Optex PT-7LD User manual

THERMO-HUNTER
PT-7LD
OPTEX FA CO.,LTD.
91 Chudoji-Awata-cho Shimogyo-ku Kyoto 600-8815 JAPAN
TEL: [phone] FAX: [phone]
Printed in JAPAN 0806980 2018/6
Portable Non-Contact Thermometer
Instruction Manual

Introduction
• Please make sure the model you purchased is the one you specified.
• Please read the manual thoroughly before using theTHERMO-HUNTER
PT-7LD for correct usage.
• After reading this manual, please retain it for future reference.
• OPTEX is not liable for any incidental or consequential damages or
losses including losses of data or chances of measurement, arising
from accident, misuse or abnormal conditions of operation or handling.
Contents
Introduction
····················································································
Safe Usage
····················································································
Warnings & Cautions on Environment and Usage
·······························
Specifications
·················································································
Name of Components
·······································································
Operation
·······················································································
Normal Measurement / Continuous Measurement
·······························
Field of View
···············································································
Memory Function
·········································································
Settings
·························································································
Setting "High Limit Temperature for Alarm"
·········································
Setting "Low Limit Temperature for Alarm"
··········································
Setting "Emissivity Ratio (HOT / COLD mode)"
···································
Setting "˚C / ˚F mode"
····································································
"Record Erasing"
··········································································
Troubleshooting
···············································································
Maintenance / Battery
·······································································
2
3
4
5
6
8
8
9
10
11
12
13
14
14
14
15
16
2
Conformance to EU Directives
・This is a class A product. In residential areas it may cause radio interference,
in which case the user may be required to take adequate measures to reduce
interference.
Thank you very much for purchasing this product. This device is a non-contact hermome-
ter to convert the infrared energy emitted from the surface of an object into temperature.
This thermometer measures the surface temperature of solid and liquid without contacting
them. The temperature of gas cannot be measured by this is thermometer.

This product is not a clinical thermometer
and therefore, can not be used for medical
purposes.
Do not look into the laser beam, nor point it
directly at eyes. Even the reflection is
harmful. This laser may cause eye injury or
damage to your health.
Use of controls or adjustments or perfor-
mance of procedures other than those
specified herein may result in hazardous
radiation exposure.
Safe Usage
This instruction manual contains various warnings for your safety and proper usage to
avoid possible personal injury. Please be sure to heed the warnings and strictly follow
safety instructions.
！ CAUTION：
This symbol signifies that improper usage may
result in injuries or damage.
！ CAUTION
！ CAUTION
！ CAUTION
3

Safe Usage
–– Warnings & Cautions on Environment and Usage
Environmental Warnings / Cautions –– Warning –– Caution
KEEP THE THERMOMETER
AWAY FROM DROPPING WATER
AND DO NOT USE IN WATER.
KEEP THE THERMOMETER
AWAY FROM DIRECT SUNLIGHT,
DUST, HIGH TEMPERATURES
AND HIGH HUMIDITY DURING
USE AND STORAGE.
This may cause irreparable damage or
incorrect measurement.
e.g. Leaving the thermometer in a car
under a burning sun for long may result
in damage as it will get hot inside the car.
Usage Warnings / Cautions –– Warning –– Caution
4
DO NOT EXPOSE THE THER-
MOMETER TO SUDDEN TEM-
PERATURE CHANGES.
Sudden temperature changes may
cause incorrect measurement.
Leave the thermometer for a while
to let it reach stable temperature
before taking measurement.
AVOID MEASURING SHINY OB-
JECTS.
DO NOT USE ANY BATTERY
OTHER THAN SPECIFIED.
This may cause irreparable dam-
age or incorrect measurement.
DO NOT TOUCH THE FILTER.
Do not touch the filter with some-
thing hard or things with sharp
points, which may damage the fil-
ter. Damaged filter causes incor-
rect measurement.
KEEP THE THERMOMETER
AWAY FROM CHARG ED OB-
JECTS.
This may cause irreparable dam-
age or incorrect measurement.
This product has shock resistant
structure to survive under normal
usage, but throwing or falling the
unit intentionally with force may
cause irreparable damage.
Usage in such environments may
cause irreparable damage or in-
correct measurement.
DO NOT OPERATE THE THERMO-
METER NEAR LARGE ELECTRO-
MAGNETIC FIELDS.
Shiny objects reflect surrounding
infrared energy.
Therefore, it results in incorrect
measurement.
DO NOT DROP THE THERMO-
METER OR APPLY VIOLENT
SHOCKS.
The unit is a non-contact thermo-
meter. Touching or getting too close
to the objects with high temperatures
may cause irreparable damage or
incorrect measurement.
DO NOT LET THE THERMO-
METER TOUCH THE OBJECT
THAT IS BEING MEASURED.
correct measurement. Wipe up the
filter and the area around it completely
before taking measurement.
This sthermometerhas waterproof-
ing, but it cannot be operated in the
water. Water drops on the filter or
the area around it maycause in-

Accessories : Quick Reference Card, Instruction Manual (This book)
Option : Black body tape
Specifications
5
Model
Measurement range
Display range
Field of view φ25 / 300 mm (D:S = 15:1)
Mirror / silicon filterOptics
Thermopile
Sensing element
8 to 14μｍSpectral response
0.7 Sec. / 90%Response time
Accuracy（
ε≒ 0.95）
－30.0 to 0℃：±3.0℃、0.1 to 100.0℃：±1.0℃、100.1 to 200.0℃：±2.0℃
±1℃ of reading valueRepeatability
0.1℃
Display resolution
Non-coaxial laser marker (CLASS 2)Sighting method
15 secondsHOLD time
ON/OFF SwitchableContinuous measurement mode
99-point memoryMemory
High/Low Limit Temp. for Alarm LED/Buzzer
Emissivity（ ）Adjustment
εHOT（0.95）/ COLD（0.85）Switchable
9V alkaline battey, 6LR61/6LF22 (1 piece)Power supply
Battery life
0 to 50℃Ambient temperature
35% to 85％Rh（Without due condensation）Ambient humidity
－10 to 60℃Storage temperature
IP67Protective structure
ABS (Antibacterial)Material
HｘWｘD＝160ｘ44ｘ42mmDimension
200g (Incl. Battery)
EMC Directive(2014/30/EU),RoHS Directive(2011/65/EU),China RoHS(MIIT Order No.32)
FDA (21 CFR 1040.10 and 1040.11) (expect for deviations pursuant to Laser Notice No.50)
Consumer product safety Act.(PSC Mark)
EN 61326-1:2013, IEC 60825-1:2007,2014
Weight
Applicable regulations
Applicable standards
12 Hours (With max load)
－30.0 to 200.0℃
－40.0 to 220.0℃
PTー7LD
ON/Off Switchable
※2
※1
※1 The measurement accuracy in the specification is limited to the calibration conditions of our factory.
※2 This product is classified as Class 2 by IEC 60825-1: 2007 according to Laser Notice No.50, FDA Guidance Document.
For China RoHS, please refer to http://www.optex-fa.com/rohs_cn/

* There is no button to turn ON/OFF the power supply.
Pressing MEASURE button wakes up the thermometer.
The power supply turns off automatically after 15 seconds' absence of pressing any button.
Name of Components
6

7

Operation
Normal Measurement
[Starting Normal Measurement]
Press MEASURE button to turn on the power supply. A laser
beam is emitted and the measurement starts. (In the Normal
Measurement mode, the unit takes measurements while
MEASURE button is pressed.)
Point the laser beam at a measuring object and aim it at the
center of the area to be measured. For the distance from this
thermometer to the measuring object, refer to page 9.
In the Normal Measurement mode, the measurement indication
" " is shown on the LCD display and a laser indicator blinks.
[Quitting Normal Measurement / HOLD mode]
Release MEASURE button. Then, the laser beam turns off and
a value measured last is displayed for 15 seconds (HOLD mode).
The power supply turns off automatically after 15 seconds.
Continuous Measurement
[Starting Continuous Measurement]
Press and hold both of MEASURE button and SET/ENTER button simultaneously for two seconds or
more, then the Continuous Measurement mode switched on. (In the Continuous Measurement mode, the
thermometer keeps measuring temperatures without pressing MEASURE button.)
During the Continuous Measurement mode, LCD display shows
"".
[Quitting Continuous Measurement]
To quit the Continuous Measurement mode, press and hold SET/ENTER button for two seconds or
more. Then, it switches to HOLD mode. The power supply turns off automatically after 15 seconds
in the HOLD mode.
Set the battery supplied as an accessory and operate the unit according to the following procedure:
8
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








For the non-contact thermometer (infrared thermometer), the field of view (spot size) is specified
depending on the distance from the thermometer to the measuring object as shown below. The
temperature value displayed is the average temperature within the spot size. To take an accurate
measurement, check the correlation between the size of object and the distance to it.
[Field of View]
* Remarks
ex.) The average temperature of surface of the circle 25 mm in diameter is measured at a distance of 300 mm
away from the measuring object.
* The laser beam points 13mm off to the left from the center of the field of view. The laser marker functions as a
sighting method and not a sensing element.
* It is possible to take temperatures with this thermometer at a distance of 1,000 mm or more away from the
measuring object, unless there is any obstacle. However, please note that the measuring field of view enlarges
in proportion to the measuring distance. This thermometer has an optical resolution of 15:1 [D(Distance to the
measuring object):S(Spot size)].
[For Correct Measurement]
The optical resolution values stated in "Field of View" are at minimum 90% energy. The size of measuring object
should be sufficiently larger than the field of view (spot size) shown in the above illustration.
Note. If any water drop is on the filter and/or the area around it, the thermometer measures temperature
of the water drop, which results in incorrect measurement. Wipe up the filter and the area around
it completely before taking measurement. (See "Maintenance" on page 16)
Field of View
9
OK NG
INCORRECT
CORRECT
The measuring object is bigger
than the field of view.
The measuring object is smaller
than the field of view.
The temperature of background
influences on the measuring value.

Memory Function
[Recording / MEM. mode]
Press and hold MEM./ button for two seconds or more to record the tem-
perature value displayed at the time when you start pressing the button. Memory
function is available in Normal Measurement mode, Continuous Measurement
mode or HOLD mode (refer to page 8).
When the temperature data is recorded, "MEM" sign and the
memory number (01 to 99) on LCD display blink.
A maximum of 99 points of temperature data can be recorded
in the memory.
When you try to enter the memory over 100 points, the dis-
play shows "FULL".
[Recalling / CALL Mode]
Press and hold CALL/ button for two seconds or more in
HOLD Mode (refer to page 8), and "CALL" sign appears on the
LCD display. In CALL (recalling) mode, the last record of tem-
perature data and the corresponding memory number are shown
on the display.
By pressing MEM./ or CALL/ button, you can select the
memory number to show the stored temperature value corre-
sponding to the memory number.
To quit CALL mode, press SET/ENTER or MEASURE button.
You can enter HOLD mode by pressing SET/ENTER button, or
Normal Measurement mode by pressing MEASURE button.
* To erase all the stored records, see "Record Erasing" on page 14.
The non-contact thermometer PT-7LD can store 99-point temperature data in memory. Operate
according to the following procedure:
10
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


Settings
[Selecting Functions]
Press and hold SET/ENTER button for one second or more in
the HOLD Mode (refer to page 8), and "SET" sign appears on
the LCD display. (Function selecting mode follows.)
By pressing CALL/ or MEM./ button, you can select func-
tions as shown in the right illustrations.
When the name of the function you desire appears on the dis-
play, press SET/ENTER button to set. Then, you can enter the
detailed setting mode.
"High Limit Temperature for Alarm" setting, refer to page 12.
"Low Limit Temperature for Alarm" setting, refer to page 13.
"Emissivity Ratio (HOT/COLD mode)", "˚C/˚F mode" and
"Record Erasing" settings, refer to page 14.
When each setting is completed, it automatically turns to the
next setting mode. (For example, when setting of "High Limit
Temperature for Alarm" is completed, it comes to the setting
mode for "Low Limit Temperature for Alarm".)
To quit the setting mode, press MEASURE button.
This section gives you an explanation on how to set the following functions: "High Limit Temperature
for Alarm", "Low Limit Temperature for Alarm", "Emissivity Ratio (HOT/COLD mode)", "˚C/˚F mode"
and "Recorded Erasing".
11
Setting mode for "High Limit
Temperature for Alarm"
Setting mode for "Low Limit
Temperature for Alarm"
Setting mode for
"Record Erasing"
Setting mode for "Emissivity
Ratio (HOT/COLD mode)"
Setting mode for "˚C/˚F
mode"






When any temperature higher than a preset value is measured, an alarm LED (red) turns on and an
alarm bell (high tone) goes off.
[Setting "High Limit Temperature for Alarm"]
Enter the setting mode for "High Limit Temperature for Alarm"
according to the procedure described in page 11. The initial
setting is at 200.0 ˚C.
Press or button in the setting mode to change the
temperature vale, which your need alarm at.
Press SET/ENTER button to set the displayed value as the
High Limit Temperature for Alarm.
Attention:The "High Limit Temperature for Alarm" cannot be
set at lower temperature than "Low Limit Tempera-
ture for Alarm".
[Turning ON/OFF Alarm Function]
When the High Limit Temperature setting is completed, the
setting mode for ON/OFF Alarm Function appears. Press
.or button to select ON or OFF.
Press SET/ENTER button to set ON or OFF. While the Alarm
function is OFF, the Alarm function does not work even if the
measuring temperature goes higher than a preset level.
Setting mode for
"High Limit Temperature for Alarm"
(Initial setting: 200.0 ˚C)
Setting
–– "High Limit Temperature for Alarm"
12
Changing the temperature value to
120.0 ˚C by using
/
button.
Setting the temperature value with
SET/ENTER button.
Alarm function: ON
Alarm function: OFF






When any temperature lower than a preset value is measured, an alarm LED (green) turns on and an
alarm bell (low tone) goes off.
[Setting "Low Limit Temperature for Alarm"]
Enter the setting mode for "Low Limit Temperature for Alarm"
according to the procedure described in page 11. If you have
already set the High Limit Temperature as in page 12, the set-
ting mode for "Low Limit Temperature for Alarm" turns up auto-
matically. The initial set ting is at -20.0 ˚C.
Press or button in the setting mode to change the
temperature vale, which your need alarm at.
Press SET/ENTER button to set the displayed value as the
Low Limit Temperature for Alarm.
Attention:The "Low Limit Temperature for Alarm" cannot be
set at higher temperature than "High LimitTempera-
ture for Alarm".
[Turning ON/OFF Alarm Function]
When the Low Limit Temperature setting is completed, the
setting mode to ON/OFF Alarm Function appears. Press
.or button to select ON or OFF.
Press SET/ENTER button to set ON or OFF. While the Alarm
function is OFF, the Alarm function does not work even if the
measuring temperature goes higher than a preset level.
Setting mode for
"High Limit Temperature for Alarm"
(Initial setting: -20.0 ˚C)
Setting
–– "Low Limit Temperature for Alarm"
13
Changing the temperature value to -10.0
˚C by using
/
button.
Setting the temperature value with
SET/ENTER button.
Alarm function: ON
Alarm function: OFF






[Emissivity Ratio(HOT/COLD mode)]
Enter the setting mode for "Emissivity Ratio (HOT/COLD
mode)" according to the procedure described in page 11.
The initial setting is HOT (
ε
=0.95).
Press or button in the setting mode to change the
emissivity ratio (HOT or COLD).
Press SET/ENTER button to set the emissivity ratio.
[Setting "˚C/˚F mode"]
Enter the setting mode for "˚C/˚F mode" according to the proce-
dure described in page 11. The initial setting is ˚C.
Press or button in the setting mode to choose the tem-
perature display unit whether ˚C or ˚F mode.
Press SET/ENTER button to set the temperature display unit.
* When it is set for ˚F mode, the displayed temperature value
measured, set or stored in memory is automatically converted
to Fahrenheit in any mode.
[Record Erasing]
Note this function is to erase all the stored records in memory.
It is not able to erase data one by one.
Enter the setting mode for "Record Erasing" according to the
procedure described in page 11.
Press or button in the setting mode to select "CLR" sign on
the display.
Press SET/ENTER button, and all the recorded data are erased.
* If you wish to cancel the Record Erasing, press button to select "ESC" sign on the
display and press SET/ENTER button. Then, you can return to the setting mode again.
* Please note that OPTEX is not liable for any loss of data.
Emissivity (
ε
)
Emissivity is a value that indicates the infrared energy emitted from the surface of an object. Every object has its own emissivity
value and it varies depending on the surface condition or the temperature of the object. The emissivity ratio of PT-7LD is fixed at two
points, i.e., HOT (
ε
=0.95) and COLD (
ε
=0.85).
Example : HOT (
ε
=0.95): Food, rubber, plastic, painted area, etc.
COLD (
ε
=0.85): Frozen food (frosty surface), etc.
If the object has different emissivity value from either of the above ratio, there could be some possibilities that the measured
temperature value on the display shows different from the actual temper ature value of the object. Refer to the above examples as
a guideline for setting HOT/COLD mode. When you wish to measure shiny object like metals, put a piece of optional black tape
(
ε
Setting
––
"Emissivity Ratio (HOT/COLD mode)", "˚C / ˚F mode" and "Record Erasing"
14
[COLD mode]
"COLD" and "0.85" are displayed in turn.
[HOT mode]
"HOT" and "0.95" are displayed in turn.
[˚C mode]
[˚F mode]
[Record Erasing mode]
[Record Erasing Cancel mode]

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


=0.95) on the surface of the measuring object to cover the measuring area, if possible.

If the condition is not improved by the above-mentioned solutions, the thermometer may be out of
order. Please contact the distributor where you purchased the unit.
Troubleshooting
15
Condition Cause Solution
Nothing on display.
The laser will not
activate.
Measured temperature
value seems incorrect.
A displayed temperature
value is unstable.
The battery has run out of
electricity. Otherwise the bat-
tery is not installed correctly
in a battery compartment.
Replace the battery with a new alkaline one.
Otherwise install the battery correctly in the battery
compartment.
A laser aperture is stained.
Clean the laser aperture referring "Main Unit" of
"MAINTENANCE" described in page 16.
Voltage for laser is insufficient.
Replace the battery with a new alkaline one.
(A sign -b- blinks.)
Otherwise install the battery correctly in the battery
compartment.
A filter unit is stained.
Clean the filter referring "Filter" of "MAINTENANCE"
described in page 16.
Field of view is deviated
from the measuring object.
Center the laser beam on the measuring object by referring
"Field of View" described in page 9.
The measuring object is
smaller than the field of
view.
Adjust the measuring range referring to "Field of View" shown
in page 9.
Affected by a nearby
heating source
Block the heating source with a shielding plate or something
like that to avoid interference.
Measuring temperature of
a shiny metal sarface.
The thermometer is affected
by considerable temperature
fluctuation.
Wait until the temperature of thermometer stabilizes.
The displayed temperature could differ from the actual
temperature of which surface is shiny or polished.
Put a piece of optional black tape on the measuring
object, if possible.

Maintenance
[Filter]
Dust, stain or scratch on a filter causes incorrect measurement. If the filter is stained, clean the filter
with a lens-cleaning blower or wash it with clean water.
If the filter is still stained, gently wipe the stain off with a cotton swab or lens cleaning cloth, which may
be moistened with ethyl alcohol.
Note. If any water drop is on the filter and/or the area around it, the thermometer measures temperature
of the water drop, which results in incorrect measurement. Wipe up the filter and the area around
it completely before taking measurement.
[Main Unit]
This thermometer has waterproofing; therefore, it can be washed with clean water.
If the thermometer is stained considerably, wash it with a little neutral detergent diluted with clean
water. After cleaning the thermometer by washing, wipe it completely before use.
Note. Do not use hot water over 50˚C or chemicals such as thinner and benzene for cleaning as it may
deform or damage the thermometer.
[Annual Inspection]
Re-calibration is recommended once a year. Ask the distributor where you purchased the unit for
details.
Battery
[Installing Battery]
When the battery level indicator shows little electricity left and/or "-b-" sign
on the display blinks, replace the battery with a new alkaline one.
Note. Upon replacing the battery, keep the battery compartment out of
the water. Wipe the main unit completely.
Turn the lock for battery cover at the back of main unit counterclockwise
to open the battery compartment.
Much the" " " " polarities of the battery with the signs on the battery
compartment.
Close the battery cover and turn the lock clockwise to fix it.
Note. If the compartment cover is not locked properly, water penetrates the
inside and the waterproofing does not work. Be sure to lock it com-
pletely.
Maintenance / Battery
Cautions on battery
Do not throw used batteries into a fire nor recharge it
Do not dispose any used battery together with garbage. Follow local laws or regulations
when disposing batteries.
Remove the battery for a long-time storage.
16
Lock
!

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




THERMO-HUNTER
PT-5LD
OPTEX FA CO.,LTD.
91 Chudoji-Awata-cho Shimogyo-ku Kyoto 600-8815 JAPAN
TEL: [phone] FAX: [phone]
Printed in JAPAN 0806970 2018/6
Portable Non-Contact Thermometer
Instruction Manual

Introduction
• Please make sure the model you purchased is the one you specified.
• Please read the manual thoroughly before using theTHERMO-HUNTER
PT-5LD for correct usage.
• After reading this manual, please retain it for future reference.
• OPTEX is not liable for any incidental or consequential damages or
losses including losses of data or chances of measurement, arising
from accident, misuse or abnormal conditions of operation or handling.
Contents
Introduction
····················································································
Safe Usage
····················································································
Warnings & Cautions on Environment and Usage
·······························
Specifications
·················································································
Name of Components
·······································································
Operation
·······················································································
Normal Measurement / Continuous Measurement
·······························
Field of View
···············································································
Memory Function
········································································
Settings
·························································································
Setting "High Limit Temperature for Alarm"
·········································
Setting "Low Limit Temperature for Alarm"
·········································
Setting "Emissivity Ratio (DARK/BRIGHT mode)"
································
Setting "˚C / ˚F mode"
···································································
"Record Erasing"
·········································································
Setting "Hold mode Selections"
······················································
Troubleshooting
Conformance to EU Directives
・This is a class A product. In residential areas it may cause radio interference,
in which case the user may be required to take adequate measures to reduce
interference.
···············································································
Maintenance / Battery
·······································································
2
3
4
5
6
8
8
9
10
11
12
13
14
14
14
15
15
16
2
Thank you very much for purchasing this product. This device is a non-contact
thermometer to convert the infrared energy emitted from the surface of an object into
temperature. This thermometer measures the surface temperature of solid and liquid
without contacting them. The temperature of gas cannot be measured by this thermometer.

This product is not a clinical thermometer
and therefore, can not be used for medical
purposes.
Do not look into the laser beam, nor point it
directly at eyes. Even the reflection is
harmful. This laser may cause eye injury or
damage to your health.
Use of controls or adjustments or perfor-
mance of procedures other than those
specified herein may result in hazardous
radiation exposure.
Safe Usage
This instruction manual contains various warnings for your safety and proper usage to
avoid possible personal injury. Please be sure to heed the warnings and strictly follow
safety instructions.
！ CAUTION：
This symbol signifies that improper usage may
result in injuries or damage.
！ CAUTION
！ CAUTION
！ CAUTION
3

This thermometer has waterproof-ing,
but it cannot be operated in the water.
Water drops on the filter or the area
around it may cause in- correct
measurement. Wipe up the filter and the
area around it completely before taking
measurement.
Safe Usage
–– Warnings & Cautions on Environment and Usage
Environmental Warnings / Cautions –– Warning –– Caution
KEEP THE THERMOMETER
AWAY FROM DROPPING WATER
AND DO NOT USE IN WATER.
KEEP THE THERMOMETER
AWAY FROM DIRECT SUNLIGHT,
DUST, HIGH TEMPERATURES
AND HIGH HUMIDITY DURING
USE AND STORAGE.
This may cause irreparable damage or
incorrect measurement.
e.g. Leaving the thermometer in a car
under a burning sun for long may result
in damage as it will get hot inside the car.
Usage Warnings / Cautions –– Warning –– Caution
4
DO NOT EXPOSE THE THER-
MOMETER TO SUDDEN TEM-
PERATURE CHANGES.
Sudden temperature changes may
cause incorrect measurement.
Leave the thermometer for a while
to let it reach stable temperature
before taking measurement.
AVOID MEASURING SHINY OB-
JECTS.
DO NOT USE ANY BATTERY
OTHER THAN SPECIFIED.
This may cause irreparable dam-
age or incorrect measurement.
DO NOT TOUCH THE FILTER.
Do not touch the filter with some-
thing hard or things with sharp
points, which may damage the fil-
ter. Damaged filter causes incor-
rect measurement.
KEEP THE THERMOMETER
AWAY FROM CHARGED OB-
JECTS.
This may cause irreparable dam-
age or incorrect measurement.
This product has shock resistant
structure to survive under normal
usage, but throwing or falling the
unit intentionally with force may
cause irreparable damage.
Usage in such environments may
cause irreparable damage or in-
correct measurement.
DO NOT OPERATE THE THERMO-
METER NEAR LARGE ELECTRO-
MAGNETIC FIELDS.
Shiny objects reflect surrounding
infrared energy.
Therefore, it results in incorrect
measurement.
DO NOT DROP THE THERMO-
METER OR APPLY VIOLENT
SHOCKS.
The unit is a non-contact thermo-
meter. Touching or getting too close
to the objects with high temperatures
may cause irreparable damage or
incorrect measurement.
DO NOT LET THE THERMO-
METER TOUCH THE OBJECT
THAT IS BEING MEASURED.