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Sensor Technology |
Type "E"
Thermocouple |
| Power Requirements |
No external power is required,
signal is self generating |
| Typical Polygraph Settings |
Sensitivity: 2 - 30
microvolts/mm Low frequency filter/Time constant: 16 Hz or lower/1 second or longer High
frequency filter: 15 Hz |
| Typical Signal Amplitude |
400 microvolts peak to peak (3
element single channel sensor) Typical signal amplitudes may vary considerably. Response
is dependent on such variables as sensor placement, patient airflow sleep position,
ambient room temperature, CPAP pressure, polygraph characteristics, etc. |
| Output Impedance |
Static and dynamic: 7 ohms (3
element single channel sensor) Non-referenced bipolar output |
| Standard Connector Type |
1.5 mm touch-proof safety
connector |
| Wire Length |
7.0 feet |
| Note: Pro-Tech
airflow sensors are non-referenced and produce bipolar microvolt level signals. Proper
signal processing requires the use of AC coupled, referenced differential amplifiers. |
