Up to four gas components can be measured simultaneously with the ULTRAMAT 23 gas analyzer: up to three infrared-active gases such as CO, CO₂, NO, SO₂, CH₄, plus O₂ with an electrochemical oxygen sensor.

ULTRAMAT 23 basic versions for:

• 1 infrared gas component with/without oxygen measurement
• 2 infrared gas components with/without oxygen measurement
• 3 infrared gas components with/without oxygen measurement
• With the ULTRAMAT 23 gas analyzer for use in biogas plants, up to four gas components can be measured continuously: two infrared-sensitive gases (CO₂ and CH₄), plus O₂ and H₂S with electrochemical measuring cells.
• With the ULTRAMAT 23 gas analyzer with paramagnetic oxygen cell, up to four gas components can be measured continuously: three infrared-active gases, plus O₂ ("dumbbell" measuring cell).