Applications

METER SELECTION AND APPLICATION

ROMET offers a variety of measuring instruments to meet the diverse requirements posed by the natural gas industry. The following guidelines are offered to assist in the selection of a suitable mechanical or electronic measuring device for a specific gas application.

MECHANICAL METER TYPES

STANDARD COUNTER (STD CTR)

STD CTR meters are intended for use where compensation to standard base condition is not required.

STD CTR meters do not have any gas compensating features.

When stable gas temperatures and pressures are significantly higher or lower then standard base condition, predetermined temperature and/or pressure factors can be independently applied to correct the STD CTR index readings to a base condition. Alternatively, it can be paired with a standalone volume corrector (refer to AdEC®).

STANDARD INSTRUMENT DRIVE (STD ID) AND DIGITAL COUNTER INSTRUMENT DRIVE (DCID)

When temperature, pressure or supercompressibility factors are a matter for concern, STD ID and DCID meters permit the mounting of a variety of gas recording or correcting instruments to handle the require factor(s) needed for further processing (refer to AdEC®). The STD ID and DCID are similar in design and function, however, the DCID meter has a built in non-compensated mechanical index counter.

TEMPERATURE COMPENSATED (TC) COUNTER

TC meters are intended for use where temperature compensation to standard base condition is required.

At higher fixed pressures, a predetermined pressure factor can be independently applied to correct the TC compensated index reading to the required base condition. TC meters have a non-compensated and a temperature compensated mechanical index counter.

TEMPERATURE COMPENSATED INSTRUMENT DRIVE (TCID)

TCID meters are similar in nature to the TC meter.

TC meters are intended for use where temperature compensation to standard base condition is required and the supply pressure requires monitoring by an electronic pressure recorder. The TCID meter may also be used as a mechanical temperature back-up system when paired up to an electronic temperature/pressure recorder or volume corrector (refer to AdEC®).

 

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