T90 Response Times
T90 response time refers to the amount of time required for a sensor to reach 90% of its final reading after exposure to a target gas.
For LEL gas detection, the worst-case T90 is specified as under 50 seconds.
T90 values represent expected performance under controlled
conditions. For critical applications, users should account for
environmental and operational variables that may affect sensor
response, including:
Sampling method (Diffusion or Pump): The method can affect how quickly gas reaches the sensor.
Environmental conditions: Conditions such as temperature and humidity may delay sensor response.
Condensation or contamination on sensor membranes: These conditions can interfere with accurate readings until the sensor stabilizes.
Sensor type: Some sensors, such as MPS and IR, may respond differently in oxygen-deficient or inert environments.
