L utilisation d’une électrode à anneau tournant a permis d’obtenir la totalité de la relation J(E) entre la densité de courant J et le potentiel électrode tournante. ETUDE VOLTAMMETRIQUE DE LA REDUCTION DES IODATES A UNE ELECTRODE TOURNANTE DE PLATINE Par J. BADOZ-LAMBLING et C. GUILLAUME. Chem Instrum – Margarit J, Lévy M () Étude theéoretique d’une électrode tournante á double anneau. Partie I. Recherche du facteur d’efficacité.
|Published (Last):||6 April 2007|
|PDF File Size:||17.19 Mb|
|ePub File Size:||18.62 Mb|
|Price:||Free* [*Free Regsitration Required]|
The signal presented at the output jacks is a voltage which is proportional to the rotation rate. Position the motor unit with respect to the glass cell so that the electrode tip is immersed approximately into the test solution. Proper left and Improper right Shaft Insertion Positions.
The earth ground connection on the front panel of the rotator control box serves as a tpurnante common point for such a strategy. Some potentiostats offer both options, and if this is the case, only one of the two options should be used at a time, preferably the chassis terminal.
Users of the rotator should be familiar with all of the information in this section prior to operating the rotator. Several of the photos in this section of the manual show the rotator motor in such an inverted position. The counter electrode is often a simple platinum wire or carbon rod to which an alligator clip is easily affixed. Inspect the shaft to be certain that it is not damaged. Then, the rotating electrode can be moved vertically down into the cell or up out of the cell as needed.
It is important to understand that the low humidity environment found in most glove boxes increases the rate of wear on both the brush contacts and the internal brushes within the motor itself. Most potentiostats offer either a chassis terminal connection or a signal ground DC Electroce connection.
Moteur de recherche d’électrode
Text of the Claims and Abstract are posted: Your request is in progress. The chassis of the motor unit is also normally connected to the chassis of the control unit, and thus, to earth ground. Because the motor control cable which connects the motor unit to the control unit is a shielded cable, the shield assures that the chassis of the motor unit and the chassis of the control unit are electrically connected.
One line of this cable carries an analog rate control signal from the potentiostat to the INPUT jacks on the front panel of tournate control box. Contact Electroce Research for more details. The enclosure has slots along the bottom of the window that provide clearance for routing cell cables and any tubing out of the enclosure. The second important connection that is frequently toudnante not always necessary is to connect the potentiostat to the earth ground see Figure 4.
The MSR rotator is factory configured to use a ratio, which is the ratio compatible with Pine potentiostats. This section of the manual discusses information pertaining to routine operation of the rotator. External control of the rotation rate may involve a signal connection between a potentiostat from one manufacturer being connected to a rotator from another manufacturer. Larger cells may be clamped using a large diameter column clamp see Figure 4.
To mitigate the wear rate of the brush contacts, it is recommended that four special low-humidity brushes sold separately be installed prior to placing the rotator electroce the glove box.
Compromising the floating configuration by earth grounding either the chassis or the DC Common should be avoided when possible, but there are cases where this is the only way to reduce noise in the measured electrochemical signals.
Routing Cables out of the Enclosure.
The small tab electrodw the banana stud provides a good place to attach the alligator clip. Inspect the shaft to be certain that it is securely mounted. To make good contact on opposite sides of the rotating shaft, both of the red brushes left and right sides should be used. To view images, click a link in the Document Description column.
Turn off the power to the rotator and disconnect the power cord from the power source before installing or removing the electrode shaft or before installing or removing an electrode tip electrod the end of the shaft. Do not use an electrode tip which appears to wobble, vibrate, or tilt away from the axis of rotation while rotating.
And because the control unit chassis is connected to earth ground, the motor unit chassis is also in contact with earth ground. An insulating spacer just below the mounting area isolates the mounting area from the electrode contact area.
The other end of the special cable is connected to the potentiostat.
Apply a small amount of a silicon-based grease to the top of eledtrode shaft before installing the shaft into the motor coupling. These older, unshielded motor control cables are easily recognized because they are permanently connected to the control unit.
A smaller base sold separately is available for use in a glove box see Figure 4. List of published and non-published patent-specific documents on the CPD. Users electdode to rely upon this information should consult directly with the source of the information.
The electrode shaft normally rotates in a clockwise direction as viewed from the top of the rotator.