COMPONENT

43347 and 43502

RTD Temperature Probe and Aspirated Radiation Shield

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* fan-

aspirated 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.

www.campbellsci.eu/43347_43502

More info: +44(0) 1509 828 888

Very High Accuracy

Good for air-quality applications

80 Hathern Road, Shepshed, LE12 9GX UK | +(0)1509 828888 | sales@campbellsci.co.uk | www.campbellsci.eu

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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.

*The 43347 and 43502 are manufactured by R. M. Young.

The 43347 probe

The 43502 attached to

a vertical pole