Hioki 3415-02, 3416-02, 3418-01 Instruction Manual

INSTRUCTION MANUAL

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3415-02, 3416-02, 3418-01

品名を入力。

TEMPERATURE

HiTESTER

Contents

Introduction
Safety Notes ii
Inspection

iv

Notes on Use

Chapter 1 Summary

1.1 Product Summary 1

1.2 Names and Functions of Parts

Chapter 2 Making Measurements 7

2.1 Turning the Power On 7

2.2 Measuring Temperature

2.3 Continuous Measurement

2.4 How to Specify the Thermal

Emissivity(ε)

2.5 Setting the Upper and Lower Alarm
Temperatures

2.6 Displaying the Maximum and Minimum
Temperatures

2.7 Switching Between Celsius

and Fahrenheit

2.8 Switching On the Laser Marker Beem

(3415-02)

2.9 Turning the Power Off

2.10 Changing the Batteries

12

12

13

13

14

14
14
15

i

v

1

3

7

Chapter 3 Specification 17

3.1 General Specification 3415-02 17

3.2 General Specification 3416-02

3.3 General Specification 3418-01

19
21

Chapter 4 Maintenance and Service 23

4.1 Troubleshooting 25

4.2 Questions and Answers about
Measurement

26

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Introduction

Thank you for purchasing the HIOKI "3415­02/3416-02/3418-01 TEMPERATURE
HiTESTER." To obtain maximum
performance from the product, please read
this manual first, and keep it handy for
future reference.

i

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Introduction

ii

―――――――――――――――――――――――――――

Safety Notes

WARNING

Mishandling this product during use could result
in injury or death, as well as damage to the
product. Be certain that you understand the
instructions and precautions in the manual before
use. We disclaim any responsibility for accidents
or injuries not resulting directly from product
defects.

This manual contains information and
warnings essential for safe operation of the
product and for maintaining it in safe
operating condition. Before using it, be sure
to carefully read the following safety
precautions.

Safety symbols

In the manual, the symbol indicates
particularly important information that the
user should read before using the
product.

Indicates warnings relating to the laser.

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Safety Notes

―――――――――――――――――――――――――――

iii

The following symbols are used in this
Instruction Manual to indicate the relative

importance of cautions and warnings. 

Indicates that incorrect operation

DANGER

presents extreme danger of accident
resulting in death or serious injury to

the user. 

Indicates that incorrect operation
presents significant danger of accident

WARNING

resulting in death or serious injury to

the user. 

Indicates that incorrect operation

CAUTION

presents possibility of injury to the user
or damage to the equipment.

Denotes items of advice related to

NOTE

performance of the equipment or to its
correct operation.

・Accuracy

rdg. (displayed or indicated value)

This signifies the value actually being
measured, i.e., the value that is currently
indicated or displayed by the measuring
instrument.

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Safety Notes

iv

―――――――――――――――――――――――――――

・Check before use

Before using the product, inspect it and check
the operation to make sure that the product
was not damaged due to poor storage or
transport conditions. If damage is found,
contact your dealer or HIOKI representative.

Inspection

When you receive this product, before use,
please check that no abnormality or damage
has occurred during delivery. In particular,
be sure to check the accessories, the liquid
crystaldisplay,thecontrolkeys,andthelens.
In the unlikely event of damage, or if the
product does not function according to
specification, you should immediately contact
the dealer from whom you bought the
product, or the nearest HIOKI service facility.

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Inspection

―――――――――――――――――――――――――――

v

Notes on Use

In order to ensure safe operation and to
obtain maximum performance from the
product, observe the cautions listed below.

DANGER

･Operation of this product according to any

procedure not specified in this manual may
cause explosion due to dangerous laser
radiation.

･The 3415-02 (2-beam laser marker type product)

uses as a light source a semiconducting laser
which emits visible light, and which conforms to
JIS standard class 2 (JIS C6802). (Wavelength
670nm, maximum power output 1 mW)
Since there is considerable danger of this laser
light causing damage to the eyes, be very
careful not to direct this laser light into your
eyes or those of another person.

･ Do not look directly into the laser light from the

optical system.

･ When measuring the temperature of an object

which has a mirror finish, be careful not to allow
the laser light beam to be reflected off the
surface into your eyes or those of another
person.

･ Do not allow the laser light beam to impinge

upon any gas which can explode.

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Notes on Use

vi

―――――――――――――――――――――――――――

WARNING

･To avoid electric shock, do not allow the product

to get wet, and do not use it when your hands
are wet.

･If the protective functions of the product are

damaged, either remove it from service or mark
it clearly so that others do not use it
inadvertently.

CAUTION

･ Do not use the product near a device that

generates a strong electromagnetic field or
electrostatic charge, as these may cause erroneous
measurements.

･ The product should always be operated indoors in a

range from 0℃ to 40℃(3415-02), 0℃ to 50℃(3416-

02, 3418-01) and 35% to 80% rh or less.

･ Do not store or use the product where it could be

exposed to direct sunlight, high temperature or
humidity, or condensation. Under such conditions,
the product may be damaged and insulation may
deteriorate so that it no longer meets specifications.

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Notes on Use

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vii

CAUTION

･ This product is not designed to be entirely water- or

dust-proof. To avoid damage, do not use it in a wet
or dusty environment.

･ Do not use the product where it may be exposed to

corrosive or combustible gases. The product may
be damaged or cause an explosion.

･ To avoid damage to the product, protect it from

vibration or shock during transport and handling,
and be especially careful to avoid dropping.

･ Do not point the lens at the sun or at any other

source of strong light. If you do, the sensor may be
damaged.

･ Do not contact the lens against the object whose

temperature is to be measured, or get it dirty, allow
it to be scratched, or allow any foreign material to
adhere to it. Doing so may cause errors.

NOTE

･ Before use, verify that no damage has

occurred due to careless storage or transport,
and check the appearance and operation of
the product.

･ When the

mark on the display is flashing,

the batteries are low. Fit new batteries.

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Notes on Use

viii

―――――――――――――――――――――――――――

Warning Labels

Location of labels used in the HIOKI "3415-02
TEMPERATURE HiTESTER" are as follows.

Laser caution label

Laser specification
and caution label

Front

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Notes on Use

Rear

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1

Chapter 1

Summary

1.1 Product Summary

1. Theory of Measurement
Every object emits infrared energy in
accordance with its temperature. By
measuring the amount of this radiant energy,
it is possible to determine the temperature of
the emitting object.

2. About infrared
Infrared radiation is a form of light
(electromagnetic radiation), and has the
property that it passes easily through air,
while it is easily absorbed by solid matter.
With an emission thermometer which
operates by detecting infrared radiation,
accurate measurement is possible,
irrespective of the air temperature or the
measurement distance.

3. Emission Thermometer Structure
Infrared radiation which has been emitted
from the object is focused upon an infrared
radiation sensor, via an optical system which
includes a lens which is transparent to

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Chapter 1 Summary

2

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infrared radiation, an 8μm cuton filter, etc..

The output signal from the infrared radiation
sensorisinputtoanelectroniccircuitalong
with the output signal from a standard
temperature sensor.
The electronic circuit calculates the object
temperature while applying standard
temperature compensation, thermal
emissivity compensation, etc., and displays
the result.

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Chapter 1 Summary

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3

1.2 Names and Functions of Parts

3415-02 2-beam laser

marker type

3418-01 Standard type

②

Laser mark beam

emission openings(3415-02)

①

3416-02 LED spot

marker type

Lens

③

⑦

LCD display

LED mark beam

emission opening

⑤

Numeric input keys

⑥

MEAS

④

MODE

key

――――――――――――――――――――――――

key

Chapter 1 Summary

4

―――――――――――――――――――――――――――

Lens

①

Infrared rays from the object whose
temperature is to be measured are received
here.

Laser marker beam emission openings(3415-02)

②

The laser marker beams are emitted from
here.

LED mark beam emission opening(3416-02)

③

The LED mark beam is emitted from here.

MODE key

④

Pressing this key switches the mode around
the cycle

→ALM↑→↓ALM→MAX→MIN→

ε

HOLD.

・HOLD: After measurement is completed,

the HOLD indication appears, is
illuminated, and the measured value is
held.

・

: The inherent thermal emissivity of the

ε

object is set using the ▼ and ▲ keys.

・ALM

: The upper limit alarm temperature

↑

is set using the ▼ and ▲ keys.

・

ALM: The lower limit alarm temperature

↓

is set using the ▼ and ▲ keys.

・MAX: The maximum temperature during

measurement is displayed.

・MIN: The minimum temperature during

measurement is displayed.

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Chapter 1 Summary

―――――――――――――――――――――――――――

5

Numeric input keys

⑤

・▼ key: The numerical value is reduced.
・▲ key: The numerical value is increased.

If either of these numerical value keys is held
down, the numerical value changes rapidly in

the appropriate direction.

MEAS key

⑥

When pressed, the power is turned on and
measurement starts. When released,
measurement is terminated.

LCD display

⑦

:Indicates whether the laser marker beam

・

is on or not. During measurement with the
laser marker beam on, this indication
flashes (3415-02).

・

:Shows the amount of battery
capacity remaining. If the battery voltage
drops below the minimum level to
guarantee accuracy, the

mark (only)

flashes.

・

:Turned on when the display is showing

℃

temperature in products of degrees Celsius.

・

F: Turned on when the display is showing

°

temperature in products of degrees
Fahrenheit.

・HOLD: Appears when the last measured

temperature value is being held.

・

: Appears when the thermal emissivity is

ε

being set.

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Chapter 1 Summary

6

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・ALM

: Appears when the upper limit

↑

alarm temperature is being set.

・

ALM: Appears when the lower limit

↓

alarm temperature is being set.

・MAX: Appears when the maximum

temperature during measurement is being
displayed.

・MIN: Appears when the minimum

temperature during measurement is being
displayed.

・SET: Blinking when a numerical value can

be set.(during setting ofε, ALM↑,and

↓

ALM)

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Chapter 1 Summary

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7

Chapter 2

Making Measurements

2.1 Turning the Power On

When the power is off, pressing the MEAS

key turns on the power.

ThevaluesandsettingsontheLCDdisplay
return to the state before the power was last
tu r ned off.

NOTE

･ If, from the power off condition, the MEAS

key is held down for more than one second,

measurement starts.

2.2 Measuring Temperature

1. Press the MODE key, repeatedly if necessary,

until the (ε) mark lights up.

Refer to the following table and, using the ▼

and ▲ keys, set the thermal emissivity for

the object whose temperature is to be
measured.

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Chapter 2 Making Measurements

8

―――――――――――――――――――――――――――

Substance Thermal

emissivity

Asphalt 0.90 to 0.98 Cloth (black) 0.98

Concrete 0.94 Human skin 0.98

Cement 0.96

Sand 0.90 Charcoal

Earth 0.92 to 0.96 Lacquer 0.80 to 0.95

Water 0.92 to 0.96 Lacquer

Ice 0.96 to 0.98 Rubber

Snow 0.83 Plastic 0.85 to 0.95

Glass 0.90 to 0.95 Timber 0.90

Ceramic 0.90 to 0.94 Paper 0.70 to 0.94

Substance Thermal

emissivity

Leather

(powder)

(matt)

(black)

0.75 to 0.80

0.96

0.97

0.94

Marble 0.94 Chromium

oxides

Plaster 0.80 to 0.90 Copper

oxides

Mortar 0.89 to 0.91 Iron oxides 0.78 to 0.82

Brick (red) 0.93 to 0.96 Textiles 0.90

NOTE

･ Variations in the surface condition and color

0.81

0.78

of the object whose temperature is to be

measured may cause the thermal emissivity

ε to be somewhat different from the values

in the above table. If an accurate

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Chapter 2 Making Measurements

―――――――――――――――――――――――――――

9

temperature measurement is desired for an
object whose thermal emissivity is not known,
black body tape or black body spray (sold
separately) should be used. In this case the

setting for thermal emissivity (ε) should be

the value indicated on black body tape or
black body spray.

2. Point the lens at the object whose
temperature is to be measured.

3. Press the MEAS key.
Measurement is performed as long as the

MEAS key is kept pressed.

DANGER

With the 3415-02, whenever the indication is
flashing, the laser marker beam (class 2) is being
emitted. Exercise extreme care not to allow the
laser marker beam to enter your eyes (because of
this laser light causing damage to the eyes) or
those of another person.

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Chapter 2 Making Measurements

10

―――――――――――――――――――――――――――

4. Referring to the figure, aim the laser beam at
the object whose temperature is to be
measured.

･ All dimension are millimeters, and φ

represents a diameter.

3415-02/3418-01

φ

14

The dimensions in parenthesis show the target.

500

φ

40

φ

72

(60)

1000

(95)

2000

Target object

Measurement
field diameter

The laser marker beams
is aimed both sides of the
measurement field
diameter. (3415-02)

φ

140

(163)

(mm)

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Chapter 2 Making Measurements

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11

3416-02

φ

30

The marker beam is focused at a distance of 30 mm.

φ

2.5

10.1

50

The place at which the "◎"
mark is clearest is where
the diameter of the spot is
smallest (2.5 mm).

φ

100

Target object

32.4

(mm)

NOTE

･ Although the field of measurement and the

sighting almost coincide, actually the field of

measurement corresponds to the diameter for

90% optical response. The object whose

temperature is to be measured needs to be
larger than the measurement diameter by an

adequate margin‐at least 1.5 to 2 times

larger.

5. Read the display.

NOTE

･ On releasing MEAS key, measurement is

terminated. Then, the marker is turned off
and the measurement data is held in display.

･ When the measurement value is out of the

measurement temperature range (-50 to 500

℃), the display will flash.

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Chapter 2 Making Measurements

12

―――――――――――――――――――――――――――

2.3 Continuous Measurement

1. With the power source off, the product is put
into the continuous measurement mode by
holding the MODE key down and then
pressing the MEAS key.

2. Anytime MEAS key is pressed, MEAS and

HOLD modes toggled.

NOTE

･ An auto power off function does not operate

in the continuous measurement mode. Be
sure to return to HOLD mode. The power goes

off after 15 seconds.

･ During the continuous measurement mode,

the laser marker (3415-02) or LED marker
(3416-02) is not turned on. (Marker is turned
on whenever MEAS key is pressed.)

2.4 How to Specify the Thermal
Emissivity(ε)

1. Stick black body tape on the object whose
temperature is to be measured, or spray it
with black body spray.

2. Set the thermal emissivity value(ε)onthe

display screen to the value indicated on black
body tape (black body spray).

3. Press the MEAS key, so as to measure the
temperature (T
body tape (or black body spray) is applied.

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Chapter 2 Making Measurements

)ofthe partonwhichblack

real

―――――――――――――――――――――――――――

4. Measure the temperature (T) of the parts to
which black body tape (or black body spray) is

not applied.

5. Change the thermal emissivity (ε).

6. The value of the thermal emissivity (ε)at

which T comes out to be equal to T
correct value for the inherent thermal
emissivity of the body whose temperature is
to be measured.

real

is the

13

2.5 Setting the Upper and Lower Alarm
Temperatures

1. Press the MODE key, repeatedly if necessary,
until the ALM↑mark or the↓ALM mark, as

desired, appears.

2. Press the ▼ key or the ▲ keytosetthe

temperature for the upper or lower limit
alarm.

2.6 Displaying the Maximum and
Minimum Temperatures

1. Press the MODE key, repeatedly if necessary,
until the MAX mark or the MIN mark, as

desired, appears.

2. The maximum (or minimum) temperature
during measurement will be displayed on the

display.

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Chapter 2 Making Measurements

14

(

)

―――――――――――――――――――――――――――

2.7 Switching Between Celsius and
Fahrenheit

･ If, with the power off, the MEAS key is

pressedtoturnthepoweronwhilethe▲ key

is being held down, the temperature display
will be set to show the temperature in

degrees Celsius (℃).

･ However if, with the power off, the MEAS key

ispressedtoturnthepoweronwhilethe▼

key is being held down, the temperature
display will be set to show the temperature in

degrees Fahrenheit (°F).

2.8 Switching On the Laser Marker
Beam

Switch the laser marker beam on and off by

pressing the ▲ key during measurement, or

while the display shows HOLD, MAX,orMIN.
While the laser marker beam is on, the mark
appears in the display.

3415-02

2.9 Turning the Power Off

The product has an auto power off function.
The power goes off after 15 seconds if no
control action is performed.
If you need to check the measured
temperature value again, just press the

MEAS key once.

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Chapter 2 Making Measurements

―――――――――――――――――――――――――――

15

NOTE

･ During measurement, the auto power off

function does not operate.

2.10 Changing the Batteries

DANGER

When changing the batteries, be careful not to
press the MEAS key by mistake.
It is very dangerous to allow the laser beam to
shine into your eyes or those of another person.
Also, after changing the batteries, be sure to
close the cover before using the product.

WARNING

Do not mix old and new batteries, or different

･

types of batteries. Also, be careful to observe
battery polarity during installation. Otherwise,
poor performance or damage from battery
leakage could result.

To avoid the possibility of explosion, do not

･

short circuit, disassemble or incinerate
batteries.

Handle and dispose of batteries in accordance

･

with local regulations.

――――――――――――――――――――――――

Chapter 2 Making Measurements

16

―――――――――――――――――――――――――――

・Refer to the figure and follow the following

procedure to change the batteries:

Lower case

R03×4
batteries

Rear lid

Rear lid

1. Lay the product down with the lower case
(the bottom surface of the product)
uppermost, and remove the rear lid.

2. Change the batteries, while being sure to put
them in the right way round.

3. Close the rear lid again.

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Chapter 2 Making Measurements

―――――――――――――――――――――――――――

17

Chapter 3

Specification

3.1 General Specification 3415-02

Product type

Measurement
temperature range

Display resolution

Temperature and
humidity for
guaranteed accuracy

Guaranteed accuracy
period

Accuracy of
measurement

201 to 500

0to200

-50 to -1

Repeatability

Diameter of field of
measurement

3415-02 Emission Temperature
HiTester

(2-beam laser marker type)

-50 to 500℃ (-58 to 932°F)

1℃
23℃±5℃ (73

80% RH or less

1year

℃

±1% rdg.

℃

±2℃

℃

±10%rdg. ±2℃
ε=1.0, temperature of case 23±5
℃, ambient humidity 55 %rh

±1℃ (0 to 500℃)
±2℃ (-50 to -1℃)

72 mm at 1000 mm

±9

),

Detection element /
optical lens

Measurement
wavelength

Sampling rate

Response time

――――――――――――――――――――――――

thermopile / silicon

8to16μm

2 times/second

1.5 seconds (95% response)

Chapter 3 Specification

18

―――――――――――――――――――――――――――

Sighting

2-beam laser marker (class 2)

Thermal emissivity
compensation

Upper and lower limit
alarm function

Auto power off

Other functions

Power source

Maximum rated power

Batt-Lo light flashing
voltage

Ambient temperature
for use

Ambient humidity for
use

0.10 to 1.00 by steps of 0.01

setting range -55 to 505℃

15 seconds (except when set to
continuous measurement mode)

Instant, hold, maximum,
minimum, selectable
Celsius/Fahrenheit selection

Fo ur R03/AAA dry batteries

(1.5 VDC×4)

(Approx. 40 hours continuous
operation, with laser marker not
illuminated)

342mVA (max.)

4.4±0.2V

0to40℃

35 to 85% rh; no condensation

Storage temperature

Location for use

Dimensions

Mass

Applicable standards

Accessories supplied

――――――――――――――――――――――――

Chapter 3 Specification

-20 to 55℃; no condensation

Indoor, altitude up to 2000 mm
(6562 feet)

Approx. 40W×170H×36D mm
Approx. 1.57"W×6.69"H×1.42"D

Approx. 140 g (excluding batteries)
Approx. 4.9 oz.(excluding batteries)

EMC:
EN61326:1997+A1:1998+A2:2001+
A3:2003

instruction manual
carrying case,
batteries (4 standard dry cells,

R03/AAA×4)

―――――――――――――――――――――――――――

19

3.2 General Specification 3416-02

Product type

Measurement
temperature range

Display resolution

Temperature and
humidity for
guaranteed accuracy

Guaranteed accuracy
period

Accuracy of
measurement

201 to 500

0to200

-50 to -1

Repeatability

Diameter of field of
measurement

3416-02 Emission Temperature
HiTester

(LED spot marker type)

-50 to 500℃ (-58 to 932°F)

1℃
23℃±5℃ (73

80% RH or less

1year

℃

±1% rdg.

℃

±2℃

℃

±10%rdg. ±2℃
ε=1.0, temperature of case 23±5
℃, ambient humidity 55 %rh

±1℃ (0 to 500℃)
±2℃ (-50 to -1℃)

2.5 mm at 30 mm

±9

),

Detection element /
optical lens

Measurement
wavelength

Sampling rate

Response time

Sighting

Thermal emissivity
compensation

――――――――――――――――――――――――

thermopile / silicon

8to16μm

2 times/second

1.5 seconds (95% response)

red LED spot marker

0.10 to 1.00 by steps of 0.01

Chapter 3 Specification

20

―――――――――――――――――――――――――――

Upper and lower limit
alarm function

setting range -55 to 505℃

Auto power off

Other functions

Power source

Maximum rated power

Batt-Lo light flashing
voltage

Ambient temperature
for use

Ambient humidity for
use

Storage temperature

Location for use

15 seconds (except when set to
continuous measurement mode)

Instant, hold, maximum,
minimum, selectable
Celsius/Fahrenheit selection

Fo ur R03/AAA dry batteries

(1.5 VDC×4)

(Approx. 40 hours continuous
operation, with LED marker not
illuminated)

180 mVA (max.)

4.4±0.2V

0to50℃

35 to 85% rh; no condensation

-20 to 55℃; no condensation

Indoor, altitude up to 2000 mm
(6562 feet)

Dimensions

Mass

Applicable standards

Accessories supplied

――――――――――――――――――――――――

Chapter 3 Specification

Approx. 40W×170H×36D mm
Approx. 1.57"W×6.69"H×1.42"D

Approx. 140 g (excluding batteries)
Approx. 4.9 oz.(excluding batteries)

EMC:
EN61326:1997+A1:1998+A2:2001+
A3:2003

instruction manual
carrying case,
batteries (4 standard dry cells,

R03/AAA×4)

―――――――――――――――――――――――――――

21

3.3 General Specification 3418-01

Product type

Measurement
temperature range

Display resolution

Temperature and
humidity for
guaranteed accuracy

Guaranteed accuracy
period

Accuracy of
measurement

201 to 500

0to200

-50 to -1

Repeatability

Diameter of field of
measurement

3418-01 Emission Temperature
HiTester

(standard type)

-50 to 500℃ (-58 to 932°F)

1℃
23℃±5℃ (73

80% RH or less

1year

℃

±1% rdg.

℃

±2℃

℃

±10%rdg. ±2℃
ε=1.0, temperature of case 23±5
℃, ambient humidity 55 %rh

±1℃ (0 to 500℃)
±2℃ (-50 to -1℃)

72 mm at 1000 mm

±9

),

Detection element /
optical lens

Measurement
wavelength

Sampling rate

Response time

Sighting

Thermal emissivity
compensation

――――――――――――――――――――――――

thermopile / silicon

8to16μm

2 times/second

1.5 seconds (95% response)

None

0.10 to 1.00 by steps of 0.01

Chapter 3 Specification

22

―――――――――――――――――――――――――――

Upper and lower limit
alarm function

setting range -55 to 505℃

Auto power off

Other functions

Power source

Maximum rated power

Batt-Lo light flashing
voltage

Ambient temperature
for use

Ambient humidity for
use

Storage temperature

Location for use

15 seconds (except when set to
continuous measurement mode)

Instant, hold, maximum,
minimum, selectable
Celsius/Fahrenheit selection

Fo ur R03/AAA dry batteries

(1.5 VDC×4)

(Approx. 40 hours continuous
operation)

72 mVA (max.)

4.4±0.2V

0to50℃

35 to 85% rh; no condensation

-20 to 55℃; no condensation

Indoor, altitude up to 2000 mm
(6562 feet)

Dimensions

Mass

Applicable standards

Accessories supplied

――――――――――――――――――――――――

Chapter 3 Specification

Approx. 40W×170H×36D mm
Approx. 1.57"W×6.69"H×1.42"D

Approx. 140 g (excluding batteries)
Approx. 4.9 oz.(excluding batteries)

EMC:
EN61326:1997+A1:1998+A2:2001+
A3:2003

instruction manual
carrying case,
batteries (4 standard dry cells,

R03/AAA×4)

―――――――――――――――――――――――――――

23

Chapter 4

Maintenance and

Service

WARNING

Adjustments and repairs should be made only

･

by technically qualified personnel.

If the protective functions of the product are

･

damaged, either remove it from service or mark
it clearly so that others do not use it
inadvertently.

――――――――――――――――――――――――

Chapter 4 Maintenance and Service

24

―――――――――――――――――――――――――――

CAUTION

To clean the product, wipe it gently with a soft cloth

･

moistened with water or mild detergent. Never use
solvents such as benzene, alcohol, acetone, ether,
ketones, thinners or gasoline, as they can deform
and discolor the case.

To avoid corrosion from battery leakage, remove

･

the batteries from the product if it is to be stored for
a long time.

If the product seems to be malfunctioning, confirm

･

that the batteries are not discharged before
contacting your dealer or Hioki representative.

When sending the product for repair, remove the

･

batteries and pack carefully to prevent damage in
transit. Include cushioning material so the
instrument cannot move within the package. Be
sure to include details of the problem. Hioki cannot
be responsible for damage that occurs during
shipment.

If the lens is dirty, clean dust etc. off it using a

･

camera lens cleaning tissue, blower or similar
means.

If the lens is very dirty, clean it using a cotton bud

･

containing a small quantity of alcohol.

――――――――――――――――――――――――

Chapter 4 Maintenance and Service

―――――――――――――――――――――――――――

25

4.1 Troubleshooting

Problem Cause Solution

No display

Measured
temperature
value peculiar

The display
shows "Err"

Service

･

If the above shown solutions fail to solve the
problem, it is possible that your product is
malfunctioning. Please contact your sales

agent or the manufacturer to arrange for
repair.

･

Batteries

exhausted, poorly
contacting, or
wrongly inserted.

･

Lens dirty

･

A heat source such

asahigh
temperature body
is present close
by.

･

The thermal

emissivity value is
not appropriate.

･

The product is

faulty.

･

Change the

batteries, or insert
them correctly.

･

Clean the lens.

･

Intercept radiation

from the heat
source by using an
insulation plate etc.

･

Set the thermal

emissivity to an
appropriate value.

･

Contact a service

facility.

――――――――――――――――――――――――

Chapter 4 Maintenance and Service

26

―――――――――――――――――――――――――――

4.2 Questions and Answers about
Measurement

Q: Why can't I measure the temperature on the

other side of a glass pane?

A: Normal glass absorbs infrared radiation of the

wavelength (8 to 16μm) which this device
uses for temperature measurement.
Therefore this device cannot measure the
temperature of an object on the other side of
a glass sheet, but instead measures the
temperature of the glass sheet itself.

Q: Light is shining on an object. Why can't I

measure its temperature accurately?

A: Since fluorescent light includes almost no

infrared radiation, it has almost no effect
upon normal temperature measurement.
However sunlight and incandescent lights
emit radiation which includes substantial
amounts of the infrared radiation used by this
device for temperature measurement, and
accordingly may produce significant
measurement discrepancies.

――――――――――――――――――――――――

Chapter 4 Maintenance and Service

―――――――――――――――――――――――――――

27

Q: Why can't I measure the temperature of a

gas, vapor, or flame?

A: Since gases, vapors, and flames are

transparent to infrared radiation, their
temperatures cannot be measured in this

way.

Q: Why can't I measure temperature through

rain or fog?

A: Since rain and fog reflect and absorb infrared

radiation, accurate measurement through
them is impossible.

Q: Doesn't the measurement distance affect the

resulting measured value for temperature?

A: Air hardly absorbs at all infrared radiation of

the wavelengths (8 to 16μm) used by this
device for temperature measurement.
Therefore accurate temperature measurement
is possible, irrespective of the measurement
distance.

――――――――――――――――――――――――

Chapter 4 Maintenance and Service

28

―――――――――――――――――――――――――――

――――――――――――――――――――――――

Chapter 4 Maintenance and Service

HIOKI 3415-02, 3416-02, 3418-01

TEMPERATURE HiTESTER

Instruction Manual

Publication date: August 2006 Revised edition 2

Edited and published by HIOKI E.E. CORPORATION

Technical Support Section

All inquiries to International Sales and Marketing Department

81 Koizumi, Ueda, Nagano, 386-1192, Japan

TEL: [phone] / FAX: [phone]

E-mail: [e-mail]

URL http://www.hioki.co.jp/

Printed in Japan 3415C980-02

All reasonable care has been taken in the production of this manual,
but if you find any points which are unclear or in error, please
contact your supplier or the International Sales and Marketing
Department at HIOKI headquarters.
In the interests of product development, the contents of this manual
are subject to revision without prior notice.
Unauthorized reproduction or copying of this manual is prohibited.

2003-01 改訂  枠消す

HEAD OFFICE

81 Koizumi, Ueda, Nagano 386-1192, Japan
TEL [phone] / FAX [phone]
E-mail: [e-mail] / URL http://www.hioki.co.jp/

HIOKI USA CORPORATION

6 Corporate Drive, Cranbury, NJ 08512, USA
TEL [phone] / FAX [phone]

3415C980-02 06-08H

Printed on recycled paper