How is Temperature Stability Measured?
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How is Temperature Stability Measured?
Typically, a controller manufacturer will give temperature stability specifi cations over one hour and stability over 24 hours. There are several caveats to the testing that can only be exposed by understanding the test protocol as it compares to your application. Stability is how close the actual load temperature stays to the setpoint temperature over time. We operate a temperature controller with a thermoelectric, laser diode, and thermistor. We monitor actual temperature of the sensor. Error is the difference between actual sensor and setpoint temperatures. Our typical (TYP) stability specifi cation is three times the standard deviation of the error over the specified time period.
