English to Spanish Tech/Engineering Engineering (general) Measuring Systems in the Gas Industry

Rotary Meters
There are two major installation set-ups for
rotary meters:
 Meters having temperature compensation
(mechanical or electronic) and PFM
 Meters and Electronic Volume Corrector
(EVC)
For the first set-up we have three components
of uncertainty of corrected volume:
uncertainty of uncorrected volume UVm =±1%
(for 1% rangeability), uncertainty of temperature
compensation UTm =±0.5%, and uncertainty
of pressure regulation UPm =±1%. (The
uncertainty of calculation of corrected volume
using uncorrected volume, pressure and temperature
is negligible. This calculation usually
resides in billing software applications.) Using
equation (27) to combine the three components,
the uncertainty of corrected volume is
±1.5%.
For the second set-up, we have uncertainty
of uncorrected volume and EVC. Typical
uncertainty of an EVC is ±1% and includes
uncertainties of pressure measurement, temperature
measurement, compressibility, and
signal processing in EVC. Total uncertainty
is ±1.4%