UNI-T UT343A vs UT343D Coating Thickness Gauge Malaysia
UNI-T UT343A vs UT343D Coating Thickness Gauge Malaysia
Content
The UNI-T UT343A and UT343D are both portable coating thickness gauges designed for measuring coatings on metal substrates.
At first glance, the two models may appear very similar. However, they are suited to slightly different users.
The biggest difference is straightforward:
UT343A focuses on a wider measuring range of up to 1750 μm, while UT343D offers more data-oriented functions, including larger storage capacity and USB communication.
So which model should you choose in Malaysia?
UNI-T UT343A vs UT343D – Main Difference
FeatureUNI-T UT343AUNI-T UT343DInstrument TypeCoating Thickness GaugeCoating Thickness GaugeFe MeasurementYesYesNFe MeasurementYesYesMaximum Range1750 μm1250 μmSingle MeasurementYesYesContinuous MeasurementYesYesStatistical FunctionsMAX/MIN/AVGAvailableData Storage199 readings500 readingsUSB CommunicationNoYesMain AdvantageWider measuring rangeData management & PC connection
The better choice therefore depends on what you actually need to measure.
When Should You Choose UNI-T UT343A?
Choose the UT343A when a wider coating thickness range is more important than PC data transfer.
Its measuring range extends to 1750 μm, giving it additional flexibility for applications involving thicker coatings.
Typical applications include:
Painted steel
Powder coating
Protective coatings
Metal fabrication
Automotive paint inspection
Manufacturing QA/QC
Maintenance inspection
For users who mainly need to:
Measure → Compare → Record readings → Continue inspection
the UT343A is a practical option.
When Should You Choose UNI-T UT343D?
The UT343D becomes more attractive when measurement records and computer-based data handling are important.
With up to 500 stored readings and USB communication, it is better suited to users who need to collect larger quantities of measurement data.
Possible applications include:
QA/QC departments
Production inspection
Repeated batch inspection
Measurement documentation
Data analysis
Industrial reporting
If the job involves hundreds of measurement points, the additional storage capacity can become more important than having the wider 1750 μm range.
UT343A Has the Wider Measuring Range
This is one of the clearest reasons to consider the UT343A.
UT343A: up to 1750 μm
UT343D: up to 1250 μm
If your expected coating thickness could exceed 1250 μm, the UT343A provides additional measurement headroom.
However, a wider range does not automatically mean it is the better instrument for every user.
If your coatings are comfortably below 1250 μm and you require extensive data storage and USB communication, the UT343D may fit the workflow better.
Both Support Fe and NFe Measurement
Both models are useful for users who work with different metal substrates.
Fe generally covers ferrous substrates such as steel.
NFe generally covers non-ferrous substrates such as aluminium.
This makes the gauges useful across applications such as:
Automotive | Fabrication | Painting | Manufacturing | Maintenance | Quality Control
Before measurement, always make sure the coating/substrate combination is suitable for the measurement principle of the instrument.
Which Is Better for Car Paint Inspection?
For straightforward automotive paint checking, the UT343A already covers the core requirements.
A user can take multiple measurements across:
Bonnet
Doors
Roof
Fender
Quarter panels
Boot
and compare the readings for unusual variations.
The UT343D becomes more interesting when the operator wants to store a larger number of readings and transfer measurement information to a computer.
For occasional vehicle inspection, those additional functions may not always be necessary.
Which Is Better for Industrial QA/QC?
This depends on the inspection procedure.
If the priority is:
Wider measurement range
consider the UT343A.
If the priority is:
More stored readings + USB communication
consider the UT343D.
For industrial buyers, it is better to define the application first rather than simply purchasing the model with more functions.
Example 1 – Metal Fabrication Workshop
A fabrication company needs to perform quick coating checks on painted and powder-coated components.
Measurements are taken manually and recorded only when necessary.
In this situation, the UT343A may provide the simpler solution, particularly when the wider 1750 μm range is useful.
Example 2 – QA/QC Department
A manufacturer needs to inspect multiple batches and collect many readings during production.
The measurement data may later need to be reviewed on a computer.
In this situation, the UT343D's larger storage capacity and USB function may be more relevant.
UT343A or UT343D?
A simple way to decide is:
Choose UT343A if:
You prioritize a wider 0–1750 μm measuring range and straightforward portable inspection.
Choose UT343D if:
You prioritize larger data storage and USB/PC data handling.
There is no need to pay for functions that your application will not use.
Start with the substrate, expected coating thickness, number of measurements and reporting requirements.
UNI-T Coating Thickness Gauge Malaysia
MTM Precision supplies testing and measuring instruments for automotive, maintenance, manufacturing and industrial applications in Malaysia.
If you are comparing the UNI-T UT343A vs UT343D, tell us:
What material are you measuring?
What type of coating is applied?
What is the approximate expected thickness?
Do you need to save or transfer measurement data?
This information makes model selection much easier.
MTM Precision Sdn Bhd
Showroom & Service Centre: Puchong, Selangor, Malaysia
Tel: 03-8080 7172
WhatsApp: +6016-660 7346
Email: mtmpre@yahoo.com
Website: www.mtmpre.com.my
22 Sep 2026
