Gas Analyser
A combustion gas analyser samples exhaust gases from a compatible boiler or heating appliance through a flue probe. Installed sensors record specified concentrations, while temperature and pressure functions depend on the configuration. Other values are calculated from these readings and selected fuel data. The sampling point, sensors and fuel setting determine what the result represents.
Kimo supplies dedicated Kigaz instruments for combustion work and the Kimo AMI 310 multifunction platform for separate HVAC and environmental measurements. A flue gas analyser and a multi-probe environmental instrument perform different roles, even when both display gases, temperature or pressure. At Celtic Surveys, we supply equipment for both purposes within our Environmental Monitoring selection and explain which functions belong to each configuration.
Why Is Combustion Analysis Important?
Combustion depends on the relationship between fuel, combustion air, appliance condition and the movement of exhaust gases. Visual observation alone cannot show oxygen concentration, carbon monoxide concentration or the calculated relationship between measured values. Recorded results give you a consistent basis for reviewing combustion under the conditions present when the sample was taken.
During compatible boiler servicing, commissioning and adjustment, a boiler gas analyser records operating conditions before and after changes. Differences in the values may indicate where further checks are needed, but results must be interpreted through the applicable appliance instructions, fuel settings and service procedure. A portable analyser is not a permanent alarm, and one test does not confirm that an installation is safe or compliant.
What Does a Combustion Gas Analyser Measure?
Direct measurements depend on the sensors installed in the instrument. Kimo Kigaz configurations commonly include oxygen and carbon monoxide sensors, while selected models support additional gas sensors. The available gases, ranges and sensor arrangements vary, with the confirmed configuration determining which measurements belong to each model.
A flue gas analyser may also record flue temperature and ambient or combustion-air temperature when the appropriate inputs and probes are fitted. Supported equipment measures flue pressure or differential pressure, while our separate Pressure instrumentation covers other compatible pressure-measurement tasks. These readings contribute to the assessment but remain distinct from the gas concentrations sampled by the analyser.
Carbon dioxide, excess air, combustion efficiency, flue losses and other outputs are often calculated rather than sensed directly. These calculations use measured values together with configured fuel information, which makes correct fuel selection important. Maximum, minimum, live and stored values also depend on the model and measurement mode.
Where Is Combustion Analysis Used?
Combustion analysis is used with compatible boilers and heating appliances during servicing, commissioning, adjustment and performance checks. The probe is placed at the relevant sampling point to sample exhaust gases while the appliance operates under the required test conditions. Repeated readings then show how results change after cleaning, maintenance or an approved adjustment.
The Kimo AMI 310 belongs to a different measurement platform. With the appropriate probe or module, it covers air velocity, airflow and pressure for HVAC work. Related Air / Wind Speed equipment focuses on air movement, while Humidity instruments record atmospheric moisture. These measurements do not turn the AMI 310 into dedicated combustion equipment.
Some compatible AMI configurations measure ambient carbon monoxide or carbon dioxide through supported Air Quality probes. Its thermal inputs and probes support separate Temperature work. The exact capability depends on the package, connected probe or module. An instrument-only unit therefore does not contain every available function.
What Affects Combustion Gas Analyser Results?
Where you position the flue probe affects the sample. Insertion depth, sampling-point condition, probe stability and leaks around tubing or connections alter the gases reaching the sensors. Appliance load and operation need to remain suitable for the required procedure, with enough time for the reading to stabilise before values are recorded.
Correct fuel configuration matters because several outputs are calculated from the measured gases and stored fuel data. An incorrect setting changes carbon dioxide, efficiency, excess-air or loss calculations even when the direct sensor readings remain unchanged. Comparable tests require consistent sampling positions, operating conditions and measurement settings.
Sensor condition, calibration status, filters, tubing and the water trap also influence performance. Condensate, blocked filters, contamination, low battery condition or insufficient purging may interfere with sampling and sensor response. These parts need attention in line with the instrument instructions, particularly before results from separate visits are compared.
Order a Kimo Combustion Gas Analyser from Celtic Surveys
We supply Kimo Kigaz combustion analysers for selected boiler and heating-appliance work, together with Kimo AMI 310 instruments and compatible HVAC probes or modules. The required gases, sensor arrangement, ranges, probe, temperature and pressure functions, reporting needs and package contents must match the intended measurement.
Our team will help you compare confirmed specifications without treating the Kigaz and AMI platforms as interchangeable. Calibration requirements, sensor replacement, filters, water traps, batteries, software, printers and accessories also require confirmation for the individual model and package.
Need help choosing a Kimo combustion gas analyser or AMI 310 instrument for your work? Call 01 801 1335 or email sales@celticsurveys.ie for practical product advice before buying.