Metrohm 2.1019.00 Series Instruction Manual
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Metrohm 2.1019.00 Series Instruction Manual

Metrohm 2.1019.00 Series Instruction Manual

Omnis coulometer module
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OMNIS Coulometer Module
2.1019.0xx0
Product manual
8.1019.8002EN / 2024-04-30

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  • Page 1 OMNIS Coulometer Module 2.1019.0xx0 Product manual 8.1019.8002EN / 2024-04-30...

  • Page 3: Product Manual

    Metrohm AG Ionenstrasse CH-9100 Herisau Switzerland +41 71 353 85 85 info@metrohm.com www.metrohm.com OMNIS Coulometer Module 2.1019.0xx0 Product manual 8.1019.8002EN / 2024-04-30...
  • Page 4 Disclaimer Deficiencies arising from circumstances that are not the responsibility of Metrohm, such as improper storage or improper use, etc., are expressly excluded from the warranty. Unauthorized modifications to the product (e.g., conversions or attachments) exclude any liability on the part of the manufacturer for resulting damage and its consequences.

  • Page 5: Table Of Contents

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of contents Table of contents 1 Overview OMNIS Coulometer Module – Product description ... 1 OMNIS Coulometer Module – Product versions ....1 About the documentation ........... 2 Further information .............. 2 Displaying accessories ............3 2 Safety OMNIS Coulometer –...
  • Page 6 Filling the coulometric Karl Fischer titration cell ..... 26 Mounting the coulometric Karl Fischer titration cell ..27 Connecting the electrodes ..........29 6 Start-up Initial start-up by Metrohm ..........31 7 Coulometric titration OMNIS Coulometer Module – Principle of coulometry according to Karl Fischer ........... 32 OMNIS Coulometer Module –...
  • Page 7 ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of contents 12 Technical specifications 12.1 Ambient conditions ............50 12.2 OMNIS Coulometer Module – Energy supply ....50 12.3 OMNIS magnetic stirrer – Dimensions ......50 12.4 OMNIS Coulometer Module – Dimensions ....... 51 12.5 Magnetic stirrer – Dimensions ........... 51 12.6 OMNIS Coulometer Module –...

  • Page 9: Overview

    You can request information on special applications in the "Application Bulletins" and "Application Notes", available free of charge via the regional Metrohm representative responsible. Various monographs on the subjects of titration techniques and electrodes are also available. OMNIS Coulometer Module – Product versions...

  • Page 10: About The Documentation

    Additional information on the product is available on the following pages: Metrohm website https://guide.metrohm.com – Documents as PDF, ￭ overview of product family, information on applications and details of accessories. Metrohm Knowledge Base https://guide.metrohm.com – Thematically ￭ filtered individual content, videos, information on OMNIS Software. ￭￭￭￭￭￭￭￭...

  • Page 11: Displaying Accessories

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Overview Displaying accessories Up-to-date information on the scope of delivery and on optional accesso- ries can be found on the Metrohm website. 1 Searching for a product on the website Go to https://www.metrohm.com. ￭ Click on ￭ Enter the article number of the product (e.g. 2.1001.0010) into ￭...

  • Page 12: Safety

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 2 Safety OMNIS Coulometer – Intended use Metrohm products are used for the analysis and handling of chemicals. Usage therefore requires the user to have basic knowledge and experience in handling chemicals. Knowledge regarding the application of fire preven- tion measures prescribed for laboratories is also mandatory.

  • Page 13: Responsibility Of The Operator

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Safety Responsibility of the operator The operator must ensure that basic regulations on occupational safety and accident prevention in chemical laboratories are observed. The opera- tor has the following responsibilities: Instruct personnel in the safe handling of the product. ￭...

  • Page 14: Safety Instructions

    Dispose of chemically contaminated materials (e.g. cleaning material) in ￭ accordance with regulations. Proceed as follows in case of a return shipment to Metrohm AG or a ￭ regional Metrohm representative: – Decontaminate the product or product component.

  • Page 15: Danger From Highly Flammable Substances

    If you suspect that liquid has penetrated the instrument, disconnect the ￭ instrument from the energy supply. Then have the instrument checked by a regional Metrohm service representative. 2.4.5 Danger during transport of the product Chemical or biological substances may be spilled during the transport of the product.

  • Page 16: Design Of Warning Messages

    Design of warning messages ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Design of warning messages The present documentation uses warning messages as follows. Structure Severity of the danger (signal word) Type and source of danger Consequences of disregarding the danger Measures for averting the danger Hazard levels Signal color and signal word designate the hazard level.
  • Page 17 ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Safety Warning signs / meaning Warning signs / meaning General warning sign Warning of hot surface Warning of sharp object (cut/ Warning of hand injuries (crush- puncture) ing) Warning of electrical voltage Warning of corrosive substances Warning of optical radiation Warning of a laser beam Warning of flammable materials Warning of biological hazard...

  • Page 18: Functional Description

    OMNIS Coulometer Module – Overview ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 3 Functional description OMNIS Coulometer Module – Overview Figure 1 OMNIS Coulometer Module (with magnetic stirrer) – Overview Internal measuring interface Support rod (6.2016.050) Titration cell holder (6.02047.020) Clamping ring (6.2013.010) Magnetic stirrer Control bar of the magnetic stirrer Status display ￭￭￭￭￭￭￭￭...

  • Page 19: Coulometric Karl Fischer Titration Cell - Versions

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Functional description 3.1.1 Coulometric Karl Fischer titration cell – Versions Figure 2 3 versions of the coulometric Karl Fischer titration cell Karl Fischer titration cell / 80–250 mL / Karl Fischer titration cell made of coulometric (6.1464.320) amber glass / 80–250 mL / coulometric (6.1464.323) Karl Fischer titration cell with 2 side openings / 80–250 mL / coulometric...

  • Page 20: Coulometric Karl Fischer Titration Cell - Overview

    OMNIS Coulometer Module – Overview ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 3.1.2 Coulometric Karl Fischer titration cell – Overview Figure 3 Coulometric Karl Fischer titration cell (equipped) – Overview Adsorber tube (6.1403.030) Indicator electrode cable (6.02104.040) With ground-joint sleeve (6.2713.020) With blue coding for polarizable metal elec- trodes In combination with an OMNIS Sample Robot Oven, if necessary with tubing olive...

  • Page 21: Omnis Coulometer Module - Function

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Functional description Indicator electrode Opening for application versions With ground-joint sleeve (6.2713.000) Ground-joint stopper (6.1437.000) with ground-joint sleeve (6.2713.000) e.g. double Pt wire electrode for coulometry (6.0341.100) Screw cap (6.2701.040) Septum (6.1448.020) for manual sample addition Karl Fischer titration cell / 80–250 mL / Stirring bar coulometric 25 mm (6.1903.030)

  • Page 22: Omnis Module - Indicators

    OMNIS Module – Indicators ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Coulometric Karl Fischer titration cell (6.1464.323) made of amber ￭ glass, Coulometric Karl Fischer titration cell (6.1465.320) with 2 side open- ￭ ings. The coulometric Karl Fischer titration cell is attached to a titration cell holder on the support rod.

  • Page 23: System - Signals

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Functional description System – Signals System components with status indicators show their operating status with colors and/or flashing patterns. The meaning of the colors and flash- ing patterns is explained in the following table. Visual signal Meaning LED lights up yellow. System start or initialization LED flashes yellow (slowly).

  • Page 24: Omnis Coulometer Module - Interfaces

    OMNIS Coulometer Module – Interfaces ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ OMNIS Coulometer Module – Interfaces Figure 5 OMNIS Coulometer Module – Connector MDL connector MDL = Metrohm Device Link Connection socket for connecting cables between OMNIS instruments. ￭￭￭￭￭￭￭￭...
  • Page 25 ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Functional description Figure 6 OMNIS Coulometer or OMNIS Coulometer Module – Internal measuring interface Indicator GENERATOR Indicator for the GENERATOR outlet Outlet for generator electrode (gray coding) INPUT 1 INPUT 2 Temperature sensor (red coding) Temperature sensor (red marking) Measuring input for polarizable metal elec- Measuring input for potentiometric sensor trode (blue coding)

  • Page 26: Delivery And Packaging

    Delivery ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 4 Delivery and packaging Delivery Inspect the delivery immediately upon receipt: Check the delivery against the delivery note to ensure completeness. ￭ Check the product for damage. ￭ If the delivery is incomplete or damaged, contact your regional Met- ￭...

  • Page 27: Installation

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Installation 5 Installation Installation by Metrohm As a basic rule, the installation of the system is carried out by the regional Metrohm service representative. Setup location The product is only suitable for operation indoors and may not be used in explosive environments.
  • Page 28 Mounting the magnetic stirrer accessories ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1 Mounting the support rod Screw the support rod onto the stand attachment. ￭ 2 Mounting the clamping ring Push the clamping ring over the support rod with the groove fac- ￭ ing upward. ￭￭￭￭￭￭￭￭...

  • Page 29: Filling The Adsorber Cartridge

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Installation 3 Mounting the titration cell holder Press the green locking lever on the titration cell holder. ￭ Push the titration cell holder over the support rod. ￭ To fix in place, release the green locking lever at the desired ￭...
  • Page 30 Filling the adsorber cartridge ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Adsorber cartridge / adsorber tube Article number Figure Adsorber tube for coulometric Karl Fischer titration 6.1403.030 cell Adsorber tube for cylinder unit 6.1619.020 Adsorber tube for waste bottle for 6.1609.000 OMNIS Dosing Module ￭￭￭￭￭￭￭￭...
  • Page 31 ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Installation 1 Removing the lid from the housing Adsorber cartridge: Unlatch and remove the lid including the seal ￭ from the housing. Adsorber tube: Remove the lid by pulling it out of the housing. ￭ 2 Removing the molecular sieve (if present) Remove the molecular sieve and regenerate for at least 24 hours ￭...

  • Page 32: Equipping The Coulometric Karl Fischer Titration Cell

    Equipping the coulometric Karl Fischer titration cell ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Adsorber cartridge: Hook the lid including the seal into the hous- ￭ ing side and close it by clicking it into place. Adsorber tube: Seal the housing with the lid. ￭ At average humidity, replace the molecular sieve approx. every 6 weeks.
  • Page 33 ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Installation The adsorber tube of the generator electrode (6.1403.030) is filled ￭ with cotton and molecular sieve (see "Filling the adsorber cartridge", chapter 5.4, page 21). When using a dosing module: The adsorber tube for reagent replace- ￭ ment (6.1619.020) is filled with cotton and molecular sieve. Required accessories: Indicator electrode, generator electrode, adsorber tube, etc.

  • Page 34: Filling The Coulometric Karl Fischer Titration Cell

    Filling the coulometric Karl Fischer titration cell ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 7 Fill the Karl Fischer titration cell.(see "Filling the coulometric Karl Fischer titration cell", chapter 5.6, page 26). 8 Depending on the application, insert the required adapter into the opening for application versions. See also Coulometric Karl Fischer titration cell –...

  • Page 35: Mounting The Coulometric Karl Fischer Titration Cell

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Installation Use of a generator electrode without diaphragm Prerequisite: The Karl Fischer titration cell is completely equipped with a generator ￭ electrode without diaphragm. Pre-dry the components in the oven at 50 °C. 1 Remove the right ground-joint stopper from the Karl Fischer titration cell.
  • Page 36 Mounting the coulometric Karl Fischer titration cell ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 2 Checking the position of the titration cell The titration cell is positioned in the center of the magnetic stirrer. ￭ 3 Setting the clamping ring Push the clamping ring under the titration cell holder. ￭...

  • Page 37: Connecting The Electrodes

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Installation Connecting the electrodes CAUTION Damage to the indicator electrode The indicator electrode will be damaged if it is connected to the con- nector for the generator electrode. The two electrodes have the same plug-in head and can be connected incorrectly. The connectors on the instrument are different.
  • Page 38 Connecting the electrodes ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 4 Guiding out the cable Guide the cables out going under the bar. 5 Close the lid. ￭￭￭￭￭￭￭￭...

  • Page 39: Start-Up

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Start-up 6 Start-up Initial start-up by Metrohm As a basic rule, the initial start-up of the system is carried out by the regional Metrohm service representative. ￭￭￭￭￭￭￭￭...

  • Page 40: Coulometric Titration

    OMNIS Coulometer Module – Principle of coulometry according to Karl Fischer ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 7 Coulometric titration The coulometric Karl Fischer titration is a variation of the classic water content determination method according to Karl Fischer. OMNIS Coulometer Module – Principle of coulome- try according to Karl Fischer The coulometric Karl Fischer titration is a variation of the classic water content determination method according to Karl Fischer.

  • Page 41: Omnis Coulometer Module - Working With Water Standards

    This chapter contains a few notes concerning sample addition. An exhaus- tive discussion of this topic is not possible here. Further notes can be found in the literature by the reagent manufacturers and in the following Metrohm Application Bulletins: Bulletin no. Title No.
  • Page 42 The best way for you to determine the injected sample amount is to weigh the sample by difference. Glass syringes should be used for the determination of traces and val- idations. Metrohm recommends obtaining these from a specialized syringe manufacturer. Highly volatile samples and samples of low viscosity should be cooled before sampling.

  • Page 43: Omnis Coulometer Module - Optimum Working Condi- Tions

    When a titration cell that has been well dried-out beforehand is put into operation with a generator electrode without diaphragm, then the basic drift will be reached within approx. 30 minutes. Metrohm recommends shaking the titration cell carefully and repeatedly during this time.
  • Page 44 OMNIS Coulometer Module – Optimum working conditions ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ A contaminated indicator electrode can be carefully cleaned with an abra- sive cleaner (6.2802.000 polishing set or toothpaste). After the cleaning, rinse with ethanol. The two Pt wires of the indicator electrode should run as parallel as possi- ble to one another.

  • Page 45: Operation And Control

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Operation and control 8 Operation and control Operation The product can be operated via the OMNIS Software. Further information on the OMNIS Software under OMNIS Help. Magnetic stirrer – Operation Figure 7 Magnetic stirrer – Control bar Status display On/Off Multi-colored (see "Switching the magnetic stirrer on and...

  • Page 46: Switching The Magnetic Stirrer On And Off

    Magnetic stirrer – Operation ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 8.2.1 Switching the magnetic stirrer on and off 1 Switching the magnetic stirrer on Press the key. The magnetic stirrer stirs with the most recently used stirring rate. 2 Switching the magnetic stirrer off Press the key once again.

  • Page 47: Reagent Replacement

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Operation and control Reagent replacement The electrolyte solutions must be replaced in the following cases: The titration cell is too full. ￭ The KF reagent has reached its capacity limit. ￭ The drift is too high and cannot be reduced by shaking the titration ￭...
  • Page 48 Reagent replacement ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Figure 8 Reagent replacement with OMNIS Dosing Module – Example Aspiration tip (6.1543.200) Stoppers for reagent replacement without antidiffusion valve (6.1446.060) with ground-joint sleeve (6.2713.000) Adapter for reagent replacement FEP tubings (6.1805.100) (6.2730.030) with nipple and O-ring OMNIS Liquid Adapter (6.01600.010) Adsorber tube for cylinder unit on a bottle with KF reagent...

  • Page 49: Reagent Replacement With Omnis Solvent Module

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Operation and control Required accessories: (see figure 8, page 40) ￭ 1 Assembling stoppers Screw the nipple of the adapter with the O-ring onto the stopper. ￭ Remove the antidiffusion valve from the aspiration tip. ￭ Slide the aspiration tip through the stopper. ￭...
  • Page 50 Reagent replacement ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ The fresh reagent is pumped into the titration cell via the OMNIS Solvent Module. Figure 9 Reagent replacement with OMNIS Solvent Module Siphon Breaker (6.01600.200) PTFE tubing (6.1805.200) on bottle with KF reagent Waste bottle. (6.1608.030) Adapter for reagent replacement (6.1446.220) with ground-joint sleeve (6.2713.000) For a reagent replacement with the OMNIS Solvent Module, a tubing...

  • Page 51: Manual Reagent Replacement

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Operation and control (see figure 9, page 42) ￭ 1 Inserting the adapter Place the ground-joint sleeve over the adapter. ￭ Insert the adapter together with the ground-joint sleeve into the ￭ right-hand ground-joint opening of the titration cell with the aspi- ration tips facing downwards.
  • Page 52 Short pressing (≤ 1 s): The aspiration takes place during the saved ￭ pumping duration. Press the key again to stop the procedure pre- maturely. The reagent replacement can also be carried out automatically via the OMNIS Software. Additional information under https:// www.metrohm.com. ￭￭￭￭￭￭￭￭...

  • Page 53: Maintenance

    Metrohm recommends having the products maintained by specialist ￭ personnel of Metrohm AG as part of an annual service. Shorter mainte- nance intervals may be necessary if you frequently work with caustic and corrosive chemicals.
  • Page 54 Protect live components (e.g. power supply unit, power cord, con- ￭ nection sockets) against moisture. Always have maintenance work and repairs on electrical compo- ￭ nents carried out by a regional Metrohm service representative. Prerequisite: The product is switched off and disconnected from the energy supply. ￭ Required accessories: Cleaning cloth (soft, lint-free) ￭...

  • Page 55: Troubleshooting

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Troubleshooting 10 Troubleshooting Messages on malfunctions and errors are displayed in the control software or in the embedded software (e.g. on the display of an instrument) and contain the following information: Descriptions of causes of malfunctions (e.g. jammed drive) ￭...
  • Page 56 Karl Fischer titration ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Problem Cause Remedy The titration does not finish. The titration cell is leaking. Check the seals and the ￭ septum. Replace if neces- sary. Replace the molecular ￭ sieve. The stop criterion is unsuita- Adjust the control parameters ble.

  • Page 57: Disposal

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Disposal 11 Disposal Properly dispose of chemicals and of the product to reduce negative effects on the environment and public health. Local authorities, waste dis- posal companies or dealers provide more detailed information on disposal. Observe the WEEE EU directive (WEEE = Waste Electrical and Electronic Equipment) for the proper disposal of waste electronic equipment within the European Union.

  • Page 58: Technical Specifications

    Ambient conditions ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 12 Technical specifications 12.1 Ambient conditions Nominal function range +5 to +45 °C at max. 80% relative humidity, non-condens- Storage +5 to +45 °C at max. 80% relative humidity, non-condens- Altitude / Pressure range Max. 3,000 m.a.s.l. / min.

  • Page 59: Omnis Coulometer Module - Dimensions

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Technical specifications 12.4 OMNIS Coulometer Module – Dimensions Measurements Width 142 mm Height 358 mm Depth Without magnetic stirrer 284 mm With magnetic stirrer 400 mm Weight Type Without magnetic stirrer 4.0 kg With magnetic stirrer 4.7 kg 12.5 Magnetic stirrer –...

  • Page 60: Magnetic Stirrer - Housing

    12.8 OMNIS Coulometer Module – Connectors specifica- tions Energy supply via MDL Socket Round plug 6-pin, size 1, 0° (ODU MINI-SNAP) Metrohm Device Link 1 connector Internal measuring interface INPUT 1 Socket round plug 7-pin, size 0, 45° Potentiometric pH, ISE, Redox...

  • Page 61: Display Specifications

    ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Technical specifications Temperature Temp. Measuring input for temperature sensors of the Pt1000 or NTC type for automatic tempera- ture compensation Polarizer Pol. Measuring input for polarizable electrodes INPUT 2 Socket round plug 7-pin, size 0, 45° Potentiometric pH, ISE, Redox Measuring input for potentiometric electro- Temperature...

  • Page 62: Measurement Specifications

    Measurement specifications ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Iodine production for Karl Fischer water determination Determination range 0.01– 200.0 mg H Recommended water quantity Resolution 0.1 μg H Titration rate max. 2.24 mg H O/min ±3 μg H at 10 μg– 1000 μg H Reproducibility Sample: Standard from the reagent manufac- turer...
  • Page 63 ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Technical specifications Measuring accuracy ±0.6 °C in the measuring range +10.0 °C to +40.0 °C Polarizer Ipol DC Polarization current –200.0 to +200.0 µA adjustable in 0.5 µA steps Measuring range –2,400 to +2,400 mV Measuring resolution 0.1 mV Ipol AC Polarization current 5µA, 10µA, 20µA, 30µA...

  • Page 64: Magnetic Stirrer - Specifications

    Magnetic stirrer – Specifications ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ applies for all measur- ing ranges without sen- sor error, under refer- ence conditions, meas- uring interval 100 ms Reference conditions Relative humidity ≤ 60% Ambient temperature +25 °C (±3 °C) Instrument status min. 30 minutes in operation 12.12 Magnetic stirrer –...

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