ULT Rox™ sensors are designed to achieve ultra-low temperatures down to 5 mK. These sensors are calibrated down to 5 mK and up to 40 K. The package is optimized for thermalization and minimizes optical radiation absorption, thereby reducing heat load and temperature rise from line-of-sight radiation emitted by higher-temperature objects such as a cold plate or surrounding shields. The package is also designed to minimize environmental noise, which is critical for 5 mK measurements. This sensor pairs with the 372 temperature controller to monitor and control temperature below 50 mK.
| Temperature range | 5 mK to 40 K |
| Resistance range | 1 kΩ to 20 kΩ |
| Calibration curve | Required |
| Accuracy | ±1.2 mK at 5 mK |
| Short-term stability | ±15 mK at 4.2 K |
| Magnetic fields | Not recommended |
| Radiation | Not recommended |
| Packages | RS |
| Temperature controller | 372 |