Xylem WS700 User Manual

Global Water

800-876-1172 • globalw.com

Global Water

Instrumentation, Inc.

151 Graham Road

P. O. Box 9010

College Station, TX 77842-9010

T: 800-876-1172

Int’l: [phone], F: [phone]

E-mail : [e-mail]

WS700 Sampler

01-455
Publication N umber 38550512

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Global Water

800-876-1172 • globalw.com

Table of Contents

I. WS700 Checklist • • • • • Page 3
II. Inspection • • • • • • 3
III. Description • • • • • • • 4
IV. Installing the Water Sampler • • • • 5
V. Installing the Pickup Hose • • • • • 5
VI. The Control Panel • • • • • • 6
VII. Composite Sampling • • • • • 8
VIII. Discrete Sampling • • • • • • 8
IX. External Trigger mode • • • • • 9
X. Specifications • • • • • • 11
XI. Maintenance • • • • • • 12
XII. Troubleshooting • • • • • • 13
XIII. Warranty • • • • • • • 14
XIV. Appendix A: Sample Size vs. Head Height • • • 15
XV. Appendix B: Battery Life • • • • 16
XVI. Appendix C: Input and Output Connection • • • 16
XVII. Appendix D: Accessories • • • • • 17

* Copyright  Global Water Instrumentation, I nc. 2012

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Global Water

800-876-1172 • globalw.com

Congratulations on your purchase of the Global Water WS700
Water Sampler. This instrument has been quality tested and approved for
accurate and reliable operation. We are confident that you will find the
WS700 to be a valuable asset for your applications. Should you require
assistance, our technical st aff will be happy to help.

I. WS700 Checklist

a. WS700 Water Sampler
b. 12V Battery (Inside Enclosure)
c. Bat tery Cable
d. Battery Charger
e. Two Shorting Plugs
f. WS700 Manual

II. Inspection

The WS700 unit was carefully inspected and cer tified by Global Water’s Quality Assurance Team before shipping. If any damage has occurred during shipping, please notify Global Water Ins trum entation, Inc. and file a claim with the carrier involved.

Use the checklist to ensure that ever y thing needed to operate the WS700 was
received.

III. Description

The Global Water WS700 Sampler is designed s pec ifically to meet a wide variety
of sampling requirements including industrial discharge, process contr ol, wat er
and wastewater treatment plants, sewers, rivers and streams.

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Global Water

800-876-1172 • globalw.com

The WS700 Sampler can take individual “time weighted” composite samples, or it
can be set to take a full-bottle discrete or “Gr ab” sam ple. This is accomplished
with a Sample Size control having one position being res er v ed 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 s ec onds . This clears any debris
from the strainer at the end of the pickup hose and also em pties water from the
hose so the next sample is not contaminat ed by the pr ev ious one.

Inputs are provided for triggering the sam pler 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.

The WS700 Sampler is easily set up near industr ial dis c har ges or s treams. It
can also be suspended in a manhole for sewer flow sampling. The sampler
consists of a rugged, rainproof and lockable c arrying enclosure. The enclosure
houses a peristaltic sampling pump, s am ple bottle, a control panel, and a
rechargeable battery. A battery c har ger and s ample pickup hos es are also
provided.

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Global Water

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IV. Installing the Water Sampler

a. The sampler should be placed upright (it will no t work if placed on its back or

side).

b. Open the sampler and remove the battery charger from the unit. Store the

charger for later use.

c. To s ec ur e the sample bottle:

1. Screw the bottle cap/float swit c h onto the sample bottle

2. Place the bottle into the sampler enclos ur e

3. Insert the end of the peristaltic pum p’s hose in the hole at the top of the
bottle cap

4. Plug the float switch lead into the jack on t he front of the control panel

d. The sampling unit can be secured from vandalis m and s trong winds by one of

the following methods:

1. Mount unit on post and lock closed

2. Lock closed and chain handles to a solid str uc ture ( s uc h as a tree, post, or
building)

3. Enclose and lock unit in a steel electrical box

e. Avoid drilling holes in the enclosure if poss ible. If holes must be drilled in the

enclosure avoid drilling through t he c ontrol panel enclosure. Any holes drilled
through the enclosure must be sealed wit h s ome ty pe of silic one glue to
prevent water from entering the case and causing equipm ent failure.

f. The unit is water resistant, not water proof. The unit must be located well

above the expected water level to cont inue to provide reliable service.

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Global Water

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V. Installing the Pickup Hose

The pickup hose should be installed in a wastewater discharge channel or stream. The
pickup strainer should be submerged under water and should be situated to avoid
contact with the channel bottom.

VI. The Control Panel

1. Pump.

2. Start Delay: This setting delays sampling by a pres et amount of
time. If no delay is desired, set the control to zero. Only the first
sample taken by the pump is delayed, except as described later in
the section titled “External Trigger Mode”.

3. Sample Interval: Sets the time interval between composite samples.
The “External Trigger” position is res er v ed for using the Trigger and
Rain Sensor inputs to initiate sampling as des c r ibed later in the
section titled “External Trigger M ode”.

4. Sample Size: Sets the size for a single compos ite sample. The
sample size settings are approximate and apply to a head height of
four feet. The switch position marked “Full” caus es the pump to work

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