Indoor air quality probe for CO2, temperature, humidity and absolute pressure

SKU 0632 1543

Use the probe to quickly check the indoor climate, for example in offices, production areas or in warehouses. As well as temperature, humidity and absolute pressure, it also measures the carbon dioxide concentration (CO2).

The CO2 concentration is a primary indicator of indoor air quality. Poor air quality due to excessive concentrations of CO2 can cause tiredness, lack of concentration and even illness. Therefore the CO2 concentration should normally not exceed 1000 ppm.
Intelligent calibration concept

The probe offers maximum digital measurement reliability. The digital probe allows readings to be processed directly in the probe. This technology eliminates instrument measurement uncertainty. The probe can be returned on its own (without the measuring instrument) for calibration. Calculating the determined calibration data in the probe generates a zero-error display.

4 functions in one probe: measurement of CO2, humidity, temperature and absolute pressure

Rapid checking of the indoor climate

Prevention of poor air quality in indoor rooms via CO2 measurement

Intelligent calibration concept

The probe (in conjunction with the appropriate measuring instrument) is ideal for evaluating the indoor air quality.


Temperature - NTC

Measuring range

0 to +50 °C


±0.5 °C


0.1 °C

Humidity - Capacitive

Measuring range

0 to +100 %RH


±(1.8 %RH + 0.7 % of mv)


0.1 %RH

Absolute Pressure

Measuring range

+700 to +1100 hPa


±3.0 hPa


0.1 hPa

Ambient CO

Measuring range

0 to +10000 ppm


±(75 ppm + 3 % of mv)

0 to +5000 ppm

±(150 ppm + 5 % of mv)

5001 to +10000 ppm


1 ppm

General technical data

Diameter probe shaft

21 mm

Length probe

305 mm