STR-21G-S2
- With Harmonic Drive®
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
STR-21G-S2
- With Harmonic Drive®
The most 'high-end' sensor system for solar energy research, the STR-21G-S2 is designed for high-precision solar radiation measurement, offering reliability and value with unbeatable DNI, GHI, and DHI accuracy.
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
Overview
The STR-21G-S2 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-S2 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-80S pyranometer and Class A MS-57 Pyrheliometer. Altogether, the STR-21G-S2 is the most "high-end" sensor system for solar energy research.
The STR-21G-S2 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-80S can be paired with the optional MV-01 ventilator & heater, while the MS-57 Pyrheliometer features a heated front window, protecting both sensors from condensation and ice for continuous accuracy, whatever the weather.
STR-21G Specifications
| Description | |||
|---|---|---|---|
STR-21G Sun TrackerWith integrated GPS, sun position sensor, and a Harmonic Geared type stepper motor, 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 oriented or levelled correctly, 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. |
|||
| Attribute | View Product | ||
| Arms | 1 | ||
| Pointing accuracy Solar elevation: 0 to 87° | < 0.01° | ||
| Angle resolution | 0.009° | ||
| Rotation angle Zenith | -15 to 95° | ||
| Rotation angle Azimuth | 0 to 360° | ||
| Torque | 12 N⋅m | ||
| Payload side arms | 7kg | ||
| Sun sensor FOV | 30° | ||
| Ingress protection | IP 65 | ||
| Operating temperature range | -40 to 50°C | ||
| Communication | RS-422 / 232C | ||
| Power consumption | < 20W | ||
| Motor | Stepper motor | ||
| Driving technology | Harmonic Drive® | ||
| Tracking modes | Automatic & Manual | ||
| Tripod | Table tripod | ||
| Pyrheliometer mount | Adjustable / One sensor position | ||
| Cable length | 10m | ||
| Weight | 14.5 kg (with tripod) | ||
MS-80S Specifications
| Description | |||
|---|---|---|---|
MS-80S PyranometerBased on a revolutionary design, the MS-80S Pyranometer is best-in-class for accuracy, speed, reliability and is one of the only top tier 'fast-response' and 'spectrally flat' Class A pyranometers with unprecedented low zero-offset behaviour available. Featuring a state-of-the-art thermopile detector and Quartz diffusor technology, new internal diagnostics, a unique 4-channel interface, and Level A EMI/EMC electronic surge filter protection, the MS-80S is IEC 61724-1 compliant and the standout choice for every application. |
|||
| Attribute | View Product | ||
| ISO Specifications | |||
| ISO 9060:2018 | Class A | ||
| Response time 95% | < 0.5 Sec | ||
| Zero offset A - Thermal Radiation (200W/m²) | ± 1W/m² | ||
| Zero offset B - Temperature change (5K/hr) | ± 1W/m² | ||
| Zero offset C - Total zero off-set | ± 2W/m² | ||
| Non-stability (change/year) | < 0.5% / 5 years | ||
| Non-linearity (100 to 1000W/m²) | ± 0.2% | ||
| Directional Response (at 1000W/m² | 0 to 80°) | ± 10W/m² | ||
| Spectral Error | ± 0.2% | ||
| Temperature Response (-20°C to 50°C) | ± 0.5% | ||
| Tilt Response (0-90° | 1000W/m²) | ± 0.2% | ||
| Additional Signal Processing Error | < 1W/m² | ||
| Technical Features | |||
| Wavelength Range (nm) | 285 to 3000 | ||
| Irradiance range (W/m²) | 0 to 4000 | ||
| Signal Output | Modbus 485 RTU / SDI-12 4-20mA / 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 | < 0.2W | ||
| Ingress Protection | IP 67 | ||
| Calibration traceability / uncertainty | ISO 17025 / WRR / < 0.7% (k = 1.96) | ||
| Standard Cable Length | 10m (Optional lengths 20m, 30m, 50m) | ||
MS-57 Specifications
| Description | |||
|---|---|---|---|
MS-57 PyrheliometerThe MS-57 Class A Pyrheliometer is a fast, accurate, stable, and exceptionally reliable direct normal incidence (DNI) solar irradiance sensor. 'Fast-response' and 'spectrally flat' under ISO 9060:2018 specifications, each MS-57 is calibrated outdoors and tested against reference sensors fully traceable to the World Radiometric Reference. With an integrated low power window heater to prevent dew deposition or frost on the outside window, and competition-beating long-term stability, the MS-57 is truly 'all-weather' and perfectly suited to a range of applications. |
|||
| Attribute | |||
| ISO Specifications | |||
| ISO 9060:2018 | Class A | ||
| Response time 95% | < 0.2 Sec | ||
| Zero offset A - Thermal Radiation (200W/m²) | 0 W/m² | ||
| Zero offset B - Temperature change (5K/hr) | ± 1W/m² | ||
| Zero offset C - Total zero off-set | ± 1W/m² | ||
| Non-stability (change/year) | < 0.5% / 5 years | ||
| Non-linearity (at 1000W/m²) | ± 0.2% | ||
| Spectral Error | ± 0.2% | ||
| Temperature Response (-20°C to 50°C) | ± 0.5% | ||
| Tilt Response (0-90° | 1000W/m²) | ± 0.2% | ||
| Technical Features | |||
| Wavelength Range (nm) | 200 to 4000 (50% points) | ||
| Irradiance range (W/m²) | 0 to 4000 | ||
| Sensitivity (μV/W/m²) | Approx. 7 | ||
| Signal Output | Analog | ||
| Impedance (Ω) | < 15000 | ||
| Operating temperature | -40 to 80°C | ||
| Ingress Protection | IP 67 | ||
| Standard Cable Length | 10m (Optional lengths 20m, 30m, 50m) | ||
| Window Heater Power Requirement | DC 12V / 0.5W | ||
| Temperature Sensors | PT-100 Class A, Thermistor 44031 10kΩ | ||
Frequently paired together
Add all to list
Related Products & Accessories
-
Add to listSTR-21G-S0
With Harmonic Drive®
A turnkey solar monitoring station designed for high-precision solar radiation measurement, deliveri…
-
Add to listSTR-21G-S1
With Harmonic Drive®
High-precision solar radiation measurement with industry-leading accuracy, reliability and value for…
-
Add to listMS-90 Plus+
A New Angle on Accuracy
The MS-90 Plus+ combines the build quality and accuracy of different EKO sensors into one compact an…
-
Add to listASI-16 All Sky Imager
Automatic All Sky Camera
The ASI-16 All Sky Imager is an all-weather automatic 'All Sky' camera. With an integrated ventilato…
-
Add to listMS-60S Pyranometer
ISO 9060:2018 Class B
The S-Series MS-60S pyranometer is designed for agricultural research, meteorological applications,…
-
Add to listMS-40S Pyranometer
ISO 9060:2018 Class C
A Class C leading S-Series pyranometer for system integrators, agrometeorological networks, and prof…
-
Add to listMV-01 Ventilator & Heater
Designed for IEC61724-1 Compliance
Ensure IEC 61724-1 compliance with the MV-01 Ventilator & Heater, compatible with all MS & S-Series…
-
Add to listSTR-22G Sun Tracker
Fully Automated Setup
From sunrise to sunset, the STR-22G's 2-axis double-arm guarantees accurate tracking and pointing of…
-
Add to listSTR-21G Sun Tracker
Harmonic Drive® technology
A single-arm, 2-axis sun tracker with an easy, fully automated setup procedure and low power consump…
-
Add to listSTR-32G Sun Tracker
High torque and load (60Nm/60Kg)
Built for tough environments and higher loads without compromising precision or performance. Fully a…
How it works
- Confirm your selection and click on the 'Request a quote' button.
- Fill in the form & hit send.
- Your list and your contact details will be sent to your local EKO office.
- Our team will get back to you as soon as possible with more information or to set up a call or meeting.
