ISCO GLS Pocket Manual
GLS
Sampler
This pocket guide is not intended to replace
the instruction manual provided on CD. Read
the Glacier Manual on CD thoroughly before
operating the sampler.
COPYRIGHT © 2002 by
Isco, Inc., 4700 Superior St., Lincoln,
Nebraska, U.S.A. 68504
Phone: (402) 464-0231
Toll Free: (800) 228-4373
FAX: (402) 465-3022
Part #69-2953-030
Revision A, March, 2003
GLS
Sampler
Table of Contents
1. Installation
1.1 Introduction . . . . . . . . . . . . . . . . . . . . 1-1
1.2 Sampler Preparation Checklist . . . . . 1-2
1.3 Inspecting the Pump Tube . . . . . . . . 1-3
1.4 Discharge Tube . . . . . . . . . . . . . . . . . 1-4
1.5 Installing a Bottle . . . . . . . . . . . . . . . 1-5
1.6 Sample Cooling . . . . . . . . . . . . . . . . . 1-5
1.7 Installing a Power Source . . . . . . . . . 1-6
1.7.1 To install an Isco Model 900
1.8 Suction Line and Strainer . . . . . . . . . 1-7
1.9 Connecting External Devices . . . . . 1-10
1.10 Positioning the GLS . . . . . . . . . . . . . 1-11
1.11 Locking the GLS . . . . . . . . . . . . . . . 1-14
2. Programming
2.1 The Keypad . . . . . . . . . . . . . . . . . . . . 2-1
2.2 Programming the GLS . . . . . . . . . . . 2-2
2.3 One-button Programming . . . . . . . . . 2-3
2.4 Standard Programming . . . . . . . . . . . 2-4
power source: . . . . . . . . . . . . . 1-6
1.8.1 Cutting the Suction Line . . . . 1-8
1.8.2 Attaching the Strainer . . . . . . 1-8
1.8.3 Connecting the Suction Line . 1-9
1.10.1 Positioning the Strainer and
Suction Line . . . . . . . . . . . . . 1-12
2.3.1 Stored Program . . . . . . . . . . . . 2-3
2.4.1 Sample Pacing . . . . . . . . . . . . 2-5
2.4.2 Pacing Interval . . . . . . . . . . . . 2-6
iii
GLS Sampler
2.4.3 Bottle Volume . . . . . . . . . . . . . 2-7
2.4.4 Number of Samples . . . . . . . . 2-8
2.4.5 Sample Volume . . . . . . . . . . . . 2-9
2.4.6 Program Start Time . . . . . . . 2-10
2.4.7 Suction Line . . . . . . . . . . . . . 2-13
2.5 Storing a Program . . . . . . . . . . . . . . 2-14
2.6 Setting the Time and Date . . . . . . . 2-14
2.7 Calibration . . . . . . . . . . . . . . . . . . . . 2-15
3. Operation
3.1 Starting a Program . . . . . . . . . . . . . . 3-1
3.1.1 Program Start Times . . . . . . . 3-2
3.1.2 Sampler Inhibit . . . . . . . . . . . 3-2
3.2 Run State Displays . . . . . . . . . . . . . . 3-4
3.2.1 Collecting a sample . . . . . . . . 3-4
3.2.2 Waiting to sample . . . . . . . . . . 3-4
3.2.3 Errors . . . . . . . . . . . . . . . . . . . 3-5
3.2.4 Pausing or Stopping a
3.3 Program Completion . . . . . . . . . . . . . 3-6
3.4 Post-sampling Activities . . . . . . . . . . 3-6
3.5 Errors . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.6 Grab Samples . . . . . . . . . . . . . . . . . . 3-11
3.7 Replacing the Pump Tube . . . . . . . . 3-12
Program . . . . . . . . . . . . . . . . . . 3-5
3.4.1 Recovering the Sampler . . . . . 3-7
3.4.2 Preparing the Full Sample
Bottle . . . . . . . . . . . . . . . . . . . . 3-7
3.4.3 Viewing the Log . . . . . . . . . . . 3-8
iv
Section 1 Installation
1.1 Introduction
This pocket guide contains:
• Installation instructions,
see Section 1.2
• Programming instructions,
see Section 2
• Operating instructions,
see Section 3
GLS
Sampler
1-1
GLS Sampler
1.2 Sampler Preparation Checklist
The following checklist can be used as a guide
to prepare the GLS for each use.
1. Inspect the pump tube.
See Section 1.3.
2. Check the discharge tube.
See Section 1.4.
3. Install the bottle.
See Section 1.5.
4. Icing the bottle (optional).
See Section 1.6.
5. Connect a power source.
See Section 1.7.
6. Connect a suction line and
strainer. See Section 1.8.
7. Connect external devices
(essential for flow-paced
sampling or sampler
inhibiting). See Section 1.9.
1-2
8. Place the GLS in position. See
Section 1.10.
9. Calibrate sample volumes
(optional). See Section 2.7.
10. Lock the GLS (optional). See
Section 1.11.
Section 1 Installation
1.3 Inspecting the Pump Tube
Inspect the pump tube before running a
program. If the pump tube fails, the GLS will
not be able to collect samples.
WAR NING
Moving parts can cause injuries. Remove power
before inspecting pump tube.
To inspect the pump tube:
1. Disconnect the power from the 12V Input
Power connector.
2. Remove the pump housing cover by
loosening the four thumbscrews.
3. Visually inspect the pump tube for cracks
where it is compressed by the rollers. If the
tube is cracked, it must be replaced. See
section 3.7.
4. Visually inspect the inside of the pump
housing. The housing and rollers should be
free from debris.
5. Replace the pump housing cover and
tighten the thumbscrews.
Note
The GLS will display a pump tube warning as part of the
View Log screens when it exceeds 500,000 pump
counts.
1-3
GLS Sampler
Note
The GLS automatically resets the pump tube count to
500,000 after it displays the warning message.
Note
Isco pump tubes are made from medical-grade
Silastic™ tubing. This tubing will not contribute any
organic material to the samples.
1.4 Discharge Tube
The discharge tube is located inside the center
section. It is a
mm) long piece of medical-grade Silastic™
tubing.
The discharge tube should be well fitted over
the bulkhead fitting and routed through the
tube guide. The tube must be free of twists or
kinks. The tube should extend about 1
(38 mm) past the end of the tube guide (even
with the bottom of the center section). This
length of tubing is necessary for the GLS to
detect an overfilled bottle.
3
⁄8-inch (9 mm) I.D., 81⁄4-inch (210
1
⁄2 inches
1-4
Section 1 Installation
1.5 Installing a Bottle
The base section of the GLS is designed to hold
five different types of bottles:
• 2.5 gallon (10 liter) Polyethylene
• 2.5 gallon (10 liter) Glass
• 1 gallon (3.8 liter) Polyethylene (with
bottle deck)
• 1 gallon (3.8 liter) Glass (with bottle
deck)
• 2 gallon (7.6 liter) ProPak Liner
To install the bottle:
2.5 and 2 gallon (10 and 7.6 liter) - place the
bottle in the GLS base section.
1 gallon (3.8 liter) - place the bottle deck into
the GLS base section. Set the bottle on top of
the bottle deck.
1.6 Sample Cooling
You can cool the samples by placing crushed ice
around the outside of the bottle. When using a 2
or 2.5 gallon (7.6 or 10 liter) bottle, the base
section can hold 10 pounds (4.5 kg) of ice. When
a bottle deck and 1 gallon (3.8 liter) bottle is
installed, the base section can hold 14 pounds
(6.3 kg) of ice. Frozen gel packs are sometimes a
convenient alternative to ice. For maximum
cooling, fill the base (with the bottle and deck in
place) with water and freeze the base section
and its contents.
1-5
GLS Sampler
1.7 Installing a Power Source
The GLS must be powered by a 12-Volt DC
power source. Isco recommends using one of the
following Model 900 series power sources:
•Batteries -
· Model 934 Nickel Cadmium Battery,
4.0Ah
· Model 946 Lead-Acid Battery, 6.5Ah
• Power Packs -
· Model 913 High Capacity Power Pack,
120 Volts AC
· Model 923 High Capacity Power Pack,
240 Volts AC
· Model 914 Battery Backed Power Pack,
120 Volts AC
· Model 924 Battery Backed Power Pack,
240 Volts AC
1.7.1 To install an Isco Model 900 power source:
1. Place the power source into the center
section recess.
2. Secure the power source by pulling the
elastic bands over it and attach the clip to
the two posts. Note that there are two sets
of holes - use the set that places the clip
against the power source.
3. Attach the two-pin connector to the Input
Power connector on the back of the
controller.
1-6
Section 1 Installation
4. Power Packs Only - Route the AC line cord
though the center section’s Tubing/Cable
port.
Note
If you use a battery to power the GLS, always install a
fully charged one before running a program.
Note
Refer to Isco’s Power Products Guide, P/N
60-9003-092, for a complete description of each power
source.
1.8 Suction Line and Strainer
The suction line carries the liquid from the
sampling point to the GLS pump tubing. The
GLS is designed to use:
1
⁄4-inch (6 mm) I.D. vinyl tubing
•
3
•
⁄8-inch (9 mm) I.D. vinyl tubing
3
•
⁄8-inch (9 mm) I.D. Teflon® tubing with a
protective polyethylene jacket
The strainer reduces the possibility of debris
plugging the suction line. Types available are:
3
• CPVC body (
• Stainless Steel (
Your application will dictate the best
combination of suction line and strainer.
To prepare the suction line and strainer:
1. Cut the suction line to the shortest feasible
length.
⁄8-inch I.D. only)
1
⁄4- and 3⁄8-inch I.D.)
1-7
GLS Sampler
2. Attach a strainer to the suction line (Section
1.8.1).
3. Connect the suction line to the pump tube
(Section 1.8.2).
Note
The vinyl suction line does contain a very low ppm
(parts per million) level of phenols. If this affects your
samples, use the Teflon suction line.
1.8.1 Cutting the Suction Line
The suction line should be cut to the shortest
feasible length. This reduces the possibility of
cross-contamination between sample volumes
and extends the battery life. The suction line
can be easily cut with a knife.
When cutting the suction line, keep in mind the
length must be cut to the nearest whole foot or
decimeter. The length is measured from end to
end, without the strainer or tubing coupler.
If you have altered the length, press the
Calibrate button, and enter the new suction
line dimensions.
1.8.2 Attaching the Strainer
Items required:
Strainer Suction line
To attach the strainer to the suction line:
1. Heat the end of the suction line to make it
more pliable.
2. Screw the threaded end of the strainer into
the suction line.
1-8
Section 1 Installation
1.8.3 Connecting the Suction Line
Vinyl Suction Line
To connect the
1
⁄4-inch (6 mm) or 3⁄8-inch (9 mm)
vinyl suction line to the pump tube:
Items required:
Suction line with strainer attached
Tubing coupler
1. Insert the end of the tubing coupler with the
black clamp into the upper pump tube.
2. Position the black clamp around the pump
tube and squeeze the sides of the clamp
together.
3. Push the vinyl suction line onto the end of
the tubing coupler with the white clamp.
4. Position the white clamp around the suction
line and squeeze the ends together.
Teflon Suction Line
To connect the Teflon suction line to the pump
tube:
Items required:
Suction line with strainer attached
3
⁄4-inch (19 mm) diameter hose clamp
Tool to tighten clamp
1. Place a hose clamp on the upper pump tube.
2. Insert about 1 inch (25 mm) of the Teflon
suction line into the upper pump tube.
3. Position the clamp over the joined area and
tighten it.
1-9
GLS Sampler
1.9 Connecting External Devices
The GLS can be used with external devices that
control the sampler pacing, sampler inhibiting,
or both. The sampler pacing input can control
the rate of sample collection so that it is
proportional to the flow rate of a channel. This
input must be used when the Flow Paced
program option is selected (see Sample Pacing,
section 2.4.1). The sampler inhibit input can
delay the GLS operation until a monitored
parameter meets user-defined conditions.
These devices connect to the 6-pin Flow Meter
Connector located on the back of the GLS
controller. Compatible Isco devices include:
• Pacing and Inhibiting devices:
· 4100 Series Flow Loggers
· 4200 Series Flow Meters
· 2100 Series Flow Meters
• Pacing devices (non-Isco device
interfaces):
· 4-20 mA Input Interface
· Pulse Duration Input Interface
• Inhibiting devices:
· Liquid Level Actuator
Note
Flow pacing input signal (pin C) requirements - a 5 to 15
volt DC pulse or isolated contact closure of at least 25
milliseconds in duration.
1-10
Section 1 Installation
Note
Sampler inhibit signal (pin F) requirements - a low
(grounded) level of at least 5 seconds inhibits the
operation. A high (or open) level of at least 5 seconds in
duration restores the operation.
1.10 Positioning the GLS
There are a few considerations when selecting a
site for the GLS. The foremost concern should
be personal safety.
WAR NING
The installation and use of this product may
subject you to hazardous working conditions that
can cause you serious or fatal injuries. Take any
necessary precautions before entering the
worksite. Install and operate this product in
accordance with all applicable safety and health
regulations, and local ordinances.
The following points should also be considered:
• Level surface - The GLS should be placed
on a level surface to prevent tipping or
spills.
• Support - The surface or mounting
method must be able to support the GLS
at full capacity. A GLS with battery, full
sample bottle, and ice may weigh as
much as 63 pounds (28.6 kg).
• Environmental - The GLS is designed for
use in harsh environments. However, you
should avoid installing the GLS in
1-11
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