Cost model · BeamCell® extractive vs process FTIR
How many species do you actually need to measure
FTIR resolves a broad spectrum in one instrument. A TDLAS analyzer scans a narrowband region around a small number of absorption lines. The cost comparison turns almost entirely on how many species your application requires, so that is the first thing this model asks.
One TDLAS analyzer covers a limited number of species. Above that, the comparison needs several analyzers and the arithmetic turns. This model finds the point where it turns and tells you which side of it you are on.
Process FTIR analyzer
BeamCell® extractive analyzer
Shared assumptions and financing
Enter your figures above
The model runs as soon as the fields are filled.
Analyzers required
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Cost per species, FTIR
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Cost per species, BeamCell
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Cost against number of species measured
FTIR BeamCell Your species count
| Cost line | FTIR | BeamCell | Difference |
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Method. Capital and installation fall in month zero. Service and consumables accrue evenly across the year. Everything is discounted to present value at the rate you set. The number of BeamCell analyzers is the species count divided by the species covered per analyzer, rounded up, and every cost on that side scales with the analyzer count. The measurement point count multiplies both sides equally.
The starting values are illustrative placeholders, not published prices for any product and not a quotation for any competing instrument. Replace them with the quotations you hold. Currency is a display label only and no conversion is applied, so enter every figure in the same currency.
What this model does not price. FTIR records a broad spectrum, so it can return species you did not specify when you bought it, which has real value if your permit conditions or your process change. It also handles unknown or unexpected components in a way a narrowband instrument cannot. Against that, a TDLAS analyzer scans a narrow region around selected absorption lines and can reach lower detection limits on those specific lines. Neither of those differences appears as a number here. If your species list is long or likely to grow, treat the cost result as one input among several rather than the answer.
