WS700-750 Water Samplers
Combined Composite/Discrete Samplers for a Range of Sampling Requirements
Features
- Ideal for wastewater, industrial, and environmental sampling
- Easy to use, state of the art controller Does composite or discrete sampling, or both at the same time (WS750). Output provided for use with optional datalogger
- Automatic backflush clears pickup strainer and hose
- Lightweight and easy to carry
- Rugged construction for harsh environ- ments
- Meets federal, state and local wastewater regulations
Description
Global Water’s WS700 single-bottle and WS750 dual-
bottle samplers combine all of the features you need to
meet a wide variety of sampling requirements, includ-
ing those for stormwater, rivers and streams, indus-
trial discharge, water and wastewater treatment, and
wastewater collection.
Global Water’s WS700 single-bottle and WS750 dual-
bottle samplers combine all of the features you need to
meet a wide variety of sampling requirements, includ-
ing those for stormwater, rivers and streams, indus-
trial discharge, water and wastewater treatment, and
wastewater collection.
Powerful Operation
The WS700-750’s state of the art controller gives you
power over your sampling process. With the sample
size control, you can adjust the WS700-750 to take
one of 15 individual time-weighted composite sample
sizes, from 50 ml to 2 liters. You can also set the size
control to the full-bottle discrete setting for full-bottle
grab samples. The sample interval control allows you
set the time between individual composite samples to
one of 15 time settings, from 5 minutes to 12 hours,
or you can enable the external trigger mode. A start
delay timer allows you to start multiple samplers in
the field at the same time, or to delay drawing a sam-
ple after a triggering event so that your sample better
represents the water source. An automatic 15-second
The WS750 dual bottle sampler allows you to take
a time or flow (with optional flow monitor) weighted
composite sample and a discrete (grab) sample at the
same time.
backflush cycle clears any debris from the strainer and
empties the water from the hose so the next sample
is not contaminated. The sample bottle is equipped
with a float switch that automatically turns off the
peristaltic sampling pump if the water bottle becomes
full. The sampler’s 5 AH rechargeable battery will
power the unit for several months or through several
sampling events
Unique Independent Pump Operation
A unique feature of the WS750 model is the ability
to set the sampling mode for each pump and bottle
individually. This allows you to take a time-weighted
composite sample and a discrete (grab) sample at
the same time. Or you can take two individual time-
weighted composite samples with different size set-
tings for each pump.
Useful Inputs and Outputs
Both the WS700 and WS750 include trigger inputs
for each pump and bottle so you can control sample
collection from an external closed contact switch like
a water level sensor, rain gauge sensor, or external
process controller. You can use a 4-20 mA sensor
to trigger sample collection with a 4-20 mA to Pulse
Converters (see the RG750 and RG755 in the Acces