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| Services Available | |
|---|---|
| Repair | No |
| Calibration | No |
| Free Support | No |
Resumen
The CWS220E is a wireless version of our SI-111 infrared radiometer. It measures the surface temperature of an object without physical contact. This radiometer has an internal 868 MHz spread-spectrum radio that transmits data to a CWB100E Wireless Base Station or to another wireless sensor. The 868 MHz frequency is commonly used in Europe.
Leer másVentajas y características
- Proporciona medidas de temperatura superficial en carretera, planta, suelo, nieve y agua
- Radio spread spectrum con frequency-hopping interior, que ofrece mayor alcance y menos interferencia
- Alimentado por batería
- Método fiable, con bajo mantenimiento y consumo, para realizar medidas en aplicaciones en que los sensores con cable no son prácticos o indeseados
- Las transmisiones pueden enrutarse a través de hasta otros tres sensores inalámbricos
- Mide en continuo la temperatura de la superficie
- Ideal para proporcionar promedios espaciales
- Compatible con dataloggers CR300, CR800, CR850, CR1000 y CR3000
Imágenes
Descripción detallada
The CWS220E includes a thermopile, which measures surface temperature, and a thermistor, which measures sensor body temperature. The two temperature sensors are housed in a rugged body that contains a germanium window. It is battery powered using either alkaline batteries or a rechargeable battery and a solar cell.
The CWS220E can route its transmissions through up to three other wireless sensors. A datalogger is connected to the CWB100E base station for processing and storing its data. The CWS220E interfaces with a PC for configuration via the A205 CWS Sensor to PC Interface.
The calibration coefficients used for determining the target temperature by means of the Stefan-Boltzman equation are stored in the CWS220E at the time of calibration.
Why Wireless?
There are situations when it is desirable to make measurements in locations where the use of cabled sensors is problematic. Protecting cables by running them through conduit or burying them in trenches is time consuming, labor intensive, and sometimes not possible. Local fire codes may preclude the use of certain types of sensor cabling inside of buildings. In some applications measurements need to be made at distances where long cables decrease the quality of the measurement or are too expensive. There are also times when it is important to increase the number of measurements being made but the datalogger does not have enough available channels left for attaching additional sensor cables.
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Especificaciones
| Weather Resistance | IP67 rating for sensor and battery pack (Battery pack must be properly installed. Each sensor is leak tested.) |
| Rango temperatura funcionamiento | -25° to +50°C |
| Operating Relative Humidity | 0 to 100% |
| Power Source | 2 AA batteries with a battery life of 1 year assuming sensor samples taken every 10 minutes. (Optional solar charging available.) |
| Average Current Drain | 300 μA (with 15-minute polling) |
| Tiempo de respuesta | < 1 s (to changes in target temperature) |
| Target Temperature Output Signal | 60 μV per °C difference from sensor body |
| Body Temperature Output Signal | 0 to 2500 mV |
| Optics | Germanium lens |
| Rango longitud de onda | 8 to 14 μm (Corresponds to atmospheric window.) |
| Campo de visión (FOV) | 22° half angle |
| Absolute Accuracy |
|
| Uniformity |
|
| Repetitibilidad |
|
| Dimensiones | 15 x 6 x 4.5 cm (5.9 x 2.4 x 1.77 in.) |
| Peso | 270 g (9.6 oz) |
Internal 25 mW FHSS Radio |
|
| Frecuencia | 868 MHz |
| Where Used | Europe |
| FHSS Channel | 16 |
| Potencia salida transmisor | 25 mW (+14 dBm) |
| Sensibilidad receptor | -110 dBm (0.1% frame error rate) |
| Standby Typical Current Drain | 3 μA |
| Receive Typical Current Drain | 18 mA (full run) |
| Transmit Typical Current Drain | 45 mA |
| Average Operating Current | 15 μA (with 1-second access time) |
| Quality of Service Management | RSSI |
| Additional Features | GFSK modulation, data interleaving, forward error correction, data scrambling, RSSI reporting |
Compatibilidad
Nota: lo siguiente muestra información de compatibilidad notable. No es una lista de todos los productos compatibles.
Dataloggers
| Producto | Compatible | Nota |
|---|---|---|
| CR1000 (retired) | ||
| CR200X (retired) | ||
| CR216X (retired) | ||
| CR5000 (retired) | ||
| CR6 | The CR6 datalogger must have data logger OS version 4.0 or higher. | |
| CR800 (retired) | ||
| CR850 (retired) | ||
| CR9000X (retired) |
Información de compatibilidad adicional
Mounting
The CWS220E mounts to a mast or pole via the the 26054 bracket. It is mounted at an appropriate distance from the target where it can measure an individual leaf, a canopy, or any surface of interest. Because the CWS220E is wireless, it can be mounted in many locations that would be problematic for a cabled sensor.
Documentos
Folletos producto
Videos & Tutoriales
Descargas
Wireless Sensor Planner v.1.7 (30.5 MB) 08-08-2013
The Wireless Sensor Planner is a tool for use with Campbell Scientific wireless sensors. It assists in designing and configuring wireless sensor networks.