Product Description
Pyrgeometers are sensors that measure the net longwave radiation difference between the detector surface and surface the detector is directed towards (typically, atmosphere or ground surface). Longwave radiation emitted by the surface of interest can be calculated with the additional measurement of detector temperature, typically accomplished via an internal thermistor or PRT.Reliable Longwave Radiation MeasurementThe SL-500 and SL-600 pyrgeometers provide consistent and precise monitoring of longwave radiation thanks to their high-quality thermopile detectors and rigorous factory calibration. These instruments operate efficiently over a wide temperature range and deliver accurate outputs without the need for external power.
Built for Harsh EnvironmentsDesigned with IP65-rated anodized aluminum housing and a silicon dome window, these pyrgeometers withstand challenging outdoor conditions. Their rugged build, combined with ease of installation, makes them suitable for long-term environmental and meteorological deployments.
FAQ's of PYRGEOMETERS (SL-500-600):
Q: How do PYRGEOMETERS (SL-500-600) measure longwave radiation?
A: The SL-500 and SL-600 pyrgeometers use a thermopile detector with a black coated surface to measure incoming longwave radiation. The sensor generates a millivolt output proportional to the radiation it receives within its specific wavelength range (4.5-50 m for SL-500, 4.5-42 m for SL-600).
Q: What are the primary applications for the SL-500 and SL-600 pyrgeometers?
A: These pyrgeometers are primarily used in environmental monitoring, meteorology, and climate studies where accurate longwave radiation measurements are required. They are suitable for outdoor installations due to their wide operational temperature range and robust, weather-resistant design.
Q: When should calibration be checked or performed on these pyrgeometers?
A: Calibration is traceable to international standards (WRR/WIS), and with a non-stability of less than 1% per year, the devices maintain accuracy over extended periods. However, recalibration is generally recommended according to project requirements or after several years of operation to ensure continued precision.
Q: Where can I purchase SL-500 or SL-600 pyrgeometers in the United States?
A: These pyrgeometers are available from various manufacturers, retailers, suppliers, and wholesalers across the United States. Product support and customization options, such as cable length, are typically provided by authorized distributors.
Q: What benefits does the IP65 rating provide for outdoor use?
A: An IP65 rating ensures that the device is dust-tight and protected against water jets from any direction. This makes the pyrgeometers ideal for outdoor deployment, as they can operate reliably in harsh weather conditions without risk of damage to internal components.
Q: How are the pyrgeometers typically mounted during installation?
A: The instruments feature a level mounting base with a bubble level, which allows for simple and precise installation on a suitable surface. Proper mounting is crucial to ensure the 180 field of view for accurate environmental readings.