin Nr. 210: start V: pause meas.input: temperature 25.0 °C >stop conditions stop V: abs. stop V 30 ml...

  • Page 172: Chloride

    25.0 °C be deleted. >stop conditions stop V: abs. stop V 99.99 ml Reference: stop U OFF mV METROHM Application Bulletin Nr. 130 stop EP filling rate max. ml/min >statistics status: >evaluation EP recognition: fix EP1 at U OFF mV pK/HNP: >preselections...

  • Page 173: Tan-Tbn

    100 s buffers. meas.input: diff. temperature 25.0 °C Reference: >stop conditions METROHM Application Bulletin Nr. 80: stop V: abs. stop V 10 ml Differential potentiometry, see page 155. stop U OFF mV stop EP filling rate max.

  • Page 174: Diazo

    794.0010 date 2002-01-03 time 09:43 Diazo >calculations Content=EP1*C01*C02*C03/C00;2;% – Sample size in g C00= – Molar mass of the substance to be determined C01= – Normality of the titrant (0.1*titer) C02= – Factor for % C03= ------------ 794 Basic Titrino...

  • Page 175: Br-Index

    OFF mV >preselections Remarks: req.ident: req.smpl size: value The bromine index can be determined easily activate pulse: by endpoint titration (SET). ------------ Reference: Metrohm Application Bulletin Nr. 177 794 Titrino 01102 794.0010 date 2002-01-03 time 09:44 Ipol Br-Index >calculations – Result in mg bromine/100 g sample Br-Index=(EP1-C01)*C02*C03/C00;1;mg...

  • Page 176: Sapon.no

    EP Remarks: filling rate max. ml/min Change the result unit e.g. to mg KOH. >statistics status: Reference: >evaluation Metrohm Application Bulletin Nr. 141 EP recognition: fix EP1 at U OFF mV pK/HNP: >preselections req.ident: req.smpl size: value activate pulse:...

  • Page 177: Ca-Mg

    As a rule of thumb, the ratio EP recognition: Mg/acetyl acetone should be app. 0.05. fix EP1 at U OFF mV pK/HNP: Reference: >preselections Metrohm Application Bulletin Nr. 125 req.ident: req.smpl size: activate pulse: ------------ 794 Titrino 01102 794.0010...

  • Page 178: Edta-Nta

    Remarks: >statistics Select the appropriate formula. The other may status: be deleted. >evaluation EP recognition: Reference: fix EP1 at U OFF mV Metrohm Application Bulletin Nr. 143 pK/HNP: >preselections req.ident: req.smpl size: activate pulse: ------------ 794 Titrino 01102 794.0010 date...

  • Page 179: Metals

    Refer to the table above for the molar mass of a metal and the appropriate buffer. EP recognition: fix EP1 at U OFF mV pK/HNP: Reference: >preselections Metrohm Application Bulletin Nr. 101 req.ident: req.smpl size: activate pulse: ------------ 794 Titrino 01102 794.0010...

  • Page 180: Perox.no

    The sample must be stirred very well during >statistics the titration, in order to obtain a good emul- status: >evaluation sion. EP recognition: Reference: fix EP1 at U OFF mV Metrohm Application Bulletin Nr. 141 pK/HNP: >preselections req.ident: req.smpl size: value activate pulse: ------------ 794 Titrino 01102 794.0010...

  • Page 181: Formolno

    Determination of the formaldehyde number in fruit juices. TIP method with the submethods "Form.Pre" and "Form.Det" Electrode: 6.0232.100 combined pH glass electrode, at measuring input 1. Additonal instrument: 765 Dosimat, connect to 794 Basic Titrino via Remote line. Titrant: c(NaOH) = 0.1 mol/L. Aux. reagent: w(formaldehyde) = 0.35 adjusted to pH 8.5 with NaOH.
  • Page 182 ------------ 794 Titrino 01102 794.0010 date 2002-01-03 time 09:59 Form.Det >formula >silo calculations match id: >common variables >report >mean MN1=RS1 Transfer of the end point as temporary variable >temporary variables to FormolNo. C70=EP1 ------------ 794 Basic Titrino...
  • Page 183 ------------ 794 Titrino 01102 794.0010 date 2002-01-03 time 10:00 FormolNo Formaldehyde number in mL c(NaOH) = 0.1 >calculations mol/L per 100 mL sample FormolNo=C70*C01;1; Calculation factor for 100 mL sample C01= EP1 from Form.Det C70= 5.522 ------------ 794 Basic Titrino...

  • Page 184: P2O5Fert

    TIP method with submethods "P2O5-1" and "P2O5-2" Electrode: 6.0232.100 combined pH glass electrode, at measuring input 1. additional instrument: 765 Dosimat, connect to 794 Basic Titrino via Remote line. Titrant: c(NaOH) = 1.0 mol/L. Reagents: c(HCl) = 1.0 mol/L Sodium oxalate sat.
  • Page 185 ------------ 794 Titrino 01102 794.0010 date 2002-01-03 time 10:04 P2O5-2 >formula >silo calculations match id: >common variables >report >mean MN1=RS1 Transfer of the determined end point as tem- >temporary variables porary variable to P2O5Fert. C71=EP1 ------------ 794 Basic Titrino...
  • Page 186 % P2O5=(C70+C71)*C01*C02/C00;2;% Sample size C00= Concentration of titrant C01= Equivalence weight of P in g/mol C02= Excess of titrant in 1 titration in mL C70= 1.031 Volume of titrant in 2 titration in mL C71= 10.614 ------------ 794 Basic Titrino...

  • Page 187: Validation / Glp

    Metrohm Application Bulletin: No. 252: Validation of Metrohm Titrators (potentiometric) according to GLP/ISO 9001. Contact your Metrohm agency for support with the validation of your Titrino. There you get a validation documentation, which helps you to perform the installation qualification (IQ) and the operational qualification (OQ).

  • Page 188: Warranty And Conformity

    Lack of an official damage report releases METROHM from any liability to pay compensation. If any instruments and parts have to be returned, the original pack- aging should be used if at all possible.

  • Page 189: Eu Declaration Of Conformity

    6.5 Warranty and conformity 6.5.2 EU Declaration of conformity EU Declaration of Conformity The METROHM AG company, Herisau, Switzerland hereby certifies, that the instrument: 794 Basic Titrino meets the requirements of EC Directives 89/336/EEC and 73/23/EEC. Source of the specifications: EN 50081 Electromagnetic compatibility, basic specification;...

  • Page 190: Certificate Of Conformity And System Validation

    The features of the system software are docu- mented in the instruction manual. Metrohm Ltd. is holder of the SQS-certificate of the quality system ISO 9001 for quality assurance in design/development, production, installation and servic- ing.

  • Page 191: Scope Of Delivery And Ordering Designations

    NEMA/ASA (USA...) ................. 6.2122.070 1 Vesuv 3.0 light, PC program for data acquisition and method backup for 2 devices ....................6.6008.500 1 Instructions for Use for 794 Basic Titrino............8.794.1003 1 Quick Reference for 794 Basic Titrino ............... 8.794.1013 Options...
  • Page 192 Cable Titrino – EPSON LX300+ (25/25 pins)............6.2125.050 Cable Titrino – HP Desk Jet (serial interface) (25/25 pins) ........6.2125.050 Cable Titrino – HP Desk/Laser Jet (parallel IF) ............ 2.145.0330 Adapter for connection of printer/balance at the same COM......6.2125.030 794 Basic Titrino...
  • Page 193 Cable Titrino — 730, 760 Sample Changer+665, 725, 765, 776 Dosimat ..6.2141.040 Cable Titrino — 730, 760 Sample Changer+ 2x 665, 725, 765, 776 Dosimat ..6.2141.050 Cable Titrino — Control Unit 664 for Sample Changer 673/674 ......3.980.3560 794 Basic Titrino...

  • Page 194: Index

    ............. 121 Configuration..........22 ......... 40 display drift: Conformity..........184 ........133 Connection division by zero ..........26, 37 balance ..........151 dos.rate Dosing............3 cable..........188ff Drift............31, 45 computer..........154 ............ 36 electrodes ........... 155 dynamics 794 Basic Titrino...
  • Page 195 ......29, 39, 46, 48, 50, 55 mean ........26, 37, 45, 50 Mean I(pol) I/O-lines ..........161f calculation..........55 .........69, 71 delete result........... 55 id#1 or C21 Identification silo ............74 inquiry ............30 MEAS............45 request ..........40 ....... 26, 37, 45, 47, 50 meas.input: 794 Basic Titrino...
  • Page 196 23 SET............36 pin assignment ........129 TIP ............62 properties...........125ff ............23 parity: Rules for operation via RS232 ....77ff ..........26, 37, 63 pause ..........23 ........22 run number peripheral units Perox.No..........176 Perturbation........... 133ff 794 Basic Titrino...
  • Page 197 Tutorial............9ff Statistics calculations ...........55 ........26, 37, 45, 50 report .............60 U(pol) Unit values result............52 delete results........55 sample size ........... 69 silo .............74 ..........29 ......29, 39, 46, 48, 50, 55 up lim.1 pH status: 794 Basic Titrino...
  • Page 198 Index User methods........66, 165ff Warranty..........184 .......... 135 wrong sample ..........26, 33 V step Validation..........183 Values entry..........7 ......... 133 XXX bytes missing 794 Basic Titrino...

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