The S-Series MS-40S ISO 9060:2018 Class C pyranometer is a cost-efficient part of the most accurate, reliable and robust family of pyranometers in the world, and the class-leading solution for system integrators, agrometeorological networks, and professional small-scale PV sites.
Built with the same unique S-Series features as the Class A MS-80S and Class B MS-60S, the MS-40S comes with EKO’s 4-channel smart interface for compatibility with 99% of data loggers, DAQ, and SCADA systems, plus internal diagnostic sensors for remote visibility over internal temperature, humidity, tilt and roll angle; ensuring optimum performance with reduced maintenance costs.
With Level A EMI/EMC electronic surge filter and protection, 5-year warranty, lifetime desiccant, and ISO 17025 accredited calibration, the MS-40S is the toughest, most reliable, and advanced Class C pyranometer available.
ISO 9060:2018: Class C
Response time 95%: < 18 Sec
Zero offset A - Thermal Radiation (200W/m²): ± 12W/m²
Zero offset B - Temperature change (5K/hr): ± 5W/m²
Zero offset C - Total zero off-set: ± 17W/m²
Non-stability (change/year): ± 1.5%
Non-linearity (100 to 1000W/m²): ± 1%
Directional Response (at 1000W/m² | 0 to 80°): ± 20W/m²
Spectral Error: ± 0.2%
Temperature Response (-20°C to 50°C): ± 3%
Tilt Response (0-90° | 1000W/m²): ± 1%
Additional Signal Processing error: ± 1.5W/m²
Technical Features
Wavelength Range (nm): 285 - 3000
Irradiance range (W/m²): 0 to 2000
Signal Output: Modbus 485 RTU / SDI-12 / 0-10mA / 0-1V
Sensor Diagnostic: Internal Humidity Status, Temp. ± 0.1%, Tilt Angle ± 1°
Zero offset C - Total zero off-set: -40 to 80 °C
Supply voltage: 5 to 30 VDC
Power Consumption: < 0.2 W
Ingress Protection: IP 67
Calibration traceability / uncertainty: ISO 17025 / WRR / < 0.7% (k = 1.96)
Standard Cable Length: 10m (Optional lengths 20m, 30m, 50m)
