Any questions?

We are happy to provide further information available.

Business: +49 2452 962 400
Industry: +49 2452 962 777
End-consumers: +49 2452 962 450
  1. Products & Services
  2. Measuring devices
  3. Air quality
  4. Data loggers
  5. BZ30 CO2 Air Quality Data Logger

BZ30 CO₂ Air Quality Data Logger

For autonomous long-term recording of indoor air quality

This CO₂ air quality data logger is the ideal combination measuring device for architects, experts and every heating, ventilation and air conditioning engineer.

The BZ30 provides you with all functions and equipment features of the BZ25 and is further equipped with a large data memory for 50,000 measured values for the long-term recording of carbon dioxide concentrations, air temperature and humidity values in freely definable measuring intervals from 1 second to 12 hours.

The recorded data can be conveniently transferred to the connected PC via a fast USB connection and there analysed and logged using the analysis software included in the scope of delivery.

Owing to the integrated Li-Ion battery, the BZ30 is also suited for mobile application in addition to the stationary table installation.

The simultaneous recording of humidity and temperature values plus CO₂ concentrations offers property managers or landlords optimal possibilities to monitor the ventilation habits.

A few practical benefits:

  • Accurate and permanently stable NDIR measurement of carbon dioxide concentrations in the room air
  • Simultaneous display of CO₂ values, room temperature, humidity, date and time
  • Minimum and maximum value function for CO₂, air temperature and humidity
  • Carbon dioxide alarm function with acoustic alarm signal for freely definable limit values
  • Additional symbolic CO₂ indicator display
  • Large backlit display with easily legible measured value indication
  • Autonomous long-term recording of carbon dioxide concentration, room temperature and humidity
  • Storage for 50,000 measured values
  • Freely definable saving interval
    from 1 second to 12 hours
  • USB interface for measuring data transfer
  • Free standing or wall mounted
  • PC analysis software


BZ30 CO2 Air Quality Data Logger show in Trotec online shop

BZ30 CO2 Air Quality Data Logger

A complex name for a simple and clever principle: the BZ30 can measure indoor temperature and relative humidity and the CO2 concentration in the air as well as being able to log all this data for future reference. Thus unsupervised long-term measurements are possible.

165.49 £ incl. VAT
Show net price (VAT not included)



Technical data
General information
  Article number 3.510.205.015
Air temperature [°C]
  Measuring principle NTC
  Min. measuring range [°C] -5
  Max. measuring range [°C] 50
  Display resolution [°C] 0.1
  Accuracy ± [°C] 1
Air temperature [°F]
  Min. measuring range [°F] 23
  Max. measuring range [°F] 122
  Display resolution [°F] 0.1
  Accuracy ± [°F] 1.8
Relative humidity
  Min. measuring range [% RH] 0.1
  Max. measuring range [% RH] 99.9
  Display resolution [% RH] 0.1
  Accuracy [% RH] 5
CO₂ concentration
  Measuring principle NDIR
  Min. measuring range [ppm] 0
  Max. measuring range [ppm] 9,999
  Accuracy [ppm] 75
  Accuracy [%] 5
  Accuracy ±75 ppm / ±5 %
  Display resolution [ppm] 1
Memory organisation
  Sensing interval > 1 s
  Saving interval > 1 s
  Memory 50,000 Measured values
Device control
  Push buttons
Housing design
Power supply
  Internal (battery) 1x 3.7 V, Li-Ion battery or 230 V power adapter
  Length (packaging excluded) [mm] 110
  Width (packaging excluded) [mm] 61
  Height (packaging excluded) [mm] 105
  (packaging excluded) [kg] 0.074
Standard scope of delivery
Standard scope of delivery
  Measuring device
  Power adapter
  USB connection cable
  CD-ROM with Smartgraph PC software
  Operating manual
Ascertainable measured values and functions
Internal sensors
  Relative humidity [%]
  CO₂ concentration [ppm]
  Air temperature [°C]
  Air temperature [°F]
Functions and features
  Minimum value display
  Maximum value display
  Hold function
  Switching function °C/°F
  Backlit display
  CO2acoustic alarm function
  Feel-good indication
  Battery status indication

 standard equipment

 optionally available

 not available


Alternative products

BZ30 with alternative products:

start comparison
BZ25 CO2 Air Quality Monitoring Device show in Trotec online shop

BZ25 CO2 Air Quality Monitoring Device

Too much CO2 in the air can have a variety of effects, not just fatigue and tiredness, on the occupants of a room. Find out if it’s just the poor air quality that’s putting you, your colleagues or the students in your class to sleep ...

You save: 18.39 £

137.91 £ 119.52 £ incl. VAT
Show net price (VAT not included)


BZ05 Indoor Thermohygrometer show in Trotec online shop

BZ05 Indoor Thermohygrometer

At first glance the BZ05 could easily be mistaken for some kind of modern-looking alarm clock. Well it is actually. But in addition to being able to tell you the date and the time the BZ05 indoor thermohygrometer can also accurately measure air temperature and relative humidity.

You save: 35 %

18.34 £ 11.91 £ incl. VAT
Show net price (VAT not included)