Pyranometer Sensors

The high output 7241C-A pyranometer / solar radiation sensor is a compact sensor for solar energy measurements. It compares favourably with thermopile sensors at a lower price point.

The sensor features a fully potted, domed-shaped head making the sensor fully weatherproof, self-cleaning, and impervious to thermal-based accuracy fluctuations. The pyranometer sensor is calibrated against precision
reference thermopile sensors in natural light conditions.

This generation sensor head design includes:

• – Built-in amplifier
• – Self-cleaning dome-shaped head
• – Excellent cosine response
• – Potted solid to withstand extreme and humid conditions, and reduce thermal-based accuracy fluctuations
• – Calibrated silicon-cell photodiode sensor accurate to ±5%, under clear sky conditions
• – Easily integrates with Unidata Starlog loggers and Neon Remote Terminals

The 7241C-E pyranometer technology combines the advantages of the reference cell and broadband thermopile pyranometers. Compared to the reference sensors it has proper cosine response and it is relatively compact. It benefits from the same characteristics as a PV module i.e. response time, spectral and temperature response.

The ML-01 is an industrial-grade solar sensor specially made for performance ratio measurements as well as irradiance measurement applications for the meteorological, agricultural and environmental studies. The compact dimensions of the sensor body make it easy to integrate within any application using it with or without mounting plate. For global horizontal measurement applications, the sensor can be mounted in a horizontal position with the standard removable mounting plate with a spirit level and levelling feet.

The Mono-Silicon detector, with UV resistant diffuser, gives a cosine response also at low solar elevation angles. Besides the effects of soiling or water deposition on top of the diffusor will be minimized due to the cone shape geometry.

Unidata can provide a mounting assembly that is ideal for mounting radiation sensors/ pyranometers.
Radiation sensors must be optically levelled to ensure repeat measurements are accurate and to ensure for repeat measurements are at the same level orientation to the sun.

Radiation sensor mounting assembly includes a levelling unit fitted with a bulls eye as well as a mounting arm and mounting hardware for poles to a maximum of 60mm diameter.