7400 Gas turbine meter
The preamplifiers are used for transferring the coil signal to distant devices over long distances. Both turbine instruments can be installed either directly on the turbine or remotely and are compatible with inherently protected, explosion / flameproof or weatherproof approvals. At the factory the average K-factor is calculated for each turbine by using water as the calibration material. This multipoint test is conducted at six different flow levels and verifies linearity and repeatability across a small range of the meter size. The average K-factors produced in water are about 1 percent variance from each other when contrasted with coal. A calibration of the water is also an important tool for validating a meter in the region. For field water testing procedures please visit the supplier.
The output of the meters listed in this bulletin is focused on historical gas calibration conducted using gas media at separate, world-class calibration facilities. A structural prejudice which the calibration lab may have is not included in our accuracy argument. Repeatability is constrained by the precision of the gas sample, but usually ± 0.02% in water.