43347 RTD Temperature Probe
Very High Accuracy
Good for air-quality applications
weather applications supported water applications supported energy applications supported gas flux & 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
Temperature 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
CR200X (retired)
CR216X (retired)
CR5000 (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.