RTD Temperature Probe and Aspirated Radiation Shield Very High Accuracy Good for air-quality applications The 43502 attached to a vertical pole Overview The 43347* is a highly-accurate RTD that often provides delta temperature measurements for air quality applications. Typically, it is housed in the 43502* fanaspirated radiation shield, which greatly reduces radiation errors. The 43347 may also be housed in a 41003-5 or Met21 Naturally Aspirated Shield if fan-driven aspiration is not required. Benefits and Features Uses 1000 Ω RTD for highly accurate air temperature measurements Well-suited for air quality applications 43502 fan-aspirated radiation shield reduces radiation errors for more accurate measurements Ideal for delta temperature measurements used in calculating atmospheric stability class Standard RTD uncertainty is ±0.3ºC. With optional three point calibration, uncertainty is only ±0.1ºC. Technical Description Delta Temperature Measurements To determine delta temperature, a 43347 probe mounted in a 43502 shield is attached to the mast of a UT930 tower, while another 43347 probe mounted in a 43502 shield is attached to the tower at a 2-m height. The temperature difference of the two measurement heights is calculated and used to determine atmospheric stability as required by the EPA. 43502 Aspirated Radiation Shield 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 centre 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 errror of less than ±0.2ºC. The blower operates off a 230 V to 12 Vdc transformer that is included with the shield. More info: +44(0) 1509 828 888 www.campbellsci.eu/43347_43502 80 Hathern Road, Shepshed, LE12 9GX UK | +(0)1509 828888 | [email protected] | www.campbellsci.eu UK | AUSTRALIA | BRAZIL | CANADA | CHINA | COSTA RICA | FRANCE | GERMANY | SE ASIA | SOUTH AFRICA | SPAIN |

43347 - R.M. Young RTD NIST calibrated Temperature Probe in 4-wire configuration with 3 m standard cable. Other cable lengths available in 5 m increments e.g. 5, 10, 15 m. Optional 3-point calibration for the 43347 that provides ±0.1°C uncertainty (-50° to +50°C). 43502 - R.M. Young Aspirated Radiation Shield with AC power supply (1.8 m lead). 41003-5 - 10-plate Gill Naturally Aspirated Radiation Shield for applications that do not require fan-aspiration. It requires the #27251 split nut (see below). #27251 - Split nut plug that is required to mount the 43347 in the 41003-5 radiation shield....