The Maurer® pneumatic cell sampler is designed for connection in a fast flow loop (bypass) from the pipeline to be sampled. The sampler comprises a flow cell integrated with a sample collection mechanism. Having the sampler in a fast loop rather than directly in the pipeline has advantages for system integrity, reliability, and servicing.
The sampler is essentially a power driven metering pump. The sampling mechanism is a tubular stem with an inner concentric capture tube and a piston. Each cycle first captures a precise volume of sample and then pumps it through a back pressure valve to a sample collection receiver. The sampler can be operated at up to a maximum of 30 grabs/min.
The in-line sampler installed in a properly designed system will take representative grabs of sample at a pre-determined rate normally relative to the pipeline flow rate. The composite of the 1,000 to 10,000 grabs collected during a pipeline transfer provides a representative sample of the oil batch, for lab analysis and reference.