30 FLOWSIC500 · Operating Instructions · 8025733/1GMJ/V4-2/2022-07 · © SICK Engineering GmbH
Product description
Subject to change without notice
2.7.3 Extension measurement capability up to 30% hydrogen
By default, the FLOWSIC500 has the ability to measure a hydrogen content of up to 10% in
natural gas. Starting with firmware version 2.17.00, this range can be extended up to 30%
with an additional license. Accuracy class 1.0 is always maintained.
The license can be activated ex works when ordering the device or can be obtained from
SICK at a later date. When activating the license for gas flow meters in the field, the
national regulations must be taken into account.
2.7.4 Gas Quality Indicator (GQI)
When commissioning the FLOWSIC500 (from FW2.15), the current gas composition and a
permissible deviation can be parameterized via the Gas Quality Indicator (GQI) in FLOW-
gate™. The gas quality is continuously monitored. If the gas composition is changed by
admixing other gas types, e.g. biogas, the operator receives status information as soon as
the Gas Quality Indicator (GQI) of the FLOWSIC500 exceeds the parameterized permissible
deviation. Changes in the gas quality can thus be detected.
As of firmware 2.17, the hydrogen content in the natural gas can be monitored via an
option/license with the gas quality indicator. As a basis for monitoring, the gas composition
of the natural gas in the meter must be parameterized with FLOWgate™. If the set limit
value is exceeded with fluctuating hydrogen feed-in, the FLOWSIC500 reports this back to
the operator via the status. In this way, changes in the hydrogen content and thus also the
heating values can be detected in real time. The Gas Quality Indicator based on i-diagnos-
tics™ forms the basis for ensuring contractually agreed gas qualities where no gas quality
measurement by means of a gas chromatograph or no measurement of the hydrogen con-
tent is available.
For a meter in the field, activation of the feature via a SICK license is only possible in com-
pliance with national regulations.
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