Fluke 561 FE 561 Users Manual - Page 16

561 Users Manual Measured Surface Aluminum Oxidized Alloy A3003 Oxidized Roughened Brass Burnished Oxidized Copper Oxidized Electrical Terminal Blocks Haynes Alloy Inconel Oxidized Sandblasted Electoropolished Iron Oxidized Rusted Table 2. Surface Emissivity Switch Setting Low Low Low Low Low Medium Measured Surface Iron, Cast Oxidized Unoxidized Molten Iron, Wrought Dull Lead Rough Oxidized Molybdenum Medium Oxidized Medium High, Medium Medium Low High, Medium Medium Nickel Oxidized Platinum Black Steel Cold-Rolled Ground Sheet Polished Sheet Zinc Oxidized Switch Setting High, Medium Low Low High Low Low, Medium Low, Medium Low High High Medium Low Low Switching Between °C and °F Open the battery compartment and locate the switch positioned between the left side of the battery near the Thermometer wall. To toggle between °C and °F, use a small screwdriver or paper clip to move the switch to the desired position. See Figure 7. 8