SO-421 soil oxygen sensor
用途：SO-421的响应时间快，为14秒，专为实验室应用而设计。它配有一个用于校正温度变化的热敏电阻温度传感器和一个电阻加热器，可将膜的温度提高到环境温度以上约2度，以防止聚四氟乙烯膜上发生冷凝并阻挡传感器的扩散路径。典型应用包括在实验室实验中测量O 2，监测室内环境中的气态O 2以进行气候控制，监测堆肥堆和矿井中的O 2水平，监测土壤中的氧化还原电位，以及通过测量O 2来确定呼吸速率密封室中的消耗或土壤/多孔介质中O 2梯度的测量。
SO-421土壤氧气传感器
SO-421土壤氧气传感器
SO-421
氧气传感器
技术参数
输入电压要求
5.5至24 V DC
电流漏极
0.6 mA（静态）; 1.3 mA（有源）
测量范围
0至100％O 2
测量重复性
在20.95％O 2时小于0.1％的mV输出
非线性
小于1％
长期漂移（非稳定性）
每年0.8 mV
耗氧率
2.2μmol O 2每天20.95％O 2和23 C
响应时间
14 s
工作环境
-20至60℃，0至100％相对湿度（非冷凝）; 60至140 kPa
输入电压要求
12 V DC连续（用于加热器），2.5 V DC激励（用于热敏电阻）
加热器电流漏极
6.2 mA（使用12 V DC电源供电时功率为74 mW）
热敏电阻电流
在70 C时
吸收
0.1 mA DC（最大值，假设输入激励为2.5 V DC）
尺寸
32 mm直径，68 mm长度
质量
175 g（5 m）导线）
产地：美国
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