Platinum RTD Types
The following table lists common platinum RTD types and standards. All of these RTD types are supported in NI-DAQmx. Notice that there are some shared standards. The TCR and the Callendar-Van Dusen coefficients are more important than the standards.
| Standards | Material | TCR | Typical R0 (Ω) | Callendar-Van Dusen Coefficient | Notes |
|---|---|---|---|---|---|
| IEC-751 DIN 43760 BS 1904 ASTM-E1137 EN-60751 |
Platinum | 3851 | 100 Ω 1000 Ω |
A = 3.9083 × 10–3 B = –5.775×10–7 C = –4.183×10–12 |
Most common RTDs |
| Low-cost vendor compliant RTD* | Platinum | 3750 | 1000 Ω | A = 3.81 × 10–3 B = –6.02×10–7 C = –6.0×10–12 |
Low-cost RTD |
| JISC 1604 | Platinum | 3916 | 100 Ω | A = 3.9739 × 10–3 B = –5.870×10–7 C = –4.4 ×10–12 |
Used in primarily in Japan |
| US Industrial Standard D-100 American |
Platinum | 3920 | 100 Ω | A = 3.9787 × 10–3 B = –5.8686×10–7 C = –4.167 ×10–12 |
Low-cost RTD |
| US Industrial Standard American |
Platinum | 3911 | 100 Ω | A = 3.9692 × 10–3 B = –5.8495×10–7 C = –4.233 ×10–12 |
Low-cost RTD |
| ITS-90 | Platinum | 3928 | 100 Ω | A = 3.9888 × 10–3 B = –5.915×10–7 C = –3.85 ×10–12 |
The definition of temperature |
| *No standard. Check the TCR. | |||||