Transmitter-sensor matching improves RTD accuracy
RTD sensors never follow the ideal curve, but transmitter-sensor matching helps improve accuracy.
Temperature is the most common measurement in the chemical industry. It is employed for a wide variety of purposes from simple monitoring to control of critical processes. If monitoring and trending are the ultimate goals, a stable, highly repeatable measurement is all that is typically required. However, when the temperature measurement is being used for process or quality control, the accuracy of the reading is much more critical.
Depending on reliable data to make process decisions
Those responsible for process optimization initiatives where the objective is to fine tune the efficiency or throughput of a process unit depend on reliable trending data to make decisions on process adjustments. For example, you don't want the temperature information you are analyzing while benchmarking performance or trouble shooting a distillation column to be compromised by an RTD offset somewhere in the data trends/history.