Siemens Sitrans LR200 Instruction Manual page 170

1)
Flat-Face Flange markings
Flange markings located around the outside edge of the flat-face flange identify the
flange assembly on which the device is mounted.
Flat Face Flange Identification
Serial No. Logo
MMDDYYXXX
Serial number: a unique number allotted to each flange, including the date of manufacture
(MMDDYY) followed by a number from 001 to 999.
Flange series: the Siemens Milltronics drawing identification.
Nominal size: the flange size followed by the hole pattern for a particular flange class. For
example,
– a 2 inch ANSI B 16.5 150 lb class flange (North America)
– a DN 80 EN 1092-1 PN16 class flange (Europe).
Material: the basic flange material (AISI or EU material designation). North American
material codes are followed by European ones. For example, material
designation 316L/1.4404.
Heat code: a flange material batch code identification.
Threaded Connection Markings
Threaded connection markings are found on the flat face/faces of the process
connection.
Logo Serial Number
MMDDYYXXX
Serial number:a unique number allotted to each flange, including the date of manufacture
(MMDDYY) followed by a number from 001 to 999.
1)
Constant thickness series.
Page 162 SITRANS LR200 (HART) – INSTRUCTION MANUAL
Flange Series
Series Nominal Size
2 150
25556
DN 80 PN16
Thread Size
Heat
Material
Code
316L/ 1.4404 or
A1B2C3
316L/ 1.4435
Thread Series
1.5
Welded Assembly
Identification
Flange Heat Code
Series No.
25546 A1B2C3
NPT
BSP
G/PF
7ML19985JP02