The PVS5120C is a composite sampler that deposits its water samples into a nine-liter container. This sampler uses a vacuum sampler controller, the VSC100, to allow a Modbus RTU master, SDI-12 master device, simple pulse input, or Campbell Scientific PakBus data logger to control and communicate with the water sampler. This sampler is lightweight, portable, and battery-powered. It can fit in a small-sized manhole and be suspended by a stainless-steel harness for sewer applications.  The PVS5120C can be used with a standard or large pump. The standard pump takes samples at 1.6 m/s (5.1 ft/s) for horizontal draws of 7.6 m (25 ft). The large pump takes samples at 2.2 m/s (7.1 ft/s) at 7.6 m (25 ft). Both of these velocities are typical values measured at sea level. Intake velocities will decrease as altitude increases.