Ce produit n'est plus disponible. Certains accessoires, pièces de rechange ou des services peuvent être encore disponibles.
| Services disponibles | |
|---|---|
| Réparation | No |
| Etalonnage | No |
| Support gratuit | No |
Aperçu
The 223, manufactured by Delmhorst, is a cylindrical gypsum block that estimates soil water potential from -10 to -1000 kPa. It connects to a datalogger via an AM16/32-series multiplexer.
Lire la suiteAvantages et caractéristiques
- Compatible avec les multiplexeurs de la série AM16/32 permettant la mesure de plusieurs capteurs
- La connexion au multiplexeur empêche l'électrolyse de détruire prématurément la sonde
- Mesure une large gamme de potentiel matriciel
- Atténue l'effet du sel dans le sol
- Pas de maintenance requise
- Compatible avec la plupart des centrales de mesure de Campbell Scientific
Images
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Description technique
The 223 determines soil water potential by measuring electrical resistance. When the 223 is wet, electrical resistance is low. As the 223 dries, resistance increases.
The 223 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.
The 223 connects to a datalogger via an AM16/32-series multiplexer. Because the multiplexer contacts close only during measurement, electrical currents leading to premature degradation of the 223 are eliminated.
Campbell Scientific recommends removing the 223 during winter.
Compatibilité
Veuillez noter : Ce qui suit montre des informations de compatibilité générales. Ce n'est pas une liste complète de tous les produits compatibles.
Centrale de mesure
| Produits | Compatibilité | Note |
|---|---|---|
| CR1000 (obsolète) | ||
| CR3000 (obsolète) | ||
| CR6 | ||
| CR800 (obsolète) | ||
| CR850 (obsolète) |
Informations de compatibilité supplémentaires
Multiplexers
Multiplexers that can be used with the 223 include the AM16/32B, AM16/32A (retired), AM16/32 (retired), and AM416 (retired).
Data Logger Considerations
Two single-ended channels and one excitation channel per probe are required; the channels are shared by several probes when routed through an AM16/32-series multiplexer.
Spécifications
| Matière | Gypsum |
| Gamme de mesure | -10 to -1000 kPa |
| Calibration | Individual calibrations are required for accurate measurements. Refer to the sensor manual for more information. |
| Température de fonctionnement | Soil temperatures above freezing |
| Espérance de vie | 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.) |
| Poids | 180 g (0.4 lb) |