Extech Instruments IR300UV Operation & User’s Manual
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Warnings
o
Do not directly or indirectly point the laser at the eyes
of a person or an animal
o
Inspect for damage or for any shortage of parts or
accessories before use
o
Replace the batteries immediately after the battery indicator flashes
o
Do not use the thermometer near explosive gases, steam, or dust
o
Note that an object with high reflectivity will normally cause the measured temperature value to read
much lower than the actual temperature
o
Use the device only as described in this User Guide
Cautions
To avoid thermometer damage, please avoid the following hazards:
o
EMF from welding equipment or electro‐induction heaters
o
Static electricity
o
Thermal shock caused by large or abrupt environmental temperature changes; wait 30 minutes to
allow the thermometer to stabilize to new environmental conditions
o
Do not use this device in excessively high temperature environments
EXTECH INSTRUMENTS
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Description
Meter Description
1. LCD Display
2. Multi‐Switch control
3. Battery Compartment
4. Laser pointer
5. White/Blue LEDs
6. IR sensor
7. Lens cover control
8. Measurement Scan Trigger
Display Description
Laser pointer active icon
Hold mode (displayed temperature freezes with trigger release)
Maximum/Minimum/Average temperature icons
Battery capacity indicator
White LEDs active
Temperature units (°F /°C)
Temperature Alarm icons
UV LEDs active
Emissivity setting
The Settings switch has five positions to select a parameter, turn a
parameter ON or OFF, and to adjust parameter values.
Press and release the Measurement Trigger.
Press the
button left to enter the Setting Mode. The
parameter selected will appear in the display.
Press the
button right to advance to the next parameter.
Press the up
or down
buttons to change a parameter status or adjust a parameter
value.
Press the
button to store parameter changes and advance to the next parameter.
Press the
button left to exit the Settings mode and return to Measurement mode.
Note: If no button is pressed within the APO time the meter will shut down. It may be helpful
to extend the APO time when making adjustments in the Settings mode.
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Setting Mode Detail
1.
Flashlight Setting
Enter the Setting mode. The
Flashlight icon flashes.
Press up
for ON or OFF. Press
to store the setting
2.
UV light Setting
Enter the Setting mode. Advance until the UV icon flashes.
Press up
for ON or OFF. Press
to store the setting
3.
Temperature Units Setting
Enter the Setting mode. Advance until the °F or °C icon flashes.
Press up
to change the units. Press
to store the setting
4.
Emissivity Setting
Enter the Setting mode. Advance until the EMS icon flashes.
Press up
or down
to adjust the setting. Press
to store the setting
5.
Laser Pointer Setting
Enter the Setting mode. Advance until the
icon flashes.
Press up
for ON or OFF. Press
to store the setting
6.
Max Min Avg Max‐Min Setting
Enter the Setting mode. Advance until the MAX – MIN AVG icon flashes.
Press up
for ON or OFF. Press
to store the setting
7.
Alarm HI Setting
Enter the Setting mode. Advance until the Alarm HI icon flashes.
Press up
or down
for ON or OFF. Press
to store the setting
If ON was selected, Press up
or down
to adjust the limit.
Press
to store the setting
8.
Alarm LO Setting
Enter the Setting mode. Advance until the Alarm LO icon flashes.
Press up
or down
for ON or OFF. Press
to store the setting
If ON was selected, Press up
or down
to adjust the limit.
Press
to store the setting
9.
Backlight Setting
Enter the Setting mode. Advance until the LItE icon flashes.
Press up
or down
for ON or OFF. Press
to store the setting
10. Auto Power OFF Setting
Enter the Setting mode. Advance until the APO icon flashes.
Press up
or down
to adjust the setting. Press
to store the setting
The laser pointer circle identifies the area being
measured. The size of the area is determined by the
distance to spot ratio. Objects outside the circle are
not measured. The spot measured should always be
larger than the circle for accurate measurements.
MAX, MIN, AVERAGE and MAX‐MIN
In the MAX MIN AVG mode the meter will record the Maximum value scanned, Minimum value
scanned, the Average of the scanned values and the Difference between the Max and Min value.
1. Turn Max Min ON in the settings mode
2. Press and hold the trigger to scan an area. Max, Min, Avg or Max‐Min
will be displayed in the lower right display. Press the up
button to
select the parameter to be displayed. The values will be continuously
updated for the length of the scan.
Note that measurements should normally be made further than 60cm (24 inches) from the
target. The meter can measure from further distances but the measurement may be affected by
external sources of light. In addition, the spot size may be so large that it encompasses surface
areas not intended to be measured.
2.5cm @ 30cm
5cm @ 60cm
10cm @ 120cm
1” @ 12”
2” @ 24”
4” @ 48”
It is necessary to ensure that the size of the target is larger than the spot size. The smaller the
target, the closer the distance should be.
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Emissivity
Emissivity represents the energy reflectivity of a material. Most organic materials and painted
or oxidized surfaces have an emissivity of approximately 0.95. If possible, masking tape or flat
black paint should be applied to cover the measured surface.
Wait a period of time to allow the tape or paint to reach thermal equilibrium with the surface
of the covered object. Measure the temperature of the surface covered with tape or paint only
after equilibrium has been achieved.
High Low Limits
The HI / LO limits provide an alarm when a preset temperature is exceeded.
Lens Cover
The lens cover protects the lens from dust when the meter is not in use. Always close the cover
when storing the meter.
Measurement Notes
1. The object under test should be larger than the spot (target) size calculated by the field of
view diagram.
2. If the surface of the object under test is covered with frost, oil, grime, etc., clean before
taking measurements.
3. If an object's surface is highly reflective apply masking tape or flat black paint to the surface
before measuring.
4. The meter may not make accurate measurements through transparent surfaces such as
glass.
5. Steam, dust, smoke, etc. can obscure measurements.
6. The meter compensates for deviations in ambient temperature. It can, however, take up to
30 minutes for the meter to adjust to extremely wide ambient temperature changes.
7. To find a hot spot, aim the meter outside the area of interest then scan across (in an up and
down motion) until the hot spot is located.
8. When the meter is held at the optimum distance from the target, the single laser dot will
appear at the top of the circular laser target. As long as the single laser dot is within the
circular laser target, the meter will make an accurate measurement.
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Maintenance
Cleaning
To clean the lens use compressed air to clear dust and other particles, then carefully clean with a
wet cotton swab. The cotton swab should be moistened with clean water.
To clean the meter housing, wipe with a damp, soft cloth. Do not use solvents or abrasives. Do
not immerse the IR300UV in water or other liquid.
Replacing Batteries
When the battery icon indicates a low battery, or when the meter
doesn’t switch ON, replace the batteries.
The battery compartment lid is located on the rear of the handle.
Remove the one Philips head screw and lift the lid off.
Replace the three 1.5V AA batteries following correct polarity and then
replace and secure the battery compartment lid.
Battery Safety Notes: Please dispose of batteries responsibly; never dispose of
batteries in a fire, batteries may explode or leak. If the meter is not to be used
for 60 days or more, remove the battery and store separately. Do not mix
battery types or freshness levels; please use batteries of the same type and of the same freshness level.
Never dispose of used batteries or rechargeable batteries in household waste.
As consumers, users are legally required to take used batteries to appropriate collection sites, the
retail store where the batteries were purchased, or wherever batteries are sold.
Disposal: Do not dispose of this instrument in household waste. The user is obligated to take end‐of‐life
devices to a designated collection point for the disposal of electrical and electronic equipment.
Specifications
Infrared Thermometer Specifications
Range / Resolution
‐30~500oC (‐22~932oF)
Accuracy
0°C: ±1.5°C or 1.5% of reading (whichever is greater)
32°F: ±3°F or 1.5% of reading (whichever is greater)
‐10°C to 0°C: ±2°C
14° to 32°F: ±4°F
Note: Accuracy is specified for the ambient temperature range:
21~25°C (70~77°F)
Response Time
500ms (95% of reading)
Repeatability (% of reading)
±8% of reading or ±1.0°C (1.8°F) whichever is greater
Emissivity
Adjustable from 0.10 to 1.00
Temp. Coefficient
0.1°C/°C or ±0.1%/°C of reading (whichever is greater)
Field of View
D/S = Approx. 12:1 ratio (D = distance, S = spot)
Laser power
Less than 1mW
Spectral response
8 to 14 microns
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