DHD20160317 1) Calibration Loop vs meter calibration. In install checklist ensure start and end gas meter readings taken alongside those shown by Loop to provide traceability back to meter calibration and beyond. Intermediate cross-check readings useful too, from time to time and to spot and rectify faults/mismatches early. Ensure follows ISO 17025 measurement requirements. Maybe add photos of meter, install (and valves before and after), for additional evidence. 2) Relevant stds incl IPMVP, ISO 50015 & 50006. Paul to point or or provide relevant extracts. 3) Anchoring bulk HDD observations (eg at EGLL) with Met Office samples. Describe methodology, compute anchor points in (say) 2016Q1, get sign-off from Paul/NPL. METAR (from EGLL) is traceable; compare with degreedays.net. Historical and current data matching. 4) Describe our protocol based on above, eg including features such as secure error-checked path from device to server. A) generate template B) generate test plan C) verification report includes (A) and (B). Provide comments in terms of size of study and practical limitations. Allows computation of (eg) certainty levels and error bars. 5) Take early data samples, evaluate against protocol, get preliminary sign-off from Paul/NPL for process. Create flow chart or similar with worked example data sample.