Campbell Scientific PVS4100/4120/4150 Portable Automatic Samplers - Manual (Page 26)

Section 1. Product Overview
1-18
1.4 Portable Sampler Model Selection Guide
PVS Samplers come in a variety of models designed for variations in weight,
pump strength, battery, larger intake hose (5/8” ID), ease-of-transport, fitting in
manholes, discrete or composite sampling, protection rating for dust and water,
signal options, and budgets.