
P/N:110401109256X
UT300H
lnfrared Thermometer
User Manual
PREFACE
Thank y ou for p urchas ing the new inf rared t hermom eter. In or der to u se this produc t safel y and
correctly, please read this manual thoroughly, especially the Safety Instructions part. After reading
this manual, it is recommended to keep the manual at an easily accessible place, preferably close
to the device, for future reference.
LIMITED WARRANTY AND LIABILITY
Uni-Trend guarantees that the product is free from any defect in material and workmanship within
one year from the p urchase date. This warrant y does no t apply to damages caused b y accide nt,
negli gence, mis use, modif icati on, c ontam inat ion or improper h andling. Th e dealer sh all not be
entitled to give any other warranty on behalf of Uni-T rend. If you need warranty service within the
warranty period, please contact your seller directly.
Uni-Tre nd will not be responsible fo r any s pecia l, ind irect , inci denta l or su bsequ ent damage or
loss caused by using this device.
OVERVIEW
UT300H Non-contact lnfrared Thermometer (hereinafter referred to as "thermometer"). This product
measures temperature by collecting the infrared thermal radiation energy emitted by target surface.
UT300H has advantages of simple and sanitary operation, quick and accurate measurement. It can
measure temperature precisely within 1s by aiming the detector at target object.
It is not allowed to be used in the presence of a mixture of flammable anesthetic gas, air, oxygen or
nitrous oxide. UT300H is a continuous operating device.
This product is composed of infrared sensor, circuit components, operating buttons and plastic shell.
SAFETY INSTRUCTION
Warning:
To use the product properly, please read the following instructions carefully before use:
To ensure safety and accuracy of measurement, only qualified maintenance personnel can repair
it with original components.
Replace the battery immediately once the battery indicator appears.
Prior to using the t hermomet er, please che ck the box. If any dam age to the thermometer were
found, please do not use it. Inspect for damage or any shortage of parts.
Do not place the thermometer near the objects with high temperature for long period.
It is recommended to operate the thermometer within the environment of 15°C~30°C and RH<85%.
Please use the thermometer indoor and do not expose it to strong sunlight or intense electromagnetic
interference.
Please ensure the temperature around the measuring object is stable, do not test during strong
airflow.
Avoid testing in unstable temperature environment - wait 30min to allow the thermometer to stable.
Wait 10~30min to measure if the measuring object came from very high or very low temperature.
Please wait 10min to measure new objects after measuring very high or very low temperature.
It is recommended to measure thrice for every object and the highest occurring data should be used.
Please ac cura tely aim t he se nsor windo w at t he me asur ing t arget. Oth erwi se er ror o r HI/LO
indicator will appear.
Please keep the battery out of the reach of children, children may accidentally ingest. Contact with
doctor immediately if that happens.
If the thermom eter wi ll not i n use fo r long period, please t ake out the bat tery to avoid leakage.
The battery is not allowed to be placed in fire.
Not for medical use
SYMBOLS
Warning or Caution
Read the manual before use
Dispose the device and accessories properly according to local waste
management policy.
SPECIFICATION
Function
Temperature range
Accuracy
Repeatability
Resolution
Response time
Optimum measuring distance
Measurement alarm
Auto shutdown
°C/°F option
Backlight
Operating environment
Transport and storage environment
Battery type
15°C~30°C (59°F~86°F), <85%RH
-20°C~60°C (-4°F~140°F), <85%RH
32°C~42.9°C (89.6°F~109.2°F)
Sound alarm for >37.2°C
Direct current
Black body mode
UT300H
±0.3°C (0.6°F)
0.3°C (0.6°F)
0.1
500ms
5-10cm
White
9V (6F22)
FEATURES
White backlight
Option of Celsius/Fahrenheit
Dynamic monitoring of battery capacity
Low voltage indication
Display screen
Sound alarm for the upper and lower temperature limit
LCD FUNCTION DESCRIPTION
Battery capacity indication
Backlight indication
Celsius/Fahrenheit
Sound alarm for the upper and lower temperature limit
WORKING PRINCIPLE
lnfrared thermometer can measure surface temperature of opaque objects. Its optical device can sense
the infrared energy concentrated on the detector, and the electronic components convert information
into temperature reading which is displayed on the display screen.
OPERATING METHODS
To measure temperature, allow the thermometer aim at the measured target, push the trigger to display
the real time measured result; and loose the trigger to hold it. Thermometer will au tomatically shut
down if no action were detected out within 8s.
SETTING OPERATION
SET:
Cyclical switching setting status: Click on SET to enter the cyclical switching setting status, which is
designed with a circular order as follows: °C/°F setting → temperature limit value mute setting.
°C/°F setting:
It is used t o display °C or °F. The unit °C or °F will be d isplayed d uring setting. Clic k “▲” or “▼” to
select °C or °F in cycle.
Temperature limit value mute setting:
When setting, it is able to select mute on/off in cycle by clicking on “▲” or “▼”. When the mute setting
is on, it will be displayed as “ ”, and the buzzer will be mute; while mute setting is of f, “ ” will
disappear and buzzer will make sounds intermittently.
BATTERY REPLACEMENT
Open battery c over to take ou t the battery. Load a new 9V 6F22 battery and make sure the battery
is place d correctly.
MAINTENANCE
The thermometer is a repeatedly-used accurate device, so please pay attention to clean and
maintenance. Especially keep the lens clean, or the accuracy may be affected.
Clean:
1. Clean chassis: Clean the chassis with cotton sponge or soft cloth with medicinal alcohol or clean
water.
2. Clean lens: Blow away the slipped off grains with clean compressed air. Wipe the surface carefully
with wet cotton swab. Cotton swab should be moistened with medicinal alcohol or clean water.
FAULT DIAGNOSIS
Symptom
HI (on the screen)
LO (on the screen)
Battery icon flashes
Possible blank screen
Target temperature exceeding range
Target temperature lower than range
Problem
Battery low
Battery drained
Action
Select the target within range
Select the target within range
Replace battery
Check and/or replace battery
ACCESSORIES
Battery ----------------------------- 1
Manual ----------------------------- 1
Device ------------------------------ 1