Este producto ya no está disponible. Algunos accesorios, recambios o servicios pueden todavía estar disponibles.
| Services Available | |
|---|---|
| Repair | No |
| Calibration | No |
| Free Support | No |
Resumen
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.
Leer másVentajas y características
- Compatible con multiplexores AM16/32, permitiendo medir múltiples sensores
- La conexión con multiplexor previene electrólisis y daño prematuro de la sonda
- Mide un amplio rango de potencial mátrico
- Buffers salts in soil
- No maintenance required
- Compatible con la mayoría de dataloggers Campbell Scientific
Imágenes
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Descripción detallada
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.
Especificaciones
| Material | Gypsum |
| Rango de medida | -10 to -1000 kPa |
| Calibration | Individual calibrations are required for accurate measurements. Refer to the sensor manual for more information. |
| Temperatura funcionamiento | 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.) |
| Peso | 180 g (0.4 lb) |
Compatibilidad
Nota: lo siguiente muestra información de compatibilidad notable. No es una lista de todos los productos compatibles.
Dataloggers
| Producto | Compatible | Nota |
|---|---|---|
| CR1000 (retired) | ||
| CR3000 (retired) | ||
| CR3000 (retired) | ||
| CR6 | ||
| CR800 (retired) | ||
| CR850 (retired) |
Información de compatibilidad adicional
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.