Global Water WS700 Instruction Manual

Global Water

800-876-1172 • globalw.com

Global Water

Instrumentation, Inc.

11390 Amalgam Way

Gold River, CA 95670

T: 800-876-1172

Int’l: [phone], F: [phone]

globalw.com

WS700 Sampler

01-455 11/30/09

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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

Appendix A: Sample Size vs. Head Height • • • 15

XIV.
XV. Appendix B: Battery Life • • • • 16
XVI. Appendix C: Input and Output Connection • • • 16
XVII. Appendix D: Accessories • • • • • 17

XVIII. CE Certification • • • • • 18

* Copyright © Global Water Instr umentation, Inc. 2006

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Global Water

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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 staff will be happy to help.

I. WS700 Checklist

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

II. Inspection

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

Use the checklist to ensure that everything needed to operate the WS700 was
received.

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III. Description

The Global Water WS700 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 WS700 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.

The WS700 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 a peristaltic sampling pump, sample bottle, a control panel, and a
rechargeable battery. A battery charger and sample pickup hoses are also
provided.

Global Water

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Global Water

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IV. Installing the Water Sampler

a. The sampler should be placed upright (it will not 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 secure the sample bottle:

1. Screw the bottle cap/float switch onto the sample bottle

2. Place the bottle into the sampler enclosure

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

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

d. The sampling unit can be secured from vandalism and str ong winds by one of

the following methods:

1. Mount unit on post and lock closed

2. Lock closed and chain handles to a solid structure (such as a tree, post, or
building)

3. Enclose and lock unit in a steel electrical box

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

enclosure avoid drilling through the control panel enclosure. Any holes drilled
through the enclosure must be sealed with some type of silicone glue to
prevent water from entering the case and causing equipment failure.

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

above the expected water level to continue to provide reliable service.

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.

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VI. The Control Panel

1. Pump.

2. Start Delay:
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:
The “External Trigger” position is reserved for using the Trigger and
Rain Sensor inputs to initiate sampling as described later in the
section titled “External Trigger Mode”.

4. Sample Size:
sample size settings are approximate and apply to a head height of
four feet. The switch position marked “Full” causes the pump to work
as a discrete sampler, filling the bottle full in one sample. Note: In
the Full position, the sampler will shut off the pump after one hour,
even if the bottle is not full.

5. Trigger In:
selected by the Sample Interval control. A signal from an external
device will cause a single sample to be taken according to the Size
control. The External Trigger mode is described in more detail later
in the section titled “External Trigger Mode”. Refer to the
Specifications section for details about the input pulse requirements.

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This setting delays sampling by a preset amount of

Sets the time interval between composite samples.

Sets the size for a single composite sample. The

This input works in “External Trigger” mode only, as

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