LaMotte 2020 ClearTrace Series User manual

2020 ClearTrace
In-line Turbidity System
Code 5-0113-24V
Code 5-0113-110V

Preface
This instruction manual serves to explain the use of the LaMotte 2020 ClearTrace
Inline Turbidity System and is written to cover as many applications as possible.
Please do not hesitate to contact LaMotte or an authorized LaMotte representative
with questions or concerns.
The information presented in this instruction manual is subject to change without
notice as improvements are made, and does not represent any commitment
whatsoever on the part of LaMotte.
LaMotte cannot accept any responsibility for damage or malfunction of the sensor
due to improper use.
Contact Information
Mail: LaMotte Company • PO Box 329 • Chestertown, MD 21620
Phone: [phone] • 410-778-3100
Fax: [phone]
Email: [email protected]
Website: www.lamotte.com
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Safety Information
The LaMotte 2020 ClearTrace Turbidity System shall
be installed and operated only in the manner specified.
Only a skilled, trained or authorized person should
carry out installation, setup and operation of the
system.
Before using the system, make sure that is connected as
specified. Failure to do so may result in permanent
damage to the system of its components.
Protection against electric shock will be achieved only
by observance of the corresponding installation rules.
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Table of Contents
Preface ................................. 2
Contact Information ..........................2
Safety Information ........................... 3
1. Introduction ............................ 5
1.1 General Information .......................5
1.2 Intended Use ........................... 6
1.3 Safety Instructions ........................6
1.4 Removal from Service/Correct Disposal .............6
2. Product Description ........................ 7
2.1 Drinking Water Turbidity ....................7
2.2 Calibration Kits ..........................7
2.3 Replacement Parts ........................8
3. Mounting, Wiring, and Plumbing .................9
3.1 Mounting ............................. 9
3.2 Plumbing............................. 10
3.3 Valve Position for Operation ..................10
3.4 Wiring For 24 VDC and 110VAC Power ............11
3.5 Sample Chamber Details ....................14
4. Measure Screen Overview ....................15
5. Menu Structure..........................16
6. Calibration ............................ 19
6.1 Span Calibration ........................19
6.2 Zero Calibration .........................22
6.3 Temperature Calibration ....................24
7. Configuration ........................... 26
8. DataStick Comms Menu .....................27
9. Analog Output(s).........................27
11. Help Menu ............................ 30
12. Reset AV 38 ........................... 31
13. Performance Specifications ...................31
14. Limited Warranty ........................33
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1. INTRODUCTION
1.1. General Information
Thank you for purchasing the LaMotte 2020 ClearTrace Inline Turbidity
System.
The product is designed for continuous use in industrial process
applications and complies with safety regulations currently in force.
Improper use could lead to hazards for the user or a third-party, and/or
adverse effects to the plant or other equipment.
LaMotte does not accept any liability for damage that may arise if
information in this manual is not followed. Therefore, the operating
instructions and specifications must be read and understood by all persons
involved in installation and operation of this equipment.
This manual identifies safety instructions and additional information by
means of the following symbols:
This symbol draws attention to safety
instructions and warnings of potential
danger, which if neglected, could result in
injury to persons and/or damage to property.
This symbol identifies additional
information and instructions, which if
neglected, could lead to inefficient
operation and possible loss of production.
It is recommended that this manual be made accessible to everyone who
may need it as a reference.
Please contact LaMotte or an authorized LaMotte representative with any
questions.
5

1.2. Intended use
The LaMotte 2020 ClearTrace Inline Turbidity System is used for
continuous monitoring of low-range turbidity in drinking water
applications. The system also measures water temperature.
Data is reported through a local display and a scalable 4-20 milliamp
current output.
Any other use, or use not mentioned here, that is incompatible with the
technical specifications is deemed inappropriate. The operator is solely
responsible for any damage arising from such use.
Other prerequisites for appropriate use include:
•Observing the instructions, notes and requirements set out in this
instruction manual.
•Observing all local safety regulations.
•Observing all warnings and cautions in the documentation regarding
all products used in this measurement system, including the sensor,
mounting hardware, AV38 electronics and cabling.
•Observing the prescribed environmental and operational conditions.
•Observing chemical compatibility with all wetted materials.
1.3. Safety Instructions
The Turbidity System should be installed and operated
only by personnel familiar with the sensor and qualified for
such work.
A defective Turbidity System should be returned to
LaMotte for repair or replacement. Contact LaMotte to
obtain a Return Material Authorization (RMA) number.
No modifications to the Turbidity System are allowed. The
manufacturer/supplier accepts no responsibility for damage
caused by unauthorized modifications. The risk is borne
entirely by the user.
1.4. Removal from Service / Correct Disposal of the
Turbidity System
Removal from Service
•Disconnect the cable wiring from the controller terminal block.
•Remove the Turbidity System from the mounting hardware.
Correct Disposal of Unit
•When the Turbidity System is taken out of service, observe the local
environmental regulations for correct disposal.
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2. PRODUCT DESCRIPTION
2.1 Drinking Water Turbidity
The LaMotte 2020 ClearTrace Inline Turbidity System continuously
monitors low-range turbidity and temperature in drinking water
applications.
In the standard system configuration, data is reported through a local
display and a scalable4–20milliamp current output. All functions can be
accessed through a digital network with or without the local display
interface.
The Turbidity System uses a pre-calibrated turbidity probe mounted in a
DataStick and attached to a sample chamber specifically designed to
prepare water for low-range turbidity measurements. The chamber removes
bubbles from the water sample so that solid particles can be accurately
detected. Because the chamber volume is only 135 milliliters, only a small
amount of a turbidity standard is necessary to perform EPA mandated
calibrations.
A white light source in the chamber lid illuminates suspended particles
with a collimated white light. The chamber lamp will provide collimated
white light for up to two years and is easily changed from the top of the
system.
Measurement data from the turbidity probe is communicated through the
DataStick communication adapter for direct computer communications.
2.2 Calibration Kits
Calibration kits containing calibration standards and accessories are
available for use with the 2020 ClearTrace.
Code 5-0114
1 liter 0.0 NTU, calibration standard
1 liter 20.0 NTU, calibration standard
2 squirt bottles, for standards
2 cleaning swabs
Code 5-0115
1 gallon 0.0 NTU, calibration standard
1 gallon 20 NTU, calibration standard
2 spigots, for dispensing standards
2 squirt bottles, for standards
2 cleaning swabs
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2.3 Replacement Parts
Code 5-0124 Bulb and cable assembly
Code 5-0125 Sample chamber lid, without bulb
Code 5-0126 Replacement sample chamber
Code 5-0127 DataStick
Code 5-0126 Turbidity Probe
Code 5-0116 Turbidity standard, 0.0 NTU, 1 liter
Code 5-0117 Turbidity standard, 0.0 NTU, 1 gallon
Code 5-0118 Turbidity standard, 1.0 NTU, 1 liter
Code 5-0119 Turbidity standard, 1.0 NTU, 1 gallon
Code 5-0120 Turbidity standard, 10.0 NTU, 1 liter
Code 5-0121 Turbidity standard, 10.0 NTU, 1 gallon
Code 5-0122 Turbidity standard, 20.0 NTU, 1 liter
Code 5-0123 Turbidity standard, 20.0 NTU, 1 gallon
8

3. MOUNTING, WIRING AND PLUMBING
3.1 Mounting
The 2020 ClearTrace Turbidity System is mounted on a 12 inch x 12 inch
panel with four ¼ inch mounting holes. Use ¼ inch bolts with washers to
mount the panel to a wall. Make sure the sample chamber is level and
plumb to insure proper water levels are maintained in the sample chamber.
It is important to note that the system must be fixed securely to the wall to
insure the chamber does not move when handled or touched.
Mounting tools and equipment:
•½ inch Drill with drill bit for appropriate wall anchor.
•Four ¼ diameter bolts – 1.5 inches long.
•Four ¼ inch ID flat washers
•Wrench to turn bolts
•Level to insure the system is level when mounted
General Mounting Instructions:
1. Place the 12x12 inch panel on the wall where it is to be mounted and
mark the placement of the upper left hole.
2. Drill a mounting hole for the upper left corner with a masonry drill
bit.
3. Mount the Turbidity System with the upper left bolt.
4. Using a level, rotate the system until level, then mark the other three
mounting holes.
9
Figure 3.1: Wall mounting Clearances

5. Rotate the Turbidity System out of the way and drill the other three
mounting holes.
6. Place all four bolts with washers and tighten. Use shims if necessary
to insure the sample chamber is level.
3.2 Plumbing
The Turbidity System has an INLET, an OUTLET and a DRAIN.
Barb fittings are provided for the INLET and OUTLET in the event that
3/8 inch ID tubing is used.
When piping is used instead of tubing, remove the barb fittings to install ¼
inch NPT threaded pipe for the INLET, OUTLET and DRAIN.
OUTLET and DRAIN Plumbing Recommendations: Use straight ¼ inch
NPT threaded pipe that extends to a vented drain. Pipe restrictions that
result in back pressure for OUTLET and DRAIN are not allowed.
INLET Plumbing Recommendations: Use 3/8 ID tube or ¼ inch NPT
threaded pipe from sample source.
Flow rate must be between 250 to 750 ml/min (4 to 12 gph). If the source
is under pressure, use an appropriate flow or pressure valve to obtain
consistent flow. The turbidity sample chamber has an overflow weir that
must not be restricted.
3.3 Valve Position for Operation
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Measure
• Inlet valve open
• Drain valve closed
Water goes in the
INLET and out the
OUTLET. The sample
chamber should be full
Drain Sample Chamber
• Inlet valve closed
• Drain valve open
Drain sample chamber
and wipe clean prior
to calibration.
Calibration
• Inlet valve closed
• Drain valve open
When sample chamber
is empty and clean, pour
in 20 NTU standard until
it overflows to the
OUTLET (approx.
135 mL).

3.4 Wiring For 24 VDC and 110 VAC Power
Access to all User wiring is through the ¼ DIN junction box in the lower
left on the mounting panel.
The standard on-line turbidimeter requires 24 VDC for power and typically
draws 270 mA (6.5 watts) or optionally requires 100-240 VAC at 50/60 Hz
for power and typically draws up to 250 mA (10 watts).
Pg11 and Pg16 punch out conduit holes are provided for user terminal
connections. We supply Pg11 cord grips that can be removed.
Note: Loop 2 and Relay options are not currently available on 2020
ClearTrace System.
11
Turbidity User
Junction Box
Lamp assembly
screws into sample
chamber lid
Lamp cable connection
Terminal Connection to AV38
USER Terminal Connections:
See next page for wiring tables
24 VDC
or
110 VAC
Lamp
24 VDC or 110 VAC

USER WIRING FOR: 1 Current Loop without Host Communications
Terminal Wiring
1 24VDC or 110 VAC from Power Supply
2 Ground from Power Supply
3
4
5 Earth Ground from Power Supply
6 Current Loop -
7 Current Loop +
8
9
10
11
12
Note: Current Loop Requires 24 VDC or 110 VAC supply.
USER WIRING FOR: 24 VDC or 110 VAC Power
AC-Powered Models:
The AC-powered ClearTrace Tubidimeter comes with a Junction Box below the two
terminal blocks when ordered with one or two 4-20 mA analog outputs and/or host
comminications. If relays are ordered, a third terminal block is present.
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100-240 VAC Power Cable Wiring:
1. 100-240 VAC, 50/60 Hz power is wired to the wider-spaced
strip on left side of terminals.
2. Typically Black wire to 'LINE', White wire to 'NEUTRAL',
and Green wire to 'EARTH'
Lamp cable connection.
Red wire to 'LAMP+'
Black wire to 'LAMP-'
Terminal Connections
to AV38; .
Red wire to '+24V' terminal
Black wire to 'GND'
24 VDC power

USER WIRING FOR: Digital Communications to Host Computer with 2 Outputs
and Relay
Terminal Wiring
1 Red wire from Host Network (+24 VDC or 110 VAC)
2 BLACK wire from Host Network (Network Ground)
3 White wire from Host Network
4 Blue wire from Host Network
5 Shield wire from Host Network
6 OUTPUT 1 (-)
7 OUTPUT 1 (+)
8 OUTPUT 2 (-)
9 OUTPUT 2 (+)
10 Relay – Normally Open Terminal
11 Relay – Common Terminal
12 Relay – Normally Closed Terminal
Note: Output 2 and Relay options are not currently available on 2020
ClearTrace System.
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3.6 Sample Chamber Details
The sample chamber is designed for easy access and maintenance.
The chamber lid is lifted to gain access to the sample chamber. Set it on
top of the AV38 during chamber maintenance. When replacing the lid, it
should be aligned using the exterior alignment markers on the front edge of
the chamber and the lid.
*DataStick is a registered trademark of Thermo Fisher Scientific Inc. and
its subsidiaries.
14
Exterior marker to
align lid with sample
chamber
Sample Chamber Lid with
integral lamp assembly
Alignment hole
The alignment peg
on the Sample Chamber
must line up with the
alignment hole in
the lid.
Alignment peg
Chamber Lid with Lamp
Chamber Body
Sample Chamber
with bubble trap
Sample Chamber
with Lid in Place
Keep aperture dry
Sample Chamber
Bubble Trap
DataStick *with
Optical Sensor
Head can be
removed and
replaced.
TM
Lamp Assembly
The lamp assembly
screws into the lid.
The cable is routed
to the user terminal
box.
Lamp with Cable
Chamber Lid

4. MEASURE SCREEN OVERVIEW
The AV38 user interface is
shown in Figure 3.1. It
consists of an LCD module
that contains two lines of 16
alphanumeric characters and
seven keys to navigate the
menu. The contrast of the
LCD module can be adjusted
by simultaneously pressing
the escape and up-arrow keys
(for more contrast) or the escape and down-arrow keys (for less contrast).
When the DataStick and
communications adapter are
connected to the AV38
display but the optical sensor
head is absent, the measure
screen indicates the fault as
shown in Figure 3.2.
When the DataStick or
communications adapter are
not connected to the AV38
display, the measure screen
indicates the fault as shown
in Figure 3.2.
15
0.035 NTU AB
30.8 °C DS1: 6
MENU ESC ENTER
Figure 3.1: The elements of the measure screen
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Figure 3.2: The measure screen when the Sensor
Head is absent.
Sensor Head
Absent
MENU ESC ENTER
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Figure 3.3: The measure screen when the
DataStick is absent.
DataStick
Absent
MENU ESC ENTER
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5. MENU STRUCTURE
Pressing the menu key while a measure screen is displayed accesses the
main menu. The items in the main menu are the same regardless of the
type of sensor head that is installed in the DataStick. Table 4.1 shows all
accessible functions including optional features.
Note: Not all optional features are currently available on 2020 ClearTrace
System.
Main Menu Option Function
Calibrate
(Station Number)
Sensor calibration choices are automatically available for
installed sensor head.
Enter the MENU from the measure display of interest –
station in lower right.
Configure
(Station Number)
Configuration choices are automatically available for the
installed sensor head.
Enter the MENU from the measure display of interest –
station in lower right.
DataStick Comms Not currently available
Chlorine Configure Not currently available
Hold Outputs Holds the 4-20 mA and Relay outputs
Analog Output 1 Set 4 mA and 20 mA values. Calibrate and test the current
output with a meter.
Analog Output 2 (option) Not currently available
PID Controller Not currently available
Relay A (option) Not currently available
Relay B (option) Not currently available
Help Indicates AV38 software version
Reset AV38 Resets AV38 configuration to default current output, relay
and PID settings.
Exit Returns to the measure screen
The main menu is navigated using the up/down arrows to display a desired
function. The (=) symbol is used to indicate main menu choices.
To select a menu choice, press the ENTER key when the desired choice is
displayed.
To return to the measure screen, press the ESC key.
Whenever there is a value to be entered or a choice to be made, the second
line of the display will be surrounded by parentheses (( )). The name of
the value being entered or choice being made will appear on the upper line
of the screen and be appended with a question mark (?) to indicate that the
user is to provide input. Figure 4.1 shows the list of standard menu choices
and optional menu choices in the context of the AV38 display
presentation.
16

To illustrate navigation through the main menu the following sequence of
down arrow key presses is shown. The up arrow can always be used to scroll
up through the list.
A pressed key is identified by a gray background, e.g.,.
From the measure screen,
press MENU to display the
list of options. Generally,
Calibration will be the first
option. To select a
calibration function, press
ENTER. Press the down
arrow to scroll through the
list. Press ESC to return to
the measure screen.
Pressing the down arrow from
Calibration will display
Configure. To select
Configure functions, press
ENTER To continue scrolling
the list, press the down arrow.
Press ESC to return to the
measure screen.
Pressing the down arrow from
Configure will display
DataStick Comms. To select
DataStick Comms functions,
press ENTER. To continue
scrolling the list, press the
down arrow. Press ESC to
return to the measure screen.
Note: The DataStick Comms
option is not available on
2020 ClearTrace System.
17
Main Menu
Calibrate
MENU ESC ENTER
Configure
DataStick Comms
Analog Output 1
Analog Output 2
Relay A
Relay B
Help
Reset AV38
Exit
Main Menu
Optional Features
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Main Menu
Calibrate
MENU ESC ENTER
Configure
DataStick Comms
Analog Output
Help
Reset AV38
Exit
Main Menu
Standard
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Main Menu
Calibrate
MENU ESC ENTER
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Main Menu
Configure
MENU ESC ENTER
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Main Menu
DataStick Comms
MENU ESC ENTER
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ESC
Figure 4.1: The main menu (standard and optional feature lists)

Pressing the down arrow from
DataStick Comms will display
Analog Output. To select
analog output functions, press
ENTER To continue scrolling
the list, press the down arrow.
Press ESC to return to the
measure screen.
Pressing the down arrow from
Analog Output will display
Help. To select Help
functions, press ENTER To
continue scrolling the list,
press the down arrow. Press
ESC to return to the measure
screen.
Pressing the down arrow from
Help will display Reset AV38.
To select Reset functions,
press ENTER To continue
scrolling the list, press the
down arrow. Press ESC to
return to the measure screen.
To return to the measure
screen press ENTER when in
the EXIT screen. Pressing
ESC from any screen will take
the user up one level. In this
example ESC will also take
the user to the measure
screen. Since this screen is at
the bottom of the main menu
list, the down arrow will not
work here. The up arrow can
be used to go back through
the list.
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Main Menu
Help
MENU ESC ENTER
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Main Menu
Exit
MENU ESC ENTER
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t
Main Menu
Reset AV38
MENU ESC ENTER
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Main Menu
Analog Output
MENU ESC ENTER
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6. CALIBRATION
NOTE: The unit should be on for 30
minutes to allow the lamp to warm up
before begining calibrations or taking
measurements.
6.1. Span Calibration
To calibrate the span for the Turbidity
System:
1. Drain the sample chamber.
2. Shut off flow to the sample chamber.
3. Remove the chamber lid and place it
on top of the AV38.
4. Rinse the chamber with clean water and then with a small amount of
calibration solution. (See calibration kit instructions Code-5-0114 or
code 5-0015 for procedure.)
5. Shut off the Drain.
6. Fill the sample chamber with AMCO Clear Turbidity Standard, 20
NTU calibration solution. The standard should overflow the
OUTLET weir located about ¾ of the way to the top of the sample
chamber. As an alternative a formazin 20 NTU calibration standard
may be prepared from a stock solution of 4000 NTU formazin and
used within 24 hours. Refrigerate when stored.
7. After filling the sample chamber with the standard, wait for the
reading to settle (less than a minute depending on the filter setting).
8. Perform a 1-point
sample calibration as
shown in the following
menu tree.
The complete calibrate menu
for the turbidity and
suspended solids is shown.
19
Drain Chamber, Shut off Inlet
Drain and Inlet are shut off:
Ready to calibrate
Sample Chamber
with Lid Removed
Be careful to pour standard directly
into the SAMPLE CHAMBER.
Do not pour standard into the
Bubble trap.
During this operation, water will
remain int he BUBBLE TRAP and
it is not necessary to remove it.
Sample Chamber
Bubble Trap
Calibrate
1-Point Sample
MENU ESC ENTER
Zero
Temperature
Exit
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Figure 5.15: The complete calibrate menu for turbidity