D-Flow has developed evaluation platforms for hot and cold air,
natural gas, fuel vapour, propane and other applications at
capacities from DN 10 up to DN 70.
The D-Flow UFO ASIC handles two pairs of transducers for dual-path
solutions. Multi-path solutions can be achieved by using more
than one ASIC on the same electronics board.
Typical performance of gas flow meters based on D-Flow technology
is displayed below. The performance has been validated in air
at temperatures between 15°C and 55°C. D-Flow gas flow
platforms comply with the uncertainty statements of the natural
gas specification ENV 14236. All uncertainty statements are
made with a 95 % confidence level.
Zero flow stability: ±
2 mm/s.
Maximum flow velocity: ~30 m/s.
Repeatability: ± 0.3%.
Total accuracy: < ± 1% of measured
value in a range of 1:150.
Total accuracy: < ± 2% of measured value in
a range of 1:300.
