The TSD200 pulse plethysmogram (PPG) transducer operates with the PPG100C amplifier to record the blood volume pulse waveform via optical (photoplethysmogram) methods.
The TSD200 consists of a matched infrared emitter and photo diode detector, which transmits changes in infrared reflectance resulting from varying blood flow. Blood is highly reflective of near infrared light wavelengths, due to the heme subunit of hemoglobin. When the PPG transducer is placed on the skin, in proximity to capillaries, the reflectance of the infrared light from the emitter to the detector will change in accordance to capillary blood volume. The PPG waveform peaks when capillary blood volume is maximized.
The ergonomic housing design improves contact with the subject and helps reduce motion artifact. The TSD200 is primarily designed for finger attachment, but can be taped to other body locations. The TSD200 comes with a shielded 3-meter cable.
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