Consultation with substance
Our experienced engineers are here to assist you with your photovoltaic project, finding solutions that precisely match your specific requirements. At IMT, you won't encounter impersonal customer service. We pride ourselves on delivering bespoke advice.
Get in touch with us!
General Inquiries
T +49 5151 403699-0
E info@imt-technology.com
Support during commissioning
Our experienced engineers will be happy to assist you with commissioning and integration into your system. You are welcome to use our technical support via email, telephone or online.
T +49 5151 403699-0
E support@imt-technology.com
Calibrated with precision
Precise, reliable sensor calibration is essential to ensure dependable measurement readings. As you would expect, we perform calibration on every device before shipping, but we will gladly also provide regular recalibration for you in our laboratory.
Book your calibration today!
T +49 5151 403699-0
E info@imt-technology.com
Questions about products
Frequently asked questions
The sensor element’s design is similar to that of a PV module; this means that their spectral response (SR) and incident angle modifier (IAM) are highly comparable. Consequently, these sensors are eminently suitable as a reference for PV system monitoring. Pyranometers, on the other hand, behave very differently compared to PV modules due to their construction with the glass dome and the black receiver surface as a sensor element.
Therefore, these reference solar cells are particularly suitable as a reference for monitoring PV systems.
Si sensors used for monitoring of PV installations must be installed with the same alignment and inclination as the PV generator. The mounting location should be free of shading as far as possible.
To facilitate maintenance and cleaning of the Si sensor, the Si sensor should be mounted in an easily accessible place.
The type of input from the data logger or inverter is crucial for choosing the correct sensor type. We offer Silicon Irradiance Sensors and temperature sensors with various analog outputs (e.g. 0 to 10 V and 4 to 20 mA) and digital versions with RS485/MODBUS.
Please check the requirement of region. If the installation of the sensors is within the protected area of the lightning protection, you have to use in Germany protectors between the boundary of 0B to 1. With metal roofs and a connected lightning protection system you need in Germany a system for the boundary between 0A to 1.
Frequently asked questions
PV module temperature measurement is decisive as solar cell performance is highly dependent on the temperature. The efficiency of PV cells typically decreases as the temperature rises. The decrease needs to be taken into account when calculating the performance ratio. This provides a more precise evaluation of your PV system’s productivity and thus also prompt fault detection.
Measuring the ambient temperature can detect reduced yields caused by ambient conditions such as ice formation and thus prevent unnecessary servicing visits.
Temperature sensors shall be placed in representative locations to capture the range of variation and allow determination of an effective average. For crystalline silicon modules, select the centre of the centre-most cell within the module, or, when the module is built with even numbers of rows or columns of cells, select one of the cells closest to the centre.
For bifacial modules, rear-side temperature sensors and wiring shall obscure < 10 % of the area of any cell, and wiring should be routed in between cells when possible.
Due to the very small size of the sensor element housing (covers less than 2 % in full size M6 or half-cut M12 cells) and the thin sensor elemnt cable (diameter of 3,5 mm) the module temperature sensors of IMT Technology are very suitable for bifacial PV modules.