What is PT100 accuracy class?
Classes such as Class A and Class B define the measurement tolerance of PT100 sensors. Class A is preferred in more precise processes.
Which class for which application?
Class B can be sufficient for general industrial applications, while Class A is more suitable for quality control, laboratory, sensitive process and calibration-focused systems.
Does wiring matter?
2-wire, 3-wire and 4-wire configurations affect measurement accuracy. 3 or 4-wire configurations are preferred as cable distance increases.
Sensor construction
Sheath diameter, insertion length, process connection, cable and head construction also affect measurement stability.
Frequently Asked Questions
Is Class A always better?
It is more accurate, but it may not be necessary for every application. Process tolerance should be considered.
Which wiring is preferred for long cables?
Usually 3-wire or, for higher accuracy, 4-wire configuration is preferred.