利用できるサービス | |
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修理 | 非対応 |
キャリブレーション | 非対応 |
フリーサポート | 非対応 |
The 227, manufactured by Delmhorst, is a cylindrical gypsum block that estimates soil water potential from -10 to -1000 kPa. It connects directly to a data logger.
続きを読むThe 227 determines soil water potential by measuring electrical resistance. When the 227 is wet, electrical resistance is low. As the 227 dries, resistance increases.
The 227 cylindrical block is composed of gypsum cast around two concentric electrodes, which confine current flow to the interior of the block, greatly reducing potential ground loops. Gypsum located between the outer electrode and the soil creates a buffer against salts that may affect the electrical conductivity.
Campbell Scientific recommends removing the 227 during winter.
Material | Gypsum |
Measurement Range | -10 to -1000 kPa |
Calibration | Individual calibrations are required for accurate measurements. Refer to the sensor manual for more information. |
Operating Temperature | Soil temperatures above freezing |
Life Expectancy | Two freeze-thaw cycles |
Electrode Description | Concentric cylinders |
Center Electrode | Excitation |
Outer Electrode | Ground |
Cylinder Diameter | ~2.25 cm (0.88 in.) |
Cylinder Length | ~2.86 cm (1.25 in.) |
Weight | 180 g (0.4 lb) |
注意: 以下は代表的な互換性情報を示しています。互換性のある製品や互換性のない製品をすべて網羅したリストではありません。
製品 | 互換性 | 注意 |
---|---|---|
21X (リタイア) | ||
CR10 (リタイア) | ||
CR1000 (リタイア) | ||
CR10X (リタイア) | ||
CR200X (リタイア) | ||
CR206X (リタイア) | ||
CR211X (リタイア) | ||
CR216X (リタイア) | ||
CR23X (リタイア) | ||
CR295X (リタイア) | ||
CR3000 (リタイア) | ||
CR500 (リタイア) | ||
CR5000 (リタイア) | ||
CR510 (リタイア) | ||
CR800 (リタイア) | ||
CR850 (リタイア) | ||
CR9000 (リタイア) | ||
CR9000X (リタイア) |
Two single-ended channels and one excitation channel per probe are required.
227-Lに関するよくある質問の数: 3
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