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压力表各级精度等级允许误差值如下：
| 精确度 等级 测量 上限 | 1级 | 1.6级 | 2.5级 | 4级 | |
| 0.1 | ±0.001 | ±0.0016 | ±0.0025 | ±0.004 | |
| 0.16 | ±0.0016 | ±0.00256 | ±0.004 | ±0.0064 | |
| 0.25 | ±0.0025 | ±0.004 | ±0.0062 | ±0.01 | |
| 0.4 | ±0.004 | ±0.0064 | ±0.01 | ±0.016 | |
| 0.6 | ±0.006 | ±0.0096 | ±0.015 | ±0.024 | |
| 1.0 | ±0.01 | ±0.016 | ±0.025 | ±0.04 | |
| 1.6 | ±0.016 | ±0.0256 | ±0.04 | ±0.064 | |
| 2.5 | ±0.025 | ±0.04 | ±0.062 | ±0.1 | |
| 4 | ±0.04 | ±0.064 | ±0.1 | ±0.16 | |
| 6 | ±0.06 | ±0.096 | ±0.15 | ±0.24 | |
| 10 | ±0.1 | ±0.16 | ±0.25 | ±0.4 | |
| 16 | ±0.16 | ±0.256 | ±0.4 | ±0.64 | |
| 25 | ±0.25 | ±0.4 | ±0.62 | ±1 | |
| 40 | ±0.4 | ±0.64 | ±1 | ±1.6 | |
| 60 | ±0.6 | ±0.96 | ±1.5 | ±2.4 | |
| 100 | ±1 | ±1.6 | ±2.5 | ±4 | |
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