Solar Light’s Model PMA1144 is an analog ISO-Classified Class II Pyranometer with very broad spectral sensitivity, exceptional flatness, and excellent long term stability. This model features a sixty-four thermocouple junction sensing element, coated with a highly stable carbon based non-organic substance, which delivers superb spectral absorption and long term stability characteristics. The unit’s precision optical glass dome acts as a filter, with spectral bandpass that permits the full solar spectrum to pass through to the sensor. The glass dome also protects the high quality blackened thermopile sensor from the elements. As the incoming solar radiation heats the sensor, it produces a signal in the µvolt range. Each pyranometer has its own calibration factor, which is (along with the processing algorithm) is programmed into a memory chip embedded into the sensor. A 10-meter long cable is also included.
Due to almost ideal flatness of the spectral response, this Class II pyranometer is often used with a set of low wavelength blocking filters in order to measure radiant power distribution in various bands. The difference between the total power and the power measured with the filter is the radiant power in the band blocked by the filter. In solar radiation studies, the diffuse component of the total radiant flux can be measured by using a shadow-band casting a shadow on the pyranometer’s entrance. The difference between the total power and the diffuse power measured with shadow-band is the direct component. For better accuracy, a correction should be made for the part of diffuse radiation obstructed by the shadow-band itself.
The primary technical differences between the ISO-Classified Class I Model PMA1145 and the ISO-Classified Class II Model PMA1144 are as follows:
||Model PMA1144 (Class II)
||Model PMA1145 (Class I)
|Non-linearity (100 to 1000 W/m2)
||300 to 2800nm
||285 to 2800nm
||<5% (-10°C to +40°C)
||<4% (-10°C to +40°C)
|Accuracy of Bubble Level
1 YEAR STANDARD WARRANTY
SOLAR LIGHT COMPANY warrants that the equipment has been carefully tested, inspected and left the Factory in proper working condition, free of visible defects. SOLAR LIGHT COMPANY warrants the equipment to be free from defects in material and workmanship, under normal use and operation, for a period of one (1) year after the date of initial operation, or demonstration; or eighteen (18) months from the date of shipment from the Factory; or whichever occurs first. The warranty is limited to the free replacement of all-defective parts and free labor during the first year of warranty. Defective parts replaced under this warranty shall become the property of SOLAR LIGHT COMPANY. The above stated Warranty is subject to the following conditions: Equipment being installed within the United States of America, Canada, or sold by authorized SOLAR LIGHT COMPANY representatives or their agents outside the continental United States. The equipment being installed is operated and maintained in accordance with SOLAR LIGHT COMPANY’s operating instructions, maintenance instructions and specifications. Utilization of only SOLAR LIGHT COMPANY’s authorized parts and components. The utilization of a duly authorized representative for all work performed on SOLAR LIGHT COMPANY equipment during the warranty period. Any variation(s) to the above warranty must be in writing and mutually acceptable by SOLAR LIGHT COMPANY and the customer. The warranty shall not apply to damages resulting from errors in installation, nor shall it apply to any equipment, which has been subject to damages, alterations or misuse by the purchaser. Parts of the equipment, which would be generally considered as expendable service items during normal use, such as fuses, lamps, detector shields, etc., are not covered under the warranty. THERE ARE NO WARRANTIES, WHICH EXTEND BEYOND THIS DESCRIPTION, AND EXPRESSLY NO IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SOLAR LIGHT COMPANY BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OR ANTICIPATED LOSS OF PROFITS SUFFERED BY THE PURCHASER. Extended Warranty Plans are also available.