Uni-T UT303E Bedienungsanleitung

Uni-T Thermometer UT303E

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Emissivity
Distance and Spot Size
Field of View
To contact Uni-Trend. call (852) 2950 9168 or visit Uni-
Trend web site at www.uni-trend.com
Introduction
The Model UT301A/B/C,UT302A/B/C/ D and
UT303A/B/C/D/E Infrared Thermometers (hereafter referred
to as "the Thermometer") can determine the surface
temperature by measuring the
amount of infrared energy
radiated by the target surface. They have different
Distance to Spot(D:S) ratios and
different temperature ranges, read the manual for details.
The Thermometer is a non-contact infrared instrument
designed with low power consumption, which can make
the measurements much faster and easier and meanwhile
save you amount of time from frequent battery replacement.
It can be powered by the battery or the source with USB
connected to.
This Manual uses UT303A/B/C/D/E as illustration.
Contacting Uni-Trend
Warning
Safety Information
A warning identifies conditions and actions that
pose hazards to the user. To avoid electrical
shock or personal injury, follow these guidelines:
Do not point the laser toward anyone's eye or allow
the laser to strike the eye from a reflective surface.
Before using the Thermometer inspect thecase.
Do not use the Thermometer if it appearsdamaged.
Look for cracks or missing plastic.
Replace the battery as soon as the battery
indicator appears.
Do not use the Thermometer if it operates
abnormally. Protection may be impaired.
When in doubt, have the Thermometerserviced.
Do not operate the Thermometer around
explosive gas, vapor, or dust.
To avoid a burn hazard, remember that highly
reflective objects will often result in lower
than actual temperature measurements.
Do not use in a manner not specified by this
manual or the protection supplied by the
equipment may be impaired.
To avoid damaging the thermometer or the
equipment under test protect them from the
following:
EMF (electro-magnetic fields) from arc
welders, induction heaters, etc; static electricity;
thermal shock (caused by large or abrupt
ambient temperature changes-- wait for 30 minutes
for the Thermometer to stabilize before use;
placed on or near objects of high temperature.
Table 1 and Figure 1 show various symbols and safety
markings that are on the Thermometer and in this
manual.
Explanation
Risk of danger. Important information.
See Manual.
Warning. Laser
Conforms to Standards of European Union
Low Battery Indication
Symbol
Table 1. Symbols
Figure 1. Symbols and Safety Markings
Features
The Thermometer includes:
Single Laser Pointer
Intelligent USB-Powered
Level 2 White Backlight(With USB connected,)
this feature will be on automatically).
Current Temperature Plus MIN, MAX, DIF, AVG
Display Functions
Adjustable Emissivity
Trigger Locked
℃ ℉/ Selectable
Tripod mount
One 9V Battery
Thermometer features are shown in Figure 2.
Battery Cover
Display
9V 6F22 Battery
Laser
Trigger
Display
The primary display reports the current or last IR
temperature reading until the 8-second hold time
elapses.
Figure 2. Infrared Thermometer
The secondary display reports a choice of
maximum, minimum, difference between maximum and
minimum temperature or average value.
You can toggle through the maximum, minimum,
difference and average IR temperatures anytime the
display is on. The MAX, MIN, DIF and AV temperatures
are constantly calculated and updated when the trigger
is pressed. After the trigger is released, the MAX, MIN,
DIF and AV temperatures are held for 8 seconds.
A
B
C
D
C
A
D B
HOLD
SCAN
Laser ìOnî Symbol
SCAN or HOLD
oC/ oF Symbol (Cels ius/F ahrenh ei t )
Primary temperature Display
Secondary temperature Display
Emissivity LO, MED, HI
Temperature values for the MAX, MIN,
DIF, AVG
Low Battery symbol. Appears when
the battery charge is <4.5V.
Figure 3. Thermometer Display
Buttons and Connector
Figure 4. Buttons and Connector
Description
Press MODE button to toggle between MAX, MIN,
DIF, and AVG options.
Press to turn the Thermometer on againMODE
and displays the last measurement result.
Press to enter set up mode stepping through
Emissivity set up, Trigger Lock and Switching
o
C/oF set up.
Refer to the below Emissivity, Trigger Lock
and Switching
oC/oF topics for details.
Press to turn the display backlight on and off.
icon will be on and off also.
When the Thermometer enters the setup up mode,
press to select an option, refer to the below
Emissivity, Trigger Lock and Switching
oC/
o
F topics for details.
Press to turn the laser on and off. After laser
is on, will be shown.
When the Thermometer enters the user setup
mode, press to select an option, details refer
to the below Emissivity, Trigger Lock and Switching
o
C/ oF topics.
Button /
Connector
MODE
SET
Table 2. Buttons and Connector
Connect USB cable for supply power to the unit or
data transmission with the software;
Backlight will automatically turn on;
USB
port
How the Thermometer Works
Infrared thermometers measure the surface temperature
of an opaque object. The Thermometer's optics sense
infrared energy, which is collected and focused onto a
detector. The Thermometer's electronics then translate
the information into a displayed temperature reading
which appears on the display. The laser is used for
aiming purposes only.
Operating the Thermometer
Locating a Hot or Cold Spot
The Thermometer turns on when you press the trigger.
The Thermometer turns off when no activity is detected
for 8 seconds.
To measure temperature, aim the Thermometer at the
tar get, pull and hold the trigger. Release the trigger to
hold a temperature reading.
Be sure to consider distance-to-spot size ratio and filed
of view. The laser is used for aiming only.
To find a hot or cold spot, aim the Thermometer outside
the target area. Then, slowly scan across the area with
an up and down motion until you located the hot or cold
spot. See Figure 5.
Figure 5. Locating Hot or Cold Spot
As the distance (D) from the target being measured
increases, the spot size (S) of the area measured by
the unit becomes larger. The spot size indicates 90%
encircled energy. The maximum D:S is obtained when
the Thermometer is 600mm (60 in) from the target
resulting in a spot size of 20mm (2 in). See Figure 6.
Figure 6. Distance and Spot Size
Make sure that the target is larger than the spot size.
The smaller the target, the closer you should be to it.
See Figure 7.
Figure 7. Field of View
Emissivity describes the energy-emitting characteristics
of materials. Most organic materials and painted or
oxidized surfaces have an emissivity of about 0.95.
If possible, to compensate for inaccurate readings that
may result from measuring shiny metal surfaces, cover
the surface to be measured with masking tape or flat
black paint (<150
o o
C / 302 F) and use the high emissivity
setting. Allow time for the tape or paint to reach the
same temperatures as the surface beneath it. Measure
the temperature of the tape or painted surface.
If you cannot use paint or use tape, then you could
improve the accuracy of your measurements with the
emissivity selector. Even with emissivity selector, it can
be difficult to get a completely accurate infrared
measurement of a target with a shiny or metallic surface.
The Thermometer allows you to adjust the unit's
emissivity for the type of surface before measured.
Refer to Table 3. But it is only a typical case. You could
base on your own case and materials to have different
setting.
To adjust values for emissivity, follow the below
procedure:
1 .
2 .
3 .
Press to select emissivity set up, icon SET E on the
display is blinking. The Thermometer steps through
emissivity set up, trigger lock and switching
oC / oF.
Press to increase the value by 0.01 or press and
hold to access quick setting. The maximum value
is 1.00.
Press to decrease the value by 0.0 or press and
hold to access quick setting. The minimum value
is 0.10.
Table 3. Surface Emissivity
Measure Surface
METALS
Aluminum
Oxidized
Alloy A3003
Oxidized
Roughened
Brass
Burnished
Oxidized
Copper
Oxidized
Electrical Terminal Blocks
Haynes
Alloy
Inconel
Oxidized
Sandblasted
Electoropolished
Switch Setting
0.2-0.4
0.3
0.1-0.3
0.3
0.5
0.4-0.8
0.6
0.3-0.8
0.7-0.95
0.3-0.6
0.15
Iron Cast
Oxidized
Unoxidized
Molten
Iron Wrought
Dull
Lead
Rough
Oxidized
Molydbenum
Oxidized
Nickel
Oxidized
Platinum
Black
Steel
Cold-Rolled
0.6-0.95
0.2
0.2-0.3
0.9
0.4
0.2-0.6
0.2-0.6
0.2-0.5
0.9
0.7-0.9
Iron
Oxidized
Rusted
NON-METALS
Asbestos
Asphalt
Basalt
Carbon
Unoxidized
Graphite
Carborundum
Ceramic
Clay
Concrete
Cloth
0.5-0.9
0.5-0.7
0.95
0.95
0.7
0.8-0.9
0.7-0.8
0.9
0.95
0.95
0.95
0.95
Ground Sheet
Polished Sheet
Zinc
Oxidized
Glass
Plate
Gravel
Gypsum
Ice
Limestone
Paper (any colour)
0.4-0.6
0.1
0.1
0.85
0.95
0.8-0.95
0.98
0.98
0.95
Plastic
Opaque
Soil
Water
Wood, (natural)
0.95
0.9-0.98
0.93
0.9-0.95
Measure Surface Switch Setting
To lock or unlock the trigger, follow the below dures:proce
1. Press to select trigger lock setting, the isSET
blinking.
2. Press to select ON or OFF.
When the trigger is locked, the Thermometer is on for
cont uous as ement, there is no need to pull thein me ur
trigger.
When the trigger is unlocked, user needs to pull the
trigger for measurement. When you release the trigger,
the Thermometer will keep hold the measurement result
automatically.
1. Press to choose SET oC / oF selection mode,
2. Press to select oC or oF.
The display will remain activated 8 seconds after the
trigger is ased. HOLD pears in the upper middlerele ap
of the display. When the trigger is pulled again, the
Thermometer will begin measuring in the last function
selected.
Typical Measurements
This section describes a variety of rements oftenmeasu
performed by technicians.
User could select to turn on or off the backlight and
laser never you are making dings with thewhe rea
Thermometer. But if you are using USB to power
up the T mometer, the Level 2 white backlighther
will be on automatically.
Relatively high emissivity normally means emissivity
setting of about 0.95.
Relatively low emissivity mally means emissivitynor
setting of about 0.30.
When user cannot identify the emissivity of the object
Trigger Lock
Swithing
HOLD
Tips:
to be measured, user could cover the surface to be
measured (temperature >150
oC) with black electric
tape (emissivity of about 0.95). Allow time for the
tape to reach the same temperature as the object to
be measured. Measure and record the temperature
of the tape.Target the Thermometer to the object to
be measured, adjust the emissivity setting to make it
as the same temperature as the tape. At this time,
the Thermometeremissivity setting is close to the
emissivity of the object to be measured, meas ement ur
could be started.
1.
2.
3.
4.
Press SET to select emissivity. Press / to select
relatively low emissivity for bright contacts, or 0.7
mid level for darkened contacts.
Press to select MAX.MODE
Measure line and load side of one pole without
releasing trigger.
A t perature difference between the line and loadem
sides of a pole indicate increased resistance of
one point and a contactor may be failing.
1.
2.
3.
4.
5.
Press SET and then press / to set ssivity toemi
relatively low for uninsulated connectors or relatively
high for plastic encased relays or for bakelite
enclosed relays or insulated connectors .
Press to select MAX.MODE
Start to scan.
Measure the relay casing, looking for hot spots.
Measure electrical connections on relay terminals
looking for hot spots.
1.
2.
3.
4.
5.
Press and then press SET / to set issivity toem
relatively high for paper covered fuse body or
insulated connections.
Press to select MAX.MODE
Scan the paper covered length of fuse.
Without leasing the trigger, scan each fuse.re
Unequal temperatures between fuses may indicate
voltage or amperage imbalance.
Press and then press SET / to set ssivity toemi
relatively low, for metal fuses and caps and insulated
Testing Contactors (Starters)
Testing Enclosed Relays
Testing Fuses and Buss Connections
6.
7.
buss connections.
Press to select MAX.MODE
Scan each end cap on each fuse/
Press and then press SET / to set emissivity to
relatively low for sulated connectors or bussunin
connections or relatively high for insulated
connections.
1.
Scan the conductor, moving toward direction of
electrical connector (quick connect, wire nut, buss
connection, or lug).
2.
Turn off heating, cooling, and blower.
Press to select emissivity. Press SET / to select
emissivity relatively high for painted surfaces or
window surfaces.
Press to select MIN when opposite side of MODE
wall is at lower temperature and or select MAX when
opposite side of wall is at higher temperature.
Measure an interior partition wall surface temperature.
Do not lease the trigger. Record this t peraturere em
as your baseline (or benchmark) for a ìperfectlyî
insulated wall.
Face the wall to be scanned. Stand 1.5m away to
scan a 5cm spot on the wall.
Scan horizontal rows of wall from top to bottom, or
horizontal rows of ceiling from wall to wall. Look for
greatest deviations from baseline t perature toem
identify lems. This prob completes the insulation test
scan.
1.
2.
3.
4.
5.
6.
Testing Electrical Connections
Scanning Walls for Air Leaks or Insulation
Deficiencies
Turn on the blower (no heat, no cooling) and retest. If
test results with the blower on are different than results
with the blower off, this may indicate air leaks in
conditioned envelope walls. The air leaks are caused
by duct leaks that create a pressure differential across
the conditioned space envelope.
Warning
To avoid injury when testing bearings:
Do not wear loose clothing, jewelry, or anything
around neck when working around moving parts
such as motors, belts, blower, and f ans.
Make sure an electrical disconnect is within
reach and operating correctly and freely.
Do not work alone.
Press and then press SET / to select relatively
high emissivity.
Press to select MAX.MODE
Enable motor and allow it to reach steady state
operating temperatures.
Disable the motor if possible.
Measure the two motor aring t peraturesbe em
Co be emmpare the two motor aring t peratures.
Un em emequal t peratures or a high t perature can
indicate a lubrication or other bearing problem that
is resulting from excess friction.
Repeat the s uence for the blower rings.eq bea
1.
2.
3.
4.
5.
6.
7.
Testing Bearings
Testing Belts and Sheaves
Checking Hydronic Radiant Heat Applications
Measuring Grille,Register,or Diffuser Discharge
Temperature
Press and then press SET / to select relatively
high emissivity.
Press to select MAX.MODE
Enable the motor and allow it to reach a steady
state operating temperatures.
Aim the Thermometer at the surface to be measured.
Start recording temperature
Slowly move the Thermometer up the belt toward
second sheave.
1.
2.
3.
4.
5.
6.
If belt is slipping, sheave temperature will be
high from friction.
If belt is s ping, belt t perature will remainlip em
high between sheaves.
If belt is not s ping, belt t perature will reducelip em
between sheaves.
If inner surfaces of sheaves are not a true ìVî
shape, this indicates belt s ppage anli d will
continue to operate at elevated t peraturesem
until sheave is replaced.
Sheaves must be properly aligned (include ìpitch
& yawî) for belt and sheaves to operate at appropriate
temperatures. A straight edge or taut string, can be
used to check alignments.
Motor sheave should operate at a temperature
consistent with blower sheaves.
If motor sheave is at a higher t perature at motorem
shaft than at outer circumference, belt is probably
not slipping.
If outer circumference of sheave is at higher
t peraturem e than sheave at motor shaft, then belt
is probably s pping and sheaves may be mis igned.li al
1.
2.
3.
4.
Press and then press SET / to select relatively
high emissivity.
Press to select MAX.MODE
To locate radiant heat tubes in floor, temporarily
elevate the loop t perature to create hotter spotsem
for identifying tubing runs.
Before releasing trigger, press MODE to toggle
between MIN, MAX, DIF floor t peratures andem
record the temperature for future comparison and
trending under similar conditions.
Radiant heat tubes in the floor will normally run rallelpa
to the outside walls. Starting at the floor wall juncture,
scan allel to the wall while moving into the roompar
away from the wall. P allel to the outside wall youar
should find allel isothermal rows indicating thepar
location of heat tubes below the surface. P endicularerp
to the outside wall, you should find rising and falling
temperatures at equal distances. High temperatures
indicate you are scanning a heat tube beneath the floor
surface, low falling t peratures indicate a spaceem
between the heat tubes.
1.
2.
3.
4.
5.
Press and then press SET / to select relatively
high emissivity.
Aim the T mometer at the discharge air grille,her
register, or diffuser.
Measure discharge temperature.
Release trigger to freeze the temperature reading
for 8 seconds and record this t perature.em
Grille, register, or diffuser t perature should beem
equivalent to discharge t perature at the airem
handler.
1.
2.
3.
4.
5.
6.
Remove panels to gain access to coil return bends
or hairpins.
Press SET and then press / to select relatively
high emissivity for copper tube.
Start the refrigeration system.
Aim the T mometer at coil turn bends/ rpins.her hai
Start recording temperature.
Take t perature of each return bend/ irpin.em ha
All evaporator return bends/hairpins should be
at or slightly above evaporator saturation
t perature from the pressure/t peratureem em
chart.
All condenser return bend/ rpins should behai
at or slightly less than c enser saturationond
temperature.
If a group of return bends/ rpins do not conformhai
to expected temperatures, that indicates a
blocked or restricted distributor or distributor
tube.
Maintenance
Changing the Battery
Cleaning the Lens
Cleaning the Housing
To install or change the 9V battery, open the battery
compartment the battery as shown in Figure 2.
Blow off loose particles using clean compressed air.
Carefully wipe the surface with a moist cotton swab.
The swab may be moistened with water.
Use soap and water on a damp sponge or soft cloth.
To avoid damaging the Thermometer, do NOT
submerge it in water.
Caution
Checking for Blockage in Air-To-Air
Evaporators or Condensers
Problem
Target temperature is over range
Target temperature is under range
Low Battery
Possible dead battery
1. Low or dead battery
2. Ambient t perature above 40em oC
(104oF)
Symptom
OL (on play)dis
-OL (on display)
Blank Display
Laser does not work
Action
Select target with specifications
Select target with specifications
Replace Battery
Check and / or replace battery
1. Replace battery
2. Use in area with lower ambient
temperature.
Table 4. Troubleshooting
The Thermometer conforms to the following standards:
EN61326-1 EMC
EN60825-1 Safety
Certification testing was conducted using a frequency range
of 80 to 100MHz with instrument in three orientations.
Troubleshooting
CE Certification
Measurement Range (UT301A): -18
oC to 350 o
(0o
F to 662 oF)
Measurement Range (UT301B): -18
oC to 450 o
(0oF to 842oF)
Measurement Range (UT301C): -18oC to 550 o
(0 o
F to 1022oF)
Measurement Range (UT302A): -32
o
C to 450 o
(-26oF to 842oF)
Measurement Range (UT302B): -32
o
C to 550 o
(-26oF to 1022 oF)
Measurement Range (UT302C): -32
o
C to 650 o
(-26 o
F to 1202 oF)
Measurement Range (UT302D): -32
oC to 1050o
(-26oF to 1922oF)
Measurement Range (UT303A): -32
oC to 650o
(-26oF to 1202oF)
Measurement Range (UT303B): -32
o
C to 850 o
(-26oF to 1562 oF)
Measurement Range (UT303C): -32o
C to 1050o
(-26 oF to 1922oF)
Measurement Range (UT303D): -32o
C to 1250 o
(-26oF to 2282oF)
Measurement Range (UT303E): -32o
C to 1550 o
(-26oF to 2822oF)
Spectral Range : 8 to 14 microns
Accuracy: 1.8% or (1.8oC/4oF)
Temperature than less 0
oC , Accuracy add to 1
oC(2oF)
(Assumes ambient operating temperature of 23 to
o
25 C (73 to 77oF))
Repeatability : 0.5% of reading or 1 oC/2 oF
Response Time (95%) : 250ms
Distance to Spot (D:S) (UT301A/B/C): 12:1
Distance to Spot (D:S) (UT302A/B/C/D): 20:1
Distance to Spot (D:S) (UT303A/B/C/D/E): 30:1
Specifications
Infrared
C
C
C
C
C
C
C
C
C
C
C
C
Sighting: Single point laser
Power: Class 2 (II) operation; Output <1mV, elengthwav
630 to 670mm
Power Supply : 6F22 9V Battery
Power Consumption : At least 30 hours battery life
(Alkarine), At least10 hours
battery life (General Purpose)
Weight : 0.322kg
Size : 17.69cm (H) x 16.36 cm (L) x 5.18cm (W)
Operating Temperature Range: 0oC to 50 o
(32o
F to 120 o
F)
Relative Humidity : 0 to 75% noncondensing
Storage Temperature : -20oC to 65oC (-4oF to 150 oF)
Emissivty Adjustment : 0.10~1.00
Display Resulation : 0.1 oC (0.1 o
F)
Secondary Display Information : Maximum, Minimum,
Laser
Electrical
Physical
Environmental
Differential, Average
C
This operating manual is subject to change without notice.
** END **
P/N:110401104253X DATE:2018.06.26 REV.4
序号 项目 内容
1
2
3
4
5
6
7
尺寸
材质
颜色
外观要求
装订方式
表面处理
其它
DWH
设 计 MODEL
机型:
Part NO.
物料编号:
CHK
审 核
APPRO.
批 准
说明书菲林做货要求：
版本
/
/
UT301A/B/C,UT302A/B/C/D,
UT303A/B/C/D/E 110401104253X
外尺寸:（280x350）±1mm.折叠成形尺寸:（70x175）±1mm
60g书写纸
黑色，双面印刷
印刷完整清晰,版面整洁.无分层.残损.毛边等缺陷.
风琴折（４折），再对折，封面图在外面
REV.4 修改成股份有限公司
黄荣伟2018.06.25

Produktspezifikationen

Marke: Uni-T
Kategorie: Thermometer
Modell: UT303E

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