TASI TA622C Temperature Humidity Meter for Museum, Archive & Document Storage Malaysia
Temperature and humidity can be important environmental parameters when storing documents, books, photographs, records, artwork and other sensitive materials.
Museums, archives, libraries, record rooms and document storage facilities may need to check environmental conditions to understand whether temperature and relative humidity remain within their own required limits.
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 environmental inspection in museums, archives and document storage applications in Malaysia.
Why Monitor Temperature and Humidity in Archives?
Paper, photographs, books, artwork and other stored materials can be affected by environmental conditions over time.
Potential concerns may include:
High humidity
Excessive heat
Condensation
Moisture accumulation
Environmental fluctuations
Uneven air-conditioning
Poor ventilation
Differences between storage zones
The appropriate environmental limits depend on the material being stored and the organisation's preservation requirements.
Regular measurement helps facility personnel understand actual conditions rather than relying only on the air-conditioning system settings.
What Can the TASI TA622C Measure?
The TASI TA622C provides four environmental measurements:
Temperature
Relative Humidity (RH)
Dew Point Temperature
Wet Bulb Temperature
Its 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 humidity accuracy is ±3%RH within 10–90%RH.
This allows personnel to evaluate both temperature and moisture conditions with one portable instrument.
Check Different Areas of a Document Storage Room
Environmental conditions may not be identical throughout an archive or storage room.
A portable thermo-hygrometer can be used to compare readings at:
Upper shelves
Lower shelves
Centre of the room
Near external walls
Near doors
Near windows
Corners
Air-conditioning outlets
Different storage cabinets
This can help identify whether certain areas are consistently warmer or more humid than others.
Why Is the Separate Probe Useful?
The TASI TA622C uses a separate temperature and humidity probe.
The probe can be positioned at the required measurement location while the main display remains easy for the operator to read.
This can be useful when checking:
Between storage shelves
Different shelf heights
Near stored documents
Behind cabinets
Restricted spaces
Near HVAC outlets
Specific storage zones
The separate probe makes it easier to compare environmental conditions at locations where positioning the entire instrument may be inconvenient.
Temperature & Humidity in Museums
Museum environments may contain many different types of materials.
These can include:
Paintings
Historical documents
Books
Photographs
Textiles
Wooden objects
Metal objects
Exhibits
Collections
Different materials may have different preservation requirements.
The TA622C can provide portable temperature and humidity measurements during environmental inspection, but the acceptable conditions should always be determined according to the museum's conservation requirements.
Document and Record Room Monitoring
Many businesses and government organisations maintain rooms for storing:
Contracts
Technical drawings
Financial records
Legal documents
Engineering records
Historical files
Certificates
Printed archives
These rooms may not have sophisticated environmental monitoring systems.
A portable instrument such as the TA622C can be used during routine facility inspection to check whether temperature and humidity differ significantly between different parts of the room.
Dew Point and Condensation
The TA622C also provides dew point temperature.
Dew point is useful when investigating environmental conditions associated with condensation.
When the temperature of a surface approaches the surrounding air's dew point, condensation can become more likely.
This may be relevant around:
Cold walls
Windows
Air-conditioning outlets
Metal cabinets
Pipes
Cooler storage areas
The TA622C displays dew point directly, giving facility personnel additional information when investigating moisture problems.
Wet Bulb Temperature
The TASI TA622C also provides wet bulb temperature.
Wet bulb information can assist HVAC and facility personnel when evaluating indoor environmental and air-conditioning conditions.
Having temperature, relative humidity, dew point and wet bulb information available from one instrument makes the TA622C useful for broader environmental troubleshooting.
Data Recording for Archive Environmental Investigation
Environmental conditions can change throughout the day.
Temperature and humidity may be affected by:
Air-conditioning schedules
Outdoor weather
Door opening
Visitor activity
Building occupancy
HVAC cycling
Different operating hours
The TASI TA622C provides data recording capability and USB PC communication.
This can help users investigate questions such as:
Does humidity increase when air-conditioning is switched off?
Is the archive warmer during the afternoon?
Are environmental conditions stable during operating hours?
Does opening the storage room affect RH?
Did conditions improve after HVAC maintenance?
Recorded measurements provide more information than relying only on one spot reading.
MAX / MIN / AVG Functions
The TA622C provides MAX / MIN / AVG functions.
These allow personnel to see maximum, minimum and average environmental readings during an inspection period.
High and low limit alarm functions are also available, allowing users to identify readings outside predetermined limits.
Who Can Use the TASI TA622C?
Potential users include:
Museums
Archives
Libraries
Universities
Government departments
Record management companies
Corporate document storage facilities
Art galleries
Conservation departments
Facility management companies
Building maintenance teams
The same instrument can also be used in laboratories, warehouses, offices and other controlled indoor environments.
TASI TA622C vs Basic Room Hygrometer
A basic room hygrometer may be useful for displaying current temperature and humidity at one fixed location.
The TA622C provides additional professional functions including:
Separate measurement probe
Temperature
Relative humidity
Dew point
Wet bulb temperature
MAX / MIN / AVG
High / low limit alarm
Data recording
USB PC communication
This makes it more suitable for personnel who need to investigate environmental conditions at multiple locations.
TASI TA622C vs Permanent Archive Monitoring System
A permanent monitoring system is more appropriate when an organisation requires:
Continuous monitoring
Multiple permanent sensors
Long-term records
Remote access
Automatic notifications
Formal preservation monitoring
The TASI TA622C is primarily a portable inspection and troubleshooting instrument.
It can be useful for checking specific locations, investigating unusual readings or comparing environmental conditions between storage areas.
Portable and permanent monitoring instruments can therefore be used together.
Is TASI TA622C Suitable for Museum and Archive Monitoring?
Yes, particularly for portable environmental inspection and troubleshooting.
Its temperature, relative humidity, dew point, wet bulb, separate probe and data recording functions allow personnel to investigate environmental conditions at different locations.
However, organisations responsible for valuable or sensitive collections should follow their own conservation requirements and use an appropriate permanent monitoring system where necessary.
Frequently Asked Questions
Can TASI TA622C be used in an archive room?
Yes. It can be used for portable temperature and humidity measurements in archive and document storage areas.
Can TA622C be used in a museum?
Yes, for environmental spot checks and troubleshooting. Appropriate environmental limits should follow the museum's conservation requirements.
Can it measure humidity between storage shelves?
Yes. The separate probe makes it easier to check specific locations and different shelf heights.
Does TA622C measure dew point?
Yes. It displays dew point temperature directly.
Can TA622C record temperature and humidity?
Yes. It provides data recording functionality and supports USB PC communication.
Can TA622C replace a permanent museum monitoring system?
Not necessarily. TA622C is particularly useful for portable inspection, while long-term collection monitoring may require a dedicated permanent system.
Looking for a Museum & Archive Temperature Humidity Meter in Malaysia?
MTM Precision supplies professional testing and measurement instruments for museums, archives, libraries, document storage, laboratories, facility management, HVAC and environmental monitoring applications in Malaysia.
If you are looking for the TASI TA622C Digital Thermo-Hygrometer or need help selecting a suitable temperature and humidity measurement or data logging solution, contact MTM Precision.
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
