UNI-T UT383

P/N:l10401105962X
UNI-T
UT383
Mini Light Meters
Operating Instruction
1. Introduction
UT383 is a stable, safe, reliable mini digital light meter,
widely used in lightening enterprises, agriculture and animal
husbandry, mining enterprises, laboratory, office, household,
street lights construction and others.
This operating manual includes relevant safety information
and warnings. Please read this manual carefully and observe
all the cautions strictly.
A Warning:
Before using the product, please read the operation safety
rules carefully.
2. Out of the Box
Open the packing box and take out the meter. Please check
carefully if any items are missing or damaged.
1. Main Unit-1
2. Blister --1
3. Operating manual-1
3. Operation Safety
1. P lease check the meter and the accessories before using
and beware of any damage or abnormal phenomenon. If
you find the case is damaged or the LCD shows nothing,
or you consider that the meter could not work properly
anymore, please stop using it.
2,Observe the operating instructions while measuring.
3. Do not open the meter at will or change internal wiring to
avoid damages to the meter.
4. W hen the LCD displays “ca”, replace the battery timely.
Remove the battery if the meter is not used for a long time.
5. D o not store or use the meter in high temperature, high
humidity, flammable, combustible, or strong electromagnetic
environment.
6. P lease use soft cloth and neutral detergent to clean the
case for maintenance. Do not use grinding agent and
solvent to avoid case corrosion and damaging the meter.
4. P r oduct Outlook
1. Illumination transducer
2. Meter case
3. LCD display
4. Function keys
® © © ©
5. D i s p l a y Interface
1
Maximum measurement
5
Foot candle
2
Minimum measurement
6
Lux
3
Data hold
7
Value*10 or value*100
4
Low battery
8
Illumination value
6. K ey Function and Setup
1. ON/OFF:
Short press once to start up; short press again to power
off.
Note: Product's auto power off feature can be disabled:
Press and hold “HOLD” and then press “ON/OFF” key to
enable/disable auto power off, LCD will display “APO OFF”
to indicate status.
2. LUX/FC:
Unit conversion key: Short press this key to select Lux or
Foot candles.
3. MAX/MIN:
Pressing this key can select maximum, minimum or normal
value measurement; select maximum and the meter will
always show the maximum reading; select minimum and
the meter will always show the minimum reading.
4. HOLD/BL:
HOLD: Short press this key to hold measurement; short
press this key again to exit data hold and continue normal
measurement.
BL: Long press this key to turn on backlight; long press
this key again to turn off backlight.

UNI-T UT383 Specifications

General

Resolution	0.1 Lux
Sensor	Silicon Photodiode
Display	LCD
Illuminance Measurement Range	0~199999Lux
Sampling Rate	2 times per second
Operating Temperature	0°C to 40°C
Weight	118g (including battery)

Summary

Introduction to UT383 Mini Light Meter

Checking Contents and Safety Precautions

Out of the Box Contents

Lists items included in the product packing box for user verification.

Operation Safety Guidelines

Provides essential safety rules for operating the meter to prevent damage or injury.

Product Outlook Identification

Identifies the main external components of the UT383 meter.

Display Interface and Key Functions

Display Interface Overview

Details the components and indicators shown on the meter's LCD display.

Device Power Control (ONOFF)

Instructions for starting up and powering off the UT383 meter.

Unit Conversion (LUXFC)

How to switch measurement units between Lux and Foot candles.

MaxMin Measurement Mode

Procedure for selecting maximum, minimum, or normal value readings.

Data Hold and Backlight Control

How to hold current readings and activate/deactivate the LCD backlight.

Technical Specifications and Maintenance

Illumination Measurement Specifications

Details range, resolution, and accuracy for illumination measurements.

General Product Type Specifications

Information on LCD display, overload indication, battery status, and sensor type.

Environmental Operating Specifications

Defines conditions for indoor use, altitude, safety, and operating temperature/humidity.

Electrical Performance Specifications

Covers accuracy, operating temperature, and humidity for electrical performance.

General Meter Maintenance

Guidelines for cleaning and servicing the meter to maintain accuracy and prevent damage.

Battery Installation and Replacement

Step-by-step instructions for installing and replacing the meter's batteries.