Smart Sensor (SS) electrodes and transducers connect to the TEL100M-C amplifier/transmitter and can generally record biopotentials and other signals for up to 24 hours. Two Ag-AgCl, unpolarizable, electrodes are mounted in individual, ergonomically-designed, polyurethane housings for improved contact. The electrodes are attached to the fingers by VelcroŽ straps. The electrodes have a 6mm (dia) contact area with a 1.6mm cavity to accommodate electrode gel. The SS3A incorporates shielded construction to minimize noise interference and improve recordings.
Specifications mirror the TSD203 tranducer.
Usage Recommendations
When using GEL101 it is important that the gel has a chance to be absorbed and make good contact before recording begins. Accordingly:
1. Abrade the skin at the point of electrode contact; you can use a nail file or an EL PAD abrasion pad.
2. Apply GEL101 to the skin at the point of electrode contact and rub it in.
3. Fill the SS3A electrode cavity with GEL101.
4. Attach the SS3A electrode to the subject.
5. Wait 5 minutes (minimum) before starting to record data.
SS3A Specifications
Electrode Type: Ag/ Ag Cl (unpolarized)
Surface Area: 6mm contact area
Dimensions: 16 mm (long) x 17 mm (wide) x 8 mm (high) (each electrode)
Weight: 4.5 grams (each electrode)
MRI-Compatible: Yes (no ferrous parts)
Sterilizable: Yes (see Biopac for details)
Cable length: 3 meters (shielded)
Cleaning the SS3A:
1) Do not leave GEL in the cavity after use. The electrode cavity must be left clean and dry. If GEL is left in the cavity, the Ag-AgCl electrode disk could degrade quickly with time because the electrode surface is somewhat porous to promote good conductivity to the GEL.
2) To clean the reusable SS3A, use a cotton swab or toothbrush with tap water.
3) Use any lab cleaner with pumice (such as Ajax) with a cotton swab or toothbrush to remove any dark residue from the electrode surface.
4) Use Hydrogen Peroxide solution (2-3%) to brighten the electrode surface (optional) or to sterilize the electrode. Do not place the electrode in solution, but simply clean the electrode surface using a cotton swab. Dry the electrode off completely before storage.
