Metravi TH-04 Temperature and Humidity Meter

A. Product Overview

The Metravi TH-04 is a digital temperature and humidity meter designed for continuous indoor environmental monitoring. It simultaneously displays the current temperature, relative humidity and time on a clear LCD screen.

The instrument also includes an environmental comfort display. Based on the measured humidity level, it indicates whether the surrounding condition is comfortable, excessively humid or too dry.

Its compact, battery-operated design makes it suitable for homes, offices, laboratories, storage areas, workshops and other indoor locations where quick visual monitoring of temperature and humidity is required.

Key Features

• Simultaneous temperature, humidity and time display
• Temperature measuring range from 0°C to 50°C
• Temperature display resolution of 0.1°C
• Temperature accuracy of plus or minus 1.0°C
• Humidity measuring range from 10 percent RH to 90 percent RH
• Humidity accuracy of plus or minus 5 percent RH between 40 percent RH and 80 percent RH
• Humidity accuracy of plus or minus 8 percent RH outside the specified central range
• Comfort, Wet and Dry environmental indicators
• 12-hour and 24-hour clock selection
• Daily alarm function
• Calendar and timekeeping functions
• Large digital LCD
• Powered by one 1.5 V AAA battery
• Suitable for general indoor monitoring

B. Working Principle

The Metravi TH-04 contains separate electronic sensing elements for temperature and relative humidity.

Temperature Measurement

The internal temperature sensor detects changes in the surrounding air temperature. The instrument converts the sensor response into a digital value and displays it in degrees Celsius or degrees Fahrenheit.

The temperature measuring range is:

• 0°C to 50°C
• 32°F to 120°F

Humidity Measurement

The humidity sensor detects the amount of moisture present in the surrounding air. The instrument converts this measurement into relative humidity, expressed as a percentage RH value.

Relative humidity indicates how much water vapour is present in the air compared with the maximum amount the air could hold at the same temperature.

Environmental Comfort Indication

The instrument interprets the humidity reading and provides one of the following general condition indicators:

• Comfort for a comfortable indoor humidity condition
• Wet when the humidity is high
• Dry when the air is considered too dry

These indicators provide a simple visual interpretation of the indoor environment without requiring the user to analyse the humidity percentage manually.

C. Why the Metravi TH-04 Is Used

Temperature and humidity can affect personal comfort, stored materials, electronic equipment, furniture, documents and general indoor conditions. The Metravi TH-04 provides an immediate indication of these two environmental parameters.

It can help users:

• Monitor indoor temperature and relative humidity
• Identify excessively humid room conditions
• Identify air that may be too dry
• Maintain more comfortable indoor conditions
• Observe environmental changes throughout the day
• Check storage-room conditions
• Monitor office and workplace environments
• Protect moisture-sensitive materials
• Support basic laboratory and educational monitoring
• Compare temperature and humidity between different rooms
• Display time, temperature and humidity from one device

The TH-04 is intended for general environmental indication. It does not automatically control cooling, heating, humidification or dehumidification equipment.

D. Suitable Buyers

The Metravi TH-04 Temperature and Humidity Meter is suitable for:

• Homeowners
• Office administrators
• Facility-management teams
• Retail shops
• Schools and colleges
• Educational laboratories
• General testing laboratories
• Warehouses
• Storage-room operators
• Libraries
• Archives
• Museums
• Workshops
• Indoor gardening users
• Computer and server-room operators
• Pharmaceutical storage areas requiring general indication
• Food storage areas requiring general environmental checks
• Electronics storage facilities
• HVAC service technicians
• Building-maintenance professionals

Frequently Asked Questions

1. What does the Metravi TH-04 measure?

The Metravi TH-04 measures indoor air temperature and relative humidity. It also displays time and general environmental comfort conditions.

2. What is the temperature range of the TH-04?

The temperature measuring range is 0°C to 50°C, equivalent to approximately 32°F to 120°F.

3. What is the temperature accuracy?

The specified temperature accuracy is plus or minus 1.0°C.

4. What is the temperature resolution?

The temperature display resolution is 0.1°C or 0.1°F.

5. What is the humidity measuring range?

The humidity measuring range is 10 percent RH to 90 percent RH.

6. What is the humidity accuracy?

Humidity accuracy is specified as plus or minus 5 percent RH between 40 percent RH and 80 percent RH. Outside this range, the specified accuracy is plus or minus 8 percent RH.

7. What do the Comfort, Wet and Dry indicators mean?

Comfort indicates a generally comfortable humidity condition. Wet indicates high humidity, while Dry indicates that the surrounding air is too dry.

8. Does the TH-04 display temperature and humidity at the same time?

Yes. The LCD displays time, temperature and relative humidity simultaneously.

9. Can the temperature unit be changed?

Yes. The instrument supports temperature display in degrees Celsius and degrees Fahrenheit.

10. Does the meter include a clock?

Yes. It includes timekeeping with selectable 12-hour and 24-hour clock formats.

11. Does the Metravi TH-04 have an alarm?

Yes. It includes a daily alarm function.

12. What type of battery does it require?

The instrument operates using one 1.5 V AAA battery.

13. Is it suitable for home use?

Yes. It is suitable for monitoring temperature, humidity and comfort conditions in bedrooms, living rooms, kitchens, study rooms and other indoor spaces.

14. Can it be used in offices?

Yes. It can provide a convenient visual indication of office temperature and humidity conditions.

15. Is it suitable for warehouses?

It can be used for general warehouse temperature and humidity indication. Applications requiring validated records, alarms, remote monitoring or regulatory documentation may require a calibrated data logger or monitoring system.

16. Is the TH-04 a temperature and humidity data logger?

No. It is a digital temperature and humidity indicator. The catalogue does not specify automatic historical data recording or downloadable logging functions.

17. Can it control an air conditioner or humidifier?

No. The TH-04 is intended for measurement and display. It does not provide a control relay output for operating HVAC or humidity-control equipment.

18. Can it be used for pharmaceutical compliance monitoring?

It may be useful for general environmental indication, but regulated pharmaceutical applications commonly require calibrated data loggers, traceable calibration certificates, alarm records and documented data storage.

19. Where should the meter be placed?

Place it in an indoor location with free air circulation. Avoid direct sunlight, water, strong heat sources, air-conditioner outlets and areas with rapid temperature changes.

20. Why should temperature and humidity be monitored together?

Temperature affects how moisture behaves in the air. Monitoring both parameters provides a clearer understanding of indoor comfort and storage conditions than measuring either parameter alone.