Sensors are designed for routine cryogenic temperature measurements, especially in the presence of high magnetic fields what is possible due to their low magnetic field error. They are enclosed in a ceramic casing
TVO resistance sensors have many advantages, including:
> High long-term calibration stability
> High measurement resolution (> 400 Ω / K)
> Minimal influence of magnetic field and radiation on measurement
> Wide measuring range from 3.8 K to 300 K
The sensors are calibrated by the comparative method which is based on measuring voltages of the sensor under calibration and the reference germanium thermometer. All measurements are computer-controlled and made using the four-wire sensing technique to eliminate the effects of the resistance of wires. What distinguishes our product is the innovative measurement method, which allows to collect the temperature characteristic of sensors throughout the whole calibration range, giving a resolution of less than 40 mK.
| Sensors parameters | |
|---|---|
| Operating range | 3.8 K - 300 K |
| Thermal | About 1ms |
| Resistance in 300K | 850 Ω - 1000 Ω |
| Resistance 3.8 K | 2800 Ω - 4500 Ω |
| Stability | <0.5%/10 years |
| Dimensions | 1.3 mm x 2.5 mm x 8 mm |
| Influence of the presence of magnetic field on the measurement | ||
|---|---|---|
| Temperature, K | Magnetic induction, T | Measurement accuracy ΔT/T, % |
| 4.2 | 2 | 0.4-1 |
| 3 | 0.8-2 | |
| 6 | 2.8-6.4 | |
