Environmental & Emissions Gas Analysis Solutions

EN 14181 is the European quality assurance framework for CEMS. QAL1 is type-approval of the analyzer by an accredited test house (e.g. MCERTS / TUV / DEKRA). QAL2 is the site-specific calibration of the installed analyzer against parallel reference-method measurements during commissioning. QAL3 is the ongoing zero / span drift monitoring that the plant operator performs between annual surveillance tests (AST). CEMS procurement should pin the target QAL1 certifications explicitly rather than accept marketing claims.

GHG MRV under 40 CFR Part 98 and EU ETS Regulation 2018/2066 focuses on cumulative greenhouse-gas mass (CO₂, CH₄, N₂O) tied to fuel and production records, whereas stack CEMS focuses on concentration limits for criteria pollutants (SO₂, NOₓ, CO, PM). Many sites run both: CEMS for compliance against hourly / daily limits, MRV reporting for annual inventory. The instrumental reference methods are different — MRV often accepts calculated emissions from fuel analysis plus continuous CO₂ validation, while CEMS requires approved analyzers throughout.

A typical EU waste-to-energy stack runs: UV-DOAS or UVF for SO₂; UV-DOAS or CLD for NOₓ; TDLAS or FTIR for HCl (ZS8100-HCl with heated Hastelloy sampling); TDLAS or FTIR for HF (ZS8100-HF); heated FID for VOC / TOC (heated-FID total-hydrocarbon analyzer); and NDIR for CO / CO₂ / O₂ diluent. Mercury is typically handled via a partner-sourced continuous Hg analyzer; GESHINE does not currently offer an in-house Hg CEMS SKU.

Only partially. Ambient duty runs at sub-ppb concentrations with long-interval stability under 40 CFR Part 50 reference-method definitions, which means ambient UVF SO₂ and CLD NOₓ instruments are tuned differently from stack-range versions — different reaction-cell geometry, different sample flow, different zero-gas discipline. The technology family is shared (UVF, CLD, NDIR) but the individual instruments are not interchangeable between stack and ambient duty.

H₂S process monitoring at wastewater / pulp / landfill / biogas sites — on digester off-gas, scrubber vents and enclosed collection ducts where a defined optical path exists — uses the in-situ cross-stack TDLAS H₂S analyzer (ZS8300-H2S class), reading H₂S directly across the process gas with no extractive sample train or consumable. Open-air fenceline and perimeter ppb odor monitoring is a distinct ambient duty, served by referenced gold-film or electrochemical methods that can feed a wireless / 4G-uplinked network and a wind-rose-correlated odor model. ZS8600-MG provides a multi-gas cabinet variant for smaller footprints.

A greenhouse gas analyzer continuously measures the regulated GHG species at a stack — primarily CO₂, with N₂O and CH₄ where the source and fuel require them — for monitoring, reporting, and verification (MRV) under frameworks such as 40 CFR Part 98, the EU ETS (Regulation 2018/2066), and national ETS schemes. CO₂ is typically measured by NDIR and N₂O by gas-filter-correlation infrared; the concentration data combines with stack flow, O₂ / dilution, and QA records in the DAHS to produce the reportable mass-emission rate. GESHINE supplies a CO₂ (NDIR) channel that supports greenhouse-gas reporting where the installed CEMS and QAL scope allow, and an N₂O (GFC) channel as a project-scoped measurement with certification and approval confirmed per project — not a blanket certified channel. See the carbon-dioxide analysis and nitrous-oxide analysis pages for per-gas detail.