Automatic Standard of
Refraction Index Measurement
All measurement operations are fully automatic.These operations include:
- Measurement of prism angles and minimum deflection angle. The uncertainty of angular measurements are less than 0.1 arcs;
- High precision temperature measurement. Our digital thermometer allows measuring the absolute temperature with accuracy of 1 mK.
The minimum-deviation method of measurement is used because it enables one to attain the highest accuracy. Measurement method is applicable to solid and liquid substances.
|Apex angle measurement accuracy||0,4"|
|Refractive index measurement range||1,0 ... 3,0|
|Refractive index measurement accuracy||1,5 · 10-6|
|Light sources||He-Ne laser, Ar-Kr laser|
|Detector||PbS, Photomultiplier tube, solid-state photodiode|
|Spectral range||193 nm ... 2300 nm|