Seven Humidity Sensor

SEVEN manufactures weather station sensors required for Solar Power Plants compatible with Huawei, Goodwe, SMA, SolarEdge, Blue'Log, Sungrow, Growatt, ABB/Fimer, EnCombi, Solarify, Elum Energy, General Electric, Kehua Tech, SolaX Power, Solplanet, Solis, VTC Energy data loggers. The weather station includes sensors required for monitoring solar power plants using the Goodwe monitoring system Promate.

Irradiance Sensor With Modbus RTU Output It's a Sensor Box for Solar PV Plants having a Modbus RTU Output. Besides Irradiance Sensor, it includes also an Internal Cell Temperature Sensor.It is compatible with all Modbus RTU Dataloggers. It is supplied along with Mounting Bracket and Cable. Solar irradiance is the power per unit area received from the sun and measured by the PV pyranometer, i.e. the irradiance sensor, as electromagnetic radiation in Watt per square meter (W/m²). WORKING PRINCIPLES This sensor consists of a solar cell made of monocrystalline silicon, which is activated by light and produces an electric current that is converted into millivolts (mV) thanks to the connected shunt resistor on its back side. A temperature sensor is located at the back of the cell to measure the temperature of the cell which causes a small deflection of the current. The temperature increases in inverse proportion to the current production of the cell. The monocrystalline cell and the temperature sensor are connected to an electronic card, which is designed to calculate the temperature compensated solar irradiance value in W/m². Thanks to the design of this card, it is possible to connect up to 7 different sensors and provides an RS485 port for data transfer in Modbus RTU protocol. SEVEN provides SunSpec compliance for the necessary devices, too. CONSTRUCTION FEATURES Monocrystalline Cell: The cell is laminated with 2 EVA sheets, one Tedlar sheet and 3mm tempered glass under 180 °C homogeneous temperature and under vacuum effect. The size of the monocrystalline cell is 52×52 mm² or 31x31mm². Sensor Box: It is an UV protected aluminum box. The sensor box has two opening access and the mounting holes on its sides are for easy site installation. There are three options for IP Class; IP54, IP65 and IP68. For ventilation purpose, there are 1mm holes at bottom side of the box, or a ventilation plug on its side. Connectors: Each plastic connector which is UV protected has a different pin number which prevents any connection confusion during site installation. The connection cables are delivered as 1,5m or 3m lengths. SEVEN irradiance sensor is designed as plug & run device and end user friendly operation. Details of SEVEN Irradiance sensor The irradiance sensor or PV pyranometer is a photovoltaic sensor used to measure the amount of solar energy in natural light and is particularly used in meteorology. It measures the power of total solar radiation in watts per square meter (W/m²). The solar irradiance sensor is a simple economical solution to monitor the performance of the solar system at any time. Entirely manufactured as a cell for the PV system and equipped with a temperature compensation system, the irradiance sensor measures precisely and reliably the energy expected to be produced by the system. You will thus be able to benefit from the best performance for your solar panels.

Irradiance Sensor With 4-20mA Output This Irradiance Sensor is used to measure the radiation flux density of Solar PV Plants having an 4-20mA Input Datalogger. Besides Irradiance, it includes also an Internal cell Temperature Sensor. It is supplied along with Mounting Bracket and Cable. WORKING PRINCIPLES A silicon solar cell can be used as an irradiance sensor, because the short-circuit current is proportional to irradiance. Our sensors are built out of a monocrystalline solar cell connected to a shunt. Due to the low resistance of the shunt the cell operates next to short circuit. The temperature coefficient of the short-circuit current creates a small error. The compensation is realized by using a temperature sensor laminated to the rear side of the solar cell. The measuring signals of short- circuit current of the cell and the resistance value of the temperature sensor are measured by a micro controller. The calculated values of irradiance and temperature given onto a 4-20mA protocol. The electronic circuit is optimized for low power consumption. CONSTRUCTION FEATURES Monocrystalline Cell: The cell is laminated with 2 EVA sheets, one Tedlar sheet and 3mm tempered glass under 180 °C homogeneous temperature and under vacuum effect. The size of the monocrystalline cell is 52×52 mm² or 31x31mm². Sensor Box: It is an UV protected aluminum box. The sensor box has two opening access and the mounting holes on its sides are for easy site installation. There are three options for IP Class; IP54, IP65 and IP68. For ventilation purpose, there are 1mm holes at bottom side of the box, or a ventilation plug on its side. SEVEN Sensor Solutions, as a weather station supplier, produces two types of irradiance sensors: one with a Modbus RTU output and other with an analog output. SEVEN’s Analog Irradiance Sensor In general, analog sensors produce a continuous output signal or voltage that is usually proportional to the measured quantity. Physical quantities such as temperature, velocity, pressure, displacement, strain, etc. are all analog quantities because they tend to be continuous in nature. The SEVEN Irradiance Sensor, with 4-20mA output, is a weatherproof junction box made of UV-resistant materials. It is made from a monocrystalline solar cell connected to a high-precision shunt. It contains an analog output which is used to measure the radiation value in solar power plants by plugging into analog input dataloggers. The 4-20mA irradiance sensor is mounted in such a way that it receives solar radiation straight from the sun. It must therefore be aligned with the photovoltaic panels in order to obtain the same measurements. The height at which the photovoltaic pyranometer is mounted is not critical for the accuracy of the measurement. SEVEN sensor Solutions provides an irradiance sensor with mounting brackets on both sides, so that it can be flexibly mounted on the solar panel, no matter where it is located.

Irradiance Sensor With 0-1,5V Output This Irradiance Sensor is used to measure the radiation flux density of Solar PV Plants having an 0-1,5V Input Datalogger. Besides Irradiance, it includes also an Internal cell Temperature Sensor. It is supplied along with Mounting Bracket and Cable. This Model of Irradiance Sensor is 100% compatible with SolarEdge Gateway and all other Dataloggers having 0-2V port. WORKING PRINCIPLES A silicon solar cell can be used as an irradiance sensor, because the short-circuit current is proportional to irradiance. Our sensors are built out of a monocrystalline solar cell connected to a shunt. Due to the low resistance of the shunt the cell operates next to short circuit. The temperature coefficient of the short-circuit current creates a small error. The compensation is realized by using a temperature sensor laminated to the rear side of the solar cell. The measuring signals of short- circuit current of the cell and the resistance value of the temperature sensor are measured by a micro controller. The calculated values of irradiance and temperature given onto a 0-1,5V protocol. The electronic circuit is optimized for low power consumption. CONSTRUCTION FEATURES Monocrystalline Cell: The cell is laminated with 2 EVA sheets, one Tedlar sheet and 3mm tempered glass under 180 °C homogeneous temperature and under vacuum effect. The size of the monocrystalline cell is 52×52 mm² or 31x31mm². Sensor Box: It is an UV protected aluminum box. The sensor box has two opening access and the mounting holes on its sides are for easy site installation. There are three options for IP Class; IP54, IP65 and IP68. For ventilation purpose, there are 1mm holes at bottom side of the box, or a ventilation plug on its side.

Pyranometers The Thermopile Pyranometer is part of the SEVEN meteorological sensors range, which includes professional and intelligent measuring sensors with a digital interface for environmental and industrial applications such as PV plants. It is designed to accurately measure the Global Horizontal Irradiance. The measured irradiance is transmitted to the data loggers and receiver units via a 2-wire RS485 bus with Modbus RTU protocol. SEVEN offer 3 models pf Thermopile Pyranometers; Class A, Class B, and Class C as per ISO 9060: 2018

Dual Orientations Irradiance Sensor This Irradiance Sensor Model’s designation is 3S-2IS. It is specially developed to calculate the Performance Ratio (PR) for the dual orientation PV plants, as it calculates the average irradiance value as per the number of panels in each direction. Installation directions of panels in PV power plants and the number of panels in these directions may be different. The user will be able to set the number of panels in each orientation for the correct calculations. 3S-2IS special design allows simultaneous connection of two Irradiance Sensors, two Module Temperature Sensors, an Ambient Temperature Sensor, and a Wind Speed Sensor. The number of panels in both directions, to which the sensors are connected, is entered into the electronic card via 3S-2IS Configuration Interface. The total effective irradiance and total effective module temperature can be calculated and communicated to the datalogger via Modbus RTU protocol. By using these values, the accurate Performance Ratio can be calculated in the monitoring systems.

Multi-Orientation Irradiance Sensor This Irradiance Sensor Model’s designation is 3S-4IS. It is specially developed to calculate the Performance Ratio (PR) for the PV plants with three or four orientations, as it calculates the average irradiance value as per the number of panels in each direction. The user will be able to set the number of panels in each orientation for the correct calculations. The special design of the electronic box used allows simultaneous connection of up to four Irradiance Sensors, up to four Module Temperature Sensors, an Ambient Temperature Sensor, a Wind Speed Sensor, and a Wind Direction Sensor. The number of panels in different directions, to which the sensors are connected, is entered into the electronic box via 3S-4IS Configuration Tool. The total effective irradiance and total effective module temperature can be calculated and communicated to the datalogger via Modbus RTU protocol. By using these values, the accurate Performance Ratio can be calculated in the monitoring systems.

Low-Cost Irradiance Sensor The Low-Cost Irradiance Sensor is used to measures the irradiance value for residential and rooftop applications or small-scale projects. The industrial, commercial and utility-scale PV project requires advanced features and high accuracy for meteorological sensors. However, this is not the case for residential and small-scale PV applications. The cost of the sensor should be proportional to scale of the PV system. SEVEN achieved that by Low-Cost Irradiance Sensor. The measured irradiance data are transmitted to monitoring devices, data loggers, and other receiving units via serial RS485 interface with MODBUS RTU protocol.

Albedometer The Albedometer is used to measures the irradiance values as well as the albedo ration of bifacial panels. Besides the mentioned measurements, it includes also the Internal cell Temperature Sensor. It is supplied along with Mounting Bracket and Cable. All measured meteorological data are transferred to dataloggers andreceiver units via a 2-wire RS485 bus with Modbus RTU protocol. The PV Albedometer provides the needed data to calculate the performance ratio and measure the solar albedo when bifacial panels are used.

Ambient Temperature Sensor-PT1000 Ambient Temperature Sensor measures the air temperature in the environment where the PVs are placed in degrees Celsius (°C) by using a PT1000 probe. This Ambient Temperature Sensor Model is compatible with SEVEN Irradiance Sensor Box. It is supplied with mounting facility, and protected from direct sunlight & radiations by a plastic radiation shield with four aspirated plates that allow the air to pass freely.

Ambient Temperature Sensor-PT1000 with Modbus Output Ambient Temperature Sensor measures the air temperature in the environment where the PVs are placed in degrees Celsius (°C) by using by using a PT1000 probe. This Ambient Temperature Sensor Model is compatible with all Dataloggers and PLCs with RS485 input port. It is supplied with mounting facility, and protected from direct sunlight & radiations by a plastic radiation shield with four aspirated plates that allow the air to pass freely.

Ambient Temperature Sensor-PT1000 with 4-20 mA Output Ambient Temperature Sensor measures the air temperature in the environment where the PVs are placed in degrees Celsius (°C) by using a PT1000 probe. In order to communicate via 4-20mA, a transducer is used to convert PT000 to the required Output signal. This Ambient Temperature Sensor Model is compatible with all Dataloggers, Gateways, and PLCs with 4-20 mA input port. It is supplied with mounting facility, and protected from direct sunlight & radiations by a plastic radiation shield with four aspirated plates that allow the air to pass freely.

Ambient Temperature Sensor-PT1000 with 0-10V Output Ambient Temperature Sensor measures the air temperature in the environment where the PVs are placed in degrees Celsius (°C) by using a PT1000 probe. In order to communicate via 0-10V, a transducer is used to convert PT000 to the required Output signal. This Ambient Temperature Sensor Model is compatible with all Dataloggers, Gateways, and PLCs with 0-10V input port. It is supplied with mounting facility, and protected from direct sunlight & radiations by a plastic radiation shield with four aspirated plates that allow the air to pass freely.

Module Temperature Sensor-PT1000 Module temperature sensor measures the back of the solar panels temperature in degrees Celsius (°C) by using a PT1000 probe. The probe, used to measure the Back of Module Temperature, is placed between two Backsheet with EVA sheets. This Module Temperature Sensor is compatible with SEVEN Irradiance Sensor Box. The main advantage of the sensor is its structure, which is similar to the back of the PV module. Thus, the heat transfer behavior of the sensor and PV module will be similar which is the requirement. Module Temperature Sensor-PT1000 with Modbus Output Module temperature sensor measures the back of the solar panels temperature in degrees Celsius (°C) by using a PT1000 probe. The probe, used to measure the Back of Module Temperature, is placed between two Backsheet with EVA sheet. In order to communicate via Modbus RTU Protocol, a transducer is used to convert PT000 to Modbus RTU. This Module Temperature Sensor Model is compatible with all Dataloggers and PLCs with RS485 input port. Module Temperature Sensor-PT1000 with 4-20 mA Output Module temperature sensor measures the back of the solar panels temperature in degrees Celsius (°C) by using a PT1000 probe. The probe, used to measure the Back of Module Temperature, is placed between two Backsheet with EVA sheet. In order to communicate via 4-20mA, a transducer is used to convert PT000 to the required Output signal. This Module Temperature Sensor Model is compatible with all Dataloggers, Gateways, and PLCs with 4-20 mA input port. Module Temperature Sensor-PT1000 with 0-10V Output Module temperature sensor measures the back of the solar panels temperature in degrees Celsius (°C) by using a PT1000 probe. The probe, used to measure the Back of Module Temperature, is placed between two Backsheet with EVA sheet. In order to communicate via 0-10V, a transducer is used to convert PT000 to the required Output signal. This Module Temperature Sensor Model is compatible with all Dataloggers, Gateways, and PLCs with 0-10V input port.

Wind Speed Sensor With Pulse Output Wind speed sensor, also known as anemometer, is one of weather station sensors. This Sensor measures wind speed by converting it into an electrical signal in m/s. The Wind speed sensor is designed to measure horizontal wind speed independently of direction. The measuring electronic element in the wind speed sensor is the reed relay driven by the rotating magnet connected to the wind bowls.The Wind Speed Sensor with Pulse Output is compatible with SEVEN Irradiance Sensor Box. It is supplied with mounting facility and cable. Wind Speed Sensor With Modbus RTU Output Small and economical Anemometer used for measuring Wind Speed in a Solar PV Plant. The Output Signal is Modbus RTU and it is compatible with all Modbus RTU dataloggers. It is supplied along with Cable. Wind Speed Sensor With Analog Output Wind speed sensor, also known as anemometer, is one of weather station sensors. This Sensor measures wind speed by converting it into an electrical signal in m/s. The Wind Speed Sensor is designed to measure horizontal wind speed independently of direction. The measuring electronic element in the wind speed sensor is the reed relay driven by the rotating magnet connected to the wind bowls.The Wind Speed Sensor with Analog Output is compatible with all Dataloggers, Gateways, and PLCs with Analog input port. It is supplied with mounting facility and cable. Heating option is available for locations where there is a risk of icing.

Wind Direction Sensor The Wind Direction Sensor is a professional meteorological device designed to measure horizontal wind direction. It uses a Hall Effect Position Sensor to detect changes in wind direction and converts them into a signal. The measured data is transmitted as an analog output signal (0-3.3V). This model can connect to SEVEN’s Irradiance Sensor, Sensor Box, and Compact Weather Station models via a pin connector. Wind Direction Sensor With Modbus Output The Wind Direction Sensor is is a professional meteorological sensor used to measure horizontal wind direction. It consists of two parts, the body, and the vane. It measures the Wind Direction in degree (°). The Wind Direction Sensor can be used for many reasons, such as the interpretation of the values of modules temperature, as a strong wind blowing from the North, for example, can cool the panel. It is also used is to document warranty claims related to the damage caused by the wind. The Wind Direction Sensor with Modbus Output is compatible with all Dataloggers supporting Modbus RTU Protocol. It is supplied with mounting facility and cable. Wind Direction Sensor With Analog Output The Wind Direction Sensor is is a professional meteorological sensor used to measure horizontal wind direction. It consists of two parts, the body, and the vane. It measures the Wind Direction in degree (°). The Wind Direction Sensor can be used for many reasons, such as the interpretation of the values of modules temperature, as a strong wind blowing from the North, for example, can cool the panel. It is also used is to document warranty claims related to the damage caused by the wind. The Wind Direction Sensor with Analog Output is compatible with all Dataloggers, Gateways, and PLCs having Analog input port. It is supplied with mounting facility and cable.

Ultrasonic Anemometer It is a two-axis static ultrasonic anemometer used for accurate measurements of Wind Speed and Direction in all environmental conditions. It is Capable of measuring wind speed up to 85 m/s without giving up. Heating option is available, for quick defrosting. A model with anodized aluminum alloy case with anti-corrosion coating is available. This feature makes it possible to be used the instrument even in particularly aggressive environments. The anemometer meets the requirements of MIL-STD-810G Method 509.6 (salt spray corrosion test). High immunity to electromagnetic interference makes it suitable for measurements in electrically noisy environments. All measured meteorological data are transferred to dataloggers andreceiver units via a 2-wire RS485 bus with Modbus RTU protocol. This sensor is also equipped with two analog outputs for wind speed and direction, factory-configurable within 4-20 mA (standard), 0…1 V, 0…5 V or 0…10 V (to be specified when ordering) All sensors are factory-calibrated and do not require additional interventions of the user.

Automatic Soiling Sensor SEVEN Soiling Sensor is designed to measure the loss of energy production due to soiling caused by environmentalfactors on photovoltaic panels. The Soiling sensor, which is suitable for commercial, utility, industrial and rooftop projects,notifies the user of production losses due to soiling. If soiling ratio read from the sensor is 10%, it means that there is10% energy loss in the facility. DESCRIPTION SEVEN Soiling Sensor calculates the soiling rate of the PV system by comparing the irradiance values received fromtwo clean and dirty irradiance sensors. While the dirty irradiance sensor in the system is exposed to soiling in the sameway as the panels, the clean irradiance sensor is automatically cleaned every day. Monitoring systems give the user theenergy loss by comparing the two irradiance values according to the data received from the cleaned and dirty irradiance sensors. The system consumes approx. 100 mililiter water for single run for 2,5 meters water hose length. The water tank is able to serve 400 days (13.3 months). Consult SEVEN if the water hose longer than 2,5 meters.

Manual Soiling Sensor with Modbus Output SEVEN Soiling Sensor is designed to measure the loss of energy production due to soiling caused by environmental factors on photovoltaic panels. The Soiling Sensor is used to know the production losses due to soiling. If soiling level read from the sensor is 10%, it means that there is 10% energy loss in the facility (PV Soiling = Energy Loss) The measured Soiling Level is transferred to dataloggers and receiver units via a 2-wire RS485 bus with Modbus RTU protocol, and it is SunSpec compliant.

Manual Soiling Sensor with HMI-PLC Monitoring SEVEN Soiling Sensor is designed to measure the loss of energy production due to pollution caused by environmentalfactors in photovoltaic modules. The Soiling sensor, which is suitable for commercial, utility, industrial and rooftopprojects, notifies the user of production losses due to pollution. If soiling level read from the sensor is 10%, it means thatthere is 10% energy loss in the facility. SEVEN Soiling Sensor calculates the soiling level of the PV system by comparing the irradiance values received fromthe two clean and dirty irradiance sensors. While the dirty irradiance sensor in the system is exposed to contaminationin the same way as the panels, the clean irradiance sensor is cleaned manually by the user with a wet cloth. The data received from the Manual Soiling Sensor can be monitored by PLC.

Taşınabilir Toz Sensörü Taşınabilir Toz Sensörü, GES sahalarında yerinde panel üzeri toz oranını ölçmek için SEVEN Sensör tarafından geliştirilen ve patent başvurusu yapılmış yenilikçi teknolojiye dayalı bir üründür. Bu sensör, fotovoltaik (PV) sistemlerdeki güneş panelleri üzerinde biriken toz miktarını ölçmek için geliştirilmiştir. Kompakt ve dayanıklı tasarımıyla, en son optik teknolojiyi ve ileri elektronik sistemleri bir araya getirerek doğru ve güvenilir toz seviyesi ölçümleri sunar. Cihaz, ışık yansıması ve saçılımı prensiplerini kullanarak panel yüzeyindeki toz birikimini değerlendirir. Kullanıcılar, cihazın entegre LCD dokunmatik ekranı aracılığıyla panel hücresi rengi, toz tonu ve toz rengi gibi temel parametreleri girer. Sensör içindeki lambalar panel yüzeyine yüksek lümen değerinde stabil ışık yansıtır. Yansıyan ışık, mekanik yapı içerisinde bulunan yüksek hassasiyetli sensörler tarafından algılanır ve ölçülür. Elde edilen sonuçlar, gelişmiş bir mikrodenetleyici tarafından işlenerek ekran üzerinde dijital olarak görüntülenir, böylece verilerin kolayca yorumlanması sağlanır. Taşınabilirliği ve kullanım kolaylığı ile öne çıkan 3S-SMS-P, şarj edilebilir bir batarya ile çalışır ve 3 saate kadar kullanım süresi sunar.

Compact Weather Station The Compact Weather Station is an all-in-one weather station with measures of irradiance, module & ambient temperature, wind speed, wind direction, relative humidity, air pressure and rainfall. All measured meteorological data are transferred to dataloggers and receiver units via a 2-wire RS485 bus with Modbus RTU protocol. The flexible design of the Compact Weather Station makes it possible to select the connected sensors according to the required parameters in meteorological applications.

The SEVEN Mini Weather Station is designed specifically for monitoring PV facilities, providing an easy-to-install and durable solution suitable for field conditions. It can read the following data: 1- Horizontal Wind Speed2- Horizontal Wind Direction3- Ambient Temperature4- Relative Humidity The aluminum parts of the sensor are coated with anodized protection, and the plastic parts are made from ABS for enhanced durability. SEVEN Mini Weather Station is available in three models to meet varying customer needs: 3S-WS&D: Measures Wind Speed and Direction3S-AT-WS&D: Measures Wind Speed, Direction, and Ambient Temperature3S-RH&AT-WS&D: Measures Wind Speed, Direction, Ambient Temperature, and Relative Humidity

Rain Gauge with Pulse Output SEVEN Rain Gauge is designed to accurately measure the rainfall with a collection area of 200 cm² using the reed relay with the principle of tipping buckets. The sensor housing is made of seawater resistant anodized aluminum, making it extremely durable and resistant. This Rain Gauge Model is compatible with SEVEN Compact Weather Station and Sensor Box models. Rain Gauge with Modbus RTU Output SEVEN Rain Gauge is designed to accurately measure the rainfall with a collection area of 200 cm² using the reed relay with the principle of tipping buckets. The sensor housing is made of seawater resistant anodized aluminum, making it extremely durable and resistant. The measured value can be transmitted to monitoring instruments, dataloggers and other receiving units via the serial RS485 interface with Modbus RTU protocol.

Doppler Radar The Doppler Radar serves as a tool to accurately measures the speed of various condensed water forms such as rain, freezing rain, hail, snow, and sleet. Its low-energy sensor efficiently detects precipitation right from the initial drop. With extensive applications across hydrology, water management, agricultural sciences, environmental studies, building automation, meteorology, airport operations, and traffic control, the radar's capabilities are virtually boundless. This advanced rain gauge is capable of measuring precipitation across diverse global locations. All meteorological data collected is seamlessly transmitted to dataloggers and receiver units through a 2-wire RS485 bus utilizing the Modbus RTU protocol.

Snow Sensor SEVEN Snow Sensor is designed to measure the loss in energy production caused by snowfall on photovoltaic modules. Suitable for both ground and rooftop projects, the snow sensor notifies the user of production losses due to snowfall. If the snow ratio read from the sensor is 10%, it means that there is 10% energy loss in the facility. Snow Ratio = Energy Loss The SEVEN Snow Sensor calculates the snow ratio of the PV plant by comparing the irradiance data received from two reference cells, with and without snow. The SEVEN Snow Sensor offers a special solution for Photovoltaic projects with Solar Tracker systems. By analyzing irradiance data from the snow and snow-free reference cells, the Snow Sensor calculates snow ratio and communicates it with the Tracker control center to adjust the modules positions based on the snow accumulation, thereby saves energy by avoiding unnecessary system operation.

Snow Depth Sensor The Snow Sensor, an advanced digital ultrasonic device, offers precise and ongoing measurements of snow depth through sophisticated spectrum analysis and an exceptional wide-band transducer. Its efficient power usage and minimal maintenance make it an ideal choice for alpine and remote setups.

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