Standard Platinum Resistance Thermometers are widely used as standard or reference thermometers to calibrate other thermometers and to measure temperature precisely in primary and secondary laboratories, and as reference thermometers on dry-wells and temperature baths.
AM1860 has a temperature range from -200 °C to +670 °C.
AM1850 has a temperature range from -200 °C to +500 °C.
The reference platinum resistance thermometers (SPRT) AM1860 and AM1850 have very low drift rates and affordable prices, but provide powerful productivity.
Both the AM1860 and the AM1850 SPRTs feature a very low drift rate. To improve the durability of these SPRTs, Inconel™ 600 is used in place of quartz glass for the sheath material of the thermometer. A special capsule is adopted to protect the platinum sensor wire from contamination introduced by a metal sheath at high temperatures. All parts used in the thermometer are thoroughly cleaned and treated at high temperature before assembly. The gas mixture filling the thermometer is well-controlled to reduce the oxidation effect as much as possible. These world class probes fully meet the ITS-90 criteria of standard thermometers at a very competitive price. They are widely used as reference thermometers for drywell block calibrators and temperature baths.
200 ... +670 °С; 200 ... +500 °С
25.5 Ω or 100 Ω
at 0.01°C* <0.003°C at TPW after 100 hours at 661°C, <0.01°C/year typical <0.002°C at TPW after 100 hours at 500°C, <0.008°C/year typical
6.35mm (OD) x 500mm (L); 6.35mm (OD) x 480mm (L)