Maintenance and meter exchange
FLOWSIC500 · Operating Instructions · 8025733/1GMJ/V4-2/2022-07 · © SICK Engineering GmbH 113
Subject to change without notice
7.4 Meter exchange
7.4.1 Prerequisites for meter exchange
7.4.2 Hazards during meter exchange
7.4.3 Sequence of meter exchange
To exchange the gas flow meter, proceed as follows:
1 Download the user-specific configuration of the installed gas flow meter (→ p. 116,
§7.4.6).
2 Disconnecting electrical connections (→ p. 117, §7.4.7).
3 Removing the installed gas flow meter (→ p. 118, §7.4.8).
4 Installing the replacement gas flow meter (→ p. 122, §7.4.9).
5 Perform a leak tightness check (→ p. 124, §7.4.10).
6 Connect the new gas flow meter to the electric system ( → p. 46, §3.4).
7 Upload the user-specific configuration of the previously installed gas flow meter to the
new gas flow meter (→ p. 127, §7.4.11).
8 Check the function of the gas flow meter (→ p. 131, §7.4.12).
9 If necessary, secure metrologically (→ p. 131, §7.4.13).
NOTICE:
Ensure that the meter exchange is carried out according to the national
regulations for Ex and pressure applications of your country.
WARNING: Hazards due to combustible gases or high pressure
Natural gas under line pressure flows through the gas flow meter during
running operation. The gas flow meter may only be exchanged when the
equipment is at a standstill.
Before commencing installation work:
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Ensure the pipeline is free from pressure and free from combustible gases.
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Purge the pipeline with inert gas if necessary.
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Observe the safety information in §1.1 (→ p. 10) and §3.1 (→ p. 38).
NOTICE:
The gas flow meter may only be exchanged by skilled persons who, based on
their technical training and knowledge in pipeline construction as well as
knowledge of the relevant regulations, can assess the tasks given and
recognize the hazards involved.
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Observe the information in §1.4 (→ p. 13).
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In case of doubt, please contact the local SICK Customer Service.
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