The CO₂ measurement is based on a 2-source, 2-beam process. CO₂ measurement with long-term stability is guaranteed thanks to the proven non-dispersive infrared (NDIR) CO₂ measurement cell. The unique patented auto-calibration procedure compensates for aging of the infrared source and guarantees high reliability, long term stability and eliminates the need of periodical recalibration in the field.

The device is supplied with CO2 probe with 1m cable. Cable lengths 2, 4 or 10 meters available optionally.

Included in delivery:

• H5521 sensor
• Traceable calibration certificate
• Quick start manual
• Technical support at discussion forum