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Waterproof  

Hand-held Infrared 

Thermometer 

IRT-500-TE 

 
 
 

Instruction Manual 

Read this manual before using the instrument. 

 

 

SHINKO TECHNOS CO., LTD.

 

 

 Relation of Distance   

and Measuring Diameter 

The relation between the distance and measuring diameter is as 
follows.  
The more the distance increases, the required area becomes large. 
For an accurate reading, a sufficient measuring area should be 
ensured.  

 (Unit: mm) 

 

The above measuring diameter is defined as an area which allows 
the capture of more than 90% of energy.   

 Maintenance 

Measuring Window 

The measuring window applies a waterproof structure (IP67). If
water-soluble stains adhere to the window, wash the measuring
window with the tap water. Dry the measuring window well after
washing. Please note that measurement while the measuring
window is wet will cause inaccurate readings. If oil-soluble stains
adhere to the measuring window, wipe it with a cloth dipped in the
diluted neutral detergent and rinse it.   

 

Note

 

Do not use chemical agents such as thinner, benzine or alcohol
since these may cause a crack or fog on the surface of the
measuring window, and consequently it may change the infrared
radiation transmittance of the plastic lens.   

Plastic Lens 

Dust, stains and scratches on the measuring window cause
inaccurate readings. Wipe such stains off with a soft cloth or cotton
bud for camera or glasses. To get rid of tough stains, remove the top
hood (rubber) by drawing it, and wipe the lens with a cloth dipped in
the diluted neutral detergent and rinse it. After getting rid of the
stains, put the top hood back to the previous place by aligning the
slots and projections along the edge of the hood and on the device
together. After this, ensure that the hood is fastened and will not
come apart. 

 Troubleshooting 

Symptoms Cause 

Countermeasures 

No display appears 

Batteries have been exhausted or they are not placed 
correctly.  

Replace or place them correctly.   

Laser beam is not emitted or is 
weak. 

Battery voltage is low.  

Measurement is possible. Replace batteries when the laser marker is 
necessary.  

Plastic lens is dirty.   

Clean the plastic lens referring to the “Maintenance” section.   

A heat source nearby is affecting measurement. 

Shield the heat source by a shielding plate. 

Emissivity is not selected properly. 

If emissivity is unknown, refer to “Reference” section. Also, measure the 
temperature by a contact type thermometer and select adequate emissivity 
so that temperature of this instrument becomes equivalent to that of the 
contact type thermometer.   

Abnormal reading 

The measuring target area is too small.   

Check the target area and keep a sufficient area for measurement.   

Unstable reading 

The unit is affected by a rapid temperature change.   

Leave the unit to stabilize its temperature, then measure.  

No reading appears but display is 
‘OL.’ 

Out of measuring temperature range   

Check the target to be measured.   

 
 

 

Caution

 

IRT-500-TE is one of the portable   
laser applied instruments which   
are regulated by the consumer   
product safety law.   

  Do not stare into the laser beam.   

  Do not aim the laser beam at   

people.  

  Keep the instrument out of   

the reach of children.   

 

 

Please follow the precautions below for use to keep 
the instrument’s functions proper and to enable 
accurate measurement.   

 

Safety Precautions 

 

Do not allow this product to come into contact with the object 
being measured.   
This is a contactless thermometer. Contact with a hot section 
may cause irreparable damages or inaccurate readings.   

 

Do not damage the measuring window (plastic lens). 
Do not allow a hard object to come into contact with the 
measuring window.   
Do not let a foreign object penetrate the measuring window, 
or drop a hard object on the measuring window.     

 

Although this instrument applies a shockproof structure, do 
not allow the instrument to be exposed to excessive shocks.   

 

Do not bring the instrument close to an electrostatic object.   

 

Emissivity of this instrument can be selected (0.8 to 1.0). 
When the emissivity setting is different from that of a 
measured object, an inaccurate reading will occur.   

  Sudden changes in ambient temperature will cause 

inaccurate readings. Wait a while to let the temperature of the 
instrument stabilize, and then measure it.   

 

Remove batteries from the instrument if the instrument is not 
in use for a long period or is put in storage.   

Environmental Precautions 

  Do not use or store the 

instrument in a location 
where it is exposed to 

 

direct sunlight, dust, 
lampblack and corrosive 
gas, or where temperature 
and/or humidity is high. 
Otherwise the measuring 
window will become soiled or 
deteriorated, which can 
cause inaccurate readings.   

 

As this instrument has a waterproof structure (IP67), a slight 
amount of water will not damage the instrument. When the 
plastic lens is wet, however, wipe the lens carefully so as not 
to scratch it as being wet will cause inaccurate readings. 

 

Keep the instrument away from an object which radiates  
strong electromagnetic waves. 

 

 Specifications 

Type 
Measuring Range 
Display Resolution 
Measuring Accuracy 

IRT-500-TE 

40 to 300 

°

0.5

°

C. 1

°

C for below 

20

°

C and over 100

°

C.  

When the ambient temperature is 25

±

2

°

C and the emissivity 

(

ε

) is 1,   

0 to 300

°

C: 

±

1% of the measured value 

±

 1digit or 

±

2

°

C

±

1digit, whichever is greater 

30 to 0 

°

C: 

±

3

°

±

 1digit 

Below 

30

°

C: 

±

5

°

+

 1digit 

Repeatability 

Within 1

°

C

±

1digit 

Response 

1sec (90% response) 

Measuring Diameter 

φ

45mm/500mm (Optical sensitivity: 90%) 

Emissivity Settings 

Default: 0.95. The value can be altered between 0.8 and 1.0 
with the slide switch at the lower part of the battery 

compartment (at intervals of 0.05). 

Collimation 

Laser beam (650nm 1mW JIS class2) specifies the center.   

Waterproof Property 

IP67 

Auto Power Off 

If no key is pressed for 30 seconds, the power is shut off 
automatically.  

Shock-proof Property 

This instrument or its function/performance will not be 
damaged even if it is dropped to a vinyl tile floor from heights 

of up to one meter.   

Operating Temperature 

0 to 50

°

Operating Humidity 

90%RH or less (no condensation) 

Storage Temperature 

20 to 55

°

C (no condensation)  (Note): In the case of 

long-term storage, the batteries should be removed.   

Battery 

2 AAA alkaline cell batteries 

Battery Life 

Approximately 10 hours of continuous use 

Housing material 

ABS (antibacterial) 

Dimension 

120 

×

 60 

×

 54mm (Maximum value for each direction)   

Weight Approx. 

123g 

Accessories 

2 AAA alkaline cell batteries, instruction manual, strap 

Approved Standard 

CE marking:EMI EN61326 ClassB ,EMS EN61326 Annex C 

Stability:

±

5.0

  under EMC test environment at 25

   

 

SHINKO TECHNOS CO.,LTD.

OVERSEAS DIVISION

:
:
:
:

Reg. Office
Mail Address
URL
E-mail

2-48, 1-Chome, Ina, Minoo, Osaka, Japan
P.O.Box 17, Minoo, Osaka, Japan
http://www.shinko-technos.co.jp
[email protected]

Tel :
Fax:

81-727-21-2781
81-727-24-1760

 

Hood

No. IRT51E3 2004.12

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