TFA 45.2007 Thermo-Hygrometer 100 mm Instruction Manual

1. Product Overview

The TFA 45.2007 Thermo-Hygrometer is a precision instrument designed for accurate measurement of indoor air temperature and humidity. Featuring a classic design with a brass dial, this device utilizes a synthetic hair hygrometer for reliable humidity readings. It is manufactured in Germany, ensuring quality and durability.

This image displays the TFA 45.2007 Thermo-Hygrometer, a round device with a brass-colored rim and a white dial, mounted on a light gray wall. The dial features two scales: an outer scale for humidity (0-100%) and an inner scale for temperature (-10 to 50°C). A needle indicates the current humidity, and another needle indicates the temperature. The device is designed for indoor use, as suggested by the blurred background showing an indoor setting with a window and a chair.

2. Safety Information

• This device is intended for indoor use only.
• Avoid exposing the thermo-hygrometer to direct sunlight, extreme temperatures, or high humidity levels (above 95% RH) as this may affect accuracy and damage the device.
• Handle the device with care to prevent physical damage.
• Keep out of reach of children.

3. Package Contents

The package contains:

• 1x TFA 45.2007 Thermo-Hygrometer

4. Setup

4.1 Mounting

The TFA 45.2007 Thermo-Hygrometer is designed for inside mounting. Choose a suitable indoor location away from direct heat sources, air conditioning vents, or windows that receive direct sunlight, as these can affect the accuracy of readings. Use a small nail or screw to hang the device securely on a wall.

4.2 Initial Calibration (Hygrometer)

For optimal accuracy, it is recommended to calibrate the hygrometer before first use or if you suspect inaccurate readings. Follow these steps for a simple salt solution calibration:

1. Place a small cup or container with approximately 2 tablespoons of coarse table salt.
2. Add a few drops of water to the salt, just enough to make it damp, not dissolved.
3. Place the thermo-hygrometer and the salt solution inside an airtight plastic bag or container.
4. Seal the bag/container and leave it undisturbed for at least 8-12 hours (preferably overnight) at room temperature.
5. After this period, the hygrometer should read approximately 75% relative humidity. If it does not, gently adjust the small screw on the back of the device (if available) until the needle points to 75%.
6. Remove the device from the bag/container and allow it to acclimatize to the room for a few hours before taking readings.

5. Operating Instructions

The TFA 45.2007 Thermo-Hygrometer provides instant readings of both temperature and humidity.

• Temperature Reading: The inner scale, marked in degrees Celsius (°C), indicates the current ambient temperature. The needle points to the corresponding value.
• Humidity Reading: The outer scale, marked in percentage (%), indicates the current relative humidity. The needle points to the corresponding value. An ideal indoor humidity range is typically between 40% and 60%.

Read the values directly from the dial. No power source or batteries are required for operation.

6. Maintenance

• Clean the device regularly with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Ensure the device remains dry. Do not immerse it in water or expose it to excessive moisture.
• Periodically check the hygrometer's accuracy using the salt solution calibration method described in Section 4.2.

7. Troubleshooting

• Inaccurate Humidity Readings: Perform the salt solution calibration as described in Section 4.2. Ensure the device is not placed near sources of extreme temperature or humidity fluctuations.
• Inaccurate Temperature Readings: Ensure the device is not exposed to direct sunlight, drafts, or heat sources. Allow sufficient time for the device to acclimatize to its environment.
• Physical Damage: If the device is physically damaged (e.g., broken needle, cracked casing), it may affect its functionality. Contact customer support for assistance.

8. Specifications

9. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or visit the official TFA website. Keep your proof of purchase for any warranty claims.