遮荫，抽取空气流过传感器
概览
43502 紧凑的强制通风防辐射罩，具有R. M. Young 产品特点，小巧，易于安装，较43408防辐射罩花费更低。为使传感器免受太阳辐射干扰，43502使用了鼓风机将环境空气抽到传感器周围。测量的温湿度结果更为精确。43502遮阴罩通常用于43347 RTD探头，但也适用于直径0.9-inch以内的温湿度探头。安装支架包括遮阴罩附在标杆或桅杆上，直径达2英寸。
优势与特点
- Reduces radiation errors by shading and drawing ambient air past the sensor for more accurate measurements
图像
技术说明
43502 强制通风防辐射罩适用于与43347 RTD温度探头，为空气质量应用领域提供温度差测量。43502 采用同轴向下的通风口和一个小篷遮阳，以此隔离直接和间接辐射。
43347 探头垂直安装在进气口的中部。12 Vdc 的鼓风机推动环境空气进入防辐射罩，使其经过探头，这样可以减少辐射误差。测量的温度根误差小于±0.2°C。 防辐射罩内的鼓风机可由115Vac转换为12Vdc。
产品规格
| Operating Temperature Range | -50°C to +60°C |
| Aspiration Rate | 5 to 11 m s-1 (16 to 36 fps) depending on sensor size |
| Ambient Temperature | < 0.2°C (0.4°F) RMS at 1000 W/m2 intensity |
| Delta T | < 0.05°C (0.1°F) RMS with like shields equally exposed |
| Power Requirements | 12 to 14 Vdc @ 500 mA (for blower) |
| Mounting | V-Block and U-Bolt for vertical pipe with 2.5 to 5.0 cm (1.0 to 2.0 in.) diameter |
| Diameter | 20 cm (8 in.) |
| Length | 33 cm (13 in.) |
| Weight | 1.1 kg (2.5 lb) |
兼容性
Sensors
The 43502 is intended to be used with the 43347 RTD probe, but other temperature sensors may also fit inside of this shield. The CS215-L Temperature and RH sensor can be housed in the 43502 if a special adapter from RM Young (RM Young pn. 43537) is used.
Mounting
The 43502 mounting bracket has a U-bolt configured for attaching the shield to a tripod mast, tower leg, or vertical pipe with up to 2” OD. By moving the U-bolt to the other set of holes, the bracket can be attached to a CM202, CM204, or CM206 crossarm. Each of these crossarms includes the CM210 Mounting Kit for attaching the crossarm to a tripod mast or tower leg. For our towers (e.g., UT20, UT30), an additional CM210 Crossarm Mounting Kit can be ordered for attaching the crossarm to two tower legs for additional stability.