RS41-SG

Upper Air Radiosondes RS41 and RS41 E-models

6 reasons Vaisala Radiosonde RS41 is the gold standard in upper-air observations

Most accurate
Exceptional temperature, humidity and wind measurements even in the most challenging conditions.
RS41 E-models
Feature 66% less plastics, same world-class performance with biodegradable mechanical parts.
Trustworthy in clouds
Accurate temperature and humidity measurements even when emerging from dense clouds.
100% consistent BUFR messages
Vaisala manual and automatic sounding systems provide high-resolution BUFR messages that maximize the value of data.
Ease of use
Convenient automated ground check with reliable and intuitive software.
#1 in GRUAN
The most widely used as the GRUAN reference grade radiosonde.

Seamless integration with existing systems
Unlock multi-GNSS support & message authentication with the Vaisala Cirrus Sounding System MW51
Protection against cyberthreats
Industry-first message authentication ensures radiosonde messages remain unaltered during transit
Resilience against interference
60% improved data availability* with multi-GNSS support * Based on Vaisala test soundings in Finland during 2024 comparing the radiosonde RS41 models with and without multi-GNSS.

66% less plastic
Using biodegradable and plastic-free Vaisala BioTwine™ and Vaisala BioCover™
Biodegradable mechanical parts
Including cover, insulation, fasteners and string pin
Same world-class data
Performance is equal to the standard Vaisala Radiosonde RS41

DatasheetVaisala Radiosonde RS41-SG offers excellent data availability and accuracy of humidity, temperature, pressure, and wind measurement. The radiosonde is fast and stable with individual, SI-standard traceable calibration.
User guideThis document provides information for operating Vaisala Radiosonde RS41-SG and RS41-SGP.

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