In the framework of Work Package 2 ‘Methodology and test protocols’, this deliverable describes the selection of measuring devices to be tested. THOTH2 project focuses on energy measurement in natural gas infrastructure, but also includes measuring devices for emissions detection in the gas grid.
The selection is based on the provided information of the measuring devices installed in the existing gas grids of the four TSOs (Enagás, GAZ-SYSTEM, GRTgaz and Snam) and one DSO (INRETE) participating in the project. As summary:
• Gas meters: 25 meters selected.
o Transmission grid: 13 meters selected, including rotary pistons, turbine and ultrasonic types in
the Qmax range from 160 to 8,000 m3/h.
o Distributiongrid:12metersselected,includingdiaphragm,thermalmassandultrasonictypes in the Qmax range from 6 to 100 m3/h.
- Pressure transducers: 6 transducers selected, including piezoresistive and resonant technologies.
o Quality analysers: 6 water dew point analysers selected, including aluminium oxide sensor, ceramic metal oxide moisture sensor and TDLAS technologies. - Flow computers:
o 2 methods selected for compressibility factor calculation (AGA8 and SGERG-88).
o 1modelselectedfortestingwithEU-typeexaminationcertificateforAGA8andSGERG-88,and
a method valid for pure hydrogen.
• Leak detectors: 10 detectors selected, including catalytic, infrared, semiconductor, thermal conductivity and electrochemical technologies.
Contact with manufacturers shall be initiated to request their collaboration in the project by providing the selected measuring devices. In just in a few cases, partners are able to provide selected measuring devices.
Technical specifications for each device, such as materials, operating range, nominal pressure, etc., will be established according to the availability of existing ones in the consortium or the capabilities of manufacturers for providing them.
