This product is not available for new orders. We recommend ordering: CVF4-L.
| Services Available | |
|---|---|
| Repair | No |
| Calibration | No |
| Free Support | No |
概览
CVF3为通风/加热单元，用于CMP6、CMP11和CMP21短波辐射表。有益于让辐射表的穹顶免于冰霜、露水和灰尘的影响。
图像
技术说明
CVF3使用风扇和进气口过滤器将干净的空气吹到辐射表的穹顶表面，风扇连续运转，可以减少灰尘和脏物的聚集，消散雨滴，以及稳定穹顶的温度。
CVF3含有一个5 W和一个10 W的加热器。5 W加热器用于轻微加热穹顶的温度，比环境温度稍高，以防止露水和霜的生成。10 W加热器用于极端气候，熔化雪和冰。
产品规格
- Power Supply: 12 Vdc, 1.3 A (with 10 W Heater)
- Operating Temperature: -40° to +70°C
- Ventilation Power: 5 W continuously
- Heating Power: 5 W or 10 W
- Heater Induced Offset: < 1 W/m2 (with CMP11)
- Weight without cable: 1.6 kg (3.5 lb)
- Height: 12.9 cm (5.1 in.)
- Diameter: 22.4 cm (8.8 in.)
兼容性
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
数据采集器
| Product | Compatible | Note |
|---|---|---|
| 21X (retired) | ||
| CR10 (retired) | ||
| CR10X (retired) | ||
| CR200X (retired) | ||
| CR206X (retired) | ||
| CR211X (retired) | ||
| CR216X (retired) | ||
| CR23X (retired) | ||
| CR295X (retired) | ||
| CR3000 (retired) | ||
| CR500 (retired) | ||
| CR5000 (retired) | ||
| CR510 (retired) | ||
| CR800 (retired) | ||
| CR850 (retired) | ||
| CR9000 (retired) |
传感器
| Product | Compatible | Note |
|---|---|---|
| CMP11-L (retired) | ||
| CMP21-L | ||
| CMP6-L (retired) | ||
| CS300-L (retired) | ||
| LI200X-L (retired) |
Additional Compatibility Information
Mounting
The 27084 mounting stand is used to fasten the CVF3 to a CM220 Right-Angle Mounting Bracket or a 17953 1 in. by 1 in. NU-RAIL. The CM220 or 17953 is then attached to a mast or crossarm. The CVF3 is not compatible with the CM245 mounting stand.
Power Considerations
The 10 W heater’s current drain is approximately 850 mA at 12 Vdc, and the 5 W heater’s current drain is approximately 420 mA at 12 Vdc. The ventilator draws an additional 5 W of power at 12 Vdc. These power requirements are large compared to most Campbell Scientific products. Because of this, the CVF3 should be connected to the 21326 Power Net 5 A Power Supply and the 7321 Crydom Relay.
The Crydom relay allows the heater power to be controlled by the data logger program and thus reducing power consumption. For example, the data logger program can turn on the heater only when the light level falls below 20 W/m2 or, if a measurement of air humidity is available, when the dew point of the air falls to within 1ºC of the sensor body temperature.
案例研究
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