Small Diameter Platinum Resistance Thermometer
Netsushin have developed the extremely small PRT elements, which can be set into φ0.5mm sheath pipe. formerly, PRT probe diameters were not available for such a small application. If a probe smaller than 3.2mm was required, inaccurate thermocouples were used for the application. Netsushin’s UNR-35 series is now available for a wide range of applications with real stability, accuracy, and speed.
Features
As small as φ0.5mm lead pencil
Our Dia.0.4mm elements have enabled to make probe size extremely small.
![](https://netsushin.co.jp/en/wp-content/uploads/2022/08/p5-11-2-1024x424.jpg)
Heat transfer to the sensor occurs quickly.
Time constants from 0℃ to 100℃ are as fast as 0.4seconds.
This sensor has low heat capacity and responds to even slight changes in temperature.
Example Model number
![](https://netsushin.co.jp/en/wp-content/uploads/2022/09/en-p3-3.jpg)
Specification
Model | UNR-351 | UNR-350K |
---|---|---|
Resistance Value (at 0ºC) | Pt100Ω, JPt100Ω | |
Current | 0.5mA, 1mA, 2mA | |
Temperature range | -200℃~250℃ | -200℃~400℃ |
Probe Diameter | Φ0.5 Φ0.8 Φ1.0 Φ1.6 Φ2.0(mm) | Φ1.0 Φ1.6 Φ2.0(mm) |
Probe Length | Min 10mm, Max 500mm | Min80mm, Max 1000mm |
Tolerance | ClassA JIS ±(0.15+0.002|t|), ClassB JIS ±(0.3+0.005|t|) | |
Number of leadwires | 4 leads, 3 leads | |
Other | Please contact us for a quote on your custom design. |