A time constant indicates the responce of an RTD to change in temperature. A common expression is the time it takes a sensor to reach 63,2% of the temperature grade of moving water. The response time depends on the mass of the sensor and the rate of thermal transfer between the external surface of the element and the environment in which it is immersed. A small time constant reduces errors in systems that are subject to rapid temperature changes.
A time constant indicates the responce of an RTD to change in temperature. A common expression is the time it takes a sensor to reach 63,2% of the temperature grade of moving water. The response time depends on the mass of the sensor and the rate of thermal transfer between the external surface of the element and the environment in which it is immersed. A small time constant reduces errors in systems that are subject to rapid temperature changes.
