CHINO Works America Inc. - Temperature Traceability - R800 Series Standard Resistance Thermometers

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.

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