i-Quip I5771 User manual

Users Manual
I5771
Non-contact Infrared Thermometer
Read this manual thoroughly before use

1
This thermometer is a hand-held, professional non-contact infrared
thermometer. It is easy to use and features durable construction,
high accuracy, wide measurement range, laser sighting, backlight,
MAX/MIN/DIF/AVG temperature display, data hold, high and low
alarm, adjustable emissivity, and automatic power-off.
Features:
Precise non-contact measurements
High distance to target ratio ( D : S = 12 : 1 )
Wide measurement range: -50°C to 1350°C ( -58°F to 2462°F )
Durable construction
Built-in laser pointer
Automatic data hold
°C/°F switchable
Emissivity adjustable from 0.1 to 1.0
MAX, MIN, DIF, AVG temperature displays
Backlit display
Resolution: < 1000°C/°F: 0.1°C/0.1°F
1000°C/°F: 1°C/1°F
High and low alarm
Application:
Food, safety and fire inspections, plastic molding, watercraft, painting
and ink temperature checks, diesel maintenance, and etc.
INTRODUCTION

2
The infrared thermometer consists of optical system, photo detector,
signal amplifier, signal processing and display output system, and
etc. The optical system collects the infrared radiation energy of the
measured area, then this energy is focused onto the photo detector
and changed into electric signal, which is further converted into
temperature value shown on the display.
HOW THE THERMOMETER WORKS
Warning
To avoid possible personal injury, follow these guidelines:
1. Before using the thermometer, inspect the case. Do not use the
thermometer if it appears damaged. Look for cracks or missing
plastic.
2. When the low battery indicator () appears, replace the battery
immediately.
3. Do not use the thermometer if it operates abnormally. When in
doubt, have the thermometer serviced.
4. Do not operate the thermometer where explosive gas, vapor or
dust is present.
5. To avoid heat injury, please keep in mind that the measurement
result of the object with high emissivity may be lower than the
actual temperature of this object.
SAFETY INFORMATION

Cautions
The thermometer should be protected from the following:
1. Electro magnetic fields ( created by arc welders, induction heaters
and similar items. )
2. Thermal shock ( caused by large or abrupt ambient temperature
changes. Allow 30 minutes for the thermometer to stabilize before
use. )
3. Do not leave the thermometer on or near objects of high
temperature.
3
WAVELENGTH 630nm-670nm
As the distance (D) from the object being measured increases, the
spot size (S) of the area measured by the thermometer becomes
larger. This relationship between distance and spot size is normally
expressed as the distance to spot, or D:S ratio, which is shown in
FIELD OF VIEW
6. Do not point the laser beam toward anyone's eye or allow the
laser beam to strike the eye from a reflective surface.

4
Note:
Make sure that the object to be measured is larger than the
thermometer's spot size. The smaller the object, the closer you
should be to it.
When accuracy is critical, make sure that the object is at least twice
as large as the spot size.
Spot
Center
Distance
3"@36"2"@24"1"@12"
Distance to Spot size =12 : 1
the following figure. At a distance of 12 inches, the spot size would
be 1 inch in diameter. The thermometer will display the average
temperature across the spot area.

5
Temperature Range: -50°C to 1350°C ( - 58°F to 2462°F )
Accuracy:
Range Accuracy*
-50°C to - 20°C
-58°F to -4°F
± 5°C
-20°C to 200°C
-4°F to 392°F
392°F to 1000°F
1000°F to 2462°F
200°C to 538°C
538°C to 1350°C
± (1.5% of reading + 2°C)
± (2.0% of reading + 2°C)
± (3.0% of reading + 5°C)
± 9°F
± (1.5% of reading + 3.6°F)
± (2.0% of reading + 3.6°F)
± (3.0% of reading + 9°F)
Celsius
Fahrenheit
*Accuracy specification assumes that the ambient operating
temperature is 18°C to 28°C (64°F - 82°F) and the operating
relative humidity is less than 80%.
Response Time: < 1 sec
Spectral Response: 8µm to 14µm
Emissivity: Adjustable from 0.1 to 1.0 ( 0.95 default value )
Operating Environment:
Temperature: 0°C to 40°C
Relative humidity: 10% to 95% RH, noncondensing @ up to 30°C
Storage Temperature: -20°C to 50°C
Weight: about 325g ( including battery )
Size: 20.7 X 19.5 X 5.2cm
Battery: 9V battery, 6F22 or equivalent, 1 piece
Distance to Spot Ratio: 12 : 1
SPECIFICATION

6
1. IR Sensor
2. Laser Pointer
3. LCD Display
4. " " Button
5. " " Button
6. " MODE " Button
7. Handle
8. Built-in M6 Nut
9. Battery Cover
10. Measurement Trigger
11." " Button
Tip:
You can fix the thermometer on a suitable support which has a M6
bolt to be mated with the thermometer's built-in M6 nut ( " 8 " of
above figure).
1
2
3
4
5
6
9
11
7
10
STRUCTURE
8

7
1. Main display which shows the present reading or the last reading.
2. Data hold indicator which appears when the reading on the main
display is locked.
3. Measurement indicator which appears and flashes when the
thermometer is making measurement.
4. Emissivity display which shows the present emissivity setting
value. ( Tip: The symbol " " means " Emissivity ". )
5. Backlight indicator which appears when the backlight is on.
6. Temperature unit which applies to both the main display and
the bottom display.
7. Symbols used to indicate what kind of value is being displayed
LCD INSTRUCTION
2
3
4 5
6
7897
1
11
10

2
3
41
8
on the bottom display; for example, if the symbol " MAX "
appears, it means that the value on the bottom display is
maximum value.
8. Bottom display used to display maximum (MAX), minimum (MIN),
difference (DIF), average (AVG), high alarm value (HAL) and low
alarm value (LAL).
9. " " is high alarm icon, and " " is low alarm icon.
10. Low battery indicator. Replace the battery immediately when this
low battery indicator appears.
11. Laser function indicator which appears when the laser function is
enabled. When this indicator appears, the laser pointer will emit
laser beam if you pull the trigger.
BUTTON INSTRUCTIONS

9
1. " " Button
1. Used to change temperature value(s) from celsius value(s) to
fahrenheit value(s).
2. When setting emissivity ( ), high alarm value ( HAL ), or low
alarm value ( LAL ), press this " " button to increase the
value to be set.
2. " " Button
1. Press this " " button to turn on or off the backlight.
2. To enable or disable the laser function, press this " "
button while pulling and holding the trigger. When the laser
function is enabled, the symbol " " appears.
3. " " Button
1. Used to change temperature value(s) from fahrenheit value(s)
to celsius value(s).
2. When setting emissivity ( ), high alarm value ( HAL ) , or low
alarm value ( LAL ), press this " " button to decrease the
value to be set.
4. " MODE " Button
Each time you pull the trigger to make measurements, the
thermometer records the maximum (MAX), minimum (MIN), the
differential (DIF) between the maximum and the minimum, and
the average (AVG) of all readings taken during this pull. These
data are stored in memory and can be recalled with the MODE
button until you pull the trigger ( > 1 sec ) once more. When you
you pull the trigger ( > 1 sec ) once more, all these data will be
erased from memoryand the thermometer will start new recording.
When you pull the trigger, the reading on the main display will
change with the temperaturer of the target surface, and when you

10
Press " MODE " Button
Note:
1. To read value correctly, please observe the bottom display
carefully to see whether the negative sign " " and the decimal
point appear.
2. After you disconnect the battery from the thermometer for a while,
all the settings will be restored to default values and all the
recorded measurement data will be erased from memory.
release the trigger, the last reading is locked until you make new
measurement or the thermometer turns off automatically.
You can press the MODE button to display the maximum (MAX),
average (AVG), minimum (MIN), difference (DIF), low alarm value
(LAL) and high alarm value (HAL) sequentially on the bottom
display. The process is illustrated in the following diagram:

1. Hold the thermometer by its handle, and point it toward the
surface to be measured.
2. Pull and hold the trigger for at least 1 sec to turn on the
thermometer and make measurement, reading will be displayed
on the main display.
Note: Each time you pull the trigger, the pull must last at least 1
sec.
3. During measurement, the symbol " SCAN " will flash on the
display, and when you release the trigger, the measurement stops
and the symbol " HOLD " appears indicating that the last reading
is locked.
4. The thermometer will turn off automatically if you have not
operated the thermometer for about 30 secs.
Note:
1. Make sure that the target surface is larger than the thermometer's
spot size. The smaller the target surface, the closer you should be
to it ( see the " FIELD OF VIEW " section ).
When accuracy is critical, make sure the target is at least twice as
large as the spot size.
2. To find a hot or cold spot, aim the thermometer outside the
desired area. Then, slowly scan across the area with an up
and down motion until you locate the hot or cold spot. ( see the
figure on the next page )
BASIC MEASUREMENT PORUCEDURE
11

12
Measurement Considerations:
1. Laser beam is mainly used to locate far object. To save battery
power, you can disable the laser function when you measure near
object.
2. The thermometer can not measure through transparent surfaces
such as glass. It will measure the surface temperature of the
glass instead.
3. Steam, dust, smoke, etc., can prevent accurate measurement
by interfering with the energy emitted from the target.
Target Area
While
holding
trigger down
Setting the High Alarm and Low Alarm
1. After the thermometer has been turned on, press and hold down
the " MODE " button until the symbol " " flashes, then release
the button.
2. Press the " MODE " button until " LAL " appears and flashes, now
HOW TO SET THE THERMOMETER

13
the present low alarm value is being shown on the bottom display.
3. Press the " " button to decrease or the " " button to
increase the low alarm value.
Tip: You can press and hold down the " " or " " button
for fast adjustment.
4. After you finish setting the low alarm value, press the " MODE "
button. " HAL " flashes and the high alarm value is shown on the
bottom display. Use the same method of Step 3 to adjust the high
alarm value.
5. If the temperature of target surface reaches or is lower than the
low alarm value, " " will appear and flash and the built-in
buzzer will beep when you press and hold the trigger. If the
temperature of target surface reaches or is higher than the high
alarm value, " " will appear and flash and the buzzer will beep
when you press and hold the trigger.
6. At any time, you can press and hold down the " MODE " button to
exit setting mode.
Note:
1. To read value correctly, observe the bottom display carefully to
see whether the negative sign and decimal point appear.
2. Alarm accuracy is ± 1°C ( or ± 2°F ).
3. The low and high alarm values can be set only within the
thermometer's measurement range.
4. The high alarm value must be higher than the low alarm value.
Emissivity/Setting Emissivity
Emissivity describes the energy-emitting characteristics of materials.
Most ( 90% of typical applications ) organic materials and painted or

14
oxidized surfaces have an emissivity of 0.95 ( preset in the
thermometer ). Inaccurate readings will result from measuring shiny
or polished metal surfaces. To compensate, cover the surface to be
measured with masking tape or flat black paint. 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.
Emissivity Values
Water
Ice Lacquer (matt) Rubber (black)
0.92 - 0.96
0.96 - 0.98 0.97 0.94
Substance Emissivity Substance Emissivity
Asphalt
Concrete
Cement
Sand
Earth
Cloth (black)
Human skin
Lather
Charcoal
(powder)
Lacquer
0.90 - 0.98
0.94
0.96
0.90
0.92 - 0.96
0.98
0.98
0.75 - 0.80
0.96
0.80 - 0.95
Mortar
Brick
Copper oxides
Textiles
0.89 - 0.91
0.93 - 0.96 0.78 - 0.82 0.90
Marble
Plaster
Chromium
oxides
0.94
0.80 - 0.90
0.81
Snow Plastic
Glass
Ceramic Timber Paper
0.83
0.90 - 0.95
0.90 - 0.94
0.85 - 0.95
0.90
0.70 - 0.94
Iron oxides
0.78

15
The thermometers allow you to adjust the thermometer's emissivity
setting value so as to match the type of surface to be measured.
How to Set Emissivity
1. When the thermometer is on, press and hold down the " MODE "
button until the symbol " " flashes, then release the button.
2. Press the " " button to decrease or the " " button to
increase the emissivity setting value.
3. When you finish emissivity setting, press and hold down the
" MODE " button until the symbol " " stops flashing. The
thermometer returns to normal operation.
MAINTENANCE
To Clean 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. Don't use abrasive or solvent.
To Clean the Case:
Use soap and water on a damp soft cloth. Don't use abrasive or
solvent.
Note:
Do not immerse the thermometer in water, and do not let any liquid
enter the case.

16
When the symbol " " appears, the battery is low and should be
replaced immediately.
Wait until the thermometer turns off automatically, then open the
battery cover gently with thumb at the location indicated in the
following figure. Replace the exhausted battery with a new one of
the same type. Close the battery cover.
BATTERY REPLACEMENT
NOTE
1. This manual is subject to change without notice.
2. Our company will not take the other responsibilities for any loss.
3. The contents of this manual can not be used as the reason to use
the thermometer for any special application.
Open the battery
cover here.

DISPOSAL OF THIS ARTICLE
Dear Customer,
If you at some point intend to dispose of this article, then
please keep in mind that many of its components consist
of valuable materials, which can be recycled.
Please do not discharge it in the garbage bin, but check
with your local council for recycling facilities in your area.
17