TempVue™10andTempVue™20

comply withWMOSuggested temperature sensor

Whether you are observing climate change, assessing floods, or monitoring glacier retreat, temperature data plays a central role. Temperature directly affects various atmospheric and environmental conditions, including humidity, air pressure, and wind patterns. Accurate temperature measurement is not only crucial for real-time decision-making, but also for long-term climate monitoring and scientific researchequally important.

The United Nations World Meteorological Organization has developed relevant recommendations for various environmental and climate sensors, including temperature sensors.obtainaccurateobtainData is the foundation of numerous measurement systems, decision-making, and policy-making processes. With the continuous global climate change, the development of climate science relies on high-quality data——Standardized, traceable, reliable, and accurate data.

But the problem is that the different temperature sensors currently used globally can lead to inconsistent data, which has triggered concerns about the dataofDoubts about accuracy, reliability, and comparability. We explore the temperature guidelines of the World Meteorological Organization (WMO), focusing on mature solutions that meet or exceed WMO recommendations, in order to improve the standards of global temperature sensors.

The WMO standards (see World Meteorological Organization Publication No. 8) are important for the following reasons:

1. Accuracy and Traceability - Sensors that comply with WMO guidelines strictly follow the recommendations for accuracy, stability, and calibration traceability. This further reduces the uncertainty of the measurement, especially under harsh conditions.
2. Global data comparability - WMO standards ensure comparability and consistency of measurement data collected globally. Without standardized methods and sensor specifications, temperature data from different sites may be inconsistent, making it difficult to assess regional or global trends.
3. Quality control of climate and meteorological records - Long term climate datasets (often used to understand climate, validate models, or support policy-making) rely on high-quality, standardized observational data. Following WMOstandardHelps ensure the integrity and reliability of these data.
4. Design for actual environments - WMO standards take into account practical deployment factors to ensure durability in actual environments, not just applicable to laboratory conditions.

What are the technical recommendations for sensors that comply with WMO standards?

To comply with WMO standards, temperature sensors must meet the specific standards outlined in Chapter 2 of World Meteorological Organization Publication No. 8.

TempVue series temperature sensor

For a long time, there have been few options for temperature sensors that are cost-effective, commercially available, and meet or exceed WMO recommendations. Campbell Scientific has launched the TempVue series of independent sensors - two advanced temperature sensors that both comply with WMO standards, TempVue ™ 10 and TempVue ™ 20. Provide users with more choices.

The TempVue series temperature sensors have been fully calibrated and delivered, with calibration certificates traceable to national standards. This includes reducing the thermal conductivity of the sensor body, isolating the platinum resistance thermometer (PRT) probe, and using light colored cables to reduce radiation errors.

TempVue 10 has a measurement uncertainty of ± 0.1 ° C within the range of -80 ° C to+60 ° C

TempVue 20 has a measurement uncertainty of ± 0.1 ° C within the range of -40 ° C to+40 ° C

TempVue 10 and TempVue 20 Time constants in air: 20 seconds

The sensors currently used worldwide vary greatly in terms of time constants. WMO recommends a time constant of 20 seconds or less. The shorter the time constant, the faster the sensor responds to atmospheric changes, thereby improving performance and data quality. However, few temperature sensors on the market can meet this requirement. According to a peer-reviewed study on the improvement and impact of the time constant of newly released temperature sensors, the TempVue series temperature sensors are currently available on the market and can reach the temperature recommended by WMOOne of the sensors.