Siemens SITRANS P DS III Operating Instructions Manual page 234

Glossary
srlin2
"srli2" or "srlin2" is a type of square root extracting characteristic curve for the output current.
This characteristic curve type is proportional to the flow rate, linear in two levels up to the
application point and has a pre-defined application point of 10%.
"srli2" or "srlin2" are synonymous and technically there is no difference between them. The
abbreviation "srli2" is used in sections that refer to the on-site operation of the pressure
transmitter. The reason for the abbreviation is that the pressure transmitter display is
restricted to five characters. The abbreviation "srlin2" is used for HART operation.
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SITRANS P DS III with HART
Operating Instructions, 06/2013, A5E00047092-09