The ERZ 2000-NG and ERZ 2000-DI volume correctors are approved and designed for custody transfer and energy measurement of hydrogen-containing natural gases with different hydrogen contents or pure hydrogen.
The following device families are available:
The ERZ 2000-NG can perform the K-number calculation (custody transfer) for pure hydrogen using the Beattie Bridgeman equation.
For admixtures with high hydrogen contents (>20%), the ERZ 2000-DI is the most elegant option. Here, with the help of SGERG 2008/ SGERG 2004, a K-number calculation is possible for gases with up to 100% hydrogen.