Der 43502 ist ein kompakter elektrisch belüfteter Strahlungsschutz von RM Young. Er läßt sich leichter aufbauen und ist auch kostengünstiger als der Vorgänger 43408. Mit einem Ventilator bläßt er ständig Umgebungsluft über den Sensor und schützt ihn gleichzeitig vor Einfluss durch direkte Sonneneinstrahlung. Dadurch können genauere Messungen von Lufttemperatur und -feuchte erreicht werden. Der 43502- Strahlungsschutz wird normalerweise mit dem 43347 RTD Temperatursensor verwendet, es passen aber auch andere Sensoren mit einem Durchmesser von bis zu 2,2 cm. Mit der beigefügten Halterung kann der 43502 a, Masten mit einem Durchmesser von bis zu 5 cm angebracht werden.
Lesen Sie mehrThe 43502 Fan Aspirated Radiation Shield is typically used with the 43347 RTD Temperature Probe to provide delta temperature measurements for air quality applications. The 43502 employs concentric downward facing intake tubes and a small canopy shade to isolate the temperature probe from direct and indirect radiation.
The 43347 probe mounts vertically in the center of the intake tubes. A brushless 12 Vdc blower motor pulls ambient air into the shield and across the probe to reduce radiation errors. This allows temperature to be measured with an RMS error of less than ±0.2°C. The blower operates off a 115 Vac to 12 Vdc transformer that is included with the shield.
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) |
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.
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.