Maintenance doesn't COST.... it PAYS !

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Although proper site selection and installation is the first step in guaranteeing quality data, on-going periodic maintenance and verification of the systems sensors and equipment is essential in assuring that high quality data is consistently obtained.  ALL sensors and sites have specific requirements that need to be checked and taken care of to maintain good quality data.  Many of these aspects could probably be monitored remotely and faulty data or equipment could be observed in this manner to minimize field visits, or, to make the field visit / repair most productive.