220 lines
10 KiB
Markdown
220 lines
10 KiB
Markdown
# 温度传感器阻值表
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> [!info] 模块说明
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> 本模块提供NTC热敏电阻的温度-阻值对应关系表，用于温度传感器检测、故障诊断和系统校准。
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## 基本特性
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### 传感器类型
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- **类型**：NTC热敏电阻（负温度系数）
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- **温度范围**：-40°C ~ 40°C
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- **阻值范围**：4.974 kΩ ~ 378.050 kΩ
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- **精度等级**：±4.36% ~ ±10.76%（根据温度范围）
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### 工作原理
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- **NTC特性**：温度升高，阻值降低
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- **线性度**：在常用温度范围内具有良好的线性度
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- **响应时间**：快速响应温度变化
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## 温度-阻值对应表
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### 负温度范围 (-40°C ~ 0°C)
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| 温度(℃) | 最小阻值(kΩ) | 中心阻值(kΩ) | 最大阻值(kΩ) | 偏差(%) | ΔT(℃) |
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|---------|--------------|--------------|--------------|--------|-------|
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| -40 | 341.02 | 378.05 | 418.74 | 10.76% | 1.51 |
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| -39 | 318.82 | 352.96 | 390.41 | 10.61% | 1.50 |
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| -38 | 298.21 | 329.70 | 364.18 | 10.46% | 1.49 |
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| -37 | 279.07 | 308.12 | 330.89 | 10.31% | 1.48 |
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| -36 | 261.29 | 288.10 | 317.37 | 10.16% | 1.47 |
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| -35 | 244.75 | 269.51 | 296.50 | 10.01% | 1.46 |
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| -34 | 229.37 | 252.23 | 277.13 | 9.87% | 1.45 |
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| -33 | 215.06 | 236.18 | 259.15 | 9.72% | 1.44 |
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| -32 | 201.73 | 221.25 | 242.45 | 9.58% | 1.43 |
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| -31 | 189.31 | 207.36 | 226.94 | 9.44% | 1.42 |
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| -30 | 177.74 | 194.47 | 212.61 | 9.30% | 1.41 |
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| -29 | 166.97 | 182.45 | 199.41 | 9.16% | 1.40 |
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| -28 | 156.94 | 171.25 | 187.29 | 9.02% | 1.39 |
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| -27 | 147.62 | 160.83 | 176.13 | 8.88% | 1.38 |
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| -26 | 138.96 | 151.16 | 165.89 | 8.74% | 1.37 |
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| -25 | 130.92 | 142.20 | 156.54 | 8.60% | 1.36 |
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| -24 | 123.47 | 133.92 | 148.04 | 8.46% | 1.35 |
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| -23 | 116.56 | 126.28 | 140.36 | 8.32% | 1.34 |
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| -22 | 110.17 | 119.25 | 133.38 | 8.18% | 1.33 |
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| -21 | 102.69 | 111.09 | 120.07 | 8.08% | 1.31 |
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| -20 | 96.82 | 104.61 | 112.93 | 7.95% | 1.29 |
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| -19 | 91.31 | 98.55 | 106.25 | 7.82% | 1.28 |
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| -18 | 86.16 | 92.87 | 100.02 | 7.69% | 1.27 |
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| -17 | 81.32 | 87.56 | 94.18 | 7.57% | 1.26 |
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| -16 | 76.79 | 82.58 | 88.73 | 7.44% | 1.25 |
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| -15 | 72.54 | 77.92 | 83.62 | 7.32% | 1.23 |
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| -14 | 68.55 | 73.54 | 78.83 | 7.19% | 1.22 |
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| -13 | 64.80 | 69.44 | 74.35 | 7.07% | 1.21 |
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| -12 | 61.28 | 65.59 | 70.15 | 6.95% | 1.20 |
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| -11 | 57.97 | 61.98 | 66.21 | 6.83% | 1.18 |
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| -10 | 54.86 | 58.59 | 62.52 | 6.71% | 1.17 |
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| -9 | 51.93 | 55.40 | 59.05 | 6.59% | 1.16 |
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| -8 | 49.18 | 52.41 | 55.80 | 6.47% | 1.15 |
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| -7 | 46.59 | 49.59 | 52.74 | 6.35% | 1.13 |
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| -6 | 44.15 | 46.94 | 49.87 | 6.24% | 1.12 |
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| -5 | 41.85 | 44.45 | 47.17 | 6.12% | 1.11 |
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| -4 | 39.69 | 42.11 | 44.63 | 6.00% | 1.09 |
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| -3 | 37.65 | 39.90 | 42.25 | 5.89% | 1.08 |
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| -2 | 35.72 | 37.82 | 40.00 | 5.78% | 1.07 |
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| -1 | 33.91 | 35.86 | 37.89 | 5.66% | 1.05 |
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| 0 | 32.195 | 34.013 | 35.902 | 5.55% | 1.04 |
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### 正温度范围 (1°C ~ 40°C)
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| 温度(℃) | 最小阻值(kΩ) | 中心阻值(kΩ) | 最大阻值(kΩ) | 偏差(%) | ΔT(℃) |
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|---------|--------------|--------------|--------------|--------|-------|
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| 1 | 30.579 | 32.272 | 34.029 | 5.44% | 1.03 |
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| 2 | 29.05 | 30.63 | 32.26 | 5.33% | 1.01 |
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| 3 | 27.61 | 29.08 | 30.60 | 5.22% | 1.00 |
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| 4 | 26.25 | 27.62 | 29.03 | 5.11% | 0.98 |
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| 5 | 24.97 | 26.24 | 27.55 | 5.01% | 0.97 |
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| 6 | 23.75 | 24.93 | 26.16 | 4.90% | 0.95 |
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| 7 | 22.60 | 23.70 | 24.84 | 4.79% | 0.94 |
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| 8 | 21.51 | 22.54 | 23.60 | 4.69% | 0.92 |
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| 9 | 20.48 | 21.44 | 22.42 | 4.58% | 0.91 |
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| 10 | 19.51 | 20.40 | 21.31 | 4.48% | 0.90 |
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| 11 | 18.60 | 19.42 | 20.25 | 4.38% | 0.89 |
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| 12 | 17.73 | 18.50 | 19.28 | 4.28% | 0.88 |
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| 13 | 16.90 | 17.62 | 18.35 | 4.18% | 0.87 |
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| 14 | 16.11 | 16.78 | 17.46 | 4.08% | 0.86 |
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| 15 | 15.36 | 15.98 | 16.61 | 3.98% | 0.85 |
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| 16 | 14.65 | 15.23 | 15.82 | 3.88% | 0.84 |
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| 17 | 13.98 | 14.52 | 15.07 | 3.78% | 0.83 |
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| 18 | 13.34 | 13.85 | 14.37 | 3.68% | 0.82 |
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| 19 | 12.74 | 13.22 | 13.71 | 3.58% | 0.81 |
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| 20 | 12.16 | 12.60 | 13.03 | 3.48% | 0.74 |
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| 21 | 11.62 | 12.02 | 12.43 | 3.38% | 0.72 |
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| 22 | 11.10 | 11.48 | 11.85 | 3.28% | 0.71 |
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| 23 | 10.61 | 10.96 | 11.31 | 3.19% | 0.69 |
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| 24 | 10.14 | 10.47 | 10.79 | 3.09% | 0.68 |
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| 25 | 9.70 | 10.00 | 10.30 | 3.00% | 0.68 |
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| 26 | 9.26 | 9.56 | 9.85 | 3.09% | 0.68 |
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| 27 | 8.85 | 9.14 | 9.43 | 3.19% | 0.71 |
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| 28 | 8.45 | 8.73 | 9.02 | 3.28% | 0.73 |
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| 29 | 8.07 | 8.35 | 8.63 | 3.37% | 0.76 |
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| 30 | 7.72 | 7.99 | 8.27 | 3.46% | 0.78 |
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| 31 | 7.38 | 7.65 | 7.92 | 3.55% | 0.81 |
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| 32 | 7.05 | 7.32 | 7.58 | 3.65% | 0.84 |
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| 33 | 6.75 | 7.01 | 7.27 | 3.74% | 0.86 |
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| 34 | 6.45 | 6.71 | 6.96 | 3.83% | 0.89 |
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| 35 | 6.18 | 6.42 | 6.68 | 3.92% | 0.91 |
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| 36 | 5.91 | 6.15 | 6.40 | 4.00% | 0.94 |
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| 37 | 5.66 | 5.90 | 6.14 | 4.09% | 0.97 |
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| 38 | 5.42 | 5.65 | 5.89 | 4.18% | 0.99 |
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| 39 | 5.19 | 5.42 | 5.65 | 4.27% | 1.02 |
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| 40 | 4.974 | 5.195 | 5.422 | 4.36% | 1.05 |
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> 注：本表数据基于图片中的准确测量值，温度范围为-40°C至40°C。
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## 关键温度点阻值
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### 常用温度点
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| 温度点 | 中心阻值(kΩ) | 应用场景 |
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|--------|-------------|----------|
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| -10°C | 58.59 | 低温保护 |
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| 0°C | 34.013 | 结霜检测 |
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| 16°C | 15.23 | 制冷下限 |
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| 25°C | 10.00 | 室温标准 |
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| 31°C | 7.65 | 制冷上限 |
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| 40°C | 5.195 | 电加热控制 |
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### 故障诊断参考值
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| 故障类型 | 阻值范围 | 对应温度 | 判断标准 |
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|----------|----------|----------|----------|
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| 开路故障 | >500 kΩ | < -50°C | 阻值过高 |
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| 短路故障 | <1 kΩ | >150°C | 阻值过低 |
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| 传感器老化 | 超出偏差范围 | - | 阻值异常 |
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## 测试方法
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### 1. 阻值测量
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- **测量工具**：万用表（电阻档）
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- **测量条件**：常温25°C ±2°C
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- **测量精度**：±0.1 kΩ
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### 2. 温度验证
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- **验证工具**：恒温箱、标准温度计
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- **验证点**：0°C、25°C、50°C
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- **允许偏差**：±2°C
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### 3. 故障检测流程
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#### 步骤1：外观检查
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- [ ] 检查传感器外观是否完好
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- [ ] 检查连接线是否松动
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- [ ] 检查插头是否氧化
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#### 步骤2：阻值测量
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- [ ] 断开电源，测量传感器阻值
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- [ ] 记录测量值并与标准值对比
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- [ ] 判断是否在允许范围内
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#### 步骤3：温度验证
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- [ ] 将传感器置于已知温度环境
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- [ ] 测量阻值并计算对应温度
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- [ ] 验证温度计算值与实际温度的一致性
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#### 步骤4：动态测试
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- [ ] 快速改变环境温度
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- [ ] 观察阻值变化响应时间
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- [ ] 验证响应时间是否正常（<30秒）
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## 应用场景
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### 1. 室内温度检测
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- **传感器位置**：室内机回风口
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- **检测范围**：16°C ~ 31°C
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- **精度要求**：±1°C
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### 2. 盘管温度检测
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- **传感器位置**：蒸发器/冷凝器盘管
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- **检测范围**：-10°C ~ 40°C
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- **精度要求**：±2°C
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### 3. 室外温度检测
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- **传感器位置**：室外机
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- **检测范围**：-40°C ~ 40°C
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- **精度要求**：±2°C
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### 4. 电加热控制
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- **传感器位置**：电加热器附近
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- **检测范围**：20°C ~ 40°C
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- **精度要求**：±1°C
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## 维护建议
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### 1. 定期检查
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- **检查周期**：每年一次
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- **检查项目**：阻值测量、温度验证
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- **记录要求**：建立传感器档案
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### 2. 更换标准
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- **阻值偏差**：超出标准值±10%
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- **响应时间**：超过30秒
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- **外观损坏**：明显物理损伤
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### 3. 校准方法
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- **校准工具**：标准温度计、恒温箱
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- **校准点**：0°C、25°C、40°C
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- **校准周期**：每2年一次
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---
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## 🔗 相关链接
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- [[月兔直流变频内机功能说明书|返回主目录]]
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- [[基础配置/基本功能概述|基本功能概述]]
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- [[检测与维护/故障处理|故障处理]]
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---
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> [!tip] 使用提示
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> - 测量前确保传感器处于稳定温度环境
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> - 阻值测量时避免人体接触影响
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> - 故障诊断时结合系统运行状态综合判断
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