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