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| | | General Information | | |
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| | | What is the initial accuracy Table of Tolerance Values | | |
| | | | | | | | | | | | | | | | | Resistance | Tolerance DIN-IEC-751 | | | | (Continued) | Temperature | Value | Class A | Class B | | | | | Q | °C (Q) | °C (Q) | | | | Generally speaking, if accuracy is | -200 | 18.52 | ±0.55 | (±0.24) | ±1.3 | (±0.56) | | | | your most important concern and the | -100 | 60.26 | ±0.35 | (±0.14) | ±0.8 | (±0.32) | | | | application temperature is between | 0 | 100.00 | ±0.15 | (±0.06) | ±0.3 | (±0.12) | | | | 140°C and 650°C (284°F and | 100 | 138.51 | ±0.35 | (±0.13) | ±0.8 | (±0.30) | | | | 1202°F), RTDs are probably the best | 200 | 175.86 | ±0.55 | (±0.20) | ±1.3 | (±0.48) | | | | choice. Three-wire is the most | 300 | 212.05 | ±0.75 | (±0.27) | ±1.8 | (±0.64) | | | | common but four-wire provides | 400 | 247.09 | ±0.95 | (±0.33) | ±2.3 | (±0.79) | | | | higher system accuracy. | 500 | 280.98 | ±1.15 | (±0.38) | ±2.8 | (±0.93) | | | | | 600 | 313.71 | ±1.35 | (±0.43) | ±3.3 | (±1.06) | | | | | 650 | 329.64 | ±1.45 | (±0.46) | ±3.6 | (±1.13) | | | | | | | | | | | | | | |
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| | | Where t Is the actual temperature, In °C, of the platinum elements. DIN class A: ±[0.15 + 0.002 |t|]°C DIN class B: ±[0.30 + 0.005 |t|]°C | | |
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| | | Thermistors | | |
| | | Thermistors are a cost effective choice when working with a narrow range of temperatures. | | |
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| | | Resistance at 25°C (77°F) and ranges: | | |
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| | | Epoxy Bead Tolerance ±1%Q (+0.3°C) | | |
| | | Glass Bead Tolerance ±15%n (+3°C) | | |
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| | | -60 to 150°C (-76 to 302°F) -60 to 150°C (-76 to 302°F) | | |
| | | #11 #12 | | 1000Q 3000Q | | |
| | | #16 100,000£2 -60 to 260°C (-76 to 500°F) *Other thermistors available on request. | | |
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| | | 18 | | |
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