INSTRUCTION MANUALFORPORTABLE
DIGITAL INFRARED RADIATION THERMOMETER

IRT-300-AS
IRT-300-AT

Request and notices
For the safe and correct use of the thermometer, please read this instruction manual.

◆Request to the operator of the thermometer
This instruction manual also describes the maintenance of the thermometer.
Keep this instruction manual with the thermometer.
If you have any doubts or need technical assistance, please contact SHINKO's sales
agent.

Notices
1. The contents of this instruction manual are subject to change without notice.
2.

If any question arises, or if there are any errors, omissions, or other deficiencies, please inform

SHINKO's sales agent.
3. SHINKO is not responsible for the results of any operation.

2

Preface
For the safe and correct use of the thermometer, please adhere to the following safety measures forthe operation and storage of the thermometer.

１ Working conditions and environment● The thermometer has been designed as a handheld type. Use a tripod or a simple type universal head forlong term or fixed mounting measurements.
● The working temperature range of the thermometer is 0 to 50 °C. (No dew condensation)● Do not use the thermometer in dusty places, etc. Remove the dust after using it.
(As for cleaning the cover glass, refer to the clause of "8.3 Cleaning of cover glass".)● Be careful that the thermometer is not subject to vibration or impact.
● For preventing the consumption of the batteries, turn the Power Supply Switch of the thermometer off when it
is not used.
● As glass can not transmit the infrared ray in the measuring wavelength of the thermometer, when thethermometer measures an object through the glass, the surface temperature of the glass is measured.
(For Model IRT-300-AT only)● When ambient temperature changes rapidly, the measured value may be influenced. When the thermometerhas been brought to a place where the ambient temperature is greatly different from the former place, leave
the thermometer for one hour and then start the measurement. (For Model IRT-300-AT only)

２ Storage●Do not store the thermometer in hot and humid places. Make sure to store the thermometer with the lens cap.
Storing the thermometer in room temperature with a drying agent is recommended.
● Do not leave the thermometer in places of extremely high ambient temperature such as beside a rear window
or inside of the trunk of a car. This may disturb the operation of the thermometer.
● When the thermometer is not used for 2 weeks or more, remove the batteries. Otherwise, the thermometer
may be damaged by liquid leakage of the batteries.
● If any problems occur, please contact SHINKO' s sales agent.

３ Symbol in this instruction manual
In this manual, the symbols shown below are used depending on degrees of importance for using thethermometer safely and avoiding unexpected situations.
Degrees ofimportance

Symbols

１！

Contents
This symbol is attached to a title with aWarningsentence.

２

Warning

For avoiding dangerous accidents (which may cause death or serious
injury) such as electrical shock, fires, or troubles/damages to thethermometer３

CautionFor avoiding injury or physical damage to the thermometer

４

Remarks

For items that you should know as a supplement for this instruction manual

５

Reference

For items that are convenient as a supplement for this instruction manual3！

Warnings and Cautions◆ Please use the thermometer correctly by adhering to the following items.
In addition, please read this instruction manual carefully and keep it at the place where you can accesseasily.

！

Warning （May cause death or serious injury）！

Make sure not to view the sun through the finder of the thermometer. It may cause blindness.
To protect the detecting element, never directly face the objective lens to the sun. For themeasurement of high temperature objects, refer to the clause of "5.4 Cautions on measurement".

！
！

Never operate the thermometer in places where combustible or volatile gas is present.

！

！
！
！
！

It is extremely dangerous to use the thermometer in such an environment.
Never put the batteries into fire, or never charge, short-circuit, heat or disassemble the batteries.
Breaking or heating the batteries may cause fire or injury.
Never use the thermometer if it has been broken, is smoking or if there is a bad smell. Using it
under these conditions may cause fire.
When the thermometer is broken, smoking, or if there is a bad smell, turn the power supply
switch off at once and take out the batteries, and contact to SHINKO' s sales agent.

Caution（May cause injury or physical damage)
Do not use other batteries than the batteries specified.
Load the batteries so that their polarities meet the polarity marks on the battery case. Different
polarities may cause fire, injury or damage by burst or liquid leakage of the batteries.
Do not walk while looking through the finder of the thermometer.
It may cause accidents.
Never take the thermometer apart or convert it.
These may cause problems and be dangerous.

！

Adhere to the [items] and handling methods described in this instruction manual. When thethermometer is used without adhering to them, the thermometer may be damaged or not
function perfectly, or may damage other equipment.

！

Dispose of the used batteries according to the appropriate disposal procedure in your country.

4

CONTENTS
6.6

1. Introduction ······································ 6
1.1

Deletion of all storage data ··············· 18

7. User calibration ······························ 19

General··········································· 62.Model and accessories ······················· 6

7.1
7.2

2.1
2.2

8. Maintenance and check ·············· 21

Model·············································· 6
Accessories ······································ 6

3. Names and functions ofcomponent parts ················· 7

8.1
8.1.1
8.1.2
8.1.3
8.1.4
8.2
8.3
8.4

4. Preparation for measurement ········· 9
4.1 Loading batteries······························· 9
4.2 Start and stop··································10
4.2.1 Start···············································10
4.2.2 Stop················································10
4.3 Programming temperature unit········· 10

8.5

5. Measuring ··········································11
Measuring procedure························11
Continuous measurement·················11Auto power off ································11
Cautions on measurement ················12Measuring·······································13
Programming emissivity ·················13
Programming signal
modulation mode·········13
5.5.3 Programming modulation time
constant······················14
5.5.4 Programming alarms ·······················14

9.1 Modes at start time·························· 23
9.2 Table of screens ······························· 23
9.2.1 Measuring parametersprogramming /display items······· 23
9.2.2 Temperature data storage
programming /display items ······· 23
9.2.3 Status display items ························ 24
9.2.4 System programming display items··· 24

10. General specifications··············· 24
10.1 External dimensions························ 24
10.2 Specifications ·································· 25

6. Temperature data storage ················15Manual storage mode ·······················15
Storage-with-interval mode···············16Display of data stored ·······················17
Number of temperature data stored ···17
Deletion of last storage data ··············17

CautionSelf-diagnostic function ···················· 21
Low battery ···································· 21
Abnormal internal temperature ········ 21
EEPROM error ······························· 21
Status display ································· 21
Storage··········································· 22
Cleaning of cover glass ····················· 22
Cleaning of external display andeyepiece cover ······· 22
Initializing to default condition ········· 22

9. List of starting Modes/Screens ····· 23

5.1
5.2
5.3
5.4
5.5
5.5.1
5.5.2

6.1
6.2
6.3
6.4
6.5

Calibration method ························ 19
Recovery of calibration data·············· 20

11. Emissivity table······················· 26
11.1
11.2
11.3

Emissivity table （λ= 0.65µm）····· 26
Emissivity table （λ= 0.9µm） ······ 27
Emissivity table （λ= 1.55µm） ···· 27

Read the items marked with ！ in the title without fail.
These paragraphs compriseW a r n i n g item.

51. Introduction
1.1 General
IRT-300 series portable infrared radiation thermometers can easily measure temperature without any
contact over a wide range from -50oC to 3000oC. The thermometers can store the temperature datameasured into memory up to maximum 1000 units of data.

2. Model and accessories
2.1 Model
Model
Measuring temperature range
IRT-300-AS Medium/high temperature: 600 to 3000 oC
IRT-300-AT Low temperature: -50 to 1000 oC

2.2 Accessories
Name
AA (UM3) battery
Tripod mounting adapter
Instruction manual
Housing case■

Quantity4111Remarks- markingAbove models conform to EMC
directive. (89/336/EEC, 92/31/EEC
amendment, 93/68/EEC amendment)
EN61326 Emission: Class B
Immunity: Table-Minimum immunity
test requirement.

63. Names and functions of component parts■FrontCollimation mark (Page11)①

Internal display

External display

M e a s S et M em

M I F Erro r

AH

Viewfinder

℃
Ｆ

AL

ＯＮ／ＯＦＦ
ＭＥＡＳＵＲＥＭＥＭ

Beam attenuation filter
selector knob (for IRT300-AS only) (Page 12)

ＥＮＴ

ＭＯＤＥ

②

③
④
⑤
⑥
⑦

●Functions of keys
Keys
① Power switch② Measure switch③ Memory key④ Mode selector key⑤ Shift key⑥ Change key

Major functions
Turns the power supply on or off.
Starts or stops measurement.
Stores the measured data into memory.
Selects the screen.
Shifts the digit on programming parameters.
Changes the numeric at the selected digiton programming parameters.

Indications in this manual⑦ Entry key

Stores the parameter programmed.

ENT

ON/OFF
MEASURE
MEM
MODE
→
↑

■External display
⑦
⑧

⑥
⑤
④

⑨

③

Meas Set Mem M I F Error

②

AH

①

AL

℃
Ｆ

⑩
⑪
⑫

Measured value display
Parameters display

73. Names and functions of component parts●Markers
Indications inthis manualMarkers

Major functions

① AL
② AH
③ Meas
④ Set
⑤ Mem
⑥ M
⑦ I
⑧ F
⑨ Error⑩⑪ ℃⑫ ＦLights when the low limit alarm is on.
Lights when the high limit alarm is on.
Lights during measurement.
Lights when parameters or system is programmed.
Lights when memory is programmed or displayed.
Lights when the memory function is effective.
Lights when the interval memory mode is programmed.
Lights when the memory for data storage has no space.
Lights when the internal temperature of thermometer is abnormal.
Lights when batteries are low.
Lights when the temperature is displayed in oC.
Lights when the temperature is displayed in oF.

“AL”
“AH”
“Meas”
“Set”
“Mem”
Ｍ
Ｉ
Ｆ
“Error”“℃”“゜
F”■Left side panel
Cover ring

Distance adjusting ring

Beam attenuation filter selector knob

Diopter adjusting dial

■Right side panel
Connector cover hook

Connector cover

Adapter mounting screw

Hand strap

Battery cover8

4. Preparation for measurement
4.1 Loading batteries◇ Removing the battery cover
Remove the battery cover by sliding it in the direction of the arrow while slightly pushing
the asterisked (*) part.

Battery cover※◇ Removing the inside cover
Using a coin, remove the inside cover by turning the cover fixing screw in the direction
indicated by the arrow.

Cover fixing
screw
Inside cover◇ Loading batteries
Load the new batteries so that their polarities meet the polarity marks on the battery case.

Polarity markBattery case◇ Mounting the inside cover
Mount the inside cover so that A of the battery case meets B of the inside cover.
31

A

30

B

(Unit: mm)[Battery case]◇ Mount the battery cover.

[Inside cover]9

4. Preparation for measurement
4.2 Start and stop
4.2.1 Start
Press ON/OFF key to turn the power supply on.
This thermometer checks the system immediately after the power supply has been turned on.
The message “System Check” appears on the parameter display while system is checked.
S

y

s

t

e

m

C

h

e

c

k

After the system check is finished, the measurement screen is displayed.
On the measurement screen, the signal modulation mode is displayed on the left side and theemissivity is displayed on the right side of the parameter display.

℃

4.2.2 Stop
Press ON/OFF key to turn the power supply off.
By pressing ON/OFF key, the shutdown process is executed to save the system
information. Make sure to press ON/OFF key to turn off the power to thethermometer.

Caution

4.3 Programming temperature unit
Program the temperature unit by the procedure below.
・Press ON/OFF key while pressing MODE key to turn the power supply on.
・The temperature unit programming screen appears on the parameter display.
U

n

i

t

℃

・Select o C for Centigrade temperature display or o F for Fahrenheit temperature display bypressing the ↑ key.
・Press ENT key to store the temperature unit selected.
・Press ON/OFF key to turn off the power supply once.
The temperature unit stored is displayed again when the instrument is switched on again.

Remarks

・The default temperature unit is oC.

10

5. Measuring
5.1 Measuring procedure・Press ON/OFF key to turn the power supply on.
・Set the measuring distance roughly by the distance adjusting ring.
・Adjust the diopter adjusting dial to see the collimation mark on the internal display clearly.
・Adjust the distance adjusting ring to see the object measured clearly in the collimation mark.
・Press MEASURE key to start the measurement.
The temperature measured is displayed on the internal and external displays, and the “Meas”
marker lights up on the external display.
Meas

℃℃

The “OFL” is displayed if the temperature measured exceeds the measuring range or the “UFL” isdisplayed if it is lower than the measuring range.

・Release MEASURE key to stop the measurement. The temperature measured just before
stop is held on the internal and external displays.

5.2 Continuous measurement
For continuous measurement, press ON/OFF key while pressing MEASURE key to turn the power
supply on. Press MEASURE key to start the measurement. The measurement is continued until
MEASURE key is pressed again.

5.3 Auto power off
The back-light for internal display turns off in 10 seconds after measurement stops.
For the continuous measurement, it turns off in 10 seconds after measurement starts.
To switch on the back-light again, press ENT key. The back-light lights for 10 seconds.
To conserve the battery life, the power supply is turned off automatically if the thermometer is notoperated for 5 minutes.

11

5. Measuring
5.4 Cautions on measurement
Warning！

・Never directly face the objective lens to the sunlight to protect your eyes andthe detecting element.
・Set the beam attenuation filter selector knob to the beam attenuation side inadvance (in the case of Model IRT-300-AS) to protect your eyes whenmeasuring objects exceeding 1500oC.

B e a m a t t e nu a t i o n

Caution・Light path
Ensure that water drops, dust particles, smoke, steam, or other foreign
substances are not introduced into the light path between the object measured
and the objective lens of this thermometer.
・Interference causing high indication
Be careful not to expose the object measured and the objective lens of thisthermometer to direct sunlight, light of an incandescent lamp, flame or otherthermal radiation.
・Abrupt change of ambient temperature
Model IRT-300-AT uses a thermopile as its detecting element. If ambient
temperature changes abruptly, it takes time until the indication is stabilized.
If your thermometer is Model IRT-300-AT and it has been brought into a place
where the temperature difference is noticeable, leave the thermometer for
about one hour before starting the measurement.

12

5. Measuring
5.5 Measuring
This thermometer has various measuring parameters.
The list of parameters is shown in [9. List of starting modes/screens]. By pressing MODE key whenthe measurement screen is displayed, the measuring parameter programming screen appears withthe “Set” marker lit. Measuring parameters cannot be programmed during measurement. To
program the parameters, cancel measurement.

5.5.1 Programming emissivity

If the emissivity of object measured is low, the temperature displayed becomes lower than the actual
temperature and the emissivity is to be compensated.
・Press MODE key to bring up the emissivity programming screen.
E m

i

.

1

.

0

0

・Press → key to shift the digit and press↑

key to program the emissivity.

・ Press ENT key to store the emissivity programmed.
The programming range is 0.10 to 1.99 (0.01 step).
・The default emissivity is 1.00.

Remarks
Reference・ If you know the emissivity of object measured, program its value.
If the emissivity is unknown, measure the temperature of object by a thermocouple
or other sensors and program the emissivity to display the same temperature.
The reference table of emissivity is shown in [11. Emissivity table]

5.5.2 Programming signal modulation mode

The maximum value, average value, and minimum value can be extracted continuously from themeasurement signal (real signal).
・Press MODE key to bring up the signal modulation mode programming screen.
Mo・Press

d

.

↑

R

e

a

l

key to program the mode.

RealThe measured temperature is displayed based on the real
Measuring signal Maxim u m value
signal without any signal modulation.
PEAK
When the measured temperature increases, it is displayed
Peak※
DELAY
REAL
based on the real signal. When the measured temperature
decreases, it is displayed based on the first-order lag
signal by the time constant being programmed by the
Mean value
modulation time constant programming.
※
The measured temperature is displayed based on theDelayfirst-order lag signal.
※
When the measured temperature decreases, it is displayed
Valleybased on the real signal. When the measured temperature
increases, it is displayed based on the first-order lag signalby the time constant being programmed by the modulation
time constant programming.
※
For the first-order lag degree in peak, delay, and valley, refer to [5.5.3 Programming modulation time
constant].

・Press [ENT] key to store the modulation mode programmed.

Remarks

・The default mode is Real.
13

5. Measuring
5.5.3 Programming modulation time constant

The modulation time constant is programmed on the signal modulation modes. The first-order lag
degree can be adjusted by the modulation time constant. The increase of modulation time constantmakes the first-order lag degree increase and the temperature measured is displayed smoothly.
・Press MODE key to bring up the modulation time constant programming screen.
T

.

C

.

9

9

.

9

s

・Press → key to shift the digit and press ↑ key to program the modulation time constant.
・To program to Hold, increase the value by ↑ key at the most significant digit todisplay “Hold”.
T

.

C

.

H

o

l

d

?

・Press [ENT] key to store the time constant programmed.
The programming range of the modulation time constant is 0.0 to 99.9 seconds (0.1 seconds step)and “Hold”.
Remarks

Reference

・The default time constant is 0.0 seconds.
・Operation when the modulation time constant is programmed to “Hold”.
By programming the signal modulation mode to Peak, the maximum temperatureduring measurement is held. By programming the signal modulation mode toValley, the minimum temperature during measurement is held.
By programming the signal modulation mode to Delay, the temperature measured
is displayed on condition that the modulation time constant is 99.9 seconds

5.5.4 Programming alarms
Two kinds of alarm, high limit alarm and low limit alarm can be programmed. If an alarm is on,either the “AH” (high limit alarm) or the “AL” (low limit alarm) marker lights on the external
display and the buzzer sounds.
Program to “OFF” if no alarm is required.
・Press MODE key to bring up either the high limit alarm programming screen (left figure) or
the low limit alarm programming screen (right figure).
A

l

m H

O

f

f

A

l

m

L

O

f

f

・Press → key to shift the digit and press ↑ key to program the alarm value
・To program to OFF, increase the value by ↑ key at the most significant digit todisplay “OFF”.
・Press ENT key to store the alarm value programmed.
Alarm programming range
High limit alarm programming range
Model
IRT-300-AT
IRT-300-AS

Remarks-50 to 1000 oC（1oC step）、OFF
600 to 3000 oC（1oC step）、OFF

Low limit alarm programming range-50 to 1000 oC（1oC step）、OFF
600 to 3000 oC（1oC step）、OFF

・The default high and low limit alarms are “OFF”.

146. Temperature data storage
This thermometer provides the function of storing temperature data measured up to a maximum of1000 units of data.
Two kinds of storage modes are prepared. The manual storage mode is to store the temperature data
being measured at the time pressing [MEM] key, and the storage-with-interval mode is to store thetemperature data being measured at every interval time programmed.

6.1 Manual storage mode・Press [MODE] key for about 2 seconds on the measurement screen to bring up the storage
mode programming screen.
M M O

D

O

f

f

・Press ↑ key to program to “Man”.
・Press ENT key to store the manual storage mode.
The M marker lights up when the manual storage mode is stored.
Mem M

・Press [MODE] key for about 2 seconds to return to the measurement screen.
・Press [MEASURE] key to start the measurement.
・During measurement, press [MEM] to store the temperature data being measured at thetime into memory and the message “Data Stored” appears.
D

a

t

a

S

t

o

r

e

d

While measurement is not being undertaken, by pressing MEM key, the temperature data being
displayed at the time is stored into memory. (Once data is stored while measurement is not being
undertaken, any data after that can not be stored until the measurement is executed again.)
To make the memory function disable, program to “Off” in the storage mode programming screen.
MEM key does not function and the temperature data are not stored into memory.

Remarks

・The default memory mode is “Off”.

15

6. Temperature data storage
6.2 Storage-with-interval mode・Press [MODE] key for about 2 seconds on the measurement screen to bring up the storage
mode programming screen.
M M O

D

O

f

f

・Press ↑ key for programming to “Int”.
・Press ENT key to store the storage-with-interval mode.
The I marker lights when the storage-with-interval mode is stored.
I

Mem・Press MODE key once to bring up the interval time programming screen.
I

n

t

0

:

0

1

:

0

0

・Press → key to shift the digit and press ↑ key to program the interval time.
・ Press [ENT] key to store the interval time programmed. On this stage, thestorage-with-interval function does not activate.
・Press MODE key for about 2 seconds to bring up the measurement screen.
・Press MEM key to activate the storage-with-interval function. The M marker lights inaddition to the I marker when the function is activated.
M I

・ Press MEASURE key to start the measurement. The temperature data at every interval
time programmed is stored into memory and the message “Data Stored” appears each timethe data is stored.
D

a

t

a

S

t

o

r

e

d

・ To cancel the storage-with-interval function temporarily, press MEM key. The M marker
light turns off.
The programming range of interval time is 1 second to 2 hours (0:00:01 to 2:00:00).

Remarks

・The default interval time is 1 minute (0:01:00).

16

6. Temperature data storage
6.3 Display of data stored
・Press MODE key for about 2 seconds on the measurement screen to bring up the storage
mode programming screen.
・Press MODE key to display the temperature data stored. .
Index number (serial number from 1 to 1000 showing data storing numbers) is displayed on the left
side and temperature data is displayed on the right side.
The temperature data stored into memory last is displayed first.
1

1

0

0

0

℃

・Press → key to display the temperature data stored prior to the temperature data displayed.
Press ↑ key to display the temperature data stored after the temperature data displayed.
・Press [MODE] key for about 2 seconds to cancel the display of temperature data stored.
The message “No Data” appears if any temperature data has not been stored.

6.4 Number of temperature data stored
Maximum 1000 units of temperature data can be stored into memory. The temperature data
exceeding 1000 cannot be stored and the F marker lights when 1000 units of temperature data havebeen stored.
Meas

M

F

To store the new temperature data in this status, delete the previous temperature data referring to[6.5 Deletion of last storage data] and [6.6 Deletion of all storage data].

6.5 Deletion of last storage data
・The following procedure is to delete the last temperature data stored.
・Press MODE key for about 2 seconds on the measurement screen to bring up the storage
mode programming screen.
・Press MODE key to bring up the last temperature data deletion screen.
L

D

D

E

L

Y

E

S

N

O

・Press → key to shift the cursor to “Yes”.
・Press ENT key.
When the data is deleted normally, the message “xxxx Erased” appears. This “xxxx” shows theindex number of the temperature data deleted.
1

0

E

r

a

s

e

d

The message “No Data” appears if any temperature data has not been stored.
・Press MODE key for about 2 seconds to cancel the last temperature data deletion.

17

6. Temperature data storage
6.6 Deletion of all storage data
・The following procedure is to delete all temperature data stored.
・Press MODE key for about 2 seconds on the measurement screen to bring up the storage
mode programming screen．
・Press MODE key to bring up all temperature data deletion screen．
A

D

D

E

L

Y

E

S

N

O

・Press → key to shift the cursor to “Yes”.
・Press ENT key.
When the data are deleted normally, the message “All Erased” appears.
A

l

l

E

r

a

s

e

d

The message “No Data” appears if no temperature data is being stored.
・Press MODE key for about 2 seconds to cancel all temperature data deletion.

18

7. User calibration
For the routine calibration of this thermometer, the user calibration function is provided torecalibrate this thermometer by using your black body furnace for calibration.
The calibration is executed on two optional temperature points.

Caution

Do not calibrate this thermometer if you don’t have a blackbody furnace.

7.1 Calibration method
・Press ON/OFF key while pressing MODE key to turn the power supply on.
・Press MODE key twice to bring up the zero/span calibration execution screen “CMP”.
C M

P

G

O

N

O

・ Press → key to shift the cursor to “GO”.
・ If calibration at the zero side is not necessary, press the MODE key in thisRemarks
status. This brings up the span calibration data programming screen.
・Press ENT key to bring up the zero calibration data programming screen.
At this time, the temperature data indicated by the real signal that is not converted by emissivity
compensation, signal modulation, and modulation time constant is indicated on the temperature data
display.
Meas Set℃

・Measure the temperature of your black body furnace.
・During the measurement of the black body furnace temperature, press → key to shift thedigit and press ↑ key to change the temperature displayed to the calibrated temperatureof black body furnace
・ When changing the numeric value, be sure to select the digit by the → key
Cautionfirst, then press ↑ key. If the ↑ key is pressed first without selecting
the digit to be changed, the value at the most significant digit will bechanged.
・Press ENT key to store the calibrated data at the zero side.
As the confirmation of calibrated data storage, the asterisk (*) appears after the character “Zero”.
Z

e

r

o

Caution

*

7

0

0

℃

・ After the calibration at the zero side is finished and if it takes time longer

than 5 minutes until the calibration at the span side is finished,
Auto-power-off function works and the power is turned off. (When there isno key operation for 5 minutes)

・Press MODE key once to bring up the span calibration data programming screen “Span”.
S

p

a

n

3

0

0

0

℃

・Measure the temperature of your black body furnace, and program and store the calibrated
temperature of black body furnace in the same way as the programming of calibration dataat the zero side. Make sure that the calibration data at the span side is greater than thecalibration data at the zero side19

7. User Calibration
・Press [MODE] key once more to bring up the calibration operation execution screen.
C

A

L

.

G

O

N

O

・Press → key to shift the cursor to “GO”..
・Press ENT key to start the calibration operation.
・When the calibration operation has finished correctly, the message “Completed” appears forseveral seconds
C

o

m

p

l

e

t

e

d

・To make the calibrated data effective, restart the thermometer.
・ If zero/span calibration data are not stored or if the calibrated data at the

Remarks

zero side is greater than the calibrated data at the span side, the message“Data Abnormal” appears and the calibration operation is not executed.

7.2 Recovery of calibration data
This function is to recover the previous data from the calibrated data after the execution of the user
calibration.
The thermometer stores the previous calibrated data at the execution of the user calibration.
To recover the previous stored data from the calibrated data, follow the procedure below.
・Press ON/OFF key while pressing [MODE] key to turn the power supply on.
・Press MODE key twice to bring up the zero/span calibration execution screen.
C M

P

G

O

N

O

・Press → key to shift the cursor to “GO”.
・Press ENT key to bring up the zero calibration data programming screen.
・Press MODE key three times to bring up the calibration data recovery screen.
U

n

d

o

G

O

N

O

・Press [→] key to shift the cursor to “GO”.
・Press [ENT] key.
After the calibration data recovery has finished correctly, the message “Completed” appears.
C

o

m

p

l

e

l

e

d

・To make the recovered calibrated data effective, restart this thermometer.

CautionWhen recovering the previous calibrated data from the current calibrated data, thecurrent calibrated data is erased and the recovering operation can not be executed
again until the next user calibration is executed. To initialize the default calibration
data, refer to [8.5 Initializing to default condition.].

20

8. Maintenance and check8.1 Self-diagnostic function
8.1.1 Low battery
The battery warning marker lights up on the external display when the battery capacity becomes
lower than a certain level. At this time, the batteries have to be replaced.
Meas

CautionBattery warning marker.

For replacing the batteries, refer to [4.1 Loading batteries].

8.1.2 Abnormal internal temperature
If the temperature inside this thermometer becomes abnormal, the inside temperature error marker
lights up on the external display.
M I

CautionError

Inside temperature error marker

The inside temperature error marker lights up when the inside temperature of
the thermometer drops below 0oC or rises higher than 55oC.
Measurement cannot be executed correctly under such an environment.
Check the ambient temperature.

8.1.3 EEPROM error
If an error occurs in the EEPROM which stores the parameters and the temperature data, themessage “EEPROM ERROR” appears at EEPROM access timing.
E

E

P

R O M

Caution

E

r

r

o

r

The parameters and the temperature data cannot be stored into memory under
this condition. Contact your nearest SHINKO’s sales agent.

8.1.4 Status display
If → key is pressed for about 2 seconds on the measurement screen while the thermometer is
stopped, the status of this thermometer is displayed on the external display. Press the MODE key toswitch the screens.
The following status is displayed.
・Inside temperature
・Model・Serial number
・Measuring temperature range
・Measuring wavelength
Press → key for about 2 seconds to return to the measurement screen.

21

8. Maintenance and check8.2 Storage
・Don’t store this thermometer in hot and/or wet places.
・Make sure to mount the lens cap during storage.
・Remove the batteries if this thermometer is not used for longer than 2
weeks, otherwise this thermometer may become defective due to an electrolyte
leak in the batteries.

Caution

8.3 Cleaning of cover glass
Wipe the cover glass inserted into the cover ring periodically with a soft cloth.
In the case of Model IRT-300-AT, the cover glass is mounted in a deep position. Remove the ringfrom the thermometer to wipe the cover glass.

8.4 Cleaning of external display and eyepiece cover
Clean them periodically with a soft cloth.

8.5 Initializing to default condition
For initializing this thermometer to the default condition, press ON/OFF key while pressing ENT
and ↑ keys. The message “Initialized” confirms the initialization.
I

n

i

t

i

CautionRemarks

a

l

i

z

e

d

・By this operation, all parameters are initialized to the default condition andthe temperature data stored are erased.

・For the default parameters, refer to [9.2 Table of screens]229. List of Starting Modes/Screens
9.1 Modes at start time
The following operation modes are available by the key combinations at the start time.
Keys
Press ON/OFF key only
Press ON/OFF while pressing MEASURE key
Press ON/OFF key while pressing MODE key

Modes
Standard measurement
Continuous measurement
System programming

Press ON/OFF key while pressing ENT and Initialization↑ keys together

Remarks

No measurement can be
executed.
Afterinitialization,thestandard measurement is
executed.

9.2 Table of screens
The screens displayed on the external display correspond to the 4 basic types.
Modes
Programming
measuring parameters
Programming anddisplay on
temperature data
storage
Status display
System programming

How-to-display
frommeasurement screen
Press MODE key.

MakersappearedPress MODE key for 2
seconds.

"Mem"

"Set"

Press → key for 2
seconds.
Press ON/OFF key whilepressing MODE key toturn the power supply on.

Return to measurement screen
Press MODE key on the low limit
alarm programming screen.
Press MODE key for 2 seconds.
(Enable from any screen)

Press → key for 2 seconds.
(Enable from any screen)"Set"

To change screens, press MODE key.

9.2.1. Measuring parameters programming/display items
ScreenEmissivity
Signal modulation mode
Signal modulation time constantHigh limit alarm

Display
Emi.
Mod.
T.C.
AlmH

Low limit alarm

AlmL

Programming range
0.10 to 1.99
Real, Peak, Valley, Delay
0.0 to 99.9 seconds, HOLD
-50 to 1000 oC, OFF (IRT-300-AT)
600 to 3000 oC, OFF (IRT-300-AS)-50 to 1000 oC, OFF (IRT-300-AT)
600 to 3000 oC, OFF (IRT-300-AS)

Default
1.00
Real
0.0 seconds
OFFOFF

9.2.2. Temperature data storage programming/display items
Screen

Display

Programming range

Default

Storage mode
Interval time programming
Storage data display
Last storage data deletion
All storage data deletion

MMOD
Int

OFF, Man, Int
00:00:01 to 02:00:00

OFF
00:01:00

LDDEL
ADDEL

The interval time programming screen is only displayed when the storage mode is programmed to“Int”.

23

9. List of Starting Modes/Screens
9.2.3 Status display items
Screen

Display

Inside temperature
Model
Serial number
Measuring temperature range
Measuring wavelength

Dtemp
Model
SN
R
WL

9.2.4. System programming display items
Screen

Display

Temperature unit
Zero/span calibration execution
Calibration data programming at
the zero side *1
Calibration data programming at
the span side *1
Calibration operation execution*1
Calibration data recovery *1

Unit
CMP
Zero
Span

Programming rangeoDefault

o

C, F

o

-50 to 1000 oC (IRT-300-AT)
600 to 3000 oC (IRT-300-AS)-50 to 1000 oC (IRT-300-AT)
600 to 3000 oC (IRT-300-AS)-50 oC (IRT-300-AT)
600 oC (IRT-300-AS)1000 oC (IRT-300-AT)
3000 oC (IRT-300-AS)

C

CAL
Undo

*1: The screens for the zero side calibration data programming, the span side calibration data
programming, the calibration operation execution and the calibration data recovery are only
displayed when “GO” is selected on the zero/span calibration execution screen.

10. General Specifications

135

10.1 External dimensions

60

175

24

Unit:mm

10. General Specifications
10.2 Specifications
Model
IRT-300-AS

IRT-300-AT

Measuring System

Narrow band infrared radiation thermometer

Detecting Element
Measuring
Wavelength
Measuring Range

Si

Wide band infrared radiation
thermometer
Thermopile

0.96µm8 to 13µm

Accuracy Ratings
Repeatability

600 to 3000°C-50 to 1000°C
Lower than 200°C: ±2°C ±Lower than 1500°C: ±0.5% of measured value ± 1digit
1digit1500 to 2000°C: ±1% of measured value ± 1digit
Higher than 200°C: ±1% ofHigher than 2000°C: ±2% of measured value ± 1digit
measured value ± 1digit(ε= 1.0, Reference operating condition: 23°C ± 5°C, 35 to 75%RH)
1°C ± 1digit

Stability

1) Temperature drift:0.015% of measured value / °C
2) Stability: ±5°C under EMC test environment

Resolution

1°C1) Temperature drift:
Lower than 300°C: 0.15%/°C
300 to 700°C: 0.05% of
measured value /°C
Higher than 700°C: 0.025% of
measured value /°C2)Stability: ±15°C under EMC
test environment
1°C (higher than 50°C)

Response Time
Emissivity
Compensation

0.5 seconds

1 second

Signal Modulation
Display System
Data
Storage
Function
Users’ Calibration
Function
Output Signal
Communications
Function
Optical System
Distance Factor

ε=1.00 to 0.10 (0.01 increment)
Modulation : Real, Peak, Delay, and Valley .
Modulation ratio:0 to 99 seconds, 1-sec increment
Peak hold, Valley hold, Hold with the measuring switch turned off.
LCD digital 4 digits, Displayed in the finder and on the panel board
Maximum 1000 units of data
Calibration at the zero and span
Digital transmission（RS-232C）
RS-232C
Focusable lens type

Cassegrain focusable mirror
type

100(Measuring distance
L / Measuring diameter D)

40 (Measuring distance
L / Measuring diameter D)

Measuring Distance L = 500mm to ∞Measuring
D = L / 100(ø, mm)
Diameter
Collimation
Direct viewing finder

D = L / 40(ø, mm)Lens Diameter

Ø30mm

Ø40mm

Other Functions

Auto-power-off, Continuous measurement, °C / °F selection, Battery check,
High / low limit alarms

Ambient
TemperaturePower Supply
Casing Material
and Color
Outside Dimensionsand Weight
Attachment

L = 700mm to ∞0 to 50°C
AA (UM-3) battery, 4 pieces (about 20 hours for continuous measurement)
ABS resin, Gray
W135 x H60 x D175mm, About 700g (thermometer only)
4 pieces of AA (UM-3) battery, Adapter for tripod, Housing case25

11. Emissivity table
The emissivity is the value determined by the material of object, profile of its surface, surface
roughness, oxidization, measuring temperature, measuring wavelength and other factors.
They are represented by the thermal radiation ratio "ε" when a black body furnace at the same
temperature is measured in the same wavelength band.
The emissivity "ε" is generally known by a value at the wavelength of 0.65µm when an opticalpyrometer is used. The emissivity changes according to the above factors even if the same material isused. Please use the following table as a reference.

11.1 Emissivity table (λ= 0.65µm)
Metal
Zinc
AlumelAluminum
Antimony
Iridium
Yttrium
UraniumGold
Silver
Chromium
Chromel P
CobaltConstantan
Zirconium
Mercury
Tin
CarbonTungsten
Tantalum
Cast iron
Titanium
Iron
CopperThorium
Nickel80Ni / 20Cr
60Ni / 24Fe / 16Cr
Platinum
90Pt / 10Rh
Palladium
Vanadium
BismuthBeryllium
Manganese
Molybdenum
Rhodium

Emissivity
Solid
Liquid
0.42
―
0.37
―
0.17
0.12
0.32
―
0.30
―
0.35
0.35
0.54
0.34
0.14
0.22
0.07
0.07
0.34
0.39
0.35
―
0.36
0.37
0.35
―
0.32
0.30
0.23
―
0.18
―
0.8 to 0.9
―
0.43
―
0.49
―
0.37
0.40
0.63
0.65
0.35
0.37
0.10
0.15
0.54
0.34
0.36
0.37
0.35
―
0.36
―
0.30
0.38
0.27
―
0.33
0.38
0.35
0.35
0.29
―
0.61
0.61
0.59
0.59
0.37
0.40
0.24
0.30

26

Oxide

Emissivity

Alumel（*）
Chromel(*）
Constantan（*）
Ceramics
Cast iron（*）
55Fe. 37.5Cr. 7.5Al（*）
70Fe. 23Cr. 5Al. 2Co（*）
80Ni. 20Cr（*）
60Ni. 24Fe. 16Cr（*）
Stainless steel（*）
Aluminum oxide
Yttrium oxide
Uranium oxide
Cobalt oxide
Columbium oxide
Zirconium oxide
Tin oxide
Cerium oxide
Titanium oxide
Iron oxide
Copper oxide
Thorium oxide
Vanadium oxide
Beryllium oxide
Magnesium oxide

0.87
0.87
0.84
0.25 to 0.5
0.70
0.78
0.75
0.90
0.83
0.85
0.22 to 0.4
0.60
0.30
0.75
0.55 to 0.71
0.18 to 0.43
0.32 to 0.60
0.58 to 0.82
0.50
0.63 to 0.98
0.60 to 0.80
0.20 to 0.57
0.70
0.07 to 0.37
0.10 to 0.43(*): Oxidized surfaces

11. Emissivity table11.2 Emissivity table (λ= 0.9µm)

11.3 Emissivity table (λ= 1.55µm)

Metal

Emissivity

Metal

Emissivity

AluminumGold
ChromeCobaltIron
CopperTungsten
Titanium
NickelPlatinum
Molybdenum

0.10 to 0.23
0.015 to 0.02
0.36
0.28 to 0.30
0.33 to 0.36
0.03 to 0.06
0.38 to 0.42
0.50 to 0.62
0.26 to 0.35
0.25 to 0.30
0.28to 0.36

Alloy

Emissivity

Inconel X
Inconel 600
Inconel 617
InconelIncoloy 800
KanthalStainless steel
Hastelloy X

0.40 to 0.60
0.28
0.29
0.85 to 0.93
0.29
0.80 to 0.90
0.30
0.30

Aluminum
ChromeCobaltCopperGold
Steel plate
Lead
Magnesium
Molybdenum
NickelPalladium
Platinum
Rhodium
SilverTantalum
Tin
Titanium
Tungsten
Zinc

0.09 to 0.40
0.34 to 0.80
0.28 to 0.65
0.05 to 0.80
0.02
0.30 to 0.85
0.28 to 0.65
0.24 to 0.75
0.25 to 0.80
0.25 to 0.85
0.23
0.22
0.18
0.04 to 0.10
0.20 to 0.80
0.28 to 0.60
0.50 to 0.80
0.30
0.32 to 0.55

Alloy

Emissivity

Semi conductor

Emissivity

SiliconGermanium
Gallium arsenic

0.69 to 0.71
0.60
0.68

Brass
Chromel, Alumel
Constantan, Manganin
InconelMonel
Nickel Chrome

0.18 to 0.70
0.30 to 0.80
0.22 to 0.60
0.30 to 0.85
0.22 to 0.70
0.28 to 0.85

Ceramics

Emissivity

Silicon carbide
Titanium carbide
Silicon nitride

0.80 to 0.83
0.47 to 0.50
0.89 to 0.90

Ceramics

Emissivity

OthersEmissivity

Carbon pigment
Graphite0.90 to 0.95
0.87 to 0.92

Alumina ceramics
Red brick
White brick
Silicon brick
Sillimanite brickCeramics

0.30
0.80
0.35
0.60
0.60
0.50

OthersEmissivity

Asbestos
Asphalt
CarbonGraphite
Soot
Cement, Concrete
Cloth

0.90
0.85
0.85
0.80
0.95
0.70
0.80

27

SHINKO TECHNOS CO.,LTD.
OVERSEAS DIVISION

Reg. Office : 2-48, 1-Chome, Ina, Minoo, Osaka, Japan
Mail Address : P.O.Box 17, Minoo, Osaka, Japan: http://www.shinko-technos.co.jp
URL
Tel : 81-727-21-2781: overseas@shinko-technos.co.jp
E-mailFax: 81-727-24-1760
No.IRT31E1

28

2001.12