Class 1/10 DIN RTD Sensor Physics: Platinum Wire Purity & Alpha Coefficient 0.00385

Standard industrial PT100 sensors conform to Class A (+/-0.15C at 0C). Primary and secondary standards demand 1/10 DIN (+/-0.03C at 0C) or 1/5 DIN tolerance for reference metrology.

1. Platinum Wire Purity & Strain-Free Mounting

The DB Metron Series utilizes 99.999% pure annealed platinum wire wound on a cross-shaped ceramic or quartz mandrel to eliminate thermal expansion strain.

2. Callendar-Van Dusen Equation Calibration

Characterize individual probe coefficients A, B, and C over -200C to +660C to achieve millikelvin measurement accuracy.