WISG traceable calibration
Research-grade, accurate, and robust, the MS-21 measures longwave downwelling radiation and longwave net radiation in a wide spectral band and delivers superior stability independent of the sensors’ operating temperature.
Designed to raise the bar, the MS-21 Pyrgeometer is research-grade, accurate, robust and delivers superior stability independent of the sensors’ operating temperature. Based on a new design concept and built for consistency, the MS-21 minimises temperature differences and suppresses window heating errors.
Whatever the conditions, the MS-21 measures longwave downwelling radiation and longwave net radiation in a wide spectral band without needing a sun tracker with a shading device or shadow ring. It features a silicon meniscus dome with solar blind interference filter and hard carbon coating, a new thermal coupling design, onboard temperature compensating electronics, and a unique aluminium alloy sun shield.
With a 5-year Warranty, World Infrared Standard Group (WISG) traceable calibration, and PT-100/4W IEC60751 Class A Industrial platinum resistance thermometers and temperature sensors; the MS-21 achieves the highest standards for quality, accuracy, and reliability.
- New thermal coupling design, outstanding low thermal resistant
- WISG traceable calibration
- 4.5μm - 42μm flat spectral response
- Low temperature dependency, excellent stability
- Design & built for extra-low window heating
- 5-year warranty & EKO quality guarantee
| 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 |
