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Overview
The Sunmeter Pro Bifacial Irradiance Sensor represents a significant leap forward in solar energy measurement technology. This advanced albedometer combines two high-performance digital photovoltaic pyranometers in a single, compact unit. Designed specifically for the growing market of bifacial photovoltaic systems, this sensor provides unparalleled accuracy in measuring both incoming and reflected solar radiation.
Innovative Design
At its core, the Sunmeter Pro Bifacial consists of two Sunmeter Pro photovoltaic pyranometers arranged in opposition. The upward-facing sensor captures incoming global solar radiation, while the downward-facing sensor measures reflected radiation. This dual-sensor configuration allows for precise calculation of solar albedo – a critical factor in assessing the performance of bifacial PV modules.
Note: This bifacial irradiance sensor helps in measuring the performance of the bifacial PV module’s as well as helps in the calculation of the Solar albedo. Solar albedo which is the ratio of the reflected radiation to the global radiation. It mainly depends on the properties of the surface and the directional distribution of the incoming solar radiation.
Solar albedo = reflected radiation/global radiation
Bifacial PV module has a glass panel at the back, while a normal PV module has an opaque metal back. Therefore Bifacial PV module can collect radiation and generate electricity from both front and back of the PV module.With the surging applications of bifacial modules, This kind of albedometers are very essential for the to calculate performance of bifacial PV modules with more accuracy. Measuring performance of Bifacial PV module gain Bifacial solar cells enable the absorption of light also by the rear side of the cell. Hence increasing energy yield of a bifacial module, Yield bifacial (Ybifi) compared to the energy yield of a monofacial module, Yield monofacial (Ymono) installed under the same conditions is given below:
Bifacial gain = (Ybifi -Ymono) / Ymono
In order to measure the albedo (reflecting radiation) of a surface, the instrument used is called albedometer. Most common application of this is to measure earth’s surface reflection.On the contrary for PV sector, photovoltaic pyranometers are most recommended to use. In the case of meteorological studies thermopile pyranometers are more suitable.
Advanced Technology
Each sensor incorporates a monocrystalline silicon cell, laminated with high-quality glass and E.V.A., mimicking the construction of a miniature PV module. This design ensures that the sensor’s response closely matches that of actual solar panels, providing more relevant data than traditional thermopile pyranometers. The inclusion of TZOS® technology further enhances measurement accuracy.
Unmatched Precision
The Sunmeter Pro Bifacial boasts exceptional accuracy, with a measurement tolerance of less than ±2% for irradiance and ±0.5°C for temperature. To maintain this high level of precision, each unit undergoes rigorous calibration against a PV reference cell at the DAKKS-accredited ISFH institute. Furthermore, the product includes a free recalibration service after one year of use, demonstrating the manufacturer’s commitment to long-term accuracy.
Output Options
The digital interface utilizes the RS485 standard with Modbus RTU protocol, ensuring reliable signal transmission over distances up to 500 meters.
Durability and Longevity
Engineered for longevity, the Sunmeter Pro Bifacial undergoes additional stabilization processes to minimize measurement drift over time. The sensor demonstrates a performance decline of less than 1.5% per year, ensuring consistent and reliable data over extended periods. Its robust construction meets IEC EN 61215 standards for product aging, guaranteeing resilience in harsh outdoor environments.
Easy Integration
Designed with user-friendliness in mind, the Sunmeter Pro Bifacial is compatible with most data loggers and monitoring systems. Its plug-and-play nature, combined with included mounting brackets, facilitates quick and easy installation in both new and existing solar installations.
Comprehensive After-Sales Support
Demonstrating our confidence in the Sunmeter Pro’s performance and our commitment to customer satisfaction, we offer an unparalleled support package. This includes a complimentary recalibration service after one year of use, as well as the immediate replacement of the sensor if its tolerance exceeds 3.5%. This guarantee provides peace of mind and ensures the continued accuracy of your measurements.
Accessories
- Temmeter
- Pulse Anemometer
- ENV METER
- ENV PRO
- ENV4
- USB/RS485 interface cable
- USB/MICRO-USB smartphone adapter
- Sm configuration for Android smartphone and tablet SMCONFIG allows you to configure Sunmeter in the field from your Android smartphone. It is no longer necessary to bring the Sunmeter back to the laboratory for configuration.The software allows you to:
- configure Sunmeter.
- make a diagnosis of the basic functions.
- log irradiance, temperature and wind (Sunmeter Wind only) readings.
The software is available for free on this page in the downloads area. In addition to the software it is necessary to have a USB / RS485 converter, an adapter cable between microUSB/USB and a female connector M12 4 pin for Sunmeter.
In the Download area you can find a wiring diagram of our cable that connects Smartphone/Tablet or PC with the irradiance sensor, it takes and transforms the voltage present on the USB (Price on request). Alternatively, it is possible to use other cables with external power supply (9V battery).
Specifications
- Product Name: SunMeter PRO bifacial irradiance sensor
- Sensor Type: Solar irradiance sensor with monocrystalline silicon cell (photovoltaic pyranometer)
- Compliance Standards:
- IEC 60904-2
- IEC 60904-4
- IEC 60904-10
- IEC 61724-1; 2021
- Calibration Method: Dual adjustment comparison with Dakks accredited ISFH Institute PV reference cell
- Measurement Ranges:
- Irradiance: 0 to 1500 W/m² (IEC EN 61724-1 compliant)
- Spectral Range: 0.3 μm to 1.1 μm
- Temperature: -30°C to +90°C
- Output Specifications:
- Digital: RS485 standard Modbus RTU
- Measurement Precision:
- Irradiance: ≤ ±2%
- Temperature: ≤ ±0.5°C
- Power Supply: 9-30 Vdc with reverse polarity and short circuit protection
- Construction:
- Sensor Encapsulation: Laminated glass with UV-resistant E.V.A. (IEC 60904-2 compliant)
- Casing: Aluminum with screw-clamp mounting mechanism
- Cabling: 50cm UV-resistant cable
- Connector Type: Standard M12 8-pin male IP67
- Dimensions: 114x70x22mm (excluding mounting clamp)
Compatibility
Our devices are engineered with high precision and reliability, designed to seamlessly integrate with a wide range of photovoltaic systems and installations. We recommend consulting the compatibility table to ensure that your chosen sensor is fully compatible with your specific configuration.
Indephts
Accessories
Analog Temperature Sensor for Photovoltaics – Temmeter
IEC 60751 Class A compliant, response time < 5 seconds
Fast-response, adhesive PV temperature sensor
Possible combinations
This table outlines the various configurations and their corresponding applications, helping you quickly identify the best solution for your system.
Downloads
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