For different applications, probes fulfilling the specific measurement purpose do exist.
- CO multi-hole probe: this probe is used to determine the CO concentration in the frame of a safety-orientated check of a combustion plant. The multi-hole probe samples gas over the complete diameter of the exhaust pipe thru several holes.
- Ring slot multi-hole probe: this probe is a special one measuring gas concentrations in the ring slot of double-walled exhaust gas systems. They are consequently mainly used by gas analysis at condensing heating plants.
- High-temperature probe: high-temperature probes are available for measurement applications involving gas temperatures higher than 500°C (thermal power stations, engines, industrial firing applications). They are long-term temperature-resistant up to 1.100°C and available in different lengths (with/without heat protection shield and/or high-temperature cone).