EMISSIVITY
Emissivity is the relative ability of a surface to emit energy by radition. Each
type of surface (metal, brick, wood, etc.) has a different emissivity level
which must be accounted for when taking a measurement with an infrared
thermometer.
The INF225 has a variable emissivity from 0.10 to 1.00 which allows
accurate measurement of most types of materials. Shiny bright surfaces
(i.e. chrome, new copper, white boards) have a much lower emissivity
than flat black materials. The emissivity of the INF225 should be set
manually according to the chart below in order to obtain the most accurate
measurements. The chart is for guidance only, as the emissivity of objects
varies depending on surface finish, measurement wavelength, field of view,
temperature, and the shape of the object.
Material Emissivity
Asphalt 0.93
Red Brick 0.93
Gray Brick 0.75
Porcelain Ceramic 0.92
Fired Clay 0.91
Rough Concrete 0.94
Cotton Cloth 0.77
Smooth Glass 0.92-0.94
Granite 0.45
Gravel 0.28
Smooth Ice 0.97
Smooth White Marble 0.56
Black Paint 0.96
Hard Rubber 0.94
Wood 0.80-0.90
Matte Copper 0.22
Commercial Sheet Aluminum 0.09
Cold Rolled Steel 0.75-0.85
ACCURACY
Ambient
Temperature
77°F 59~95°F(15~35°C) ±1.8°F (1.0°C)
68~79°F (20~26°C) 32~1400°F
68~79°F (20~26°C)
K type
Thermocouple*
* Probe accuracy not specified
Target
Temperature Accuracy
(0~760°C)
-76~32°F
(-60~0°C)
-83~2552˚F
(-64~1400˚C)
±4°F (2°C)
±(4°F+0.1 degree/degree)
±(2°C+0.05 degree/degree)
±1% of Reading
or 1.8˚F (1.0˚C)
DISTANCE TO SPOT RATIO
The distance-to-spot ratio is a representation of how focused the IR sensor
is on the measurement area. The closer you are to the surface you are
measuring, the smaller the area of measurement is.
The INF225 has a 30:1 distance-to-spot ratio. This means that if you are
30 feet away from an air vent, the vent should be 1 foot or less in diameter
in order to resolve the most accurate measurement.
Below is an illustration of other example measurements.
Diameter at Spot
0.5”
15”
30”
60”
120”
1”
4”
2”
Distance to Object
DUAL LASER TARGETING
1”
30”
C˚/ F˚
Mode
Loc
k
BATTERY REPLACEMENT
1. Open the battery compartment by pulling the compartment lid at the
indentations, away from the trigger (see Thermometer Attributes
section).
2. Remove and recycle exhausted batteries.
3. Replace 2 x AAA alkaline batteries observing the polarity indicated
on the inside markings.
4. Return compartment lid and make sure it locks into place.
Dual (split) Laser
indicates the actual
target diameter
.
INF225
30:1 Dual Laser
Infrared Thermometer
Limited Warranty
The INF225 is warranted to be free from defe
workmanship for a period of three year from the date of purchase. If
within the warranty period your instrument should become inoperative
from such defects, the unit will be repaired or replaced at UEi’s option.
This warranty covers normal use and does not cover damage which
occurs in shipment or failure which results from alteration, tampering,
accident, misuse, abuse, neglect or improper maintenance. Batteries
and consequential damage resulting from failed batteries are not
covered by warranty.
Any implied warranties, including but not limited to implied warranties
of merchantability and fitness for a particular purpose, are limited
to the express warranty. UEi shall not be liable for loss of use of the
instrument or other incidental or consequential damages, expenses, or
economic loss, or for any claim or claims for such damage, expenses
or economic loss.
A purchase receipt or other proof of original purchase date will be
required before warranty repairs will be rendered. Instruments out of
warranty will be repaired (when repairable) for a service charge.
This warranty gives you specific legal rights. You may also have other
rights which vary from state to state.
PLEASE
RECYCLE
Copyright © 2013 UEi. All Rights Reserved
cts in materials and
17023 12/13
INF225
30:1 Dual Laser
Infrared Thermometer
INSTRUCTION MANUAL
&/(-*4)
C˚/ F˚
Mode
Lock
Find Quality Products Online at: sales@GlobalTestSupply.com
www.GlobalTestSupply.com
The UEi INF225 is a professional series infrared thermometer. It features
a wide measurement range, a tight distance-to-spot ratio, a K-type
thermocouple input, dual lasers, and several calculation modes to assist
you in making the best possible measurements.
UÊ Operating Altitude: 3000 meters
UÊ Relative Humidity: 10~90%, non-condensing
UÊ Operating Temperature: 32~122°F (0~50°C)
UÊ Storage Temperature: 14~140°F (-10~60°C)
UÊ Measurement Range: -76~1400°F (-60~760°C)
UÊ Emissivity: 0.10~1.00 adjustable
UÊ Optical Resolution (Distance: Spot): 30:1
UÊ Dimensions: 4.7 x 1.87 x 6.76”
UÊ Weight: 9.0 oz.
UÊ Battery Type: 2 x AAA alkaline batteries
UÊ Battery Life: 180 hours typical; 140 hours minimum with continuous
use (alkaline batteries, without laser and backlight)
UÊ Display Resolution: 0.1°~1.0°
UÊ Calibration: Accurate for one year
UÊ Laser: FDA and IEC Class II
UÊ Max Output: Less than 1mW
UÊ Wavelength: 635~660nm
UÊ Compliance: 21 CFR, Chapter 1, Subchapter J
UÊ Certifications: CE and RoHS
WARNINGS
To ensure safe operation and service of the tester, follow these instructions.
Failure to observe these warnings can result in severe injury or death.
UÊ Do not direct laser beam into eyes, as this can cause permanent
eye damage.
UÊ Do not use the instrument if the case is damaged in any way.
UÊ Replace the batteries as soon as low battery indicator appears.
UÊ Have the instrument serviced immediately if it is acting abnormally.
UÊ Be cautious of readings of reflective materials as they may be
indicated by the instrument as cooler than they actually are
(see Emissivity section).
UÊ Avoid using the instrument around strong electromagnetic fields.
UÊ Do not apply voltage to the thermocouple probe.
GENERAL SPECIFICATIONS
This instrument is designed for professionals who know the hazards
associated with their trade. While this instrument offers no foreseeable
dangers beyond its laser sight, the equipment you are servicing, as well
as the environment you're working in, can be hazardous. These are a few
common safety practices for those working around temperature critical
environments:
UÊ Follow the manufacturer's maintenance procedures when
servicing equipment.
UÊ Before using this instrument to determine if an area is safe to touch
or enter, verify your readings are reasonably accurate by comparison
with known measurements.
UÊ Properly maintain your infrared thermometer and calibrate
it regularly.
SAFE PRACTICES
SYMBOLS
Laser Warning or Caution
Follow safe disposal
procedures
Battery
Dangerous levels
THERMOMETER ATTRIBUTES
2
1
4
1. Trigger:
Initiates measurement.
2. Thermocouple Input:
Optional K-Type thermocouple
measurement.
3. IR Sensor:
Collects temperature data.
4. Battery Compartment:
Pops forward to store 2 x AAA batteries.
5. Dual Laser:
Provides an approximate target area for making measurements.
6. LCD Screen:
Displays measurement and additional information.
7. Mode Button:
Changes the mode of the secondary display
8. Down Button:
Changes temperature scale, decreases threshold, decreases
emissivity
, or toggles laser depending on the mode.
9. Up Button:
Enters auto-scan (trigger lock) mode, increases threshold, increases
emissivity
, or toggles backlight depending on the mode.
8
.
Temperature Measurement
To take measurements with your INF225, aim the instrument at the object
to be measured and pull the trigger. The unit has an auto off after releasing
the trigger of 60 seconds.
Targeting
The INF225 features a dual laser to assist in targeting the area to be
measured. The distance between the two lasers approximates the diameter
of the circular spot focused on by the infrared sensor. This area will
become larger as the target surface moves further away from gun (see
Distance to Spot Ratio for more information). The approximation will be
most accurate at a minimum distance of 30" from the INF225.
3
5
6
7
9
Selecting Temperature Scale
Press the Down Key while in display mode or any measurement mode
to alternate between Fahrenheit and Celsius. You can select either scale
during or after measurement, and when viewing any of the held values.
Lock Mode (Auto-Scan)
In lock mode, the INF225 will take measurements continously without
holding down the trigger. The trigger can be held down to activate the laser,
but is not required.
Auto Hold
The INF225 will hold the last temperature measured for 60 seconds after
the trigger is released. To recall this value or associated calculations press
the MODE key to activate the display and show the held temperature.In
probe mode, the unit will automatically power off after 12 minutes. In autoscan mode, the unit will automatically power off after 60 minutes.
Toggling Laser & Backlight
To toggle the laser, hold down the trigger and press the Down Key. To
toggle the backlight, hold down the trigger and press the Up Key.
Thermocouple Probe Mode
The INF225 can measure the temperature from a K-Type thermocouple
probe. Press the mode key to enter Probe Mode. The measured
temperature will automatically be displayed. To see the minimum or
maximum temperature taken by the probe, press and hold the Down Button
or Up Button, respectively.
LCD SYMBOLS
Laser is active
The backlight is on.
The last measurement taken is being shown.
The thermometer is currently taking measurements.
Auto-scan mode is active.
Celsius or Fahrenheit temperature scale.
Battery is OK.
Battery is low and should be replaced.
Battery is exhausted. Replacement necessary before use.
OPERATING INSTRUCTIONS
The temperature being measured has exceeded the allowable
range.
The temperature being measured is greater than the high
alarm (HAL) setting or lower than the low alarm (LAL) setting.
Rapid changes in ambient temperature detected. Please wait
a minimum of 30 minutes between large ambient temperature
changes before use.
The ambient temperature has exceeded the allowable range.
Any other error requires the thermometer to be reset. Turn off
the thermometer, remove the batteries, wait one minute, then
reinsert the batteries.
OPERATION MODES
The INF225 has several modes of operation. Press the "Mode" button to
cycle through modes. The following chart shows the mode name, the
screen identifier, and the function of the auxiliary buttons in the mode.
Mode Screen Down Key Up Key
A
Display
B
Emissivity adjust
C
Maximum reading
D
Minimum reading
E
Difference
F
Average
G
High Alarm
H
Low Alarm
I
K-Type Probe
A. Shows the emissivity.
B. Allows adjustment of the emissivity. See Emissivity section..
C. Shows the maximum reading taken while the trigger is held down.
D. Shows the minimum reading taken while the trigger is held down.
E. Shows the difference between the highest and lowest measurements
taken while the trigger is held down.
F. Shows the average of all readings taken while the trigger is held
down.
G. Sets the threshold for an alarm that will sound whenever the
measured temperature is greater than the alarm threshold.
H. Sets the threshold for an alarm that will sound and flash whenever
the measured temperature is less than the alarm threshold.
I. Shows the temperature reading of an attached K-Type thermocouple.
°F ļ °C Auto-scan
Decrease
Increase
emissivity
emissivity
°F ļ °C Auto-scan
°F ļ °C Auto-scan
°F ļ °C Auto-scan
°F ļ °C Auto-scan
Decrease
Increase
threshold
threshold
Decrease
Increase
threshold
threshold
Show
Show
minimum
maximum
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