Fluke 61 FE 61 Users Manual - Page 7

English Emissivity Most organic materials and painted or oxidized surfaces have an emissivity of 0.95 (pre-set in the unit). Inaccurate readings will result from measuring shiny or polished metal surfaces. To compensate, cover the surface to be measured with masking tape or flat black paint. Allow time for the tape to reach the same temperature as the the material underneath it. Measure the temperature of the tape or painted surface. Maintenance Lens Cleaning: Blow off loose particles using clean compressed air. Gently brush remaining debris away with a camel's hair brush. Carefully wipe the surface with a moist cotton swab. The swab may be moistened with water. NOTE: DO NOT use solvents to clean the plastic lens. Case Cleaning: Use soap and water on a damp sponge or soft cloth. NOTE: DO NOT submerge the unit in water. Troubleshooting Code - - - (on display) Battery icon appears Blank display Laser doesn't work Problem Target temperature is over or under range Possible low battery Possible dead battery Low or dead battery Action Select target within specifications Check and/or replace battery Check and/or replace battery Replace battery 5