Metrohm 768 KF Oven Manual
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Metrohm 768 KF Oven Manual

Metrohm 768 KF Oven Manual

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Metrohm AG
CH-9101 Herisau (Switzerland)
KF Oven
768
Series 01...
The following parts around the heating tube of the KF Oven can
become hot:
Heating tube, lateral shielding walls of the heating tube, guard grill
of the heating tube, jacket of the outlet heating.
!
Caution: Never touch these parts and ensure they never come
into contact with solvents!
98.12 Ti
8.768.1003

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  • Page 1 Metrohm AG CH-9101 Herisau (Switzerland) KF Oven Series 01... The following parts around the heating tube of the KF Oven can become hot: Heating tube, lateral shielding walls of the heating tube, guard grill of the heating tube, jacket of the outlet heating.

  • Page 2: Table Of Contents

    Inhalt Inhaltsverzeichnis 1. Introduction ........................1 1.1 Overview........................1 1.2 Operating principle......................4 2. Operating conditions ....................... 5 2.1 Handling the sample boat ..................... 5 2.2 Automatic sequence of a determination ................ 6 2.3 Settings on KF Oven..................... 7 2.3.1 Keypad ........................7 2.3.2 <CONFIG>...
  • Page 3 Inhalt 6. Appendix......................... 53 6.1 Technical specifications ....................53 6.2 "Remote" socket ......................54 6.2.2 Status of the lines during the automatic determination.......... 55 6.3 Checking sample temperature ..................56 6.4 Warranty and certificates .................... 57 6.5 Accessories, scope of delivery..................60 Index ...........................

  • Page 4: Introduction

    1.1 Overview 1. Introduction 1.1 Overview Front Rear 10 12 768 KF Oven...
  • Page 5 Control panel with display, keypad and status lamps. Temperature sensor for measuring the sample temperature. Heating tube with lateral shielding walls and guard grill. Outlet tubing leads into titration vessel. 6.1805.070 Tubing or 6.1830.000 Heatable Outlet Tubing (option). 768 KF Oven...
  • Page 6 Power supply unit with mains switch and mains connection. With power supplies in which powerful HF disturbances are superimposed on the mains voltage, the KF Oven should be operated with an additional mains filter, e.g. METROHM model 615. 768 KF Oven...

  • Page 7: Operating Principle

    The gas exits through the outlet at the end of the insert tube and is led to the titration cell where the moisture of the sample is determined by titration. 768 KF Oven...

  • Page 8: Operating Conditions

    Position so that the holding lug of the guide rod projects over the oven edge and can be easily gripped by the clamp. Grip boat with clamp and take out. Boat and guide rod can also be withdrawn from the oven together. 768 KF Oven...

  • Page 9: Automatic Sequence Of A Determination

    If "valve control" is OFF, the valve remains on VALVE "TRANSFER". TRANSFER When the set temperature has been reached, "READY" READY lights up and the oven is ready for the next determina- tion. 768 KF Oven...

  • Page 10: Settings On Kf Oven

    The boat continues to move until the key is pressed again or the boat reaches the outer stop. <PRINT> Triggers report printout Key sequence: <PRINT><SELECT><ENTER>; press <SELECT> repeat- edly until the desired report appears in the display <PRINT><Key X><ENTER>; Key X = PARAM or CONFIG 768 KF Oven...
  • Page 11 <STOP> Stops the automatic determination. <START> Starts the automatic determination. The start is possible only when the "READY" lamp is continuously lit up, i.e. the cur- rent temperature lies in the range of the starting tempera- ture. 768 KF Oven...

  • Page 12: Config> Key

    "IBM" for all printers with IBM character set table 437, as well as for data transmission to a computer or a data sys- tem. report: Report output at the end of the automatic determination (OFF, ON) Report example: 768 KF Oven 0D1/108 768.0010 run number purge time 10 s cond.time...
  • Page 13 Handshake (HWs, HWf, SWline, SWchar, none) see also page 31 ff. RS control: Control via RS232 interface (OFF, ON) "OFF" means the receipt of commands and data via the RS232 interface is blocked. Data output is possible. 768 KF Oven...

  • Page 14: Param> Key

    Wait time before the sample heating, i.e. before the boat is slid into the oven. The valve is switched to "TRANSFER". The wait time can be aborted with <QUIT>. The conditioning time should be used only when the cold sample evolves moisture with difficulty. 768 KF Oven...

  • Page 15: Special Settings

    100 % After the initial heating, the heating is controlled by meas- urements. Set a greater value if the temperature is not reached dur- ing too long a time. In this case, a higher "init.heat.factor" may also help. 768 KF Oven...

  • Page 16: Practical Tips

    - Hydranal ® Practical Course, Riedel-deHaën, 1987 - G. Wieland, Karl Fischer Titration, GIT Verlag, Darmstadt, 1985 - Following Metrohm Application Bulletins (available free of charge): No. 109 KF water determination with the KF Drying Oven No. 145 Determination of low water contents in plastics No.
  • Page 17 2.4 Practical tips 768 KF Oven...

  • Page 18: Operation Via Rs232 Interface (Green

    C R and L F are used as terminators for the data transfer. The 768 KF Oven sends 2xC R and L F as termination of a data block, to differentiate between a data line which has C R and L F as terminator. The controller terminates its commands with C R and L F .

  • Page 19: Call Up Of Objects

    + 1 preceding points. If a jump is to be made back to the root, a Jump from node 'Language' via root to the preceeding & is entered. node 'Mode': &M 768 KF Oven...

  • Page 20: Triggers

    Detailed Info: Used for inquiry of the detailed status qUit: Used to abort the data flow of the 768 KF Oven, e.g. after $Q The triggers $ G and $S are linked to objects, see overview table, pages 20ff. The other triggers, however, can be used at any time and at all locations on the object tree.

  • Page 21: Status And Error Messages

    Exit: <QUIT> and set parity at both devices the same. Stop Bit Exit: <QUIT> and set stop bit at both devices the same. Overrun error. At least 1 character could not be read. Exit: <QUIT>. The internal receive buffer is full (>82 characters). Exit: <QUIT>. 768 KF Oven...
  • Page 22 The temperature sensor for the oven temperature is not OK. Exit: Rectify fault. E169 The gas flow sensor is not OK (flow >500 mL/min). Exit: Rectify fault. Continuation is possible only when the minimum gas flow is set to 0 mL/min. 768 KF Oven...

  • Page 23: Remote Control Commands

    ³ ³ ³ .StopBit Stop bits 1, 2 3.2.2.16 ³ ³ ³ .Parity Parity even, odd, ³ ³ ³ none 3.2.2.16 ³ ³ ³ .Handsh Handshake HWs, HWf, ³ ³ ³ SWchar, SWline, ³ ³ ³ none 3.2.2.16 768 KF Oven...
  • Page 24 ³ ³ ³ .SetLines Set lines 3.2.2.30 ³ ³ ³ ³ Line 1 active, inactive ³ ³ ³ ³ pulse, OFF 3.2.2.30 ³ ³ ³ ³ All lines as L1 ³ ³ ³ .ResetLines Set all lines inactive 3.2.2.30 768 KF Oven...
  • Page 25 .Select Selection Mode,Config,All ³ ³ ³ Setup,Assembly 3.2.2.40 ³ ³ .RamInit Initialisation 3.2.2.41 ³ ³ .InstrNo Set instrument identification 3.2.2.42 ³ ³ ³ .Value Enter instrument identification 8 ASCII 3.2.2.42 ³ ³ .Save Store in EEPROM 3.2.2.43 768 KF Oven...

  • Page 26: Description Of The Remote Control Commands

    • TempLimit: Starting a determination is possible only if the current temperature is in the range of ±X °C from the sample temperature. • TempCorr: Correction of the sample temperature according to individual sample and Oven requirements. 768 KF Oven...
  • Page 27 Setting of the RS interface parameters: Baud rate, data bits, stop bits, parity and type of handshake, see also page 31. Setting of the values must be initiated immediately following the entry with &Config.RSSet $G, see 3.2.2.15. 768 KF Oven...
  • Page 28 2 Terminate (Pin 22) 2 Stop (Pin 4) 3 Pin 10 3 HeatSmpl (Pin 17) 4 Pin 23 4 Terminate (Pin 3) 5 Pin 11 5 Error (Pin 16) 6 Pin 24 6 Pin 1 7 Cond.ok (Pin 12) 7 Pin 2 768 KF Oven...
  • Page 29 3.2.2.27 Assembly.Valve Assembly.Valve.Pos purge, transfer Set valve. The selected position is set with &Assembly.Valve $G. 3.2.2.28 Assembly.Boat $G, $S Assembly.Boat.Rate 0.1...10 Assembly.Boat.Pos 0...130.0 Assembly.Boat.SetPos.InPos 0...130.0 Assembly.Boat.SetPos.OutPos0...130.0 The movements of the sample boat are initiated with &Assembly.Boat $G. 768 KF Oven...
  • Page 30 Definition of the response to an inquiry with $Q. .Short: With ON all path names are sent, but only with the requisite number of characters. Requisite number of characters means the path is unequivocally characterised (characters printed in boldface in the instructions for use). 768 KF Oven...
  • Page 31 .OvenTemp: Associated oven temperature. .GasFlow: Associated gas flow. Format of the transmitted values (examples): .CyclNo Cycle number .SampleTemp Sample temperature in °C 150.0 .OvenTemp Oven temperature in °C 170.0 .GasFlow Gas flow in mL/min or L/h 100.5 768 KF Oven...
  • Page 32 Mode, Config, All, Setup, Assembly Sets default values for the following areas: Mode: Branch Mode. Config: Branch Config. All: Values of the entire tree. Setup: Branch Setup. Assembly: Branch Assembly. The action is initiated with &Setup.Initialise $G. 768 KF Oven...
  • Page 33 Device identification outputted in the report. The serial number and manufacturing number are entered here in the factory as an unequivocal identification. 3.2.2.43 Setup.Save All entries made via RS232 must be saved with &Setup.Save $G before the instrument is switched off to avoid losses. 768 KF Oven...

  • Page 34: Characteristics Of The Rs232 Interface

    Parit.bit 1 or 2 stop bit(s) For interconnections of the 768 KF Oven with non-Metrohm units, only a shielded data cable (e.g. METROHM D.104.0201) may be used. The cable shielding must be faultlessly earthed at both units (pay attention to current loops; always use star-head earthing). Only connectors with adequate shielding may be used (e.g.
  • Page 35 Oven. Afterwards, the Oven sends XON and is again ready to receive. KF Oven as receiver: KF Oven External device Input KF Oven disabled Data output XOFF Data input 400 us String is processed Time 768 KF Oven...
  • Page 36 3 s by XOFF, E43 appears in the display. 3.3.2.3 Hardware handshake, HWs KF Oven as receiver: KF Oven External device Time KF Oven as sender: KF Oven External device Time The data flow can be interrupted by deactivation of the CTS line. 768 KF Oven...
  • Page 37 All handshake inputs are checked at the Oven, handshake outputs are set. KF Oven as receiver: KF Oven External device Time KF Oven as sender: KF Oven External device Time The data flow can be interrupted by deactivation of the CTS line. 768 KF Oven...

  • Page 38: Pin Assignment

    (remote station is ready to send data). E 20 Data Terminal Ready (DTR) Data Terminal Ready ON condition: Instrument is ready to receive data.. Contact arrangement at the connector (female) View from solder side K.210.9004 (housing) and K.210.0001 768 KF Oven...
  • Page 39 In the transition region from +3 V to -3 V the signal status is undefined. 14C88 Driver, 14C89 Receiver, in compliance with EIA RS232C specifications. No liability whatsoever will be accepted for damage or injury caused by improper interconnection of instruments. 768 KF Oven...

  • Page 40: Troubleshooting, Rectification Of Malfunctions

    4.1 Troubleshooting 4. Troubleshooting, rectification of malfunctions 4.1 Troubleshooting Problem Remedial action • Large scatter in the Do not touch sample boat and guide rod with your titration results. fingers. Use holding clamp or fit cut rubber tubing over your fingers. •...
  • Page 41 • Error message Is the connecting cable to the titrator plugged in "conditioning not ok" properly? although the attached On interconnection with Titrinos, check that the titrator is conditioned. cable ends have not been mixed up! 768 KF Oven...

  • Page 42: Error Messages

    (pin 12 of the "Remote" socket is active) and the determination is automatically continued. If no Metrohm titrator is connected, work should be performed with "start if cond ok: off" (<CONFIG> key, >oven settings).

  • Page 43: Troubles With A Connected Printer

    3 s by XOFF. • Are the data bit and parity settings the same for both The received characters are garbled. devices? • Is the baud rate setting the same for both devices? • Has the correct printer been selected? 768 KF Oven...

  • Page 44: Flow Test

    4.4 Flow test 4.4 Flow test 1. Switch pump ON, key <PUMP>. 2. Turn gas flow control anticlockwise (setting of max. flow). You should have a flow of at least 400 mL/min or 24.0 L/h, resp. 3. Screw off the short tubing at the rear of the Oven (outlet "Air out") and seal the outlet with your finger.

  • Page 45: Initializing The Ram

    Assembly Sets default values in branch "Assembly", see page 21. Sets default values for all device settings. 4. Press key <ENTER>. The initialization will be carried out. Afterwards the display shows: diagnose >RAM Test 5. Leave with <QUIT>. 6. Reenter your configuration data and your parameters. 768 KF Oven...
  • Page 46 4.6 Initializing the RAM 768 KFOven...

  • Page 47: Preparations

    5.1 Setting up the Oven 5. Preparations Ensure that the set operating voltage matches the mains voltage before you switch the ap- paratus on. If this is not the case, the operating voltage must be changed over: 1. Disconnect mains plug. Detach all tubing and cable connections to the oven. Take out drying flasks.

  • Page 48: Setting Up The Oven

    5.1 Setting up the Oven 5.1 Setting up the Oven 6.1808.130 6.1805.180 6.1805.070 6.1805.180 6.1805.080 (6.1808.140) Unpack Oven and remove all protective coverings. 1. Insert 6.2407.020 Insert Tube in the heating chamber of the Oven and fasten it to the Oven with the clamp (red screw).
  • Page 49 5.1 Setting up the Oven 7. Connect right drying flask to the gas connection of the Oven "From drying flask" using 6.1805.080 Tubing. 8. Set 6.2724.010 Dust filter onto the connection "Purge" of the Oven and set 6.1808.130 Adapter onto dust filter. Connect this adapter with the left outlet of the insert tube using 6.1805.180 tubing.

  • Page 50: Connection Of The 756 Kf Coulometer Or Of A Titrino

    5.2 Connection of the 756 KF Coulometer or of a Titrino 5.2 Connection of the 756 KF Coulometer or of a Titrino The Titrino or the 756 Coulometer, resp., is connected to the 768 KF Oven as follows (warning: plug cable ends into proper sockets): Kabel 6.2141.010...

  • Page 51: Installation Of The Coulometric Cell (756 Kf Coulometer)

    5.2 Connection of the 756 KF Coulometer or of a Titrino 5.2.1 Installation of the coulometric cell (756 KF Coulometer) Generator electrode Equip the cell for gas inlet as follows: with drying tube Introduce the tip in the SGJ 14/15 by means of Indicator electrode 6.14446.060 stopper.

  • Page 52: Connection Of The 737 Kf Coulometer

    5.3 Connection of the 737 KF Coulometer 5.3 Connection of the 737 KF Coulometer The 737 KF Coulometer is connected to the 768 KF Oven as follows: 6.2141.000 cable Connection of the 684 KF Coulometer is analogous to that of the 737 KF Coulometer.

  • Page 53: Connection Of The Outlet Heating

    5.4 Connection of the outlet heating 5.4 Connection of the outlet heating If the 6.1830.000 Heatable Outlet Tubing is used, appreciably shorter determination times are achieved. The heatable outlet tubing should be used in all cases where problems arise with con- densation water in the normal outlet tubing.

  • Page 54: Connection Of A Printer

    You may connect the KF Oven together with the Titrator at the same printer using the 2.145.0100 Auto-Switch. Connect the Metrohm instruments with 6.2125.020 cable to the Auto-Switch and use the printer cable as mentioned in the table below from the Auto- Switch to the printer.

  • Page 55: Connection Of A Computer

    The computer can be connected as follows: 6.2125.060 cable Kabel 6.2125.060 For connection to a 9-pin socket of the Pc you need 6.2125.110 cable. Preselection on 768 KF Oven: RS232 settings: depending on control program of computer Send to: 768 KF-Ofen...

  • Page 56: Appendix

    100-120 V; 220-240 V ± 10% (switchable) Nominal voltages Frequency 50...60 Hz Power consumption 250 VA Fusible cutout + 2 × 2A (TH) Fusing Dimensions incl. accessories Width 380 mm Height 250 mm Depth 275 mm Weight incl. accessories ca. 7.8 kg 768 KF Oven...

  • Page 57: Remote" Socket

    Start K.210.9004 (housing) and K.210.0002 Stop Terminate V(CE0) = 40 V Error I(C) = 20 mA not used t(pulse) > 100 ms not used Voltage I <=75 mA + 5 V 0 V: active 5 V: inactive 768 KF Oven...

  • Page 58: Status Of The Lines During The Automatic Determination

    Heat.Smpl Start Stop Terminate Error 1) Sequence a=active Preparation Temp. not ok Ready <START> (purge time) (cond.time) Sample heating Boat out Ready <STOP> 1): The error signal is reset as soon as the fault has been rectified. 768 KF Oven...

  • Page 59: Checking Sample Temperature

    Temperature correction (key <CONFIG>, >oven settings)..- 5 °C In the Oven display you will see the currently measured temperature without correction. The highest and lowest temperatures in the result report as well are the measured temperatures of the Oven without correction. 768 KF Oven...

  • Page 60: Warranty And Certificates

    If damage of the packaging is evident on receipt of a consignment or if the goods show signs of transport damage after unpacking, the carrier must be informed immediately and a written damage report demanded. Lack of an official damage report releases METROHM from any liability to pay compensation.
  • Page 61 The features of the system software are documented 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 servicing. Herisau, April 23, 1998 Dr.
  • Page 62 +41 71 353 85 85 +41 71 353 89 01 EC Declaration of Conformity The METROHM AG company, Herisau, Switzerland hereby certifies, that the instrument: 768 KF Oven meets the requirements of EC Directives 89/336/EWG and 73/23/EWG. Source of the specifications:...

  • Page 63: Accessories, Scope Of Delivery

    Cable 768 KF Oven – Seiko printer DPU-414............6.2125.130 Cable 768 KF Oven – Epson LX-300..............6.2125.050 Cable 768 KF Oven – HP DeskJet, serial interface ..........6.2125.050 Cable 768 KF Oven – HP DeskJet, parallel interface .......6.2125.020+2.145.0300 Serial Auto Switch (Oven and Titrator at the same printer) ........2.145.0100 Cable Metrohm instrument - Serial Auto Switch...........
  • Page 64 Sealing ring for solvent addition................A.254.0104 General Instrument bridge for setting up instruments............6.2041.180 Adapter outer thread M6/Luer.................6.1808.140 Measuring equipment for temperature check ............6.5615.000 Boat of equipment for temperature check...............6.2415.010 Guide rod of equipment for temperature check with T sensor ........6.2416.110 768 KF Oven...

  • Page 65: Index

    - computer ........55 init.heat.factor ........12 - KF Coulometer ......47, 49 Initializing RAM........42 - outlet heating .........50 I/O lines..........54 - printer..........51 - Titrino..........47 <CONFIG> ...........9 Configuration ........9 Contrast of display........3 Connecting cables ......60 Coulometer, connection....47, 49 768 KF Oven...
  • Page 66 >oven settings - pin assignment ......35 Oven temperature, displaying....8 >RS232 settings ........10 ........39 Oven T-sensor run number ........... 10 Overview ..........2 Sample boat <PARAM> ..........11 - handling ........... 5 Parameters.........11 - order number ......... 60 768 KF Oven...
  • Page 67 Temperature check......56 temperature not ok .......39 temp.above 360 °C .........39 Tips ............13 Titration vessel - coulometry .......48, 49 - volumetric vessel......48 Titrino ..........47 Tree..........20ff Tubing ..........60 unit gas flow: ........11 <VALVE>..........7 Valve check ........41 valve control: ........9 Warranty..........57 768 KF Oven...

This manual is also suitable for:

2.768.0010

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