CMP/CMA series manualPage 62. Installation and operation2.1. DeliveryCheck the contents of the shipment for completeness (see below) and note whether any damage hasoccurred during transport. If there is damage, a claim should be filed with the carrier immediately. Inthis case, or if the contents are incomplete, your dealer should be notified in order to facilitate therepair or replacement of the instrument.Contents of delivery:1. Radiometer2. Sun shield3. Cable with connector4. Test reports5. Instruction sheet6. Radiometer fixing kit7. 2 x desiccant bags8. Product documentation CDAlthough all CMP/CMA radiometers are weatherproof and suitable for harsh environmental conditions,they have some delicate mechanical parts. Please keep the original packaging for safe transport of theradiometer to the measurement site or for use when returning the radiometer for calibration.The calibration certificate supplied with the instrument is valid for 1 year from the date of first use bythe customer, subject to the variations in performance due to specific operating conditions that aregiven in the instrument specifications. The calibration certificate is dated relative to the time ofmanufacture, or recalibration, but the instrument does not undergo any sensitivity changes when keptin the original packing and not exposed to light. From the moment the instrument is taken from itspackaging and exposed to irradiance the sensitivity will deviate slightly with time. See the 'non-stability'performance (maximum sensitivity change per year) given in the radiometer specification list.2.2. Mechanical installationThe mechanical installation of the radiometer depends upon the measuring purpose. Differentmeasuring methods will be explained in the next paragraphs.2.2.1. Installation for measurement of global radiationThe following steps must be carefully taken for optimal performance of the instrument.1. DesiccantCheck the condition of the desiccant and replace if necessary, for example after a long storage period.2. LocationIdeally the site for the radiometer should be free from any obstructions to the horizon above the planeof the sensing element. If this is not possible, the site should be chosen in such a way that anyobstruction over the azimuth range between earliest sunrise and latest sunset should have anelevation not exceeding 5 o (the apparent sun diameter is 0.5 o).