ISCO 4230 Operating instructions

4230 Flow Meter
Installation and Operation Guide
Part #60-3233-142 of Assembly #60-3234-051
Copyright © 1994, 2003. All rights reserved, Isco, Inc.
Revision P, April 2003

Foreword
This instruction manual is designed to help you gain a thorough understanding of the
operation of the equipment. Isco recommends that you read this manual completely
before placing the equipment in service.
Although Isco designs reliability into all equipment, there is always the possibility of a
malfunction. This manual may help in diagnosing and repairing the malfunction.
If the problem persists, call or email the Isco Customer Service Department for assis-
tance. Contact information is provided below. Simple difficulties can often be diag-
nosed over the phone. If it is necessary to return the equipment to the factory for
service, please follow the shipping instructions provided by the Customer Service
Department, including the use of the Return Authorization Number specified. Be
sure to include a note describing the malfunction. This will aid in the prompt
repair and return of the equipment.
Isco welcomes suggestions that would improve the information presented in this man-
ual or enhance the operation of the equipment itself.
Isco is continually improving its products and reserves the right to change
product specifications, replacement parts, schematics, and instructions
without notice.
Contact Information
Phone: [phone] (USA, Canada, Mexico)
[phone] (Outside North America)
Repair Service: [phone] (Analytical and Process
Monitoring Instruments)
[phone] (Samplers and Flow Meters)
Fax: [phone]
Email address: [email protected]
Website: www.isco.com
Return equipment to: 4700 Superior Street, Lincoln, NE 68504-1398
Other correspondence: P.O. Box 82531, Lincoln, NE 68501-2531
Revised February 12, 2003

- ADDENDUM -
The 4230 flow meter will become inaccurate displaying the depth, flow, and
total flow when exposed to electromagnetic fields in excess of 1.0V/m between
105 MgHz and 820 MgHz. It is suggested that the instrument be placed in a
location where these electromagnetic fields are not present, or the source of the
radiation is removed from the vicinity of the instrument if possible.

Model 4230
IMPORTANT – PLEASE READ
WARNING
The installation and use of this product may require you to work in locations where
you could be seriously injured or even
killed. Take whatever precautions are neces-
sary to ensure your safety before entering the installation. Never work alone or unsu-
pervised. Install and operate this product in accordance with all applicable safety and
health regulations, as well as any appropriate local ordinances.
This product is often installed in confined spaces. Examples of confined spaces are manholes, pipelines,
digesters, and storage tanks. These places can be dangerous or fatal if you are not suitably prepared. The
primary hazards are the presence of poisoned air, the lack of ventilation, and the possibility of falls. Other
hazards may be present, as well. Work in such places is governed by OSHA 1910.146, and may require a
permit before entering.
Material Safety Data Sheets (MSDS) for chemical agents supplied or recommended for use with this
product are in the MSDS Appendix.These sheets provide information about possible hazards from the
chemicals. Additional MSDS, covering various proprietary agents (name-branded or trademarked mix-
tures) that can also be used with this product, are available from the manufacturers of those agents.
NOTE
FLOWLINK is a registered trademarks of Isco Inc. All other brand or product names used in this manual are trademarks
or registered trademarks of their respective companies and/or organizations.
This manual uses the following notations to set
apart hazard warnings and notes:
DANGER
DANGER describes situations which if not
avoided,
will result in loss of life or serious
personal injury. The emphasis is on a clear
and immediate threat to your life or safety.
WARNING
WARNING describes situations which if not
avoided,
could
result in loss of life or serious per-
sonal injury. The emphasis here is on the
poten-
tial
for a serious accident.
CAUTION
CAUTION describes situations which if not avoided,
may result in moderate personal injuries, property
damage, or damage to the equipment.
NOTE
NOTES draw your attention to specific features, prac-
tices, or other information useful in setting up or
installing the product.

i
4230 Flow Meter
Table of Contents
Section 1 Introduction
1.1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.2 Compatible Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.3 Operating Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.3.1 Operation of the Bubbler System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.3.2 Pressure Transducer Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.3.3 Automatic Drift Compensation Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.4 Software Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.5 Controls, Indicators, and Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.6 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.7 How to Make Battery Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
1.7.1 Calculating Current Draw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Section 2 Programming
2.1 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2 Operation of the Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.3 Keypad Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.4 Programming Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.5 Description of Program Steps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.5.1 Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.5.2 Flow Conversion Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.5.3 Adjust Level, Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2.5.4 Reset Totalizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2.5.5 Sampler Pacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2.5.6 Sampler Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2.5.7 Alarm Dialout Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2.5.8 Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.5.9 Reports/History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.6 Interpreting the Program Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.7 Step 1 - Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2.7.1 Optional Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
2.7.2 Serial Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
2.8 Step 2 - Flow Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31
2.8.1 Flow Metering Inserts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36
2.8.2 Enter Maximum Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37
2.8.3 Programming the 4-20 mA Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37
2.9 Step 3 - Parameter to Adjust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
2.10 Step 4 - Reset Totalizer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
2.11 Step 5 - Sampler Pacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
2.12 Step 6 - Sampler Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48
2.13 Step 7 - Alarm Dialout Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-51
2.14 Step 8 - Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-54
2.15 Step 9 - Reports/History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-56
Section 3 Installation
3.1 Preparation for Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

4230 Flow Meter
Table of Contents
ii
3.1.1 Install Desiccant Canister . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1.2 Install External Desiccant Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1.3 Opening the Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.2 Connection to a Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.2.1 Low Power Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.2.2 Isco Sampler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.2.3 Isco Nickel-Cadmium Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.2.4 Isco Lead-Acid Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.2.5 AC Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.2.6 External 12 Volt Direct Current Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.3 Bubble Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.3.1 Setting the Bubble Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.3.2 Bubble Rate and Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.3.3 Purging a Clogged Bubble Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
3.3.4 Adjusting the Bubble Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3.3.5 Locking the Bubble Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3.3.6 Effects of Changing the Bubble Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.3.7 Super Bubble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.4 4230 Mounting and Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.4.1 Carrying Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.4.2 Location of the Flow Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.4.3 Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3.5 The Bubble Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.5.1 Standard Bubble Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.5.2 Comparing Vinyl and Teflon Bubble Lines . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.5.3 Bubble Line Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.5.4 Teflon Line Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
3.5.5 Attaching the Teflon Bubble Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
3.5.6 Attaching the Vinyl Bubble Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
3.5.7 Installing the Bubble Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
3.5.8 High-Velocity Flow Streams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
3.5.9 Stilling Wells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
3.5.10 Flume Bubble Line Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
3.5.11 Bubble Line Extensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
3.5.12 Open Channel Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
3.6 Flow Metering Inserts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
3.7 The Bubbler Tube Retainer Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
3.8 Connection to a Sampler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
3.8.1 Connection to Other Isco Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
Section 4 Optional Equipment
4.1 4200T Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1.1 How it Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1.2 Modem and FLOWLINK Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.1.3 Connection to a Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.1.4 Types of Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.2 Connections to External Serial Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4.3 4 to 20 mA (Analog) Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4.3.1 External 4-20 mA Output Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4.3.2 Internal Analog Output Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.4 Tipping Bucket Rain Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.5 Isco FLOWLINK Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.6 High-Low Alarm Relay Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.6.1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4.6.2 Wiring to a 4200 Series Flow Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4.7 Parameter Sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
4.7.1 Installation of Parameter Probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11