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• Standard Platinum Resistance Thermometer(BB(S) 962/2.5)
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Standard Platinum Resistance Thermometer(BB(S) 962/2.5)
BB(S) 962/2.5 is the Standard Platinum Resistance Thermometer jointly developed with National Institute of Advanced Industrial Science and Technology (AIST/NMIJ) as an interpolation device for measurements from +660℃ to approximately +962℃. Employing a sensing element with a single helix coil structure (Japan Pat. No.3380523) provides superior stability at high temperature and vibration resistance. Adopting a sapphire coil frame and a sapphire sheath has improved both electrical insulation and the contamination of the sensing element.
Standard SpecificationsCharacteristics
Sensing Element:Single helix coil wound in a sapphire sensing frame at noninductive winding (L ≦ 40mm)
Sensing Element:Platinum (4-wires connection)
Sapphire Sheath:φ7mm x approx.570mm length
Sensing Handle:φ19mm x approx.100mm, Aluminum outer casing
Lead Wires:4 teflon insulated copper wires jacketed with cross-linked polyethylene x 2.5m
Temperature Range:from +660.323℃(Al FP) to 961.78℃( Ag FP)
Resistance Value:approx. 25.5Ω R0
Resistance Ratio:WGa (29.7646℃) ≧ 1.11807 WAg(961.78℃)≧4.2844
Reproducibility:within 5mK
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