Proper operation over time is achieved when the BRY-SCAN measuring sensors has no debris, dust, dirt or any other contaminate substance that might prevent proper operation. While the BRY-SCAN measuring sensor does not require special maintenance, some precautions are necessary to keep the system proper operation. The passage through the sensor of some products may generate dust or other contaminates that with time tends to aggregate and stick to walls of the sensor. These residues can distort the measurement, it is necessary to remove all traces of the product using a dry cloth or compressed air.