Chino, Japan
Chino R800 Series Standard Platinum Resistance Thermometers
Made in Japan
Manufacturer: Chino Corporation
Model: R800 Series
Models
Models | Types |
|---|---|
| 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 |
| R800-3T | Low resistance type standard platinum resistance thermometer for high temperature |
| R800-4 | Platinum-Cobalt resistance thermometer for cryogenic temperature |
Features
- 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.
Specifications
| Model | R800-0 | R800-2 | R800-3 | R800-3T | R800-4 |
|---|---|---|---|---|---|
| Measuring range | 13K to 30°C | 73K to 661°C | 0°C to 962°C | 4K to 0°C | |
| Resistance value (at 0°C) | 25.5Ω±1Ω | 2.55Ω±0.1Ω | 0.25Ω± 0.01Ω | 100Ω± 4Ω | |
| Measuring current | 1mA | 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 | — | |
| Sensitivity | 0.1Ω/K | 0.01Ω/K | 1mΩ/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 Φ0.3mm x 35mm | 4-conductor type cabtyre cord 2m with gold plated | 4-conductor type platinum wire Φ0.3mm x 35mm | ||
| Frame | Cross quartz | Cross quartz | |||
| Protection tube | Capsule type platinum sheath Φ5mm x 43mm | Delustered quartz tube (Φ7.0 ± 0.5mm) x 600mm | Delustered quartz tube (Φ7.0 ± 0.5mm) x 700mm | Capsule type platinum sheath Φ5mm x 43mm | |
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