Liquid environment thermometer TFA 14.4000 — indoor, °C, 24×135 mm

The TFA 14.4000 liquid environment thermometer is a compact mechanical instrument for measuring indoor air temperature in degrees Celsius. Designed for simple ambient temperature monitoring, this lightweight thermometer features a clear liquid column display and a slim white plastic body measuring approximately 24 × 135 mm and weighing about 20 g. It is intended for basic, maintenance-free temperature checks where an easy-to-read analogue indication is preferred over electronic sensors.

Advantages

The thermometer provides a direct, instantaneous visual reading without the need for batteries or electronic calibration. Its plastic housing is lightweight and unobtrusive, making it easy to place on walls or stand in small spaces. The liquid column offers a reliable mechanical indication of temperature changes and the simple construction reduces the likelihood of faults associated with electronic devices.

Suitable for

• Monitoring room temperature in homes and apartments
• Temperature checks in offices and meeting rooms
• Use in storage rooms, pantries or wine cabinets where constant power is not available
• Basic indoor climate monitoring in classrooms or workshops

Key specifications

• Measurement type: liquid column (mechanical)
• Measurement unit: degrees Celsius (°C)
• Intended location: indoor use
• Material: plastic housing
• Dimensions: approximately 24 × 135 mm
• Weight: approximately 20 g
• Color: white

How to use

Place the thermometer on a wall or a stable vertical surface at least a few decimeters away from direct heat sources such as radiators, ovens or direct sunlight to ensure representative room readings. Allow the instrument several minutes to equilibrate to the room temperature before reading the liquid column. For vertical mounting, ensure the thermometer is positioned straight so the liquid column can move freely. No setup, batteries or calibration are required for routine use.

Usage recommendations

For the most accurate indoor measurements, avoid mounting directly above or below heating or cooling vents and keep the thermometer away from drafty doors and windows. Clean the plastic surface with a soft, damp cloth; avoid abrasive cleaners or solvents that could damage the housing.