1. Summary
TH0300 is a series of reference high power resistance standards, it’s applied for precise AC and DC current measurement at high power conditions.
2. Features
• Nominal resistance: 0.1 Ω ~ 10 Ω
• Maximum operating current: 11 A
• Long-term stability: 5 ppm/year (typical)
• Temperature coefficient: 1 ppm /°C
• Low thermal potential
• On-site test
3. Applications
• Establish high precision current measurement system
• Calibrate the DC current standard source
• Calibrate high precision resistance meter
☆ DC High Current Precision Measurement |
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• When I ≥ 11 A, establish the current measurement system with I/I transfer standard and precision voltmeter. |
☆ DC Small Current Precision Measurement |
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• when ≤ 11 A, TH0300 can be directly used as I/V transfer standard. |
4. Specifications
Model | Nominal Resistance @ 23°C | Initial Deviation ±ppm) | Accuracy (±ppm) | Annual Stability (±ppm) | Maximum Current (A) | Temperature Coefficient (±ppm/°C) |
TH0300-0.1R | 0.1 Ω | 5 | 2.5 | 15 | 11.0 | 1 |
TH0300-0.2R | 0.2 Ω | 5 | 2.5 | 15 | 5.5 | 1 |
TH0300-0.5R | 0.5 Ω | 5 | 2.5 | 15 | 2.2 | 1 |
TH0300-1R | 1 Ω | 5 | 2.5 | 5 | 1.1 | 1 |
TH0300-2R | 2 Ω | 5 | 2.5 | 5 | 0.55 | 1 |
TH0300-5R | 5 Ω | 5 | 2.5 | 5 | 0.22 | 1 |
TH0300-10R | 10 Ω | 5 | 2.5 | 5 | 0.11 | 1 |
5. General Specifications
Power supply | —— |
Temperature performance | Operating temperature: 18°C ~ 28°C; Storage temperature: -10°C ~ 55°C; |
Humidity performance | Operating humidity: (40%-60%) R·H, no condensation; Storage humidity: 95% R·H, no condensation; |
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