Unit UT305S User manual

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P/N:110401109910X
Overview
UT305S is a high-accuracy, high-D:S ratio (50:1), wide range (-50°C~2000 ), high repeatability, durable and °C
easy-to-operate infrared thermometer (hereinafter referred to as the thermometer) designed according to the
user's field needs. The thermometer can quickly and accurately determine the surface temperature of the target
by measuring the infrared energy radiated by the target surface, which is suitable for non-contact temperature
measurement.
UT305S
Infrared Thermometer User Manual
Safety Instructions
Warning:
In order to prevent eye damage or personal injury, please read the following safety instructions before using the
product:
1. Do not point the laser directly at persons or animals or indirectly through reflective surfaces.
2. Do not look directly at the laser or with optical tools (binoculars, microscopes, etc.).
LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
λ=630-670nm,<1mW, EN60825-1:2014
Caution:
If the laser irradiates the user’s eyes, please close the eyes immediately and turn the head away.
Do not disassemble or refit the product and laser without permission.
To ensure its safety and accuracy, this product should only be repaired by professional maintenance personnel
using original replacement parts.
Replace the batteries when the low battery indicator shows to prevent incorrect measurements.
Please check the product before using it. If it is damaged, cracked on the surface or missing plastic parts, do
not use it.
Please refer to the emissivity information for the actual temperature. Highly reflective objects or transparent
materials will make the actual temperature higher than the measured temperature. When measuring these objects,
pay attention to the risk of burns.
Do not use the product in an environment with flammable and explosive liquid, gas or dust.
Do not use the product around the environment with steam, dust, or large temperature fluctuations. It may bring
inaccurate results and risks.
Put the product in the current environment for more than 30 minutes before using it to ensure measurement
accuracy.
Do not leave the thermometer on or near objects of high temperature.
Model
Optical resolution
Measurement range
LCD size
LCD display
Accuracy
Temperature index
Repeatability
Emissivity
Response time
Spectral response
Auto power off
UT305S
50:1
-50°C~2000 (-58°F~3632 )°C °F
35*35mm
High-contrast color EBTN
-50 ~0 : ±(1.0 +0.1 / )°C °C °C °C °C
0 ~2000 : ±1.0 or ±1.0% (take the larger value)°C °C °C
-58 ~32 : ±(2.0 +0.1 / )°F °F °F °F °F
32 ~3632 : ±2.0 or ±1.0% (take the larger value)°F °F °F
±0.1 / or ±0.1%/ take the larger value
(±0.1°F/°F or ±0.1%/°F take the larger value)
°C °C °C
0.5 or 0.5% take the larger value
(1.0°F or 0.5% take the larger value)
°C
0.1~1.0 (adjustable, stores 5 sets of preset values)
≤250ms (95% of reading)
8μm~14μm
15s
Low battery indication
High/low temperature LED alarm
High/low temperature sound alarm
Data hold
Unit conversion ( / )°C °F
MAX/MIN/AVG/DIF
Lock measurement
Laser
Operating temperature
Storage temperature
Operating humidity
Drop proof
Battery type
Battery life
Product color
Product weight
Product size
Single laser, wavelength: 630nm~670nm, output power 1mW, type: class 2<
-5°C~50 (23°F~122 )°C °F
-20 ~60 (-4 ~140 )°C °C °F °F
<90%RH (non-condensing)
1m
1*1604A 9V alkaline battery
10 hours (continuous measurement mode with laser and backlight on)
Red + grey
325g
179.00×126.50×53.00mm
Safety Standards
CE certification: EN61326-1:2013; Safety standards of laser products: EN60825-1:2014
FDA: Class 2; IEC: Class 2
Reference Standard
JJG 856-2015
Characteristics
1) With single-laser and high-accuracy laser adjustment technology.
2) Bright, easy-to-read and high-contrast color EBTN display.
3) MAX/MIN/AVG/DIF hold.
4) Store 5 sets of preset values (high and low temperature alarm and emissivity) for quick setting.
5) With red, green and blue LED and buzzer sound alarm, can quickly find abnormalities.
6) Trigger lock, suitable for processes that require temperature monitoring.
7) Equipped with a tripod mounting hole.
Laser
Infrared receiving window
Trigger
Battery cover
Tripod mounting hole
LCD display
SET button
MODE button
Laser switch button
HI/LO button
Laser warning label
Appearance
Trigger lock
Buzzer
Temperature measurement alarm
Low battery
Temperature measurement
Temperature hold
Temperature unit
Temperature main display
Temperature secondary display
Emissivity
Laser
Measurement mode
LCD Indicators
Startup and Shutdown
Startup
Short press (less than 0.5s) the trigger to turn on the thermometer, and the measured value before the last shutdown
will be displayed. Pressing MODE button can view MAX/MIN/AVG/DIF.
Shutdown
The thermometer will automatically shut down after 15 seconds without any operation in the HOLD mode, and save
the current measured value.
Manual Measurement
1) After aiming at the measured object, press the trigger and hold it. When the SCAN symbol is flashing, it means
that the temperature is being measured, and the measurement result will be updated on the LCD.
2) Release the trigger, the SCAN symbol will disappear while the HOLD symbol will be displayed. The thermometer
will stop measuring the temperature and keep the last measured value.
Lock Measurement
1) When lock measurement is turned on, short pressing the trigger can trigger this function. The symbol will be
displayed on the LCD and the SCAN symbol will flash. The thermometer will measure the target temperature
continuously without pressing the trigger all the time.
2) Press the trigger again, the and SCAN symbols will disappear while the HOLD symbol will appear. The
thermometer will stop measuring and keep the last measured temperature.
3) In the lock measurement setting interface, the user can set the lock measurement time (1m~5h). After the lock
function is triggered, the timing starts. When the set time is reached, the thermometer will automatically shut
down and save the last measured value. The user can view the measured value by short pressing (less than 0.5s)
the trigger (Caution: the measured value will be cleared if the user long presses the trigger). This operation is
suitable for processes that require regular temperature monitoring.
Caution: The measured target should be greater than 2 times the thermometer light spot diameter (S), and
then the test distance (D) can be determined according to the D: S relationship diagram.
MAX/MIN/AVG/DIF Value
Short press the "MODE" button to switch among "MAX→MIN→AVG→DIF" measurement modes in sequence, and
the temperature of the corresponding mode will be displayed in the secondary display position (as shown below).
Function Settings
In the HOLD interface, pressing the "SET" button can enter the high alarm limit→low alarm limit→emissivity→
temperature unit→sound alarm→lock measurement and other function settings. Under these setting interfaces,
the user can return to the HOLD interface by pressing the trigger or no operation for 10s.
High Alarm Limit Setting
In the HOLD interface, pressing the "SET" button once will enter the high alarm limit setting interface, and then
pressing the " " button can quickly select the preset values (P1-P5). If there is no wanted value among the preset
values, the user can use ▼ or “▲” to adjust at any of the preset values that is closest to the wanted one. Short “ ”
pressing will add or subtract 1 to the value each time, and long pressing will add or subtract 10 each second.
Laser Indicator
Pressing the button can turn on/off the laser indication function. When it is turned on, the laser symbol will
display on the LCD, and the laser will accurately indicate the measured position.
Note: Please follow the cautions when turning on the laser to avoid eyes injury.
High/Low Temperature Alarm
Pressing the "HI/LO" button can turn on/off the high and low limit alarm function in sequence. The sequence is:
HI/LO limit alarm functions are turned on at the same time→HI limit alarm is turned on→LO limit alarm is turned on
→HI/LO limit alarm functions are turned off at the same time (as shown below).
When the HI alarm is turned on, if the measured temperature is higher than the set high alarm limit, the red LED
and the HI symbol on the display will flash. If the sound alarm is turned on, the buzzer will beep.
When the LO alarm is turned on, if the measured temperature is lower than the set low alarm limit, the blue LED
and the LO symbol will flash. If the sound alarm is turned on, the buzzer will beep.
When either HI/LO alarm is turned on, if the measured temperature value is within the range of high and low alarm
limit, the green LED and the OK symbol will flash.
Technical Indexes

30@1500
1.2@60
0.8@40
0.8@12
20@300
mm
inch
20@1000
D:S=50:1
D
S
Low Alarm Limit Setting
In the HOLD interface, pressing the "SET" button twice will enter the low alarm limit setting interface. The user can
use ▼ or “▲” to adjust the value. Short pressing will add or subtract 1 to the value each time, and long pressing “ ”
will add or subtract 10 each second.
Emissivity Setting
In the HOLD interface, pressing the "SET" button three times will enter the emissivity setting interface, and then
pressing the " " button can quickly select the preset values (P1-P5). If there is no wanted value among the
preset values, the user can use "▼" or “▲” to adjust at any of the preset values that is closest to the wanted one.
Short pressing will add or subtract 0.01 to the value each time, and long pressing will add or subtract 0.1 each
second.
Temperature Unit Setting
In the HOLD interface, pressing the "SET" button four times will enter the temperature unit setting interface. The
user can use "▼" or “▲” to convert the unit °C/°F.
Sound Alarm Setting
In the HOLD interface, pressing the "SET" button five times will enter the sound alarm setting interface. The user
can use "▼" or “▲” to turn on/off this function.
Lock Measurement Setting
In the HOLD interface, pressing the "SET" button six times will enter the lock measurement setting interface. The
user can use "▼" or “▲” to turn on/off this function.
When the function is turned on, pressing button can set the lock measurement timing "00:00", and the selected
time position will flash. The user can use "▼" or “▲” to adjust the value. If the user needs to turn off the timing
function, set it to "00:00" and then it will jump to display "--:--".
D: S (Distance to Spot Ratio)
As the distance (D) between the thermometer and the measured target increases, the light spot diameter (S) of
the measured area also increases.
The relationship between measurement distance and light spot diameter is shown in the figure below.
The light spot diameter represents
90% of the energy in the circle
Field of View
When measuring, make sure that the measured target is larger than the light spot diameter . The smaller the target, the
closer the test distance should be (refer to D: S for the detailed light spot diameter). It is recommended that the measured
target be larger than twice the light spot diameter of the thermometer.
Good
So-So
Bad
Target >Light spot
T=S
T < S
diameter (S)
Emissivity
Emissivity represents the material energy radiation. The emissivity of most organic materials, painted or oxidized surfaces
is about 0.95. The user can use masking tapes or flat paints to cover the metal surface, use the high emissivity setting,
and then wait for a period of time to make the surface temperatures of the tapes/flat paints and the covered object the
same. At this point, the surface temperature of the tapes/flat paints is equal to the metal surface temperature. The
following table shows the total emissivity ε of some metals and non-metals.
Aluminum
Oxide
A3003 Alloy
Oxide
Crude
Brass
Polishing
Oxide
Cuprum
Oxide
Electrical terminal board
Hastelloy
Alloy
Inconel
Oxide
Abrasive blasting
Electropolishing
Ferrum
Oxide
Rusting
Ferrum (casting)
Oxide
Non-Oxide
Casting
Ferrum (forging)
Passivating
Plumbum
Crude
Oxide
Molybdenum
Oxide
Nickel
Oxide
Platinum
Black
Steel
Cold rolling
Burnishing
Polishing
Zinc
Oxide
Non-Metals
Asbestos
Asphalt
Basalt
Carbon
Non-Oxide
Graphite
Carborundum
Ceramic
Clay
Concrete
Cloth
Glass
Convex glass
Smooth glass
Nonex
Sheet material
Gypsum
Ice
Limestone
Paper
Plastic
Water
Soil
Wood
Measured surface
Metals
Emissivity
Maintenance
Cleaning
Blow away the fallen particles with clean compressed air, carefully wipe the lens surface with a moist swab, and
clean the shell with a moist sponge or soft cloth. Be careful not to rinse with water or immerse it in water.
Replace Battery
电池
电池盖
Battery
Battery cover
Install or replace a 9V battery (1604A) according to the following steps:
1.Remove the battery cover
2.Install the battery (pay attention to the polarity)
3.Close the battery cover
Phenomenon
Display OL
Display -OL
Display Err (startup)
Battery symbol flashes
Laser is not working or dark
Inaccurate measurement
Cause
Measured value > maximum range
Measured value < minimum range
Exceed the minimum or
maximum operating temperature
Low battery
Low battery
Unmatched emissivity, too far
measurement distance, diameter
of the measurement target<20mm
Measure
Stop measuring
Stop measuring
Place the thermometer at -5°C-50
(23°F-122°F) for 30 minutes
°C
Replace batteries
Replace batteries
Refer to Field of View, D:S and
other instructions in this manual
Troubleshooting

P/N:110401109910X