TASI TA622C Temperature Humidity Meter for Building Inspection & Condensation Troubleshooting Malaysia
Condensation, damp surfaces and excessive indoor humidity are common problems encountered during building inspection, facility maintenance and HVAC troubleshooting.
In Malaysia's warm and humid climate, moisture-related problems can appear around air-conditioned rooms, windows, walls, ceilings, pipes and other cooler surfaces.
Before deciding on the cause, technicians should obtain actual environmental measurements.
The TASI TA622C Digital Thermo-Hygrometer measures temperature, relative humidity, dew point and wet bulb temperature and features a separate measurement probe, making it useful for portable building environmental inspection in Malaysia.
Why Measure Temperature and Humidity During Building Inspection?
A room may look dry during an inspection but experience high humidity at other times.
Likewise, condensation may occur only under certain environmental conditions.
Possible factors include:
High indoor relative humidity
Cold air-conditioned surfaces
Outdoor humid air entering the building
Poor ventilation
HVAC operating conditions
Temperature differences between rooms
Air leakage
Changes in occupancy
Weather conditions
Measuring temperature and relative humidity provides useful information before investigating the building or HVAC system further.
What Can the TASI TA622C Measure?
The TASI TA622C provides four environmental measurements:
Temperature
Relative Humidity (RH)
Dew Point Temperature
Wet Bulb Temperature
The specified temperature measurement range is -40°C to 80°C.
Relative humidity measurement covers 0 to 100%RH.
Temperature accuracy is specified at ±0.5°C, while relative humidity accuracy is ±3%RH within 10–90%RH.
These parameters make the TA622C useful for environmental inspection where both temperature and moisture conditions need to be evaluated.
What Is Dew Point?
Dew point is the temperature at which air becomes saturated with moisture under the existing conditions.
When a surface becomes sufficiently cold relative to the surrounding air, moisture can begin to condense on that surface.
This is why dew point can be useful when investigating condensation.
For example, a technician may observe moisture around:
Air-conditioning diffusers
Windows
Cold pipes
Metal surfaces
Walls
Ceiling areas
Equipment
The TA622C displays dew point temperature directly, providing additional information during the investigation.
Why Relative Humidity Alone May Not Be Enough
Relative humidity is important, but it does not always explain why condensation occurs at a particular location.
Two areas may have similar RH readings but different surface temperatures.
This is why technicians may need to consider:
Air temperature
Relative humidity
Dew point
Surface temperature
The TA622C provides the first three environmental parameters.
When actual surface temperature measurement is required, an appropriate contact thermometer or infrared thermometer may also be useful.
Investigating Condensation Around Air-Conditioning Outlets
Air-conditioning outlets can be significantly cooler than the surrounding room.
If warm humid air reaches a sufficiently cold surface, condensation may develop.
The TA622C's separate probe can be positioned near the air-conditioning outlet to measure local temperature and humidity conditions.
Technicians can then compare measurements between:
Supply air area
Return air area
Room centre
Near the affected surface
Other unaffected areas
These comparisons can provide useful information for further HVAC troubleshooting.
Separate Probe for Difficult Measurement Locations
The TASI TA622C uses a separate temperature and humidity probe.
This allows the probe to be positioned close to the required measurement point while the main meter remains easy to view.
This can be useful when inspecting:
Ceiling areas
Air-conditioning diffusers
Behind furniture
Corners
Equipment cabinets
Restricted spaces
Different measurement heights
Areas near walls
The remote probe configuration gives building inspectors and technicians more flexibility during environmental investigations.
Check Different Rooms and Building Zones
Temperature and humidity may differ significantly between different parts of a building.
Portable measurements can be taken in:
Offices
Meeting rooms
Hotel rooms
Corridors
Storage rooms
Server rooms
Electrical rooms
Basements
Laboratories
Commercial spaces
Comparing different locations can help determine whether a moisture problem is isolated or more widespread.
Wet Bulb Temperature
The TASI TA622C also provides wet bulb temperature.
Wet bulb measurement provides additional information about the relationship between temperature and moisture in the air.
This can be useful for HVAC contractors and facility management personnel carrying out broader environmental assessments.
Data Recording for Intermittent Condensation Problems
Condensation may not occur continuously.
For example, it may appear:
Early in the morning
During heavy rain
When air-conditioning starts
After doors are opened
During periods of high occupancy
When outdoor humidity increases
A single measurement may therefore miss the condition that causes the problem.
The TASI TA622C provides data recording capability and USB PC communication.
Recorded environmental measurements can help technicians investigate how temperature and humidity change over time.
MAX / MIN / AVG Functions
The TA622C provides MAX / MIN / AVG functions.
These allow users to review the maximum, minimum and average environmental readings during an inspection period.
High and low limit alarm functions are also available to help identify measurements outside predetermined limits.
Can TA622C Detect Water Leakage?
No.
The TA622C measures environmental temperature and humidity.
It does not directly detect water inside a wall, floor or building material.
If the suspected problem involves moisture within materials, additional instruments such as a moisture meter may be required.
For a complete investigation, technicians may use several instruments depending on the problem.
TA622C vs Moisture Meter
These instruments measure different things.
A thermo-hygrometer such as the TASI TA622C measures environmental air conditions.
A moisture meter is designed to evaluate moisture in materials such as wood, walls or other building materials, depending on the instrument.
Therefore:
TA622C → Air temperature and humidity
Moisture Meter → Material moisture
Both can be useful during a building moisture investigation.
TA622C vs Infrared Thermometer
An infrared thermometer measures the surface temperature of an object.
The TA622C measures the environmental air condition.
When investigating condensation, technicians may find it useful to know both:
Environmental dew point
Actual surface temperature
For this reason, a TA622C and an infrared thermometer can complement each other during condensation troubleshooting.
Who Can Use the TASI TA622C?
Potential users include:
Building inspectors
Facility management companies
HVAC contractors
M&E contractors
Building maintenance teams
Property management companies
Hotels
Commercial buildings
Factories
Engineering consultants
Maintenance technicians
It can be used for both routine environmental checks and troubleshooting.
Is TASI TA622C Suitable for Condensation Troubleshooting?
Yes.
The combination of temperature, relative humidity and dew point measurement makes the TA622C useful when investigating environmental conditions associated with condensation.
Its separate probe also allows technicians to check specific locations such as air-conditioning outlets and restricted areas.
However, identifying the actual cause of a building moisture problem may require additional inspection and other measurement instruments.
Frequently Asked Questions
Can TASI TA622C detect condensation?
It measures environmental conditions related to condensation, including temperature, relative humidity and dew point. It does not directly detect water on a surface.
Why is dew point important for building inspection?
Dew point helps technicians understand when environmental conditions may allow condensation to occur on sufficiently cold surfaces.
Can TA622C measure wall moisture?
No. A suitable material moisture meter should be used when measuring moisture within building materials.
Can TA622C measure surface temperature?
It is primarily an air temperature and humidity instrument. An infrared or contact thermometer may be more appropriate for dedicated surface temperature measurements.
Can TA622C record environmental measurements?
Yes. It provides data recording capability and supports USB PC communication.
Can it be used by HVAC contractors?
Yes. Temperature, RH, dew point and wet bulb measurements are useful parameters for HVAC inspection and troubleshooting.
Looking for a Temperature Humidity & Dew Point Meter in Malaysia?
MTM Precision supplies professional testing and measurement instruments for building inspection, HVAC troubleshooting, facility management, moisture investigation, industrial maintenance and environmental monitoring applications in Malaysia.
If you are looking for the TASI TA622C Digital Thermo-Hygrometer, moisture meter, infrared thermometer or another environmental measurement instrument, contact MTM Precision to discuss your application.
Contact MTM Precision
MTM Precision Sdn Bhd
No. 29-1 & 29-2, Jalan Bandar 18,
Pusat Bandar Puchong,
47160 Puchong, Selangor, Malaysia.
Website: www.mtmpre.com.my
WhatsApp: +6016-660 7346
Email: mtmpre@yahoo.com
25 Aug 2026
