The MS-21 Pyrgeometer is a research-grade instrument designed for highly accurate measurement of atmospheric longwave radiation. Featuring an advanced thermal coupling design, it minimizes window heating effects and temperature dependency, delivering exceptional stability and precision across a 4.5–42 μm spectral range. With WISG-traceable calibration, rugged construction, and a 5-year warranty, the MS-21 is ideal for long-term meteorological, climatological, and scientific research applications.
Specifications
| Wavelength Range | 4.5 to 42μm |
|---|---|
| Sensitivity | 10 to 20uV/W/m² |
| Response time | < 18 Sec (@95%) |
| Window heating offset | < 4 W/m² |
| Zero offset B | < 1 W/m² |
| Temperature response | < 1 % (-20 to 50°) |
| Non-linearity | < 1 % |
| Operating temperature range | -40 to 80° |
| Net radiation measurement range | -250 to 250 W/m² |
| Field of view | 180 degrees |
| Detector temperature sensor | Pt-100, 4 wires |
| Impedance (approx.) | 100 to 200Ω |
Environmental Monitoring
Climatological Monitoring
Solar Assessment
Hydrological Studies
Automatic Tracking Solar Radiation Measurement System (BS200-08)
The BS200-08 Automatic Tracking Solar Radiation Measurement System is a high-performance solution for unattended solar radiation monitoring. This advanced……
Class A Pyranometer (MS-80)
The MS-80, manufactured by EKO Instruments, is a next-generation ISO 9060 Class A spectrally flat, fast-response pyranometer designed for high-accuracy……
Class B Digital Pyranometer (MS-60S)
The MS-60S Pyranometer is a high-performance ISO 9060:2018 Class B solar radiation sensor designed for precise and reliable solar monitoring in agricultural……
Class B Pyranometer (MS-60)
The MS-60 Pyranometer is a high-performance ISO 9060:2018 Class B pyranometer designed for precise measurement of global solar radiation. Featuring an analog output……
Class C Digital Pyranometer (MS-40S)
As part of EKO’s advanced S-Series pyranometer family, the MS-40S delivers dependable solar irradiance measurements while maintaining the same……
The SP-522-SS Modbus Digital Output Thermopile Pyranometer is a high-performance solar radiation sensor designed for accurate and reliable……
Class C Thermopile Pyranometer (SP-510-SS)
The SP-510-SS Thermopile Pyranometer is a high-precision solar radiation sensor designed for reliable shortwave radiation measurement in environmental, agricultural……
Class C Pyranometer (BS200-03)
The BS200-03 Pyranometer is designed based on the thermopile principle, utilizing electroplated, multi-contact thermopiles as its sensing element. Its surface……
4-Component Net Radiometer (CNR4)
The Kipp & Zonen CNR4 is a precision net radiometer designed for accurate measurement of the energy balance between incoming and outgoing solar and terrestrial radiation……
Net Radiometer (SN500SS)
The SN500SS Four-Component Net Radiometer by Apogee Instruments measures upward and downward shortwave and longwave radiation individually for accurate……
Solar Radiation Sensor (BS200-04)
The BS200-04 Solar Radiation Sensor is based on the silicon photovoltaic cell principle and is designed to measure solar radiation in the 300–3000 nm wave……