Page 4
Technische Dokumentation Metrohm AG CH-9100 Herisau techdoc@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.
Connecting to a Ti-Touch ............. 6 Connecting to a Titrino plus ..........6 Power supply with USB power supply unit ......7 Installing the Optrode ............7 4 Operation and maintenance Setting the wavelength ............10 Sensor care ................12 5 Troubleshooting .....................
Page 6
Figure 6 Power supply at the USB connector of a Titrino plus ......6 Figure 7 Connecting the Optrode to a Titrino plus ........... 7 Figure 8 Diagrams showing propeller stirrer, sensor and titration tip during a titration. a) clockwise stirring direction, b) counterclockwise stirring direction.
Optrode to be used for titration like other sensors. Intended use The Optrode is designed for use with a titrator in analytical laboratories. It is intended solely as an optical sensor for photometric titrations. This sensor can be used in chemicals and flammable solvents. Usage of the Optrode therefore requires the user to have basic knowledge and experience in handling toxic and caustic substances.
This symbol draws attention to a possible hazard due to heat or hot instrument parts. WARNING This symbol draws attention to a possible biological hazard. CAUTION This symbol draws attention to possible damage to instruments or instrument parts. NOTE This symbol highlights additional information and tips. ■■■■■■■■ Optrode...
The correct disposal of your old equipment will help to prevent negative effects on the environment and public health. More details about the disposal of your old equipment can be obtained from your local authorities, from waste disposal companies or from your local dealer. ■■■■■■■■ Optrode...
■■■■■■■■■■■■■■■■■■■■■■ 2 Overview Figure 1 Optrode – Overview USB plug SGJ sleeve For supplying the sensor with power. Storage vessel (6.2008.040) Sensor F plug For connecting to a titrator (connector Ind.). Magnetic switch Optical circuit board For switching between the LEDs.
3 Installation 3 Installation The Optrode's USB cable is used to supply power to the electronics and the sensor's light source. The actual sensor cable (measuring signal) has a conventional F plug for connecting to the indicator measuring input (Ind.) on a titrator.
Connecting to a Ti-Touch Figure 4 Power supply at the USB connector of a Ti-Touch Figure 5 Connecting the Optrode to a Ti-Touch Connecting to a Titrino plus 6.2151.100 Figure 6 Power supply at the USB connector of a Titrino plus ■■■■■■■■...
■■■■■■■■■■■■■■■■■■■■■■ 3 Installation In order to connect the Optrode's USB cable to a Titrino plus, a USB Mini (OTG) - USB A (6.2151.100) adapter is required (see figure). Figure 7 Connecting the Optrode to a Titrino plus Power supply with USB power supply unit A 6.2166.000 USB power supply unit is available if power to the Optrode...
Page 14
■■■■■■■■■■■■■■■■■■■■■■ 3.5 Installing the Optrode The sensor must be firmly installed on the titration head. Particularly when automation is used, you have to account for the cable movement. During the titration, it is important that the solution is well mixed. The stir- ring rate should be high enough to form a small vortex.
■■■■■■■■■■■■■■■■■■■■■■ 3 Installation Figure 8 Diagrams showing propeller stirrer, sensor and titration tip during a titration. a) clockwise stirring direction, b) counter- clockwise stirring direction. Propeller stirrer Sensor Titration tip ■■■■■■■■ Optrode...
4 Operation and maintenance Setting the wavelength The Optrode has eight LEDs (LED = light-emitting diode) on its optical cir- cuit board that serve as light sources. Each LED emits light in a different wavelength range. The LEDs are labeled with their primary wavelength on the optical circuit board.
Switching between LEDs via tiamo The Optrode is recognized automatically by the control software tiamo (version 2.5 and higher). However, this only works if the Optrode is con- nected directly to the titrator or control instrument via USB. The wavelength is changed as follows in tiamo: 1 Double-click on the command in the method run.
The wavelength remains set even if the Optrode is switched off or the power supply is interrupted (USB connection). Sensor care The Optrode does not require any special care. Store the sensor dry in the storage vessel provided. If it becomes dirty, the Optrode's glass shaft can be cleaned with warm water and a small amount of detergent or ethanol.
■ ple amount / fill volume. No light. None of There is no power supply Connect the Optrode to a USB port on a ■ the LEDs are lit up. to the Optrode. titrator or a USB power supply unit.
Page 20
■ sured value is con- Dilute the solution. ■ stant at approxi- The Optrode is dirty. Clean the sensor, particularly the smooth sur- mately 0 mV. faces in the measuring gap (see Chapter 4.2, page 12). Signal is too high.
■■■■■■■■■■■■■■■■■■■■■■ 6.1 Optrode 6.1.8 Safety specifications This instrument fulfills the following electrical safety requirements: CE marking in accordance with the EU directives: 2004/108/EC (EMC Directive, EMC) ■ Design and testing According to EN/IEC/UL61010-1, protection class III. Safety instructions This document contains safety instructions which have to be followed by the user in order to ensure safe operation of the instrument.
Need help?
Do you have a question about the Optrode and is the answer not in the manual?
Questions and answers