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The S-Series MS-40S (MTI.AWS.EK.AB.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 internal diagnostic sensors for remote visibility over internal temperature, humidity, tilt and roll angle, ensuring optimum performance with reduced maintenance costs. EKO’s 4-channel smart interface ensures that the MS-40S is compatible with 99% of data loggers, DAQ, and SCADA systems and 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.

The MS-40S Albedometer consists of two MS-40S Pyranometers and the MS-Albedo Kit with a glare screen to measure albedo and total reflectance across various applications, including solar power plants with bi-facial PV modules. MS-40S Pyranometers are manufactured with strict quality controls and performance evaluation. EKO provides calibration compliant with the international standards defined by ISO/IEC17025/9847 with a 2-year recommended re-calibration interval.

MS-40S Albedometers

SKU: MTI.AWS.EK.AB.40S
  • • 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 - Complete 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 (Spectral selectivity ± 3%): ± 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 - 2000 W/m²

    • Signal Output: MODBUS 485 RTU, SDI-12, 4-20mA, configurable 0-10mA / 0-1V*

    • Sensor Diagnostic: Relative Humidity ± 2% Temp. ± 0.1% / Tilt Angle ± 1°

    • Operating temperature: -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)

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