EKO Instruments

The heavy-duty Sun Tracker STR-32G completes the extensive EKO Sun Tracker range and is capable of taking the highest load without compromising precision or performance. Similar to the STR-21G/22G, it features a fully automated set-up procedure through a GPS receiver, providing increased reliability and enhanced functionality. Even though the capacity load of the STR-32G is approximately four times more, the size hasn’t changed, making it perfectly suited to support all kinds of Global, Diffuse and Direct Radiation measurement sensors and spectroradiometers. Besides the standard EKO sensor mounts, various mounting options are available. The STR-32G Sun-Tracker guarantees accurate sun tracking and pointing of the attached solar sensors from sunrise to sunset. The 2-axis tracker automatically adjusts to the sun’s position by the sun sensor closed-loop control system, even if the tracker is not oriented or leveled correctly. Delivered as standard with a mounting flange, the TRP-100 tripod is an optional extra. The 24 VDC low power consumption tracker can be powered by a solar-powered battery system or DC power supply. A wide range AC power adapters can be supplied to connect to the grid. For over 20 years, clients who have deployed STR sun-trackers have enjoyed easy set-up, smooth operation, and reliable tracking. Key Features: High torque and load (60N⋅m/60kg) Power consumption less than 20W RS-232 serial interface for position control All-Weather Tracking with Integrated GPS Receiver & 4-Quadrant Sun Sensor Quick, Easy, Fully Automated Setup Easy Integration with any DAQ system Harmonic Drive® mechanical gear system, for maximum positioning accuracy Deployed in Antarctica, proven in extreme climates worldwide

With an integrated GPS receiver, 4-quadrant precision sun sensor, and Harmonic Drive® technology, the STR-21G Sun Tracker is built to deliver unparalleled precision, optimal positioning, and reliability, whatever the weather. Easy to set up, the STR-21G automatically adjusts to the sun’s position, even if the tracker is not perfectly oriented or levelled, and can support a range of Global, Diffuse and Direct Radiation measurement sensors for custom configurations. The single configurable arm of the STR-21G can mount the MS-57 Class A Pyrheliometer for DNI readings and the optional MD-81-10 shading disk assembly, shielding any top-mounted pyranometer for diffuse solar radiation measurements. For over 20 years, clients who have deployed STR sun-trackers have enjoyed easy set-up, smooth operation, and reliable tracking. Key Features: All-Weather Tracking with Integrated GPS Receiver & 4-Quadrant Sun Sensor Low Power Consumption Quick, Easy, Fully Automated Setup Easy Integration with any DAQ system Harmonic Drive® mechanical gear system, for maximum positioning accuracy Deployed in Antarctica, proven in extreme climates worldwide

Built with the same industry-leading features as the Class A MS-80S, the MS-60S comes with EKO’s unique 4-channel smart interface for compatibility with 99% of data loggers, DAQ, and SCADA systems. The MS-60S, as part of the S-Series family of sensors, also includes internal diagnostic sensors for remote visibility over internal temperature, humidity, tilt and roll angle; ensuring optimum performance with reduced maintenance costs. Spectrally flat and with a new double-dome construction for lower offsets and cosine errors, the MS-60S also includes a 5-year warranty and advanced surge protection for a Class B sensor that combines the latest technology with the highest standards of quality, accuracy, and reliability. The MS-60S Albedometer consists of two MS-60S 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-60S 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. Key Features: 5-year warranty & recommended 2-year recalibration interval Smart 4-channel Analogue & Digital Interface Level A EMI/EMC electronics surge filter & protection Internal Diagnostics for temperature, tilt, roll, and relative humidity

EKO MS-80SH albedometer for bifacial PV are based on a modular design, comprising two pyranometers combined using the EKO Instruments MS-Albedo Kit, with a glare screen. Compatible with all SH-Series pyranometers, the MS-Albedo Kit allows users to create custom configurations to suit their specific application. The MS-80SH Albedometer utilizes two Class A MS-80SH ‘fast-response’ and ‘spectrally flat’ patented technology Pyranometers with a 5-year warranty and competition-busting 5-year recalibration interval, each with our unique 2-channel analog and digital interface, providing a compatibility with 99% of data loggers and SCADA systems. Level A EMI/EMC electronic surge filtering, and a suite of internal temperature, humidity, tilt, and roll angle sensors help ensure optimal performance with reduced maintenance, contributing to greater efficiency, higher yield, and more rapid ROI. Designed for accuracy, built for reliability, and compliant with IEC 61724-1 requirements for Class A PV monitoring systems, the MS-80SH Albedometer is the best quality, and best value, albedometer available; delivering industry-leading accuracy in solar albedo and reflected solar radiation measurement. *Patent Number: E0126AOP0001 (Japan: Patent No. 7160429; Europe: EP3324159A; U.S.: US 11,821,786 B1; China: ZL 2022 8 0004577.2). Key Features: <1.4W Integrated High-Efficiency Dome Heating for dew & frost resistance ISO 9060:2018 Class A, Spectrally Flat & Fast Response <0.5s Super-Fast response for always accurate measurements <1W/m² Record Lowest Zero Offset A, and <0.5% Lowest Non-Stability over 5-Years Level A EMI/EMC Electronics Surge Filter & Protection Internal Diagnostics for temperature, tilt, roll, and relative humidity 5 Year Warranty & Recommended Recalibration Interval ISO 17025 accredited calibration

The STR-21G-SH0 is a turnkey sensor system designed to perform the most accurate solar radiation measurements of direct solar radiation. Compatible with almost all DAQ systems, with multiple analog and digital inputs, the STR-21G-SH0 is equipped with an internal sun-position sensor and GPS receiver for quick and easy set-up. Based on the STR-21G Sun Tracker, in combination with the Class A MS-57SH Pyrheliometer, the STR-21G-SH0 system can be freely configured to measure the required solar radiation components in the most accurate way. The MS-57SH has a heated front window to avoid condensation and ice, which can affect the measurements, ensuring uninterrupted accuracy, whatever the weather. Key Features: Integrated sun-position sensor and GPS for quick, easy and accurate setup Efficient, Cost-Saving, Low Power Consumption Easy Integration with any DAQ system Harmonic Drive® mechanical gear system, for maximum positioning accuracy Deployed in Antarctica, proven in extreme climates worldwide Resources Documentation Icon PDF Solar Monitoring Stations Product Sheet (1.53 MB) Icon PDF STR Series Manual (3.26 MB) 3D Files Icon 3D Model

The STR-21G-SH2 is designed to perform the most accurate solar radiation measurements of the three solar radiation components; Direct, Diffuse and Global. Easily integrated into any DAQ system with multiple analog or digital inputs, the STR-21G-SH2 features an in-built sun-position sensor and GPS receiver for quick and easy set-up. Based on the STR-21G Sun tracker with a new shading disk assembly which can be mounted on one arm of the tracker, the system also features the industry-leading Class A MS-80SH pyranometer and Class A MS-57SH Pyrheliometer. Altogether, the STR-21G-SH2 is the most “high-end” sensor system for solar energy research. The STR-21G-SH2 can also be freely configured to measure the required solar radiation components in the most accurate way, ensuring a cost-effective solution for every application. In harsh environments, the MS-80SH can be paired with the optional MV-01 ventilator & heater, while the MS-57SH Pyrheliometer features a heated front window, protecting both sensors from condensation and ice for continuous accuracy, whatever the weather. Key Features: Integrated sun-position sensor and GPS for quick, easy and accurate setup Efficient, Cost-Saving, Low Power Consumption Easy Integration with any DAQ system Harmonic Drive® mechanical gear system, for maximum positioning accuracy Deployed in Antarctica, proven in extreme climates worldwide

A precise Solar Monitoring Station to measure diffuse measurement, The MS-80SH Plus+ system features the top-tier EKO MS-80SH ISO 9060:2018 Class A Spectrally Flat & Fast Response Pyranometer, equipped with integrated dome heating. Combined with a Rotating Shadow Band (RSB) setup, it delivers precise Global, Diffuse, and Direct irradiance data. This system offers a cost-effective, low maintenance solution tailored for the expanding variety of solar power plant locations and Photovoltaic (PV) applications. The RSB-02 Rotating Shadow Band features a motorized rotating band that periodically shades and unshades the stationary MS-80SH pyranometer while operating in RSB mode. This design allows for the measurement of all three irradiance components with a single sensor. The system leverages the pyranometer’s fast response and spectrally flat thermopile technology to deliver accurate irradiance data, even under varying sky and spectral conditions. Additionally, using an ISO 9060 Class A pyranometer simplifies calibrations by enabling ISO 9847 standardized calibration procedures to reduce uncertainties and associated costs. Coupling the MS-80SH Plus+ with an additional pyranometer allows for the determination of further irradiance parameters, such as ground-reflected irradiance and albedo. For applications like monitoring bifacial PV systems and complying with the IEC 61724-1 Class A monitoring standard, where diffuse irradiance measurements require higher accuracy, the system offers an additional operation mode: the Tracking Shadow Band (TSB) mode. In TSB mode, the band actively tracks the sun to provide constant and precise diffuse irradiance measurements. The control unit C-Box includes GPS to accurately determine the sun’s position and adjust the RSB band accordingly. It features RS-485 Modbus RTU output, enabling seamless connection to various devices, such as dataloggers and SCADA systems, for delivering irradiance and sensor diagnostics data. To further complement this solution, EKO has developed Obi, a Windows software for sensor communication and data acquisition. A practical solution to the increasing diversity of solar power plant locations and Photovoltaic (PV) applications, the MS-80SH Plus+ can easily be deployed. This solution can provide a major benefit in terms of compliance with the updated IEC 61724-1 guidelines, as carrying out both GHI and DHI measurements is a criteria to fulfill the standard best practices when monitoring bifacial photovoltaic modules. Key Features: ISO 9060 Class A pyranometer, spectrally flat, fast response GHI, DHI and DNI measurements in one compact solution Cost-effective, no sun-tracker required Inbuilt GPS for quick, accurate setup Easy Modbus Integration with any DAQ system Low Power Consumption *Patent number: E0126AOP0001 (Japan: Patent No. 7160429; Europe: EP3324159A; U.S.: US 11,821,786 B1; China: ZL 2022 8 0004577.2).

Meet the robust, precision-engineered HF-01SG Soil and Ground Heat Flux Sensor. As the sister of the HF-01S, this sensor helps you carry out soil and ground heat flux measurements with ease and accuracy under real-world conditions. EKO brings over 50 years of heat flux sensor manufacturing experience to this design. We developed the HF-01SG to meet the demanding requirements of environmental research, geotechnical analysis, and surface energy balance studies. The rugged, sensitive, fast-response, weather-proof sensor allows you to measure soil and ground heat flux as precisely as possible. Its minimal form factor and thin body minimize the sensor’s disturbance on the actual heat flow. This design makes installation easy without disturbing the soil environment. The limited surface area also minimizes the chance of water blockage during soil irrigation. We manufacture every sensor carefully in Japan and pass it through critical quality tests to ensure it lasts.

The HF-30S heat flux sensor from EKO Instruments is an extra large-area heat flux sensor designed to measure average heat flux over broad surfaces with high reliability. With its 30 × 30 cm² sensing area, thin 0.5 mm profile, high sensitivity, and low thermal resistance, the HF-30S is ideal when point measurements are not enough and a representative average across a larger measurement area is needed. It can be installed on surfaces, between insulation layers, and in HFM Apparatus, making it a versatile choice for building physics, thermal conductivity testing, heat transfer studies, and other applications where accurate large-area heat flow measurement is essential. The key advantage of the HF-30S is its ability to help users find an average heat flux over a large surface, reducing the influence of local hot spots, uneven material behavior, and thermal bridges. This makes it especially valuable for evaluating insulation performance, comparing materials, and analyzing heat transfer under controlled conditions. With a high sensitivity of 100 µV/W/m², a response time of 28 seconds, and an operating temperature range of -20 to 120 °C, the HF-30S provides performance for laboratory, research, and engineering environments that require stable and representative surface, embedded, and multi-layered heat flux measurement. Key Features: High Sensitivity Thin body & Extra-Large area Low thermal resistance Short Response Time

The HF-01S Standard Plate Type Heat Flux Sensor has brought heat flux measurement applications to a new level. With a century of history and over 50 years of heat flux sensor manufacturing experience, EKO presents the HF-01S. This sensor represents a leap in thermal measurement precision. The standard, sensitive, fast-response, all-around sensor allows you to measure heat flux as accurately and precisely as possible. Thanks to its small size and thin body, the disturbance of the sensor on the actual heat flow is minimized — bringing you one step closer to the true values of heat flux. In addition to its measurement-related benefits, the tiny, lightweight body allows easy installation without the risk of falling off. The limited surface area also minimizes the chance of air gaps between the sensor and the measurement surface. Manufactured carefully in Japan and passing the most critical quality tests, this sensor is built to last.

The compact, industrial-grade ML-01 silicon pyranometer is made for high-quality irradiance measurements. ISO 9060:2018 Class C, fast response, light but tough, the ML-01 features a mono-silicon detector with a UV-resistant cone-shaped diffuser that helps to minimise soiling and water deposition, delivering an excellent cosine response, even at low solar elevation angles. The sensor can be mounted in the horizontal position for global horizontal measurement applications with a standard removable mounting plate with a spirit level and levelling feet. Made in Japan and manufactured to EKO’s strict quality standards, the ML-01 comes with an optional mounting plate, a 2-year warranty, 2-year recommended recalibration interval, and unique calibration, compliant with international standards, for a cost-effective alternative to larger thermopile-based sensors, easy to integrate into any project or application; solar, agricultural, automotive and more.

The MS-40 is an ISO 9060:2018 Class C pyranometer based on EKO’s universal sensor platform. It is the most cost-effective irradiance sensor to measure Solar irradiance across the entire solar spectrum and is designed for agro-meteorological networks and professional small scale PV sites. Featuring an analog (mV) output, every MS and S-Series Pyranometer, including the MS-40, is compatible with the optional MV-01 ventilator & heater and albedo mounting kit and is manufactured with strict quality controls and performance standards. EKO provides a unique calibration compliant with the international standards defined by ISO 17025 and IEC 9847. The sensor also has a 5-year warranty with a two year recommended recalibration interval and no requirement to change the desiccant.

Designed for agricultural research, meteorological applications and small to medium scale solar plants, the S-series MS-60S ISO 9060:2018 Class B Pyranometer is part of the most accurate, reliable and robust family of pyranometers in the world. Built with the same industry-leading features as the Class A MS-80S, the MS-60S comes with EKO’s unique 3-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. Spectrally flat and with a new double-dome construction for lower offsets and cosine errors, the MS-60S also includes a 5-year warranty and advanced surge protection for a Class B sensor that combines the latest technology with the highest standards of quality, accuracy, and reliability. Key Features: ISO 9060:2018 Class B Spectrally flat Analog output ISO 17025 certified calibration 5 year warranty Optional MV-01 Ventilator & Heater

Pyranometer with Integrated Dome Heating MS-80SH Pyranometer with Integrated Dome Heating from EKO Instruments sets a new standard for industrial and research solar irradiance measurements. It exceeds the specifications for ISO 9060 Class A pyranometers. Moreover, it offers the best value and performance in this high-accuracy instrument class. Launched as an upgrade to the MS-80 series, it offers unmatched accuracy, speed, and reliability. In addition, its smart interface and multiple signal outputs offer versatility and ease of use in all applications in solar energy monitoring, meteorological research, and photovoltaic (PV) systems. MS-80SH features 1.4W high-efficiency solid state dome heating that prevents dew and frost build-up on the dome. This ensures accurate data in all climate conditions.