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ML-02 Si-Albedometer

Make:  Eko                                       Model: ML-02
✅ Cost-efficient solution for high-quality irradiance and albedo measurements.
✅ Measurand: Solar Radiation (Incoming & Outgoing)
✅ Sensor Type: Mono-silicon detector
✅ Standards & Classifications: ISO 9060:2018 Class C
✅ Signal Output: Analog (mV)
✅ Supplied With: 5m Cable (Optional 10m, 30m, 50m), Calibration Certificate

ML-02 Si-Albedometer:

The compact, industrial-grade ML-02 si-albedometer is a cost-efficient solution for high-quality irradiance and albedo measurements. With ML-02 si-pyranometers enclosed within a special housing, a bubble level, and a 70-cm mounting rod, the ML-02 si-albedometer is easy to use, integrate, and install with any application. From PV plants with bifacial modules to hydrology weather stations, agriculture research, applications in industrial environments, and more, the ML-02 si-albedometer is effective anywhere a compact and efficient sensor is needed.

The small size, high accuracy, quality construction, and various mounting accessories available for the ML-02 have even seen them mounted on drones, built into the bodies of solar-powered vehicles, fixed to building exteriors, and more.

The ISO 9060:2018 Class C, fast response, light but tough ML-02 Pyranometer features a mono-silicon detector with a UV-resistant cone-shaped diffuser that helps minimize soiling and water deposition, delivering an excellent cosine response, even at low solar elevation angles.

Made in Japan and manufactured to EKO’s strict quality standards, the ML-02 comes with a 2-year warranty, a 2-year recommended recalibration interval, and unique calibration compliant with international standards for a cost-effective alternative to larger thermopile-based sensors.

The ML-02 albedometer detector has a high analog output and can be combined with our industrial interfaces MC-11, MC-20, A-box, and M-box to convert the signal to 4-20mA or Modbus 485 RTUS. A two-channel data logger L-Box can also be used to log the data from the Albedometer.

Application and features of ML-02 Si-Albedometer:



✅ PV plants
✅ Hydrology weather stations
✅ Agriculture research
✅ Most compact industrial sensor
✅ ISO 9060:2018 Class C, fast response
✅ Low temperature dependency
✅ Fast response photodiode
✅ Compact housing and mounting rod
✅ Cost-efficient solution
✅ 2-year warranty
✅ 2-year recommended recalibration interval

Eko (Japan)


ML-02 Si-Albedometer

ISO 9060:2018

Class C

ISO 9060:1990

Not Compliant

Sub-category "Spectrally flat"

Not Compliant

Sub-category "Fast response"



Analog (mV)

Response time 95%

< 1 ms

Zero offset A - Thermal Radiation (200W/m²)

0 W/m²

Zero offset B - Temperature change (5K/hr)

0 W/m²

Zero offset C - Total zero off-set

0 W/m²

Non-stability (change/year)

+/- 2 %

Non-linearity (100 to 1000W/m²)

+/- 0.2 %

Directional Response (at 1000W/m² | 0 to 80°)

± 10 W/m²

Spectral error

±3.07 %

Temperature Response (-20°C to 50°C)

± 0.15 %

Tilt Response (0-90° | 1000W/m²)

± 0 %

Wavelength Range (nm)

400 to 1100 (50% points)

Irradiance range (W/m²)

0 to 2000

Operating temperature

-30 to +70 °C

Ingress Protection

Equivalent to IP67 (IEC60529, JIS C0920)

Standard Cable Length

5 m

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