Resumen
The A21REL-12 contains four internal relays that allow a Campbell Scientific datalogger to control up to four external ac or dc devices.
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Descripción detallada
The A21REL-12's internal relays are single-pole double-throw. This relay driver may be powered by the datalogger power supply or a separate 12 Vdc battery.
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Número de FAQs relacionadas con A21REL-12: 1
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Installation time varies and depends on the instrumentation to be attached to the mast, as well as how the guy wires are anchored (for example, to the feet or using Duckbill anchors). On level ground with the guy wires attached to the feet, the installation time is approximately 60 minutes. Campbell Scientific recommends the assistance of one person at the base of the mast and two additional people to help raise the mast with the guy wires.
Compatibilidad
Nota: lo siguiente muestra información de compatibilidad notable. No es una lista de todos los productos compatibles.
Dataloggers
| Producto | Compatible | Nota |
|---|---|---|
| 21X (retired) | ||
| CR10 (retired) | ||
| CR1000 (retired) | ||
| CR10X (retired) | ||
| CR200X (retired) | ||
| CR216X (retired) | ||
| CR23X (retired) | ||
| CR300 (retired) | ||
| CR3000 (retired) | ||
| CR310 | ||
| CR350 | ||
| CR500 (retired) | The CR500 has only one control port capable of providing a control signal. | |
| CR5000 (retired) | ||
| CR510 (retired) | The CR510 has only one control port capable of providing a control signal. | |
| CR800 (retired) | ||
| CR850 (retired) | ||
| CR9000 (retired) | ||
| CR9000X (retired) |
Información de compatibilidad adicional
Data Logger Considerations
Each of the four relays is controlled by a data logger control port.
Cables
| Cable(s) Used | Number of Relays Controlled |
| One CABLE3CBL-L | 1 |
| One CABLE4CBL-L | 2 |
| One CABLE5CBL-L | 3 |
| Two CABLE3CBL-L | 4 |
Power Considerations
The A21REL-12 may be powered by the data logger power supply or a separate 12 Vdc battery.
Enclosure Considerations
The A21REL-12 requires a non-condensing environment. No mounting bracket is available. The peripheral is typically mounted in the data logger enclosure with double-sided tape or Velcro.
Especificaciones
| Function | Allows a data logger to control up to four external ac or dc devices. |
| Number of Channels | 4 |
| Contact Ratings |
|
| Coil Current | 13 mA/relay |
| Relays | dual single-pole, double-throw relays |
| Operating Temperature | -25° to +50°C |
| Operating Voltage | 12 Vdc |
| Dimensions | 14.0 x 6.9 x 3.0 cm (5.5 x 2.7 x 1.2 in.) |
| Weight | 227 g (8 oz) |
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