Xylem WS750 WASTEWATER/STORMWATER SAMPLER - Manual (Page 4)

Global Water
800-876-1172
• globalw.com
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III. Description
The Global Water WS750 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 750 Sampler can take two individual “time weighted” composite samples, or
the sampler can be set to take full-bottle discrete or “Grab” samples. Each pump
has its own sample bottle and control for setting the size of individual samples.
This allows each pump to be set as either a composite or discrete sampler
independently of the other or, in the case of two composite samplers, have
different size settings for each pump.
A 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 pumps 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 signals from an external process controller or other monitoring device.
Individual outputs are also available for monitoring when each of the pumps has
taken a sample, using a data logger or similar recording device.
The WS750 Sampler is easily set up near industrial discharges or streams. It
can also be suspended in a manhole for sewer flow sampling.
The Sampler consists of a rugged, rainproof and lockable carrying enclosure.
The enclosure houses two peristaltic sampling pumps, two sample bottles, a
control panel, and a rechargeable battery. A battery charger and sample pickup
hoses are also provided.