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MS-60S Smart Albedometer


Make:  Eko    Model:  MS-60S
✅ The MS-60S, as part of the S-Series family of sensors, also includes internal diagnostic sensors for remote visibility.
✅ Measurand : albedo and total reflectance.
✅ Sensor Type : Thermophile (ISO 9060:2018).
✅ Signal Output : MODBUS 485 RTU, SDI-12, 4-20mA, configurable 0-10mA / 0-1V*.
✅ Supplied With : 10m (Optional lengths 20m, 30m, 50m)

This Smart Albedometer has internal temperature, humidity and tilt sensors for remote diagnostics. These additional internal sensors will help the user to monitor the stability of the irradiance sensors as well as to ensure its proper installation and maintenance practices.

MS-60S Albedometers are used in solar power plants with bi-facial PV modules and in meteorological applications.

The MS-60S is an ISO 9060:2018 Class B with smart sensor technology and onboard diagnostic functions now standard for all EKO smart sensors. It preserves the high accuracy of the sensor while complying with the various output standards used in the industry. The new Smart signal transducer which allows selecting from 4 types of output in one unit (MODBUS 485 RTUSDI-124-20mA, configurable 0-10mA / 0-1V with external optional 100Ω precision shunt resistor). The new electronics ensure a great benefit for system integrators who work with various industrial interface standards.

The new double dome constructions provides lower offsets and cosine errors. The MS-60S can be used with the optional MV-01 ventilator / heater.

The MS-60S pyranometers are manufactured in a consistent way followed by strict quality inspection and performance evaluation. EKO provides a unique calibration compliant to the international standards defined by ISO/IEC17025/9847. The sensor has a 5 year warranty with a 2 year re-calibration interval recommended and it is no longer necessary to change the desiccant.


Eko (Japan)



ISO 9060:2018

Class B

ISO 9060:1990

(First Class)

Sub-category "Spectrally flat"


Sub-category "Fast response"

Non Compliant


(MODBUS 485 RTU, SDI-12, 4-20mA, configurable 0-10mA / 0-1V with external optional 100Ω precision shunt resistor)

Response time 95%

< 18 Sec.

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

± 5W/m²

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

± 2W/m²

Zero offset C - Total Zero off-set

± 7W/m²

Non-stability (change/year)

< 1.5%

Non-linearity (100 to 1000W/m²)

± 1%

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

± 18W/m²

Spectral Error

± 0.2% (Spectral selectivity ± 3%)

Temperature Response (-20°C to 50°C)

± 2%

Tilt Response (0-90° | 1000W/m²)

± 1%

Additional Signal Processing Error

< 1W/m²

Wavelength Range (nm)

285 to 3000 (50% points)

Irradiance range (W/m²)

0 to 2000

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

Standard Cable Length

10m (Optional lengths 20m, 30m, 50m)