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Technical Communication Metrohm AG CH-9100 Herisau techcom@metrohm.com This documentation is protected by copyright. All rights reserved. This documentation has been prepared with great care. However, errors can never be entirely ruled out. Please send comments regarding possible errors to the address above.
3.11 Remote connections ............22 3.11.1 Remote cable ................ 22 3.11.2 Example systems ..............22 3.12 Connecting a keyboard, printer and other USB devi- ces ..................23 3.13 Connecting the instrument to the power grid ....25 ■■■■■■■■ 885 Compact Oven SC...
1 Introduction Instrument description The 885 Compact Oven SC is used wherever the heating of a sample and/or the thermal expulsion of moisture in solids or liquids is required. In combination with a coulometric or volumetric KF titrator, the 885 Com-...
Monochrome LCD display and keyboard. 1.1.2 Intended use The 885 Compact Oven SC is designed for usage as an auxiliary device for automated sample preparation in analytical laboratories. Its main area of application is water content determination using Karl Fischer titration (coulometric or volumetric).
To maintain this state and ensure non-hazardous operation of the instrument, the following instructions must be observed carefully. 1.3.2 Electrical safety The electrical safety when working with the instrument is ensured as part of the international standard IEC 61010. ■■■■■■■■ 885 Compact Oven SC...
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■■■■■■■■■■■■■■■■■■■■■■ 1.3 Safety instructions WARNING Only personnel qualified by Metrohm are authorized to carry out service work on electronic components. WARNING Never open the housing of the instrument. The instrument could be damaged by this. There is also a risk of serious injury if live components are touched.
Personnel safety WARNING Wear protective glasses and working clothes suitable for laboratory work while operating the 885 Compact Oven SC. It is also advisable to wear gloves when caustic liquids are used or in situations where glass vessels could break.
WARNING The 885 Compact Oven SC is not suitable for usage in biochemical, biological or medical environments in its basic equipment version. Appropriate protective measures must be implemented in the event that potentially infectious samples or reagents are being processed.
The correct disposal of your old instrument will help to prevent negative effects on the environment and public health. More details about the disposal of your old instrument can be obtained from your local authorities, from waste disposal companies or from your local dealer. ■■■■■■■■ 885 Compact Oven SC...
11 Gas outlet 12 Gas connections For the tubing for testing. With M6 thread. For the drying flasks. With M6 thread. 13 Recesses in the housing 14 Warning symbol For the drying flasks. Warns against hot surfaces. ■■■■■■■■ 885 Compact Oven SC...
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With M6 inner thread. Inlet for external gas- sing. Remote connector USB (OTG) connector For connecting instruments with a remote For connecting printers, USB flash drives, interface. D-sub, 9-pin. USB hubs, etc. Type plate Contains specifications concerning supply voltage and serial number ■■■■■■■■ 885 Compact Oven SC...
The titration cell must be fitted as close to the device as possible. Two stand plates (6.2001.050 and 6.2001.060) with support rods are available for this purpose, each of which is supplied with a KF titrator. ■■■■■■■■ 885 Compact Oven SC...
Mounting the stand plate Proceed as follows: 1 Screw the stand plate to the base of the 885 Compact Oven SC with the screws provided, see figure. 2 Guide the large cylinder screw into the opening of the stand plate from the bottom.
The 6.2049.040 needle holder, which is 58 mm in length, ensures that the needle penetrates the liquid or powdery sample. The carrier gas can flow through the sample and effect an efficient expulsion of the moisture it contains. The 6.2049.040 needle holder can be ordered from Metrohm if required. ■■■■■■■■...
4 Screw the 6.1805.060 FEP tubing by hand onto the opening of the distributor. 5 Tightly screw the other end of the tubing to the gas outlet opening (labeled with to sample) next to the tower, see figure. ■■■■■■■■ 885 Compact Oven SC...
2 Screw one 6.1821.040 filter tube into each of the 6.1602.145 drying flask covers from below. Tighten the filter tubes well by hand. 3 Screw the two drying flask covers with the filter tubes onto the dry- ing flasks. Tighten the covers well by hand. ■■■■■■■■ 885 Compact Oven SC...
3 Screw the second 6.1805.080 FEP tubing (25 cm in length) to the gas inlet (at the rear on the right, labeled 2). Screw the other tubing end on the rear drying flask to the M6 connector with point marking (see right-hand arrow). ■■■■■■■■ 885 Compact Oven SC...
Mounting the heating tubing 6.1830.030 Figure 7 Mounting the heating tubing Proceed as follows: 1 Screw the M6 connector of the 6.1830.030 heating tubing into the side opening of the distributor on the guide head. ■■■■■■■■ 885 Compact Oven SC...
The connection cable of the heating tubing must be guided through the lateral recess of the cover, see figure. WARNING The 885 Compact Oven SC may not be operated without a safety shield! Mounting the dust filter The built-in air pump must be protected against dust. A 6.2724.010 dust filter must be placed on the air inlet (Inlet filter) on the right-hand side of the housing for this reason.
If gas is supplied from a pressure line or a pressure vessel, then it is imperative that a pressure reduction valve be placed upstream. The gas pressure may not exceed a maximum overpressure level of 0.3 bar. ■■■■■■■■ 885 Compact Oven SC...
3.10 Inserting the heating tube into the KF titration cell The 885 Compact Oven SC can be used in combination with a KF coulom- eter or a volumetric KF titrator. The mounting of the tip of the heating tube is accomplished in different ways for the respective KF titration cells.
E.3010.032 O-ring. The latter you will still need. A 6.2730.020 septum stopper is enclosed with every KF titrator ■ made by Metrohm. Disassemble this septum stopper into three parts and remove the septum. It will not be required. 6.1830.030 6.2730.020 E.3010.032...
3.11 Remote connections The 885 Compact Oven SC can be used as a control device for a simple automation system with a large variety of different instruments. Even older Metrohm instruments can thus be integrated into an automated analysis system.
3.12 Connecting a keyboard, printer and other USB devi- The 885 Compact Oven SC has a USB (OTG) connector. Use the provided 6.2151.100 adapter USB MINI (OTG) - USB A for connecting USB devices as e.g. printers, keyboards or USB sticks, see the following figure.
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USB hubs are available in specialty stores in a number of differ- ent models. The USB (OTG) connector of the 885 Compact Oven SC has no such hub. The 6.2147.000 numerical USB keypad has a USB hub and two USB connectors.
Unplug the power plug immediately if you suspect that moisture has ■ gotten inside the instrument. Only personnel who have been issued Metrohm qualifications may ■ perform service and repair work on electrical and electronic parts. Connecting the power cord...
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– min. 10 A NOTICE Do not use a not permitted power cord! 1 Plugging in the power cord Plug the power cord into the instrument's power socket. ■ Connect the power cord to the power grid. ■ ■■■■■■■■ 885 Compact Oven SC...
The moisture is titrated in the titration cell. The titrator is connected with the 885 Compact Oven SC using a remote cable. The instrument starts conditioning at the titrator through the remote cable control line.
°C, because the flowing carrier gas cools the sample. The heating is switched on automatically when the instrument is switched on. The oven is heated to the temperature defined in the method cur- rently loaded (see page 52). ■■■■■■■■ 885 Compact Oven SC...
Fundamentals of operation 5.2.1 The keypad Figure 19 Keypad 885 Compact Oven SC BACK Apply the input and exit the dialog. ⇧ ⇩ Move the selection bar either up or down by one line at a time.
Entering text and numbers In the editing dialog for text input or numerical input, select the individual characters with the arrow keys. Use [OK] to apply the character in the input field. The following functions are available: ■■■■■■■■ 885 Compact Oven SC...
The [BACK] key has the same function as Accept. Methods The 885 Compact Oven SC operates with a specified process method. Var- ious settings can be parameterized individually in the process method, depending on application. An optimized method run can be saved as a reusable method.
A maximum of 100 methods can be saved. To save a method, proceed as follows: 1 Opening the method table In the main dialog, select Method and press [OK]. ■ The method table opens: ■■■■■■■■ 885 Compact Oven SC...
To load a method, proceed as follows: 1 Open the method table In the main dialog, select Method and press [OK]. ■ The method table with the stored methods opens: 2 Select a method Select the desired method. ■ ■■■■■■■■ 885 Compact Oven SC...
The method is being exported. The directory structure on the USB flash drive is listed in chapter 6.2, page 45. The method is being exported. The directory structure on the USB flash drive is described in the more detailed manual. ■■■■■■■■ 885 Compact Oven SC...
The position of the first sample is increased with each method run. You can still cancel the start of the sample series at this time with [BACK] or [STOP]. 4 Close the sample series dialog Close the dialog with the [BACK] key. ■■■■■■■■ 885 Compact Oven SC...
5.4.2 Pausing a sample series and continuing Pausing a sample series A method run of the 885 Compact Oven SC can be paused and then con- tinued again. The connected instruments are however not paused. NOTICE Interruption of the method run is not possible during the execution of commands during which the 885 Compact Oven SC waits for a signal from the connected titrator.
1 Opening the main menu In the main dialog, select Menu and press [OK]. ■ 2 Opening the print dialog Select the menu item Print reports and press [OK]. ■ The dialog window with the available reports opens: ■■■■■■■■ 885 Compact Oven SC...
Setting the temperature (Temperature) ■ Switching the gas flow on/off (Gas flow) ■ Setting the flow rate (Flow rate) ■ The available subfunctions are listed for each function in the function bar. 5.6.1 Rotating the sample rack ■■■■■■■■ 885 Compact Oven SC...
Menu ▶ System ▶ Lift . Shift pos. The rotation height. The lift moves all the way to the top. The current lift position is displayed. Each other possible position is provi- ded in the function bar. ■■■■■■■■ 885 Compact Oven SC...
The question of whether the installed pump or the valve for the gas supply connection (Air/N in) is switched on depends on whether, under Param- eters (method-specific), the Gas supply is set to pump or valve. ■■■■■■■■ 885 Compact Oven SC...
If the Gas flow line is selected, a value for the flow rate of the gas can be specified by pressing [OK]. Gas flow Specified value for the gas flow. Input range 10 - 150 mL/min (Increment: 1) Default value 50 mL/min ■■■■■■■■ 885 Compact Oven SC...
Time Current time. Only valid numbers can be entered. Format: hh:mm:ss Date Current date. Only valid numbers can be entered. Format: YYYY:MM:DD Language Setting the dialog language. An additional language can be selected besides English. ■■■■■■■■ 885 Compact Oven SC...
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If the limited dialog for routine operation is activated, then the expert dialog cannot be activated during ongoing operation. To change the dialog type, the 885 Compact Oven SC must be switched off and then back on again. The expert dialog can be forced as soon as the instru- ment is started up again.
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Beep If this parameter is activated, then a short beep will sound in the following cases: When a key is pressed. ■ At the end of the determination. ■ on | off Selection Default value ■■■■■■■■ 885 Compact Oven SC...
Directory structure on the USB flash drive A directory with the instrument number will be created on the USB flash drive. The structure within this directory appears as follows: Figure 20 Directory structure on the USB flash drive ■■■■■■■■ 885 Compact Oven SC...
The determination of the necessary temperature correction can be accom- plished with a special oven insert and should be performed by a service technician. Contact your responsible Metrohm supplier. Serial number Serial number of the oven module. It cannot be modified.
The working height of the lift (on the conditioning position) can be set to the desired value. This is carried out by directly operating the lift. To set this lift height, the sample rack must first be moved to the conditioning position of the rack manually. ■■■■■■■■ 885 Compact Oven SC...
The printers that have the designation ESC-POS are so-called POS printers (point-of-sale printers), i.e. they print on continuous paper. Selection Citizen (ESC-POS) | Custom (ESC-POS) | Epson | Epson (ESC-POS) | HP DeskJet | HP LaserJet | Seiko (ESC-POS) Default value HP DeskJet ■■■■■■■■ 885 Compact Oven SC...
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1 | 2 Default value Parity Type of parity testing. Selection even | none | odd Default value none Handshake Type of the data transfer protocol. hardware | software | none Selection hardware Default value ■■■■■■■■ 885 Compact Oven SC...
Proceed as follows: 1 Connecting the USB flash drive Plug in the USB flash drive with the 6.2151.100 adapter (USB ■ MINI (OTG) - USB A) at the instrument's USB port. Switch on the instrument. ■ ■■■■■■■■ 885 Compact Oven SC...
No user intervention is required. 6.6.2 Diagnosis functions Electronic and mechanical functional groups in Metrohm instruments can and should be checked as part of regular maintenance by specialist per- sonnel from Metrohm. Please ask your local Metrohm representative regarding the precise terms and conditions involved in concluding a corre- sponding maintenance agreement.
Measuring factor Measuring factor for measuring the flow rate of the gas. This setting is only possible if other was selected as the gas. For air and nitrogen, the corresponding measuring factor is inserted automatically. ■■■■■■■■ 885 Compact Oven SC...
The result report includes specifications on the oven temperature and on the flow rate during the determination. Selection on | off Default value Parameters All of the parameters of the current method are printed out in the para- meter report. ■■■■■■■■ 885 Compact Oven SC...
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USB storage medium or sent via an RS-232 interface to a LIMS. The output location is defined in the system settings (see "PC/LIMS report", page 48). The file name of the TXT file is constructed as follows: PC_LIMS_Report- ID1-YYYYMMDD-hhmmss.txt. Selection on | off Default value ■■■■■■■■ 885 Compact Oven SC...
35 mL with a volumetric KF titration cell. The shaft of the heating tubing must, however, not be immersed. 2 Align the tip of the heating tubing against the vessel wall. 3 Switch on the stirrer. Set the stirring rate to high. ■■■■■■■■ 885 Compact Oven SC...
The 885 Compact Oven SC is not equipped with a serial connec- tion (RS232). Therefore, on the coulometer, switch the setting Oven: to no under PARAM ▶ Preselect.
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The sample rack is rotated. The lift moves downwards and the needle pierces the septum of the conditioning vessel. The gas flow is switched on automatically. The titrator is started by the 885 Compact Oven SC with an electrical signal. The conditioning of the titration cell begins. NOTICE The carrier gas should emerge from the tip of the heating tubing into the working medium as tiny bubbles and be spun there forcefully.
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■■■■■■■■■■■■■■■■■■■■■■ 8.1 Conditioning the system waits for a Cond OK signal from the titrator. If this signal remains stable for 60 s, then the sequence is resumed with the actual determination. ■■■■■■■■ 885 Compact Oven SC...
9 Operation and maintenance 9 Operation and maintenance The 885 Compact Oven SC requires appropriate care. Excess contamina- tion of the instrument may result in functional disruptions and a reduction in the service life of the sturdy mechanics and electronics of the instru- ment.
Meas. factor parameter so that the corrected gas flow rate is displayed. At the same time, however, the value otherhas to be selected for the Gas type parameter. ■■■■■■■■ 885 Compact Oven SC...
Pin assignment of the remote interface Figure 21 Pin assignment of remote socket and remote plug The above figure of the pin assignment applies for all Metrohm instru- ments with 9-pin D-Sub remote connector. Table 1 Inputs and outputs of the remote interface Pin No.
2 Switching on the instrument Keep the red [STOP] key pressed down for approx. 10 s. ■ The dialog for confirmation of the initialization is displayed for 8 s. The initialization must be confirmed during this time. ■■■■■■■■ 885 Compact Oven SC...
10.4 Literature ® Manual, Riedel-de Haën E. Scholz, Hydranal ■ P. Bruttel, R. Schlink, Water Determination by Karl Fischer Titration ■ Monograph, Metrohm, 2006, Order no. 8.026.5013 ■■■■■■■■ 885 Compact Oven SC...
■■■■■■■■■■■■■■■■■■■■■■ 11 Troubleshooting 11 Troubleshooting 11.1 885 Compact Oven SC Problem Cause Remedy The drift is very high Molecular sieve of drying Replace the molecular sieve. during conditioning. flasks and/or the titration cell exhausted. The titration cell is leaking. Check seals. If necessary, replace.
For connecting USB devices. Remote connector For connecting instruments with a remote interface. 12.7 Power connection Potential 100 - 120 / 220 - 240 V Frequency 50 / 60 Hz Power consump- 200 W tion 2.0 ATH Fuse ■■■■■■■■ 885 Compact Oven SC...
The PDF file with the accessories data is created. NOTICE Once you have received your new product, we recommend download- ing the accessories list from the Internet, printing it out and keeping it together with the manual for reference purposes. ■■■■■■■■ 885 Compact Oven SC...
Gas flow ......41, 60 Tubings ......15 Safety shield Gas outlet ........8 Mounting Mount ........ 17 Gas supply ........ 52 KF titration cell ....20 Remove ......11 Gas type ........52 Sample rack Rotate ........ 38 ■■■■■■■■ 885 Compact Oven SC...
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Service ........4 Update Stand plate ....... 10 Dialog language ....50 Supply voltage ......4 Program version ....50 Work position ......47 Switch off ......... 29 Working height ......47 Switch on ......... 29 ■■■■■■■■ 885 Compact Oven SC...
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