Siemens SENTRON PAC2200CLP Product Manual page 92

Technical specifications
8.2 Labeling
(1)
90
DE-M - Metrology symbol for national approval in Germany (DE = Germany; M = Metrology)
20 = year of manufacture, in this example 2020: The year shown after the metrology mark is
the year in which the mark was affixed (see Metering and Calibration Act §14 (4))
1948 = Notified body (CSA Group Bayern GmbH)
Equipment Manual, 06/2021, L1V30820585B-02
PAC2200CLP