Xylem WS705 IMPROVED COMPOSITE/DISCRETE WATER SAMPLER - Manual (Page 4)

Global Water
800-876-1172
• globalw.com
- 4 -
III. Description
The Global Water WS705 Sampler is designed specifically to meet a wide variety
of sampling requirements including industrial discharge, process control, water
and wastewater treatment plants, sewers, rivers and streams.
The sampler consists of a rugged, rainproof and lockable wheeled transport case
with a comfort grip handle on top and retractable handle on the back. The
enclosure houses a control panel with peristaltic sampling pump, sample bottle,
pickup hose and strainer with quick-disconnect fittings, a rechargeable battery
with 3-stage charge controller in a self contained battery box, and a energy
efficient regulated battery charger.
The WS705 Sampler can take individual “time weighted” composite samples, or it
can be set to take a full-bottle discrete or “Grab” sample. This is accomplished
with a Sample Size control having one position being reserved for “Full” bottle”.
A Sample Interval control sets the time between individual composite samples
and has a provision for allowing the sampler to be triggered from external
sources.
A Start Delay timer can be set to start sampling after a preset time. This allows
multiple samplers to be deployed in the field and have them turn on at the same
time. The delay can also be used to hold off sampling to let the water source
flush out debris or other contaminants.
After each sample, the pump will reverse for 15 seconds. This clears any debris
from the strainer at the end of the pickup hose and also empties water from the
hose so the next sample is not contaminated by the previous one.
Inputs are provided for triggering the sampler based on water level, a rain gauge
sensor or a signal from an external process controller or other monitoring device.
An output is also available for monitoring when the pump is taking samples, using
a data logger or similar recording device.