PLETH Clip Sensor (ActiveTwo)

The PLETH Clip Sensor is specifically designed for use with the ActiveTwo EEG system from BioSemi B.V. This Plethysmography sensor utilizes an infrared photoelectric sensor to measure changes in blood oxygenation. This Plethysmography (PLETH) Clip sensor is best attached to areas such as the earlobe and can also be used on fingers or toes.

PLETH Clip Sensors comes with a 150 cm connection cable and terminates in a DIN type plug compatible with the ActiveTwo.

This PLETH Clip Sensor connects to the front DIN 4-pole socket on the ActiveTwo EEG system.

One PLETH Clip Sensor (ActiveTwo) per pack.

Technical Specifications

• Sensor Type: IR Plethysmographs
• Power Voltage: 6 to 9V DC
• Output: 5 to 50mV
• Output Impedance: 1kOhm Nominal
• Sensor Size: 15 x 15 x 6.3mm
• Weight: 28g
• Connector: DIN Type Plug for ActiveTwo AUX Input
• Compatibility: ActiveTwo, BioSemi
• Packaging: One PLETH Clip Sensor (ActiveTwo) per pack

Technical Note

We configure your ActiveTwo EEG and install the PLETH module here in our office. Should the ActiveTwo have an existing GSR module installed, we can replace the GSR module with a combo GSR/PLETH module and include a GSR/PLETH splitter cable.

Application Note

The ear clip uses infrared light transmitted through the tissue and works best on fleshy areas such as the earlobe. The signal's amplitude depends primarily on the blood volume in the capillary bed directly beneath the sensor, so it may be necessary to move the sensor around to find the best signal.

Ambient light may affect the output: if it does, a covering of black, opaque material over the sensor and location should remove such interference.

Do not immerse the device in fluids or handle the device by its cable.