1. Introduction
RRDE-3A is a miniature rotator system for use in constant rotation and hydrodynamic techniques by rotating ring disk electrode in electrochemistry field. A short stainless steel shaft and 12 mm diameter electrode provide a concentric circle electrode system that is capable of high accuracy.
RRDE-3A is electronically controlled by a proportional-integral closed loop circuit driven by a DC servomotor. The compact electrodes are easily and rapidly interchangeable. The unit also provides an adjustable valve system for inert gas purging inside the cell vial.
RRDE-3A can be operated as a stand-alone unit and directly controlled by Model 2325 or other instruments. During or between electrochemical analyses, a built-in gas control allows purging the sample. Besides, easy to remove and replace the cell vial, easy for rinsing, cleaning, and replacing electrodes.
Features
- Remote and manual controlled rotation
- Quasi-oxygen free sample vial design (up to 200 mL)
- Gas line connector is available
- Remote and manual controlled purge lines
- Teflon cap is adapted for ALS reference and counter electrodes
- Cell lead connects directly to Model 2325 and CH Instruments, Inc. potentiostats
- Open architecture for easy access to cell
Specifications
| Size | 190 x (Base: 230, Body: 120) x 400 mm |
| Weight | 3.5 kg |
| Rotational range | 100 to 8,000 rpm |
| Rotation stability | Error, < 1% at 100 to 1,000 rpm rpm < 0.5% at > 1,001 rpm |
| Ring/Disk insulation resistance | > 10 M ohm |
| Electrode to lead pin contact resistance | 5 ohm |
| Rotator shaft | Stainless steel |
| Motor | 12 V, ironless core, low inertial DC servo |
| Power | 12 VDC |
| Operating temperature | 10 to 50 deg C |
| Relative humidity | ≤ 80% |
| Inlet gas pressure | 5 psi (34 KPa) maximum |
| Remote control | Motor ON/OFF TTL or relay input to back panel connection Purge TTL or relay input to back panel connection |
Accessories
| Option | |
For RRDE electrode Click here for detail |
Platinum ring disk working electrode |
| Platinum ring-glassy carbon disk working electrode | |
For RDE electrode Click here for detail |
Glassy carbon disk electrode |
| Platinum working disk electrode | |
| Gold working disk electrode | |
For DRE electrode Click here for detail |
DRE-PGK Pt ring/GC disk replaceable electrode |
| DRE-GCK disk replaceable electrode | |
| Electrodes of other materials and diameters will be fabricated on a custom basis. | |