EmitScan's three-standard methodology stack covers field measurement procedure, instrument performance validation, and engine Tier classification — producing data that is defensible to any technical audience, regulator, or ESG auditor.
Measurement methodology
Each standard in our methodology stack addresses a different layer of measurement credibility — what we measure, how the instrument is validated, and what the results mean against regulatory limits.
The primary international standard for non-road mobile machinery and stationary industrial engines — exactly the asset types EmitScan measures. Parts 8178-2 and 8178-11 specifically govern field (in-situ) measurements using PEMS, meaning engines do not need to be removed to a laboratory.
Governs instrument performance — not the engine. ASTM D6522 mandates pre-test zero and span checks using traceable calibration gas, post-test drift validation, sensor warm-up requirements, sample conditioning standards, and cross-sensitivity correction. This is what separates a credible measurement from a number someone wrote down.
The globally recognised benchmark framework for non-road engine Tier classification. Although a US regulation, it is the standard used worldwide by operators, insurers, and ESG auditors to understand where a given engine sits in the emissions performance spectrum. Tier 1 through Tier 4 Final span from pre-2000 legacy engines to current best-available technology.
Instrument coverage
The Testo 350 platform covers all primary measurement standards applicable to land-based non-road industrial engines. The Maritime variant extends coverage to shipboard MARPOL compliance measurement.
Regulatory environment
EmitScan measurement data is structured to satisfy regulatory requirements across all GCC jurisdictions. Here is the key framework applicable to each country where we operate.
Any compliance question