Fluke 561 - Manual (Page 3)

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Table of Contents
Title Page
Introduction............................................................................................. 1
Contacting Fluke...................................................................................... 1
Safety Information................................................................................... 2
Features................................................................................................... 3
Display..................................................................................................... 4
Buttons and Connector............................................................................ 5
How the Thermometer Works ................................................................. 6
Operating the Thermometer .................................................................... 6
Locating a Hot or Cold Spot ................................................................ 6
Distance and Spot Size........................................................................ 6
Field of View ........................................................................................ 7
Emissivity ............................................................................................ 7
Switching Between ° C and ° F.............................................................. 8
Using the Contact Temperature Probe ................................................ 9
HOLD................................................................................................... 10
Typical Measurements ............................................................................ 10
Measuring Heating/Cooling Duct Insulation Jacket Temperature ....... 10
Measuring Dewpoint Temperature ...................................................... 10
Testing Insulated Return Ducts........................................................... 11
Scanning Walls for Air Leaks or Insulation Deficiencies ..................... 11
Testing Contactors (Starters).............................................................. 12
Testing Enclosed Relays...................................................................... 12
Testing Fuses and Buss Connections.................................................. 12
Testing Electrical Connections ............................................................ 12
Testing Bearings.................................................................................. 13
Testing Belts and Sheaves................................................................... 13
Checking Hydronic Radiant Heat Applications .................................... 14
Testing Radiant Heat Applications....................................................... 14
Testing Water Heater Insulation .......................................................... 14
Testing Steam Traps ........................................................................... 14