3.6 Using the Temperature HiTESTER
with a Personal Computer
17
18
20
22
22
Chapter 4 Specification 23
Chapter 5 Maintenance and Service
5.1 Troubleshooting 27
5.2 Questions and Answers
about Measurement
25
28
i
ii
iv
v
1
3
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Introduction
Thank you for purchasing this Hioki "3443
Temperature HiTester." To get the maximum
performance from the instrument, please read this
manual first, and keep this at hand.
i
――――――――――――――――――――――――
Introduction
ii
―――――――――――――――――――――――――――
Safety Notes
WARNING
Incorrect measurement procedures could result in
injury or death, as well as damage to the
equipment. Please read this manual carefully and
be sure that you understand its contents before
using the equipment. The manufacturer disclaims
all responsibility for any accident or injury except
that resulting due to defect in its instrument.
This Instruction Manual provides information and
warnings essential for operating this equipment in a
safe manner and for maintaining it in safe operating
condition. Before using this equipment, be sure to
carefully read the following safety notes.
Safety symbols
In the manual, this mark indicates
explanations which it is particularly
important that the user read before using
the instrument.
Indicates warnings relating to the laser.
――――――――――――――――――――――――
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
WARNING
presents significant danger of accident
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 instrument, inspect it and check
the operation to make sure that the instrument was
not damaged due to poor storage or transport
conditions. If da mage is found, contact your dealer
or Hioki representative.
Inspection
When you receive this instrument, before use, please
check that no abnormality or damage has occurred
during delivery. In particular, be sure to check the
accessories, the liquid crystal display, the control
keys, and the lens.
In the unlikely event of damage, or if the instrument
does not function according to specification, you
should immediately contact the dealer from whom
you bought the instrument, or the nearest Hioki
service facility.
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Inspection
―――――――――――――――――――――――――――
Notes on Use
In order to ensure safe operation and to obtain
maximum performance from the instrument, observe
the cautions listed below.
DANGER
Operation of this instrument according to any
・
procedure not specified in this manual may
cause explosion due to dangerous laser
radiation.
The 3443 (field type instrument) 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.
v
――――――――――――――――――――――――
Notes on Use
vi
―――――――――――――――――――――――――――
WARNING
To prevent electric shock, do not allow the
・
instrument to become wet and do not use the
instrument when your hands are wet.
Ensure that protective functions are fail-safe:
・
that is to say, that if they fail they either prevent
the instrument from operating or give an
indication to prevent unwi tting operation.
CAUTION
Do not use the instrument near any device which
・
generates strong electromagnetic radiation or near
a static electrical charge, as these may cause
errors.
The instrument should always be operated indoors
・
in a range from 0
to 40and 35% to 85% RH or
less. Do not use the instrument in direct sunlight,
dusty conditions, or in the presence of corrosive
gases.
Do not store or use the instrument where it will be
・
exposed to direct sunlight, high temperatures, high
humidity, or condensation. If exposed to such
conditions, the instrument may be damaged, the
insulation may deteriorate, and the instrument may
no longer satisfy its specifications.
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Notes on Use
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CAUTION
This instrument has been constructed with some
・
vii
degree of water resistance, but if it is subjected to
direct contact with water for a long period of time,
water may get into the instrument. Further, water
drops left on the lens will cause measurement
errors. Wipe off any water drops promptly.
Do not use the instrument where it may be exposed
・
to corrosive or explosive gases. The instrument
may be damaged, or explosion may occur.
To avoid damage to the instrument, do not subject
・
the equipment to vibrations or shocks during
transport or handling. Be especially careful to avoid
dropping the equipment.
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.
・ Before use, verify that no damage has occurred due
NOTE
to careless storage or transport, and check the
appearance and operation of the instrument.
・ The
indicator flashes when the remaining
battery capacity is low. In this case, the instrument's
reliability is not guaranteed. Replace the battery
immediately.
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Notes on Use
viii
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Notes on Use
―――――――――――――――――――――――――――
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.
1
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 infrared radiation, an 8 μm cuton
filter, etc..
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Chapter 1 Summary
2
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The output signal from the infrared radiation sensor
is input to an electronic circuit along 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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1.2 Names and Functions of Parts
3443 field type unit
(1)Lens
(2)Laser port
Screw hole for camera tripod
Laser specification (spec.)
and caution label
Battery box
3
Connector cover
(inside: connector
for interface pack)
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Chapter 1 Summary
4
―――――――――――――――――――――――――――
・ Connect the cable provided with the optional 3909
NOTE
Interface Pack to the expansion box connector. For
details, please refer to the user instructions provided
with the 3909 Interface Pack.
Operating section
LCD display
(4)Mode select key
(3)
Time key
(5)Clear key
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Chapter 1 Summary
(7)Printer key
(6)
MEAS key
―――――――――――――――――――――――――――
(1) Lens
Infrared rays from the object whose temperature is
to be measured are received here.
(2) Laser marker beam emission openings
The laser marker beams are emitted from here.
(3) Time key
Used to set the time and to check the time of stored
data.
(4) Parameter adjust keys
Used to change the date, time, and emissivity, and
to increase/lower the memory data No.
・
key: Decreases
・
key: Increases
If either of these Parameter adjust keys is held
down, the numerical value changes rapidly in the
appropriate direction.
(5) Clear key
Used to set the date and to clear displayed memory
data.
(6)
key
MEAS
Performs measurement while
MEAS
is being
pressed.
Measured value is held when the key is released.
There is no power switch.
Pressing the
key turns ON the power. Power
MEAS
is cut OFF in about 15 sec. if the key is not pressed,
except output to printer (automatic power OFF).
5
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Chapter 1 Summary
6
―――――――――――――――――――――――――――
(7) Printer key
Pressing the
key outputs the stored data to an
P
external printer.
・ To use the printer output function, an optional 3909
NOTE
Interface Pack is required. The printer must be
provided by the user.
Printer with RS-232C interface.
Standard printers such as the EP SON PM series and
the CANON BJ series for personal computers
cannot be used.
LCD display
MEAS indicator
Laser indicator
Memory No.
indicator
Emissivity
indicator
SET indicator
TIME
indicator
Battery indicator
Measured value
indicator
indicator
FULL
LCD display
・
indicator:Displayed when measurement
MEAS
is being carried out.
・Laser indicator : Displayed when laser is not
emitted.
Blinks when laser is being
emitted.
・
indicator : Displayed together with address of
No.
data memory.
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Chapter 1 Summary
―――――――――――――――――――――――――――
・ε indicator : Appears when the thermal emissivity
is being set.
・
indicator : Blinks when date, time, and
SET
emissivity are being set.
・TIME indicator : Displayed when time is set and
the time of data memory is
displayed.
Blinks: during time operation.
・
indicator : Blinks when data memory is
FULL
full. (max. 130)
・
indicator : Unit of centigrade.
・
indicator : Theindicator flashes
when the remaining battery
capacity is low. In this case, the
instrument's reliability is not
guaranteed. Replace the battery
immediately.
・Measured value : The entire display blinks when
the measurement value falls
outside the measurement range
(-50.0 to 500.0
).
7
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Chapter 1 Summary
8
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Chapter 1 Summary
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Chapter 2
Prior to Use
Prior to operating the thermometer, carry out the
following:
1. Attaching the accessory screwdriver
Attach the accessory
screwdriver to the hand strap
so that it will not get lost.
This screwdriver is used to
remove the battery cover screws.
Attaching the screwdriver
2. Attaching the hand strap
Attach the hand strap to the
instrument to help prevent its
being dropped.
3. Loading the battery
Place the battery correctly in
the battery box at the back of
main body.
For loading the battery, refer to "2.1 Battery
Loading and Replacement".
4. Setting the date and time
For how to set the date and time, refer to "2.2
Setting the Date and Time ".
9
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Chapter 2 Prior to Use
10
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2.1 Battery Loading and Replacement
・ The thermometer does not come with the battery
loaded. Load the battery according to the procedure
described below.
・ The
battery capacity is low. In this case, the instrument's
reliability is not guaranteed. Replace the battery
immediately.
・ If the main body is wet, be sure to wipe off the
water, set the battery box facing downward so that
any water in the joint will not enter the case, and
then remove the battery cover.
Dry battery used : Manganese battery 6F22 or alkali
1. Remove the battery cover.
Loosen the screws of
the battery cover at the
back of the main body
with the accessory
screwdriver and
remove the battery
cover.
2. Replace the battery.
Remove the old
battery.
Check the polarity (+ or -) of the new battery, and
load it correctly.
3. Close the battery cover.
After the battery is loaded, close the battery cover,
and tighten the screws evenly and firmly.
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Chapter 2 Prior to Use
indicator flashes when the remaining
battery 6LR61
rubber gasket
―――――――――――――――――――――――――――
DANGER
11
When changing the battery, 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 battery, be sure to close
the cover before using the instrument.
WARNING
When changing the battery, be sure to fit the
・
battery the proper way around (i.e. with the
correct polarity).
Do not short circuit the old exhausted battery or
・
throw them into a fire; they might explode.
Dispose of the old exhausted battery in an
・
approved waste disposal facility.
CAUTION
Take care not to get the wire caught in the battery
・
cover.
Do not close the battery cover if the rubber gasket
・
is dirty or twisted. Otherwise, the water-resistance
of the instruments main body will not be maintained.
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Chapter 2 Prior to Use
12
―――――――――――――――――――――――――――
・ All settings are lost when the battery is replaced.
NOTE
After replacing the battery, please re-set the
emissivity, date and time. For details, see 2.2,
Setting the Date and Time* and 3.3, Setting
Emissivity(ε).
・ When not in use for a long time, to prevent possible
corrosion caused by battery leakage, remove the
battery before storage.
・ The battery included with 3443 have a short time.
2.2 Setting the Date and Time
When using the instrument first time or after
replacement of the battery, set the date and time.
Date
Operating procedure
1. Display the date.
Press the
key when the
C
power is OFF. The date
can then be set (the word
SET will blink).
Every time
C
key is
pressed, the setting item
changes in the order of
day → month → year.
month
year
day
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Chapter 2 Prior to Use
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13
2. Change the date.
Blinking figures can be
changed with the
keys.
3. Completing the date
setting.
Pressing the
key moves
T
to the time setting mode.
Pressing the
MEAS
key
completes the date setting.
・ Setting is also possible for a date that does not
NOTE
actually exist (for example, November 31, February
31, etc.), so confirm the date after setting it.
Time
Operating procedure
1. Display the time.
Press the
key when the
T
power is OFF. The time is
displayed, and the word
TIME will blink. Press the
key again. The time can
T
be set (the word SET will
blink).
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Chapter 2 Prior to Use
14
―――――――――――――――――――――――――――
2. Change the time.
Using the
keys, set
the present time.
Time is displayed in 24hour format.
3. Completing the time
setting.
Pressing
key moves to
C
the date setting mode.
Pressing the
MEAS
key
completes the setting.
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Chapter 2 Prior to Use
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15
Chapter 3
Making
Measurements
3.1 Start and Complete Measurement
1. When the power is off,
pressing the
turns on the power.
The values and settings on
the LCD display return to
the state before the power
was last turned off.
MEAS
key
・ If, from the power off condition, the
NOTE
――――――――――――――――――――――――
held down for more than one second, measurement
starts.
2. Point the lens at the object whose temperature is to
be measured.
3. Press the
Measurement is performed as long as the
is kept pressed.
MEAS
key.
Chapter 3 Making Measurements
MEAS
key is
MEAS
key
16
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DANGER
With the 3443, whenever the indicationis
flashing, the laser marker beam 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.
4. Aim the laser beam at the object whose temperature
is to be measured.
5. Read the display.
6. End measurement.
Measurement ends when
you release the
MEAS
key. The laser marker
beam goes off and the
current measured value is
stored under the memory
number indicated by No.
The power then goes off after 15 seconds.
・ When the measurement value is out of the
NOTE
measurement temperature range (-50.0 to 500.0
),
the display will flash.
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Chapter 3 Making Measurements
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17
3.2 Target Size and Sighting
・ Although the field of measurement and the sighting
NOTE
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.
・ The sighting beam must encompass the area to be
measured up to the max. measurement distance of
1.5 meters.
・ Even if the measurement distance is greater than 2
meters, temperature is displayed as a mean value of
the target size if there is no substance to absorb or
interrupt the infrared ray from the object being
measured.
Sighting pitch
Distance
Target size
distance0.5 m1m1.5 m2m
Target
size
Sighting
pitch
20 mm
φ
34 mm41 mm48 mm55 mm
24 mm
φ
48mm
φ
80 mm
φ
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Chapter 3 Making Measurements
18
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3.3 Setting Emissivity (ε)
Each substance has particular emissivity. Precise
measurement requires appropriate setting.
1. Displaying emissivity (ε)
With the power off,
display the emissivity
setting by pressing the
while pressing and
MEAS
holding the
begins flashing.
2. Setting emissivity (ε)
Numerals can be changed
with the
3. Completing setting of
emissivity (ε)
Press the
complete the setting.
Measurement can be
started immediately.
P
MEAS
key. SET
key.
key to
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Chapter 3 Making Measurements
―――――――――――――――――――――――――――
Substance Thermal
emissivity
Asphalt0.90 to 0.98Charcoal
Concrete0.94Lacquer0.80 to 0.95
Cement0.96Lacquer (matt) 0.97
Sand0.90Rubber (black) 0.94
Earth0.92 to 0.96Plastic0.85
Water0.92 to 0.96Timber0.90
Ice0.96 to 0.98Paper0.70 to 0.94
Snow0.83Aluminium
Glass0.90 to 0.95Chromium
Ceramic0.90 to 0.94Copper oxides 0.78
Marble0.94Iron oxides0.78 to 0.82
Fluorite0.30 to 0.40Ni ckel oxides 0.90
Plaster0.80 to 0.90Titanium
Mortar0.89 to 0.91Zinc oxides0.11 to 0.28
Brick (red)0.93 to 0.96Brass oxides0.56 to 0.64
Textiles0.90Uneven
Cloth (black)0.98Rolled
Human skin0.98Heavily rusted
Leather0.75 to 0.80
Substance Thermal
emissivity
(powder)
oxides
oxides
oxides
bronze
surfaces
stainless steel
iron
0.96
0.76
0.81
0.40 to 0.60
0.55
0.45
0.69
19
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Chapter 3 Making Measurements
20
―――――――――――――――――――――――――――
・ Variations in the surface condition and color of the
NOTE
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 temperature measurement is desired for an
object whose thermal emissivity is not known, black
body tape (sold separately) should be used. In this
case the setting for thermal emissivity (ε) should be
the value indicated on black body tape.
3.4 Storing the Data
Releasing the
completes the
measurement and stores
the measured value in the
address indicated by
memory "No." Data can
be stored in any address
(1 to 84) by changing the
No. using the
Further, multiple data can be stored in the same
address.
・ The maximum number of measurements that can be
NOTE
stored is 130. A maximum of 130 measurements can
be stored in memories No. 1 to No. 64.
・ It is recommended to clear all memory data before
storing new data.
・ When the battery is runs out, all memory data is
lost.
MEAS
key
keys.
――――――――――――――――――――――――
Chapter 3 Making Measurements
―――――――――――――――――――――――――――
21
Displaying data memory
The data of the last
memory No. in the stored
data can be displayed
using the
keys.
Data in the same No. can
be displayed using the
keys while pressing the
T key. The time of data
memory is displayed.
Clearing the data memory
Pressing the
key clears
C
the displayed data.
Display the past data in
the same memory No. by
pressing the
with the
T
Then, press the
keys
key held down.
key.
C
The displayed data will be
cleared.
Clearing data memory completely
All the stored data can be cleared by pressing the
key while pressing theorkey when
MEAS
the power is OFF.
・ Press theCkey with thePkey held down when the
NOTE
power is OFF. The date can be confirmed after the
data memory has been completely cleared.
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Chapter 3 Making Measurements
22
―――――――――――――――――――――――――――
3.5 Turning the Power Off
The instrument 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
・ During measurement, the auto power off function
NOTE
does not operate.
MEAS
key once.
3.6 Using the Temperature HiTESTER
with a Personal Computer
Using the optional 3909 Interface Pack, you can
transfer measurements stored in the 3443 memory to
a personal computer for processing.
The 3909 Interface Pack consists of a modular
cable, an expansion box, and the TEMP software
utility for loading data into the PC.
1. Using the modular cable, expansion box, and
an optional RS-232C null-modem cable, connect
the 3443 to the serial port on your personal
computer.
2. Start up the TEMP utility (data import software)
included with the 3909.
The TEMP utility makes it easy to transfer data and
manage it on your personal computer.
Data can also be imported into for processing Excel.
Excel is a registered trademark of Microsoft
Corporation.
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Chapter 3 Making Measurements
―――――――――――――――――――――――――――
23
Chapter 4
Specification
Product type3443 T em p era t u r e Hi Te ste r
Detector / optical lens t h erm opi le / silicon
Measurement
wavelength
Measurement
temperature range
Display resolution0.1
Guaranteed accuracy
period
Accuracy of
measurement
200.1 to 500.0
0.0 to 200.0
-50.0 to -0.1
Repeatability0.5( (0.0 to 500.0 )
Response timeMax. 1.6 s (95% response)
Target size24 3 m m/m (90% energy limit)
Sighting2-beamlasermarker(class2)
Data memory1 to 64 (multiple da ta c an be stored
Number of memory130 (total of No. 1 to No. 64)
Displayable memory
content
Thermal emissivity
compensation
(Field Type)
8to16μm
-50.0 to 500.0(-58 to 932 )
1year
(except w he n bat t er y m a r k is
blinking)
1% rdg .
2
v10%rdg.2
ε=1.0, temperature of case 23
ambient humidity 55 %RH
1(-50.0 t o -0.1 )
in the same No.)
No. + measu red value + time
Normally fixed a t 0.95 (can be
chan ged in 0.10 to 1 .00 wit h t h e
keys)
5 ,
――――――――――――――――――――――――
Chapter 4 Specification
24
―――――――――――――――――――――――――――
Auto power offapprox. 15 sec. (HOLD and SET
Sampling rate1.25 times/second
Other functionsDate setting, time setting, memory
Power sourceR at ed su pp ly voltage 9 VDC x 1
Maximum rated power 252 mVA (max.)
Battery lifeApprox.20 hours under continuous
Ambient temperature
and humidity for use
Storage temperature-20 to 5 5(-4 to 132 ); no
Location for useIndoor, altitude up to 2000 mm
Dimensions47 W x 200 H x 48 D mm (1.85" x
Applicable standardsEMC:
Accessories supplied instruction man ual, Carrying case,
Options3909 Interfa ce Pac k, Black body
mode)
clear, memory full display, prin ter
outp ut , RS-232C interfac e : *1
6F22 man ganese battery x 1
6LR61 alkalin e batt ery x 1
operation at sighted lighting (alkali
battery)
0to40 (32 to 104 ),
35 to 85% RH; no condens ati on
condensation
(6562-ft.)
7.87" x 1.89") app ro x.
battery)
EN61326
Hand Strap, 6F22 manganese
battery, screwdriver (for remove th e
battery cover)
tap e, AC Adapt er (AC-10), 9442
Printer, 9443-02 AC Adapter (for
prin ter), 9444 Connect ion Cable (for
printer)
*1 : To use the printer output function and RS-232C
interface, an optional expansion kit is required.
*2 : IP54:No harmful influence when splashed from
any direction(based on IEC529 (1989))
――――――――――――――――――――――――
Chapter 4 Specification
―――――――――――――――――――――――――――
25
Chapter 5
Maintenance and
Service
WARNING
If the protective functions of the instrument are
damaged, either remove the instrument from
service or post warnings to prevent others from
using the instrument inadvertently.
――――――――――――――――――――――――
Chapter 5 Maintenance and Service
26
―――――――――――――――――――――――――――
CAUTION
Gently wipe dirt from the surface of the instrument
・
with a soft cloth moistened with a small amount of
water or mild detergent. Do not try to clean the
instrument using cleaners containing organic
solvents such as benzine, alcohol, acetone, ether,
ketones, thinners, or gasoline. They may cause
discoloration or damage.
When not in use for a long time, to prevent possible
・
corrosion caused by battery leakage, remove the
battery before storage.
If the instrument is not functioning properly, check
・
the battery, the probe. If a problem is found,
contact your dealer or Hioki representative. Pack
the instrument carefully so that it will not be
damaged during transport, and write a detailed
description of the problem. Hioki cannot bear any
responsibility 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 5 Maintenance and Service
―――――――――――――――――――――――――――
27
5.1 Troubleshooting
ProblemCauseSolution
No displayBatteries exhausted,
Measured
temperature
value peculiar
blinksOperating
The display
shows "Err"
poorly contacting, or
wrongly inserted.
Lens dirtyClean the lens.
A heat source such
as a high
temperature body is
present close by.
The thermal
emissivity value is
not appropriate.
temperature range (0
to 40
) exceeded.
Err0: Detection
device
malfunction
Err1: Calibration
constant error
Err2: Measurement
circuit error
Err3: Software error
ErrH: Temperature
sensor error
(High
temperature)
ErrL: Temperature
sensor error
(Low
temperature)
Err-: Involatile
memory error
Errb: Backup error
Change the battery,
or insert them
correctly.
Intercept radiation
from the heat source
by using an
insulation plate etc.
Set the thermal
emissivity to an
appropriate value.
Use in operating
temperature range.
Change to new
batteries.
If the error message
still remains after the
batteries are
changed, there could
be a malfunction in
the device. Please
contact your
representative or the
nearest dealer.
――――――――――――――――――――――――
Chapter 5 Maintenance and Service
28
―――――――――――――――――――――――――――
Service
・
If the above shown solutions fail to solve the
problem, it is possible that your instrument is
malfunctioning. Please contact your sales agent or
the manufacturer to arrange for repair.
5.2 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 16 μm) 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 5 Maintenance and Service
―――――――――――――――――――――――――――
29
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 16 μm) used by this device for
temperature measurement. Therefore accurate
temperature measurement is possible, irrespective of
the measurement distance.
――――――――――――――――――――――――
Chapter 5 Maintenance and Service
30
―――――――――――――――――――――――――――
――――――――――――――――――――――――
Chapter 5 Maintenance and Service
HIOKI 3443 TEMPERATURE HiTESTER
Instruction Manual
Publication date: September 2008 Revised edition 4
Edited and published by HIOKI E.E. CORPORATION
Technical Sales Support Section
All inquiries to International Sales and Marketing
Department
81 Koizumi, Ueda, Nagano, 386-1192, Japan
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.
・
The content of this manual is protected by copyright. No
reproduction, duplication or modification of the content is
permitted without the authorization of Hioki E.E.
Corporation.
HEAD OFFICE
81 Koizumi, Ueda, Nagano 386-1192, Japan
TEL +81-268-28-0562 / FAX +81-268-28-0568
E-mail: os-com@hioki.co.jp/
URL http: //www.hioki.com/
HIOKI USA CORPORATION
6 Corporate Drive, Cranbury, NJ 08512, USA
TEL +1-609-409-9109 / FAX +1-609-409-9108
3443A980-04 08-09H
Printed on recycled paper
※お問い合わせは、最寄りの営業所または本社販売企画課まで。
3443A980-04 08-09H
この取扱説明書は再生紙を使用しています。
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