CHINO
Temperature Traceability
R800 Series Standard Resistance Thermometers
The R800 series standard platinum resistance thermometers conforming to the International Temperature Scale, 1990 (ITS-90) have been commercialized under the guidance of the National Research Laboratory of Metrology. R800 Series Standard Resistance Thermometers
TabView Example - Basic From Existing Markup
    The thermometers cover from vapor point of helium to freezing point of silver.
    Various models are prepared for low temperature and high temperature.
    Fixed point calibration and precision comparison calibration are available.
    Model Specification
    R800-0 Standard platinum resistance thermometer for low temperature
    R800-2 Standard platinum resistance thermometer for medium temperature
    R800-3 Standard platinum resistance thermometer for high temperature
    R800-3L Low resistance type standard platinum resistance thermometer for high temperature
    R800-9 Standard platinum resistance thermometer
    R800-4 Platinum-Cobalt resistance thermometer for cryogenic temperature
    Model R800-0 R800-2 R800-3 R800-3L R800-9 R800-4
    Measuring range 13K to 30°C 90K to 661°C 0°C to 962°C 90K to 300°C 4K to 0°C
    Resistance value(at 0°C) 25.5Ω±1Ω 2.55Ω±0.1Ω 0.25Ω± 0.01Ω 100Ω± 1Ω 100Ω± 4Ω
    Measuring current 1mA 1 to 10mA 1mA
    Temperature characteristic R(-38.8344°C)/R(0.01°C) 0.844235 R(29.7646°C)/R(0.01°C) 0.844235 R(29.7646°C)/R(0.01°C) 1.11807 and R(961.78°C)/R(0.01°C) 4.2844 R(100°C)/R(0°C) 1.3920 --
    Sensitivity 0.1Ω/K 0.01Ω/K 1mΩ/K 0.4Ω/K Min. 0.09Ω/K (at 12K) Max. 0.40Ω/K
    Sealed gas Helium gas Mixture gas (argon and oxygen) Helium gas
    Connecting lead wire 4-conductor type platinum wire 0.3mm x 35mm 4-conductor type cabtyre cord 2m with gold plated 4-conductor type platinum wire 0.3mm x 35mm
    Frame Cross quartz Cross mica Cross quartz
    Protection tube Capsule type platinum sheath 5mm x 43mm Delustered quartz tube (7.0 ± 0.5mm x 600mm Delustered quartz tube (7.0 ± 0.5mm x 700mm Delustered quartz tube (7.0 ± 0.5mm x 600mm Capsule type platinum sheath 5mm x 43mm
    PS Sheet R800/C800 Series PSE-253C Download
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