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Fluke 561 - page 1
® 561 HV A CPr o Infrared Thermometer Users Manual PN 2562924 February 2006 © 2006 Fluke Corp oration, All ri ghts reserved. Pr inted in USA All product names ar e trademarks of their respective c ompanies. ...
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Fluke 561 - page 2
LIMITED WARRANTY AND LIMITATION OF LIABILITY This Fluke product will be free from defect s in material and workmanship for two years from the date of purchase. This warranty do es not cover fuses, disposable batteries, or damage from accident, neglect , misuse, alteration, contamination, or abnormal conditions of operation or handling. Resellers ar ...
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Fluke 561 - page 3
i Table of Contents Title Page Introducti on ............................................................................................. 1 Contacting Fluke ...................................................................................... 1 Safety Information ................................................................................... ...
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Fluke 561 - page 4
561 HVACPro Users Manual ii Measuring Grille, Registe r, or Diffuser Discharge Tempe rature ......... 15 Verifying Thermostat/ Room Sensor Acc uracy .................................... 15 Checking for Blockage in Air-To-Air Evaporators or Condensers........ 15 Checking Superheat on Fixed Restrictor or Capillary Tube Equipped Evapor ators ......... ...
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Fluke 561 - page 5
1 561 HVAC PRO Infrared Thermometer Introduction The Fluke Model 561 HVACPro Infrared Thermometer (hereafter, “the Thermometer”) can determine the surface temperature by measuring the amount of infrared energy radiated by the ta rget’s surface or by contact using a thermocouple probe. The Thermomete r was designed specif ically for use in hea ...
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Fluke 561 - page 6
561 HVACPro Users Manual 2 Safety Information W Warning A Warning identifies conditi ons and actions that pose haz ards to the user. To avoid el ectrical shock or personal injury, foll ow these guidelines: • * Do not point laser direct ly at eye or indirectly off reflective surfaces. • Before using the Ther mometer inspect the case. Do not use ...
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Fluke 561 - page 7
Infrared Thermometer Features 3 A V O I D E X P O S U R E - L A S E R R A D IA T IO N IS E M IT T E D F R O M T H IS A P E R T U R E CA UTION L A S E R R A D IA T IO N - D O N O T S T A R E IN T O B E A M O U T P U T < 1 m W W A V E L E N G T H 6 3 0 - 6 7 0 n m C L A S S 2 ( II ) L A S E R P R O D U C T C O M P L IE S W IT H F D A 2 1 C F R 1 0 ...
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Fluke 561 - page 8
561 HVACPro Users Manual 4 AA Batteries (2) Display Function Buttons Laser T rigger Battery Cover efh007f.eps Figure 2. Infrared Th ermometer Display The primary temperature display reports the current or last IR temperature read until the 7-second hold time elapses. The secondary temperature display reports current th ermocouple temperature when a ...
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Fluke 561 - page 9
Infrared Thermometer Buttons and Connector 5 3 4 5 6 2 1 8 7 efh01f.eps A Laser “On” symbol B SCAN or HOLD C ° C/ ° F symbol (Celsius/Fahrenheit) D Primary temperature display E Secondary temperature display F Emissivity LO, MED, HI G Temperature values for the MIN, MAX, DIF, KTC. KTC indicates the thermo couple temperature. H Low Battery sym ...
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Fluke 561 - page 10
561 HVACPro Users Manual 6 How the Thermometer Works Infrared thermometers m easure the surface tempera ture of an opaque object. The Thermometer’s optics sense infrared energy, whic h is collected and focused onto a detector. The Thermometer’s electronics then translate the information in to a displayed temperature reading which appears on the ...
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Fluke 561 - page 11
Infrared Thermometer Operating the Thermometer 7 D:S=12:1 38 mm @ 300 mm 75 mm @ 900 mm 132 mm @ 1500 mm 1.5 " @ 12 " 3 " @ 36 " 5.3 " @ 60 " S D efh005f.eps Figure 5. Distance and Spot Size Field of View Make sure that the target is larger than the spot size . The smaller the target, the closer you should be to it. Se ...
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Fluke 561 - page 12
561 HVACPro Users Manual 8 Table 2. Surface Emissi vity Measured Surface Switch Setting Measured Surface Switch Setting Aluminum Iron, Cast Oxidized Low Oxidized High, Medium Alloy A3003 Unoxidized Low Oxidized Low Molten Low Roughened Low Iron, Wrought Brass Dull High Burnished Low Lead Oxidized Low Rough Low Copper Oxidized Low, Medium Oxidized M ...
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Fluke 561 - page 13
Infrared Thermometer Operating the Thermometer 9 Switch efh012f.eps Figure 7. Switching Bet ween ° C and ° F Using the Contact Temperature Probe XW Warning To avoid electri cal shock or personal injury, do not connect the optional external probe to l ive electrical circuits. Connect the probe to the input on the t op of the The rmometer. The ...
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Fluke 561 - page 14
561 HVACPro Users Manual 10 Table 3 lists recommended Fluke temperatur e probes for use with the Thermometer: Table 3. Recommended Tem perature Probes Probe Usage 80PK-25 The piercing probe is the most versatile option. Good for checking air temperature in ducts, surface temperature under carpets/pads, liquids, thermometer wells, vent temperatures, ...
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Fluke 561 - page 15
Infrared Thermometer Typical Measurements 11 • The most likely conditions for condensation form ation are low dry bulb te mperat ure and high wet bulb temperature (low temperat ure, high relat ive humidity). • Use the Fluke 971 to measure the attic/crawlspace relative humidity and determine the dew point temperature. This is the temperature at ...
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Fluke 561 - page 16
561 HVACPro Users Manual 12 Testing Contactors (Starters) 1. Press D to select emissivity. Press A to select LO for bright c ontacts, or MED for darkened contacts. 2. Press C and the press A to select MAX. 3. Measure line and load side of one pole without releasing trigger. 4. A temperature difference between th e line and load sides of a pole indi ...
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Fluke 561 - page 17
Infrared Thermometer Typical Measurements 13 Testing Bearings W Warning To avoid injury when t esting bearings: • Do not wear loose clothi ng, jewelry, or anything around neck when working around moving parts such as motors, belts, blower, and f ans. • Make sure an electrical di sconnect is within reach a nd operating correctl y and freely. • ...
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Fluke 561 - page 18
561 HVACPro Users Manual 14 wall you should find parallel isotherm al rows indicating the location of heat t ubes below the surface. Perpendicular to the outside wall, you should fi nd rising and falling temp erat ures at equal distances. High temperatures indicate you are scanning a heat tube be neath the floor surface, low falling temperature s i ...
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Fluke 561 - page 19
Infrared Thermometer Typical Measurements 15 • If system pressure has been incr eased above design settings, this can result in sympto m of trap failure (stuck open). Check steam pressure. 1. Press D and then press A to select HI emissivity for bl ack iron pipe and painted traps. 2. Press C and then press A to select DIF. 3. Aim the Thermometer a ...
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Fluke 561 - page 20
561 HVACPro Users Manual 16 • All condenser return bend/hairpi ns should be at or slightly less than condenser saturation temperature. • If a group of return bends/hairpins do not confor m to expected temperatures, that indicates a blocked or restricted distri butor or dist ributor tube. Checking Superheat on Fixed Restrictor or Cap illary Tube ...
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Fluke 561 - page 21
Infrared Thermometer Maintenance 17 Maintenance Changing the Battery To install or change the two AA batteries, open the battery compartment and insert the batteries as shown in Figure 2. Cleaning the Lens Blow off loose particles using clean compressed air. Carefully wipe the surface with a moist cotton swab. The swab may be moistened with water. ...
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Fluke 561 - page 22
561 HVACPro Users Manual 18 Specifications Infrared Measurement Range ................................................................ -40 ° C to 550 ° C (-40 ° F to 1022 ° F) Spectral Range ......................................................................... 8 to 14 microns Accuracy ........................................................ ...
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