Autonomous Valve Shutoff Configuration
The AC-250NXS valve can be configured for autonomous shutoff the during
following events:
1. High gas pressure is detected, exceeding the configured threshold value for
a set duration of time. The high-pressure threshold can be configured by
utilities.
2. High gas temperature is detected, exceeding the configured threshold value
for a set duration of time. The high temperature threshold can be configured
by utilities.
3. High/Reverse gas flow is detected, exceeding the configured threshold
value for a set duration of time. The high/Reverse flow threshold can be
configured by utilities.
4. Tamper event is detected (unauthorized opening of service cover or
unauthorized battery removal).
The autonomous shutoff can be disabled for a specific event by the operating
utility.
For example, utilities can disable the autonomous shutoff valve closure when a
tamper event is detected, and it can instead configure the unit to only report an
alert to the HES.
THE HEAD-END SYSTEM IS THE HARDWARE AND SOFTWARE THAT RECEIVES THE STREAM OF
METER DATA BROUGHT BACK TO THE UTILITY THROUGH THE AMI.
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