Fluke Thermometer 561s User Manual

®
561  
Infrared Thermometer  
Users Manual  
PN 2562924  
February 2006 Rev. 3, 4/08  
© 2006-2008 Fluke Corporation, All rights reserved. Printed in China. Specifications are subject to change  
without notice. All product names are trademarks of their respective companies.  
 
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  
Maintenance .............................................................................. 10  
Changing the Battery.............................................................. 10  
Cleaning the Lens................................................................... 10  
Cleaning the Housing ............................................................. 10  
Troubleshooting ......................................................................... 11  
CE Certification .......................................................................... 11  
Specifications............................................................................. 11  
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561  
Users Manual  
ii  
 
561  
Infrared Thermometer  
Introduction  
The Fluke 561 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. This manual covers all versions  
of the the Fluke 561. Note that the Japanese models indicate Celsius only.  
Contacting Fluke  
To contact Fluke, call one of the following telephone numbers:  
USA: 1-888-44-FLUKE (1-888-443-5853)  
Canada: 1-800-36-FLUKE (1-800-363-5853)  
Europe: +31 40 267 5200  
Japan: +81-3-3434-0181  
Singapore: +65-738-5655  
Anywhere in the world: +1-425-446-5500  
For USA Service: 1-888-99-FLUKE (1-888-993-5853)  
Or, visit Fluke's Web site at www.fluke.com.  
To register your product, visit http://register.fluke.com.  
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561  
Users Manual  
Safety Information  
XWWarning  
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.  
Do not use the Thermometer if it operates abnormally. Protection may be  
impaired. When in doubt, have the Thermometer serviced.  
Do not operate the Thermometer around explosive gas, vapor, or dust.  
Do not connect the optional external probe to live electrical circuits.  
To avoid a burn hazard, remember that highly reflective objects will often  
result in lower than actual temperature measurements.  
If the Thermometer is used in a manner not specified by the manufacturer, the  
protection provided by the Thermometer may be impaired.  
WCaution  
To avoid damaging the thermometer or the equipment under test protect them  
from the following:  
EMF (electro-magnetic fields) from arc welders, induction heaters, etc.  
Static electricity.  
Thermal shock (caused by large or abrupt ambient temperature changes-  
allow 30 minutes for the Thermometer to stabilize before use).  
Do not leave the Thermometer on or near objects of high temperature.  
Table 1 and Figure 1 show various symbols and safety markings that are on the Thermometer  
and in this manual.  
Table 1. Symbols  
Symbol  
W
Explanation  
Risk of danger. Important information. See Manual.  
Hazardous voltage. Risk of electrical shock.  
Warning. Laser.  
X
*
Conforms to requirements of European Union and European Free  
Trade Association (EFTA).  
P
~
B
Do not dispose of this product as unsorted municipal waste. Go to  
Fluke’s web site for recycling information.  
Battery  
China metrology certification mark for measuring instruments  
manufactured in the Peoples Republic of China (PRC).  
2
 
 
Infrared Thermometer  
Features  
N
A
TIO  
E
TUR  
PER  
R
R
ADI  
E
M
-
L
ASE  
IS  
SUR  
E
XPO  
TED  
E
MIT  
ID  
AVO  
IS  
A
TH  
FRO  
UTION  
TIO  
R
ADIA  
TO  
BEAM  
CA  
IN  
S
T
AR  
E
N
OT  
N
-
D
O
ER  
LAS  
n
m
-
6
70  
H
63  
0
NGT  
ELE  
WAV  
1mW  
ER  
<
PUT  
OUT  
CLA  
T
DUC  
PRO  
(II) LAS  
SS  
2
R
1CF  
2
F
DA  
S
W
ITH  
D
PLIE  
COM  
1
10  
40.1  
W
AN  
0.10  
104  
60  
8
25  
C
ITH IE  
S
PLIE  
COM  
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 1040.11  
COMPLIES WITH IEC 60825  
efh010f.eps  
Figure 1. Symbols and Safety Markings  
Features  
The Thermometer includes:  
Single-spot Laser Sighting  
Backlit Display  
Hard Case  
Current Temperature Plus MIN, MAX, DIF Temperature Displays  
Easy Emissivity Selector  
Type-K Thermocouple  
Two AA Batteries  
Thermometer features are shown in Figure 2.  
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561  
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. When a thermocouple is not connected, the small temperature  
display reports a choice of maximum, minimum, or difference between maximum and minimum  
temperature.  
You can toggle through the minimum, maximum, and difference IR temperatures anytime the  
display is on. The MIN, MAX, and DIF temperatures are constantly calculated and updated  
when the trigger is pressed. After the trigger is released, the MIN, MAX, DIF temperatures are  
held for 7 seconds.  
Note  
When the battery is low, B appears on the display.  
The last selection (MIN/MAX/DIF) is maintained on the secondary display even after the  
Thermometer has been turned off, providing the batteries have not failed.  
4
 
 
Buttons and Connector  
2
1
3
4
8
5
7
6
efh01f.eps  
A
B
C
D
E
F
Laser “On” symbol  
SCAN or HOLD  
°C/°F symbol (Celsius/Fahrenheit)  
Primary temperature display  
Secondary temperature display  
Emissivity LO, MED, HI  
Temperature values for the MIN, MAX, DIF, KTC.  
KTC indicates the thermocouple temperature.  
G
H
Low Battery symbol. Appears when the battery charge is <25 %.  
Figure 3. Thermometer Display  
Buttons and Connector  
Button/  
Connector  
Description  
PressC and then press  
to toggle between the MIN,  
A
C
MAX, and DIF options.  
The  
button is used to show the MIN, MAX, and DIF  
A
functions in the secondary display, whichever was pressed  
most recently.  
A
Selects the emissivity setting. You can toggle between LO  
D
(0.3), MED (0.7), or HI (0.95) using  
.
A
K-type thermocouple probe used to make contact  
temperature measurement.  
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561  
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. The Thermometer turns off when no  
activity is detected for 7 seconds.  
To measure temperature, aim the Thermometer at the target, pull and hold the trigger. Release  
the trigger to hold a temperature reading.  
Be sure to consider distance-to-spot size ratio and field of view. The laser is used for aiming  
only.  
Locating a Hot or Cold Spot  
To find a hot or cold spot, aim the Thermometer outside the target area. Then, slowly scan  
across the area with an up and down motion until you locate the hot or cold spot. See Figure 4.  
efh014f.eps  
Figure 4. Locating a Hot or Cold Spot  
Distance and Spot Size  
As the distance (D) from the target being measured increases, the spot size (S) of the area  
measured by the unit becomes larger. The spot sizes indicates 90 % encircled energy. The  
maximum D:S is obtained when the Thermometer is 900 mm (36 in) from the target resulting in  
a spot size of 75 mm (3 in). See Figure 5.  
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Operating the Thermometer  
132 mm @  
1500 mm  
75 mm @  
900 mm  
S
38 mm @  
300 mm  
5.3 " @  
60 "  
3 " @  
36 "  
1.5 " @  
12 "  
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.  
No  
Yes  
efh004f.eps  
Figure 6. Field of View  
Emissivity  
Emissivity describes the energy-emitting characteristics of materials. Most organic materials  
and painted or oxidized surfaces have an emissivity of about 0.95.  
If possible, to compensate for inaccurate readings that may result from measuring shiny metal  
surfaces, cover the surface to be measured with masking tape or flat black paint  
(<148 °C/300 °F) and use the high emissivity setting. Allow time for the tape or paint to reach  
the same temperature as the surface beneath it. Measure the temperature of the tape or  
painted surface.  
If you cannot paint or use tape, then you can improve the accuracy of your measurements with  
the emissivity selector. Even with the emissivity selector, it can be difficult to get a completely  
accurate infrared measurement of a target with a shiny or metallic surface. Experimentation,  
using the probe to determine benchmark temperatures, and experience will help you choose the  
best setting for specific measurements.  
The Thermometer has three emissivity settings: low (0.3), medium (0.7), and high (0.95). Refer  
to Table 2. The reference to emissivity settings in the table are suggestions for typical  
situations. Your particular situation may differ.  
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Users Manual  
Table 2. Surface Emissivity  
Measured  
Measured  
Surface  
Switch Setting  
Switch Setting  
Surface  
Aluminum  
Oxidized  
Alloy A3003  
Oxidized  
Roughened  
Brass  
Iron, Cast  
Low  
Oxidized  
Unoxidized  
Molten  
High, Medium  
Low  
Low  
Low  
Low  
Iron, Wrought  
Dull  
High  
Burnished  
Oxidized  
Copper  
Low  
Low  
Lead  
Rough  
Low  
Oxidized  
Molybdenum  
Low, Medium  
Oxidized  
Medium  
Medium  
Electrical Terminal  
Blocks  
Oxidized  
Low, Medium  
Haynes  
Alloy  
Nickel  
Medium  
Oxidized  
Platinum  
Black  
Low  
Inconel  
Oxidized  
Sandblasted  
Electoropolished  
Iron  
High, Medium  
Medium  
Low  
High  
Steel  
Cold-Rolled  
Ground Sheet  
Polished Sheet  
Zinc  
High  
Medium  
Low  
Oxidized  
Rusted  
High, Medium  
Medium  
Oxidized  
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
 
 
Operating the Thermometer  
Switch  
efh012f.eps  
Figure 7. Switching Between °C and °F  
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. Connect the temperature probe as shown in Figure 8.  
Note  
With the probe inserted, the Thermometer stays on for 10 minutes (with laser off)  
after the trigger is released.  
efh009f.eps  
Figure 8. Connecting the Temperature Probe  
9
 
 
561  
Users Manual  
Table 3 lists recommended Fluke temperature probes for use with the Thermometer:  
Table 3. Recommended Temperature Probes  
Probe  
Usage  
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.  
80PK-25  
The general purpose bead probe is an alternative, for quick, accurate surface  
temperatures and air temperatures within ducts, vent temperatures.  
80PK-1  
80PK-8  
Pipe clamp probes (2) are essential for tracking continuously changing  
temperature differentials on hydronic tubing and pipe loops, and good for  
quick, accurate refrigerant temperatures.  
The tapered probe is a good general-purpose gas and surface probe, with a  
good length and low mass tip casing for faster reaction to surface and air  
temperatures.  
80PK-26  
The insulation piercing probe provides a sharp tip to pierce pipe insulation  
and flat probe tip for good surface thermal contact, air temperatures within  
ducts, and vent temperatures.  
80PK-9  
The Velcro pipe probe is a convenient way to attach a thermocouple to a  
pipe while keeping hands free.  
80PK-11  
HOLD  
The display will remain activated for 7 seconds after the trigger is released. HOLD appears in  
the upper middle of the display. When the trigger is pulled again, the Thermometer will begin  
measuring in the last function selected.  
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.  
10  
 
 
Troubleshooting  
Troubleshooting  
Symptom  
Problem  
Action  
--- (on display)  
Target temperature is over or  
under range  
Select target within  
specifications  
B
Low battery  
Replace battery  
Blank display  
Possible dead battery  
1. Low or dead battery  
Check and/or replace battery  
1. Replace battery  
Laser does not  
work  
2. Ambient temperature above  
40 °C (104 °F)  
2. Use in area with lower  
ambient temperature  
CE Certification  
The Thermometer conforms to the following standards:  
EN61326-1 EMC Standard  
EN61010-1 Safety Standard  
EN60825-1 Laser Standard  
Certification testing was conducted using a frequency range of 80 to 1000 MHz with the  
instrument in three orientations.  
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................................................................. 0.5 % of reading or 1 °C (2 °F)  
Display Resolution........................................................ 0.1 °C (0.1 °F)  
Secondary Display Information..................................... Maximum, Minimum, Differential,  
KTC  
Response Time (95 %)................................................. 500 ms  
Distance to Spot (D:S).................................................. 12:1  
Emissivity Adjustment................................................... Three settings: low (0.3), medium  
(0.7), high (0.95)  
Contact Probe Input  
Input Temperature Range ............................................ -40 °C to 550 °C (-40 °F to 1022 °F)  
Input Accuracy...............................................................................Input accuracy 1.1 °C ( 2 °F)  
Display Resolution........................................................ 1 °C (1 °F)  
Laser  
Sighting ........................................................................ Single point laser  
Power........................................................................... Class 2 (II) operation; Output <1 mW,  
wavelength 630 to 670 nm  
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Users Manual  
Wrap Thermocouple Probe (model-specific)  
Type..............................................................................Type K with miniconnector and  
Velcro strap, ASTM E230-03  
Standard Tolerance  
Measurement Range ....................................................0 °C to 100 °C (32 °F to 212 °F)  
Accuracy....................................................................... 2.2 °C (4.0 °F)  
Total Length..................................................................505 mm (20 in) cable terminated with  
a Type K thermocouple inside a  
495 mm (19.5 in) nylon Velcro cuff  
Bead Thermocouple Probe (model-specific)  
Type..............................................................................Type K with miniconnector  
Measurement Range .................................................... -40 °C to 260 °C (-40 °F to 500 °F)  
Accuracy....................................................................... 1.1 °C (2.0 °F) from 0 °C to 260 °C  
(32 °F to 500 °F). Typically within  
1.1 °C  
(2.0 °F) from -40 °C to 0 °C  
(-40 °F to 32 °F)  
Cable Length ................................................................1 m (40 in) terminated with Type K  
thermocouple beads  
Electrical  
Power Supply................................................................2 AA Batteries (alkaline or NiCD)  
Power Consumption......................................................At least 12 hours battery life  
Physical  
Weight...........................................................................0.322 kg (0.7099 lb)  
Size...............................................................................17.69 cm (6.965 in) x 16.36 cm  
(6.441 in) x 5.18 cm (2.039 in)  
Environmental  
Operating Temperature Range .....................................0 °C to 50 °C (32 °F to 120 °F)  
Relative Humidity..........................................................0 to 90 %, noncondensing up to  
30 °C (86 °F)  
Storage Temperature....................................................-20 °C to 65 °C (-4 °F to 150 °F)  
Optional Accessories ....................................................Soft Case  
12  
 

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