Digital Weather Station TFA-Dostmann 31.1028 Black Indoor Thermometer Hygrometer

The Digital Weather Station TFA-Dostmann 31.1028 is a compact indoor thermometer and hygrometer that measures temperature and relative humidity with high precision using a Swiss precision sensor. The device displays current temperature, humidity, dew point and wet-bulb temperature, and includes battery-powered operation in a durable plastic housing (dimensions 50 × 50 × 173 mm).

Advantages

The instrument provides precise temperature and humidity readings suitable for professional applications. It shows maximum and minimum recorded values and offers a data-hold function for easy reading. Dew point and wet-bulb temperature calculations are available for more detailed climate assessment. The compact size and battery operation make the unit portable and easy to install indoors.

Suitable for

• Climate control in storage and test rooms (ISO 9000 related monitoring)
• Measurements for heating, ventilation and air conditioning (HVAC) tasks
• Comparative and service measurements during maintenance and inspections
• General indoor climate monitoring in homes, offices and laboratories

Key specifications

• Model: TFA-Dostmann 31.1028
• Sensor: Swiss precision sensor
• Measurements: temperature, relative humidity, dew point, wet-bulb temperature
• Display functions: current value, max/min, data hold
• Power: AAA batteries
• Dimensions: 50 mm × 50 mm × 173 mm
• Housing: durable plastic

How to use

Insert the required AAA batteries and place the device indoors at the location where you want to monitor the climate, away from direct heat sources or drafts for representative readings. Read the current temperature and humidity from the display; use the max/min function to review recorded extremes and press the data-hold button to freeze a reading for recording. Refer to the markings on the display to view dew point and wet-bulb temperature when needed.

Usage recommendations

For accurate and repeatable indoor measurements, position the unit at a typical breathing height and avoid placing it near windows, radiators or air vents. Replace batteries promptly when low to ensure continuous operation and recalibrate or compare periodically if used for formal quality assurance tasks.