UNI-T UT366A Digital Manometer Buying Guide for HVAC Technicians Malaysia

A digital manometer is used to measure low air or gas pressure in HVAC, ventilation and industrial systems. Before selecting an instrument, buyers should consider the required pressure range, measurement type, pressure units and whether airflow testing is needed.

The UNI-T UT366A is suitable for technicians who need a portable instrument for gauge pressure, differential pressure and optional duct air-velocity measurement.

What Can the UT366A Measure?

The UT366A can measure pressure through its two connection ports.

Its main measurement modes include:

Positive gauge pressure
Negative gauge pressure
Differential pressure
Independent P1 pressure
Independent P2 pressure
Air velocity with an optional Pitot tube

This allows one instrument to support several HVAC inspection tasks instead of being limited to a single application.

Check the Required Pressure Range

The UT366A has a pressure measurement range of ±15.00 kPa.

Equivalent selectable ranges include:

±150.0 mbar
±0.150 bar
±2.175 psi
±112.5 mmHg
±60.29 inH₂O
±1,531 mmH₂O
±150.0 hPa

The specified accuracy is ±0.5% full scale at 25°C.

Before purchasing, check the expected minimum and maximum pressure of the equipment. The instrument’s range should cover the application without being unnecessarily high for very small pressure changes.

Consider the Type of Measurement

Choose the UT366A when your work requires one or more of the following measurements.

AHU Filter Pressure Drop

Connect one hose before the filter and the other after the filter. The pressure difference helps technicians monitor increasing airflow resistance as the filter becomes loaded.

Duct Static Pressure

The instrument can be connected to an appropriate static-pressure test point to check pressure inside supply, return or exhaust ducts.

Fan Pressure Testing

P1 and P2 can be used to compare pressure at different points around a fan or ventilation component.

Room Differential Pressure

The UT366A can help compare pressure between two rooms or areas when suitable pressure connections are available.

Duct Air Velocity

With the optional Pitot tube, the UT366A can measure air velocity inside a duct in m/s or fpm.

Select the Correct Pressure Unit

Different HVAC specifications may use different units. The UT366A supports:

kPa
mbar
bar
psi
mmHg
inH₂O
inHg
oz/in²
kg/cm²
ftH₂O
mmH₂O
hPa
m/s and fpm with the airflow configuration

Its unit-memory function helps retain the selected unit for repeated work.

Do You Need the Optional Pitot Tube?

The standard UT366A package includes a pressure hose, but the Pitot tube is an optional accessory.

Add the Pitot tube when the intended work includes:

Internal duct air-velocity measurement
Airflow testing through a small duct access hole
HVAC testing and commissioning
Industrial ventilation assessment
Air-volume calculations based on average velocity and duct area

The compatible Pitot tube is made from 304 stainless steel and measures approximately 350 mm long with an 8 mm diameter.

If the main requirement is only filter pressure drop or duct pressure, the Pitot tube may not be necessary.

UT366A or a Standard Anemometer?

The UT366A is the better choice when pressure measurement is important.

Choose the UT366A for:

Filter pressure drop
Differential pressure
Static duct pressure
Positive and negative pressure
Air velocity inside a duct with a Pitot tube

Choose a vane or hot-wire anemometer when the main requirement is:

Quick airflow checks at grilles
Open-outlet measurements
Direct fan airflow testing
Simple environmental air-velocity measurement

Some HVAC technicians use both instruments because they are designed for different measurement points.

Useful Functions for Field Work

The UT366A includes several functions that support inspection work:

MAX for the highest recorded value
MIN for the lowest recorded value
AVG for average measurement
HOLD for retaining a displayed reading
White display backlight
Automatic power-off
Low-battery indication
Positive and negative pressure LED indicators
Magnetic hook for convenient positioning

The instrument is powered by three AAA batteries and has a compact body for carrying between service locations.

Important Questions Before Ordering

Before buying the UT366A, confirm:

What pressure range must be measured?
Is gauge pressure or differential pressure required?
Which pressure unit is used in the equipment specification?
Will the instrument be used inside ducts?
Is a Pitot tube required?
Is the main task pressure testing or grille airflow testing?
Does the application require a calibration certificate?

Providing this information helps the supplier recommend the correct configuration.

Who Should Choose the UT366A?

The UNI-T UT366A is suitable for:

HVAC service technicians
Air-conditioning contractors
Facility-management teams
Testing and commissioning contractors
Factory maintenance departments
Cleanroom technicians
Data-centre maintenance teams
Industrial ventilation specialists

It can support maintenance work in factories, commercial buildings, hospitals, laboratories and data centres across Malaysia.

Get the Correct UT366A Configuration

For assistance selecting the UNI-T UT366A Digital Manometer, WhatsApp MTM Precision with your expected pressure range, measurement location and whether duct air-velocity testing is required.

MTM Precision Sdn Bhd

Showroom & Service Centre:
No. 29-1 & 29-2, Jalan Bandar 18,
Pusat Bandar Puchong,
47160 Puchong, Selangor, Malaysia

Tel: 03-8080 7172
WhatsApp: +6016-660 7346
Email: mtmpre@yahoo.com
Website: www.mtmpre.com.my