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3.4 Prerequisites for compatible OMS
meters
Compatible OMS meters must have a manufacturer
code accompanied by a serial number:
- DME for Diego Metering meters,
- EFE for Engelmann Sensor GmbH meters,
- DWZ for Lorenz GmbH & Co. KG meters.
These compatible meters feature the following
characteristics:
- Short OMS frame,
- OMS mode: C1 (Format A or B) or T1,
- Without encryption or with OMS-compliant mode
5 AES128 encryption (developer master key),
- Maximum transmission interval:
240 seconds.
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