® 561 HVACPro Infrared Thermometer Users Manual PN 2562924 February 2006 © 2006 Fluke Corporation, All rights reserved. Printed in USA All product names are trademarks of their respective companies.
LIMITED WARRANTY AND LIMITATION OF LIABILITY This Fluke product will be free from defects in material and workmanship for two years from the date of purchase. This warranty does not cover fuses, disposable batteries, or damage from accident, neglect, misuse, alteration, contamination, or abnormal conditions of operation or handling. Resellers are not authorized to extend any other warranty on Fluke’s behalf.
Table of Contents Title Page Introduction............................................................................................. 1 Contacting Fluke...................................................................................... 1 Safety Information................................................................................... 2 Features................................................................................................... 3 Display..............................................
561 HVACPro Users Manual Measuring Grille, Register, or Diffuser Discharge Temperature ......... 15 Verifying Thermostat/Room Sensor Accuracy .................................... 15 Checking for Blockage in Air-To-Air Evaporators or Condensers........ 15 Checking Superheat on Fixed Restrictor or Capillary Tube Equipped Evaporators ......................................................................... 16 Checking Subcooling on Air-To-Air Systems With Expansion Valve Equipped Evaporators...................
61 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 target’s surface or by contact using a thermocouple probe. The Thermometer was designed specifically for use in heating, ventilating, and air conditioning (HVAC) applications.
561 HVACPro Users Manual Safety Information WWarning A Warning identifies conditions and actions that pose hazards to the user. To avoid electrical shock or personal injury, follow these guidelines: • * Do not point laser directly at eye or indirectly off reflective surfaces. • Before using the Thermometer inspect the case. Do not use the Thermometer if it appears damaged. Look for cracks or missing plastic. • Replace the batteries as soon as the battery indicator (B) appears.
Infrared Thermometer Features - LASER RADIATION AVOID EXPOSURE THIS APERTURE IS EMITTED FROM CAUTION LASER RADIATION - DO NOT STARE INTO BEAM 630 - 670nm WAVELENGTH OUTPUT < 1mW PRODUCT CLASS 2 (II) LASER FDA 21CFR COMPLIES WITH 1040.10 AND 1040.11 IEC 60825 COMPLIES WITH AVOID EXPOSURE - LASER RADIATION IS EMITTED FROM THIS APERTURE CAUTION LASER RADIATION - DO NOT STARE INTO BEAM OUTPUT < 1mW WAVELENGTH 630 - 670nm CLASS 2 (II) LASER PRODUCT COMPLIES WITH FDA 21CFR 1040.10 AND 1040.
561 HVACPro Users Manual Laser Display Trigger AA Batteries (2) Function Buttons Battery Cover efh007f.eps Figure 2. Infrared Thermometer 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 thermocouple temperature when a type-K thermocouple is attached.
Infrared Thermometer Buttons and Connector 1 2 8 3 4 5 7 6 efh01f.eps A B C D E F Laser “On” symbol G Temperature values for the MIN, MAX, DIF, KTC. KTC indicates the thermocouple temperature. H Low Battery symbol. Appears when the battery charge is < 25%. SCAN or HOLD °C/°F symbol (Celsius/Fahrenheit) Primary temperature display Secondary temperature display Emissivity LO, MED, HI Figure 3.
561 HVACPro Users Manual How the Thermometer Works Infrared thermometers measure the surface temperature of an opaque object. The Thermometer’s optics sense infrared energy, which is collected and focused onto a detector. The Thermometer’s electronics then translate the information into a displayed temperature reading which appears on the display. The laser is used for aiming purposes only. Operating the Thermometer The Thermometer turns on when you press the trigger.
Infrared Thermometer Operating the Thermometer 75 mm @ 900 mm 132 mm @ 1500 mm S 38 mm @ 300 mm 1.5 " @ 12 " 3"@ 36 " 5.3 " @ 60 " D D:S=12:1 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. See Figure 6. Yes No efh004f.eps Figure 6. Field of View Emissivity Emissivity describes the energy-emitting characteristics of materials.
561 HVACPro Users Manual Table 2.
Infrared Thermometer Operating the Thermometer Switch Figure 7. Switching Between °C and °F efh012f.eps Using the Contact Temperature Probe XWWarning To avoid electrical shock or personal injury, do not connect the optional external probe to live electrical circuits. Connect the probe to the input on the top of the Thermometer. The probe temperature and KTC appears in the secondary display. The live infrared temperature continues to show in the primary display.
561 HVACPro Users Manual Table 3 lists recommended Fluke temperature probes for use with the Thermometer: Table 3. Recommended Temperature 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, and for penetrating pipe insulation.
Infrared Thermometer Typical Measurements • • • • • The most likely conditions for condensation formation are low dry bulb temperature and high wet bulb temperature (low temperature, high relative humidity). Use the Fluke 971 to measure the attic/crawlspace relative humidity and determine the dew point temperature. This is the temperature at which condensation will form on the duct wrap. Use the thermocouple to measure the duct wrap surface temperature.
561 HVACPro Users Manual Testing Contactors (Starters) 1. 2. 3. 4. Press D to select emissivity. Press A to select LO for bright contacts, or MED for darkened contacts. Press Cand the press A to select MAX. Measure line and load side of one pole without releasing trigger. A temperature difference between the line and load sides of a pole indicate increased resistance of one point and a contactor may be failing. Testing Enclosed Relays 1. 2. 3. 4. 5.
Infrared Thermometer Typical Measurements Testing Bearings WWarning To avoid injury when testing bearings: • Do not wear loose clothing, jewelry, or anything around neck when working around moving parts such as motors, belts, blower, and fans. • Make sure an electrical disconnect is within reach and operating correctly and freely. • Do not work alone. Note It works best to compare two similar motors operating similar loads. 1. 2. 3. 4. 5. 6. 7. Press D and then press A to select HI emissivity.
561 HVACPro Users Manual wall you should find parallel isothermal rows indicating the location of heat tubes below the surface. Perpendicular to the outside wall, you should find rising and falling temperatures at equal distances. High temperatures indicate you are scanning a heat tube beneath the floor surface, low falling temperatures indicate a space between the heat tubes. 1. 2. 3. 4. Press D and then press A to select HI emissivity. Press C and then press A to select MIN.
Infrared Thermometer Typical Measurements • If system pressure has been increased above design settings, this can result in symptom of trap failure (stuck open). Check steam pressure. 1. 2. 3. 4. 5. 6. Press D and then press A to select HI emissivity for black iron pipe and painted traps. Press C and then press A to select DIF. Aim the Thermometer at the steam pipe. Scan steam pipe upstream of trap. Scan the steam trap. Scan downstream of trap on condensate return side.
561 HVACPro Users Manual • • All condenser return bend/hairpins should be at or slightly less than condenser saturation temperature. If a group of return bends/hairpins do not conform to expected temperatures, that indicates a blocked or restricted distributor or distributor tube. Checking Superheat on Fixed Restrictor or Capillary Tube Equipped Evaporators Note Superheat is a critical temperature. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
Infrared Thermometer Maintenance 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. Cleaning the Housing Use soap and water on a damp sponge or soft cloth. WCaution To avoid damaging the Thermometer, do NOT submerge it in water.
561 HVACPro Users Manual Specifications Infrared Measurement Range ................................................................-40 °C to 550 °C (-40 °F to 1022 °F) Spectral Range .........................................................................8 to 14 microns Accuracy...................................................................................± 1 % or ± 1 °C (2 °F); < 0 °C (32 °F), ± 1 °C (2 °F) ± 0.1°/1° (Assumes ambient operating temperature of 23 to 25 °C (73 to 77 °F)) Repeatability..
