现场传感器校准程序,以保证气流过程分离 (BaPS) 测量的质量
Hannah Munz1, Joachim Ingwersen1, Thilo Streck1
1Biogeophysics Section, Institute of Soil Science and Land Evaluation, University of Hohenheim, 70599 Stuttgart, Germany.
Sensors (Basel, Switzerland)
|July 11, 2023
概括
简单的校准方法确保准确的土壤呼吸和化测量,使用气表过程分离 (BaPS) 系统. 这些程序保持传感器质量可靠的土壤科学研究.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 分析化学 分析化学
背景情况:
- 气表过程分离 (BaPS) 系统测量了土壤微生物呼吸和化率.
- 精确的传感器校准对于BaPS系统的最佳运行至关重要.
- 现有的校准方法对于现场质量控制可能是复杂的或昂贵的.
研究的目的:
- 为BaPS传感器开发简单,廉价和灵活的现场校准程序.
- 确保微生物呼吸和化率测量的准确性和可靠性.
- 为BaPS传感器系统提供质量控制方法.
主要方法:
- 使用差压计对压力传感器进行校准.
- 同时校准的O2和CO2传感器使用连续的气体混合物 (O2/N2和CO2/N2).
- 使用线性回归模型来分析校准数据.
主要成果:
- 为BaPS传感器开发了简单的校准程序.
- 线性回归模型有效地描述了校准数据.
- O2传感器的精度受到气体混合物的精度的影响;O2传感器表现出老化易感性,但具有高时间稳定性.
- 校准偏差影响了化率高达12.5%,呼吸率高达5%.
结论:
- 开发的校准程序对BaPS传感器的现场质量控制有效.
- 这些方法确保了土壤呼吸和化测量的质量.
- 这些程序有助于快速识别传感器故障,提高数据可靠性.
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