G 685-1
Gas Billing - Fundamentals of Energy Determination
Gasabrechnung - Grundlagen der Energieermittlung
Brief description
DVGW Code of Practice G 685 specifies the requirements for metering and regulates the procedures for energy metering and billing of gases at all entry and exit points where there is commercial or official traffic or where measurements are taken in the public interest. The gases must meet the requirements of DVGW worksheets G 260 "Gas quality" or G 262 "Use of gases from renewable sources in the public gas supply". It applies to all market participants involved in gas billing, e.g. metering point operators, network operators, transport customers and suppliers. This worksheet sets out requirements, procedures and conditions relating to the calorific value determination Energy determination on the basis of meter readings or load profiles Determination of compressibility figures Procedure for missing, disturbed or implausible measured values Traceability of calculations Calculation of differential values determined. If the requirements of this worksheet are deviated from, the respective procedure must be approved by the responsible verification authority. The verification authorities check compliance with this worksheet as part of the monitoring of gas billing. The regulations are also applicable to other fuel gases, unless there are specific deviating regulations (e.g. TR-G15).
