43347 RTD Temperature Probe
Very High Accuracy
Good for air-quality applications
weather applications supported water applications supported energy applications supported gas flux and turbulence applications supported infrastructure applications supported soil applications supported


The 43347, manufactured by R. M. Young, 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.

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Benefits and Features

  • Uses 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


Technical Description

To determine delta temperature, a 43347 probe mounted in a 43502 shield is attached to the mast of a UT20 or UT30 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.

The 43347 may also be housed in a 41003-5 Naturally Aspirated Shield if fan-driven aspiration is not required. Additional hardware is required (see Ordering Info and Compatibility).

The standard 43347 probe has an RTD uncertainty of ±0.3°C. If increased accuracy is required, a three point calibration can be ordered that allows the RTD to have an uncertainty of only ±0.1°C.



Sensor Description 1000 Ω Platinum RTD
Measurement Description Temperature
Signal Type/Output Analog voltage
Operating Temperature Range ±50°C
Range ±50°C
Accuracy ±0.3°C at 0°C; ±0.1°C with NIST calibration
Temperature Coefficient 0.00375 Ω/Ω °C
Radiation Error / Ambient Temperature < 0.2°C RMS at 1000 W/m2 intensity (when housed in the 43502 shield)
Radiation Error / Delta T < 0.05°C RMS with 43502 shields equally exposed (when housed in the 43502 shield)
Stainless-Steel Sheath Diameter 0.478 cm (0.188 in.)
Stainless-Steel Sheath Length 6.12 cm (2.41 in.)
Probe Tip Length 10.08 cm (3.97 in.) stainless-steel sheath and molded plastic
Length 17.8 cm (7 in.)
Weight 0.54 kg (1.2 lb)


Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.


Product Compatible Note
CR1000 (retired)
CR800 (retired)
CR850 (retired)

Additional Compatibility Information


The 43347 is typically housed in a 43502 Aspirated Radiation Shield to provide delta-temperature measurements for air quality applications. Delta temperature measurements use two 43502s attached at different heights.

The 41003-5 naturally aspirated radiation shield can serve as an alternative to the 43502 if a fan-driven aspiration shield is not required. The 27251 split nut plug must be used.

Both the 43502 and 41003-5 can be attached to either a mast or crossarm.

Data Logger Considerations

The 43347 comes in two versions—the "IX" version and the "VX" version. The "IX" version connects to a current excitation channel; only the CR3000 and CR5000 are compatible with the -IX.

The "VX" version connects directly to voltage excitation channels. All compatible data loggers can use the VX version.

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