Sample connection

ISO 10628-2 (groups 24-25, fittings and piping) / PIP PIC001 / ISA 5.1

Drawn as

A small branch from the line with a needle or isolation valve, ending in an open end over a small bottle; sometimes a box labelled "SC" or a sample cooler.

Meaning

Manual sample point for lab analysis (oil-in-water, BS&W, H2S, glycol). Closed-loop samplers return to the process. Listed, not modelled.

Variants

ISA style: a bubble with AX or SP
Closed sample systems are drawn as a box with in and return lines