Temperature changes slowly, making the calibration process very slow as one needs to wait for stabilization. Using a self-calibrating sensor to automate calibrations can come in handy.
That doesn’t mean the process will be shorter. It will still take the same time, but at least one will not have to wait for stabilization when opting for a self-calibrating sensor. The self-calibration procedure does not shorten the process duration, however, actively waiting for the stabilization completion is not required.
Self-calibration entails calibration carried out without any external connections with the process involving routing a known channel of reference to every other channel of the board.
The resulting voltage is then read against various gain settings and compared to a known set of parameters. As a means to compensate for any temperature change, the reference voltage is temperature protected.
A self-calibration process operates on-site and provides the documentation in compliance with the set requirements of regulatory agencies. Verifying that the temperature sensor is functioning as intended in between manual calibration cycles reduces the risk of undetected drifts and the need for frequent calibrations.
Grounded on the temperature at which its ferromagnetic properties suddenly change, the temperature sensor uses a high precision ceramic reference.
For applications using Steam in Place (SIP) operations, the device performs automated inline self-calibration at 118°C. It issues an alarm and displays an error message if there are any deviations to the distributed control system via a local LED.
Below are the advantages of using a self-calibrating sensor:
It has an asset management software that produces printable and uploadable audit-proof calibration certificates
Fully automated storage of up to 350 calibrations that can be used for verification
Early detection of sensor failure, drifts and any measurement errors
Reduces the cost of calibration
Reduced risk of incorrect temperature measurements due to its short calibration intervals
Straightforward visual monitoring via LED