Instruction Manual
Instrument Model Number
Instrument Serial Number
Anderson Instrument Co. Inc.
156 Auriesville Road
Fultonville, NY 12072
1-800-833-0081
Fax 518-922-8997
"ITM-3" Relative Turbidity Monitor
30005 / 1.0 / 2015-03-12 / BK / NA
PAGE 3
Table of Contents
Section 1 - General 4
1.1 - Description 4
1.2 - Specifications 4
1.3 - General Safety 5
1.4 - Intended use 6
Section 2 - Application Requirements 6
2.1 - Conditions required for the monitor 6
2.2 - Mounting Position 7
2.3 - Mounting in a pipe 7
Section 3 - Installation 8
3.1 - Mounting in the line 8
3.2 - Electrical 8
3.2.1 - Cabling and Connections 8
3.2.2 - Power and Wiring 8
Section 4 - Commissioning 10
Section 5 - Operation 10
Section 6 - Parameterization 11
Section 7 - Troubleshooting 13
Section 8 - Maintenance and Cleaning 13
Section 9 - Service and Calibration 14
9.1 - Service 14
9.2 - Calibration 14
Section 10 - Spare Parts 14
Section 11 - Product Matrix 14
Warranty and Return Statement 15
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Section 1 - General
1.1 - Description
The ITM-3 turbidity monitor has been specically designed for placement in Dairy, Food and Beverage applications
where turbidity monitoring is required. The ITM uses a single light/ receiver system that measures the intensity of
reected light from particles present in a liquid. The monitor takes this measurement and calculates the result in
% of sensor capacity. The calculated value is then displayed on the monitor along with the creation of an analog
output representing the measurement based on an internally selected range. In addition to the display and analog
output, the ITM also offers a switched output that can be used to take action on a user assigned set point. The
resulting signals may be interfaced with Anderson Digital Indicators, Anderson recording devices or Customer
supplied instrumentation including programmable logic controllers. Multiple sizes are available to allow adapting
a variety of piping sizes. The ITM-3 is 3-A authorized with all wetted parts are constructed of 316L stainless steel,
sapphire glass and EPDM elastomers. Three keys allow for programming changes that can affect the analog and
switched output operation.
1.2 - Specifications
Process Connection: 1.5”, 2”, 2.5”, 3”
Materials Connection Head: 1.4305 (303 Stainless)
Fitting: 1.4404 (316L)
Lens: Sapphire
O-ring: 3-A compliant elastomer
Window Material: PMMA/Acrylic
Temperature Ranges
Ambient: -10-60 °C (14-140°F)
Process: 0-100 °C (32-212°F)
CIP/SIP-Cleaning: up to 140°C (284°F) for up to 30 minutes
Operating Pressure: 10bar (150 psi) maximum
Measurement Principle: Infrared backscatter. Meets EN7027 (wavelength = 860 nm +/- 20 nm)
Minimum Turbidity: 2000 NTU / 5% of 100% scale
Ranges: 0 to 10 / 20 / 50/ 100/ 200% (internally selectable) one remotely selectable
Repeatability: within +/- 1% of full scale
Response Time: adjustable 0, 1, 3, 6, 13 and 25 sec.
Display: backlit LCD, 2 x 8 digit
Electrical Connection: 2 x M12 plug-in (SS 316), (1) 4 pin, (1) 5 pin
Supply Voltage: 24 (18-36 VDC)@ 150 mA
Input Range Switching: E1=24 (18-36 VDC) DC decoupled Output
Analog: 4-20 mA active
Setpoint: adjustable 0-100%
Hysteresis: factory set at 5%, adjustable 0-100%
Measurement
Principle: Infrared backscatter. Meets EN7027 (wavelength = 860 nm +/- 20 nm)
Short Circuit Proof: DC decoupled
Switching: 24 80 mA maximum respectively to GND of power supply
Weight: approx. 1600g. (3.2lbs.)
Environmental Protection: Designed and factory tested to IP69K;intended for use in wet environments at
up to 100% relative humidity
Approvals: ETL Listed
Conforms to UL Std 61010-1 3rd Ed (with Display option B only)
Certied to CSA Std C22.2 61010-1 3rd Ed (with Display option B only)
PAGE 5
1.3 - General Safety
These safety instructions have to be strictly observed in order:
• To not endanger the safety of persons and environment
• To avoid any damages to the measuring instrument
• To prevent any faulty product as a result of use
The electric connection may only be carried out by qualied persons who have the necessary electrical knowledge and have
been authorized by the owner to do so.The wiring of the voltage supply and the inputs and outputs of the control circuits
has to be carried out professionally in consideration of current electrical design and regulation. Also refer to chapter 3
“Installation”/”Electrical” for more information.
In particular, the following references have to be observed:
• Safety instructions
• Electrical connection information
1. All persons who are involved in the installation, commissioning, operation, service, and maintenance of the monitor have to
be qualied accordingly.
2. This instruction manual has to be strictly observed. The user of the monitor has to assured that the personnel concerned
has read and fully understood the instruction manual.
3. All work done must be carried out by authorized and trained personnel only.
4. The instruction manual should be kept in close proximity to the device for reference to the operators.
5. Before starting any cleaning, conversion, service or maintenance work, the measuring device has to be switched off and
disconnected from the power. This requires a device for separating all live wires, e.g. a 2-pole main switch in the control
cabinet. The associated device has to be protected against unauthorized switching-on.
6. Before starting any service and maintenance work, the system has to be ushed with water and emptied. If the monitor has
to be removed from the pipe system, all pipelines will have to be emptied prior to removal and protected by a maintaining
an opening to atmosphere or a shut-off method to prevent relling.
7. Never remove or put out of action any safety devices through modication of the monitor.
8. Do not touch any part of the monitor while the measuring instrument is cleaned as there is a risk of getting burned!
9. To minimize the danger of injury, the working area around the monitor should have sufcient free space.
10. The technical data according to the instruction manual, nameplate needs to be considered against the requirements of the
application.
If damage is done to the monitor, all warranties are void.
Dangers not resulting from the functionality of the device, but from the ambient and operating conditions present at the place of
application, have to be referred to in appropriate instructions to the operators and by the use of danger signs. The user of the
device is exclusively responsible for the compliance with these instructions!
PAGE 6
1.4 - Intended use
The ITM-3 turbidity monitor is only to be used for the application that it has been designed, dimensioned and
built. The electrical connection must be made to a direct current network (see the nameplate).
The intended purpose of the turbidity monitor is the measurement of liquid turbidity in the food processing,
beverage, pharmaceutical and chemical industries. This monitor is not suitable for the measurement of
hazardous, explosive, and combustible liquids of PED group.
Any modications to the measuring device that might have an inuence on the function and the safety devices of
the monitor are only allowed to be carried out by authorized persons of Anderson Instrument Company. Possible
misuse including any use in contradiction to the above-mentioned application is an indication of misuse of the
measuring instrument!
In such a case Anderson does not assume any responsibility for safety.
Section 2 - Application Requirements
2.1 - Conditions required for the monitor
The monitor has to be installed in the product line with power supplied for operation. When selecting the place
for the installation of the monitor you should ensure that the housing can be opened for service work whenever
needed and that the monitor can be simply removed, if necessary. In order to protect the electronics from damage, select an installation location so that:
Warning! Do not subject this sensor to pressure that exceeds the specied upper range limit. Over-pressure
may cause premature failure, incorrect output signal, or possible human injury.
• Product temperature is always kept within the admissible temperature
Caution: Do not expose the sensor to process or ambient temperatures that exceed the rated specications.
Physical damage, incorrect output signal, or premature failure may result.
• Piping is securely mounted (e.g. to avoid vibration)
• Monitor can be emptied if there is a risk of freezing
• Connection housing is not permanently exposed to dripping water
2.2 - Mounting Position
Ensure that the mounting position of the turbidity monitor guarantees that the measurement tube is always full
with media. Air or air bubbles are measured like turbidity.
Correct installation:
• In or in front of ascending pipes
Wrong installation:
• In or in front of descending pipes
• Into the highest point of a pipe. Air or air bubbles will concentrate there. Refer to drawings below
for examples.
PAGE 7
Flow direction
Flow direction
2.3 - Mounting in a pipe
The ITM is designed to be installed in a short outlet tee in the orientations shown below. The distance from
the clamping face to the wall of the main pipe should measure at 5/8” (.625”)
– CAUTION–
Pipe
Flow
Vertical Pipe
Pipe
Flow
Horizontal Pipe
Pipe
DO NOT mount ITM-3A on top
or bottom of piping as resulting air
space or sediment collection
may cause erroneous readings
Standard Clamp and Gasket Required
Pay careful attention near the
sapphire sensor face. Do not
strike with hard or sharp object.
Clean with soft cloth and mild
Mount with connector downward
in all installations
Pipe
Horizontal Pipe
Pipe
(Not supplied)
PAGE 8
+24V POWER SUPPLY
(PIN 3)
+ OUTPUTTURBIDITY
(PIN 2)
- OUTPUT TURBIDITY
(PIN 1)
- POWER SUPPLY
(PIN 4)
0V
(PIN 3)
E1 RANGE SELECT
(PIN 2)
SWITCHING OUTPUT
(PIN 1)
M12 PLUG-IN LEFT
4-20mA OUTPUTS
CABLE TERMINATIONS
M12 PLUG-IN RIGHT
SWITCHING OUTPUT
RANGE CONTROL VOLTAGE
CABLE TERMINATIONS
Section 3 - Installation
3.1 - Mounting in the line
Caution: Handle with care during installation to avoid damage to the sensor. Physical damage, especially to the
sensing surface can cause incorrect output signal or premature failure.
The ITM is designed to be installed in a supported pipeline.
Caution: For proper mounting of this sensor, verify that the tting connection type, size, gasket or seal, and
holding ring or clamp match the process connection it is being mounted to. Improper mounting can cause process
leakage, reduced pressure ratings, and/or contamination issues.
3.2 - Electrical
3.2.1 - Cabling and Connections
Anderson recommends the use molded ve wire molded cord sets to provide the best protection is wet
environments. Wire should be 18-24 AWG, 4 conductor cable to power the ITM-3 and provide a return for the
analog output signal. In addition, it should be foil shielded with a continuous drain wire. The ITM is provided with
M12 quick disconnect electrical connectors that will prevent moisture from entering the electronics housing. The
drain (ground) wire should be attached to ground at only the receiving device end.
WARNING: To prevent signal interference, do not run signal cable closer than 12” to AC wiring.
3.2.2 - Power and Wiring
Warning! This unit accepts DC voltage only, connection to AC voltage can cause failure of the sensor
and/or risk of electrocution
The ITM requires 24 (18-36 VDC) at 150A current for proper operation. The diagram below illustrates the pin
assignments for the M12 connectors used on the ITM.
M12 PLUG-IN LEFT
4-20mA OUTPUTS
CABLE TERMINATIONS
NOTE: For 3 wire connection - Power Supply(pin 4)
should be tied to - Output(pin 1)
M12 PLUG-IN RIGHT
0V
(PIN 3)
E1 RANGE SELECT
(PIN 2)
SWITCHING OUTPUT
(PIN 1)
M12 PLUG-IN RIGHT
SWITCHING OUTPUT
RANGE CONTROL VOLTAGE
CABLE TERMINATIONS
SWITCHING OUTPUT
RANGE CONTROL VOLTAGE
CABLE TERMINATIONS
The left connector offers the connection for input power and the analog output. If more features are to be
utilized connection to the right connector will need to be done using a second cable with 4 conductors. On this
connector the switching output is available for use to control a low voltage light or input to a PLC (0.08 A max.)
If the output current is higher than the specied current (80 mA) an electronic fuse switches off the output. To
reset the switch output, disconnect the output (or deactivate and activate the turbidity monitor).
There is also an input to select a second pre-programmed range choice. The turbidity monitor is delivered with
measurement range 1 (0...100 % = 4...20 mA). Other ranges can be selected by applying 24V DC to the inputs
identied below.
PAGE 9
Range 2 (E1=24 (18...36 V DC) can be chosen by means of inputting the rated signal +24 (18...36 V
DC) at the input on pin 2. Please take note of the table below. · If this input is not connected, measurement
range 1 always will be active!
E1* Measurement Range
0
1
1 (factory setting: 0-100 %)
2 (factory setting: 0-10 %)
*0 = 0 V DC / 1 = 24 V DC
*0 = 0 V DC / 1 =24 (18...36 V DC) The digital inputs E1 are DC decoupled to the power supply.
Reference ground: pin39
PAGE 10
0 10 20 30 40 50 60 70 80 90 100
Section 4 - Commissioning
Following mounting and electrical connections the device can now be turned on for use. With an empty measurement pipe the signal will not be expected to read “0”. This reading is not a concern as the optics have been
designed for the measurement of liquids not gasses. Once lled with clear liquid such as distilled water the
measured value should be .4 - .7% depending on the purity of the water used. The ITM-3 is factory calibrated and
ready to use once installed. If a check of performance is desired it is recommended a check with distilled water be
performed.
Section 5 - Operation
Once commissioned there is no further need to interact with the ITM other than reading the display to view the
turbidity measurement as the measurement is continuous and automatic. The response of the ITM to various
liquids is dependent on the particle content of the liquid. Below is a graph demonstrating the measurement of the
ITM when used with food products and the impact of diluting with water has on the measurement.
Showcase Diagram of different Media
110
100
90
80
70
60
50
40
Turbidity in %
30
20
10
0
Product Concentration in %
* Average turbidity of customary milk products at different dilutions.
Cream (40 % fat)*
Cream (32 % fat)*
Sour Cream (10 % fat)*
Full Cream Milk
(3.5 % fat)*
UHT-Milk (1.5 % fat)*
Whey*
Tomato Juice
Orange Juice
PAGE 11
power
supply
Receiver
Section 6 - Parameterization
If the factory settings do not meet the requirements of a specic application it may be necessary to alter the monitors operation
through parameter change. This is done using the display and the three keys on either side of the terminal strip pictured below.
To access these it will be necessary to open the enclosure by unscrewing the windowed cap.
Caution: Do not open the sensor enclosure in wet or spray-down environments. Moisture ingression can cause premature
electronics failure.
4...20 mA
Analog IN
Through the use of the “enter” and “selection” keys navigation of the programming routine below can be accomplished.
Caution: Improper changes to programmed parameters following installation and commissioning can result in incorrect
output signal.
Switch
Input
Digital OUT
For range
selection
PAGE 12
PAGE 13
Start at the bottom of the programming menu for a monitor that has been turned on. Using either the up or down keys one can
scroll to the following parameters starting from the top of the menu and working down:
DUMP-Dampening value in seconds of time that slows the response of the monitor. This is used in operations that have higher
variability in the measurement that needs to be averaged into a more stable output.
HY-Hysteresis for the switch output , sets the span in % between the switch on point and the switch off point.
Threshold- Set point for the switched output in %
X4-20mA-Range selection parameter for the 4-20mA output where X is between 1 and 2
Section 7 - Troubleshooting
Symptom Diagnosis Action
Display does not light up -Unit is miss wired
-No power to monitor
Display lights no analog output Analog output has failed Return to factory for service
Switched output does not operate -Set point is incorrectly set
-Output has been damaged by over
current
mA output stays at >21mA but
display indicates measurement
mA output stays at >21mA and
display indicates greater than 200%
Reading on display and output are
higher when owing than when ow
is stopped
Range selection is too low Recongure range for a higher
Issue with measuring electronics Contact factory
Air/gasses are being introduced into
the process liquid
-Correct wiring
-Correct power issue
-Adjust set point to correct value
-Correct electrical problem and
power cycle monitor
value
Find and correct source for air/gas
entrainment
Caution: Attempting to disconnect or change wiring to this sensor during process operation can cause loss of signal to
the control system!
Section 8 - Maintenance and Cleaning
The ITM requires no regular maintenance other than the periodic changing of process connection gaskets. This should be
done annually or at the same intervals as your plant gasket maintenance. The product contact and exterior of the ITM is
designed to be cleaned under the same conditions as required in food and pharma processing facilities including CIP cleaning
methods. High pressure hoses, abrasive brushes or pads and harsh detergents should not be used to clean the ITMs product
contact and external surfaces.
Section 9 - Service and Calibration
9.1 - Service
Warning! Do not remove this sensor from the process while it is operating. Removal while the process is
operating can contaminate the process and could cause human injury.
Caution: Improper replacement of components during service can result in process leakage, reduced pressure
rating, system clean ability issues, incorrect output signal, or error code(s).
There are no serviceable electronic or optical components in the ITM. All required repairs require returning the
device to the factory.
9.2 - Calibration
Although a full calibration of the ITM requires the device to be returned to the factory it is possible to check the
ITMs performance against known liquids. When new, it is good practice to document the ITMs measurement of
common products used with the device. This information can be used as a reference to check the ITM at future
date. If a discrepancy is found, contact the factory for help to resolve.
Section 10 - Spare Parts
Shielded cordset w/25’ cable 42117H0025
Shielded cordset w/50’ cable 42117H0050
Shielded cordset w/100’ cable 42117H0100
Field Wireable Connector-Straight 42119B0000
Field Wireable Connector-90° 42119A0000
Window cap o-ring 36241N0017807900 Qty Required 1
Section 11 - Product Matrix
I T 3M -
STYLE
A Standard
L Long
FITTING
004 1.5” Tri-Clamp®
005 2” Tri-Clamp®
006 2.5” Tri-Clamp®*
007 3” Tri-Clamp®*
DISPLAY
D Display
B Blind Cap
PAGE 15
Warranty and Return Statement
These products are sold by The Anderson Instrument Company (Anderson) under the warranties set forth in the following paragraphs. Such warranties are extended only with respect
to a purchase of these products, as new merchandise, directly from Anderson or from an Anderson distributor, representative or reseller, and are extended only to the rst buyer thereof
who purchases them other than for the purpose of resale.
Warranty
These products are warranted to be free from functional defects in materials and workmanship at the time the products leave the Anderson factory and to conform at that time to the
specications set forth in the relevant Anderson instruction manual or manuals, sheet or
sheets, for such products for a period of one year.
THERE ARE NO EXPRESSED OR IMPLIED WARRANTIES WHICH EXTEND BEYOND
THE WARRANTIES HEREIN AND ABOVE SET FORTH. ANDERSON MAKES NO WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE WITH
RESPECT TO THE PRODUCTS.
Limitations
Anderson shall not be liable for any incidental damages, consequential damages, special
damages, or any other damages, costs or expenses excepting only the cost or expense of
repair or replacement as described above.
Products must be installed and maintained in accordance with Anderson instructions. Users
are responsible for the suitability of the products to their application. There is no warranty
against damage resulting from corrosion, misapplication, improper specications or other
operating condition beyond our control. Claims against carriers for damage in transit must be
led by the buyer.
This warranty is void if the purchaser uses non-factory approved replacement parts and supplies or if the purchaser attempts to repair the product themselves or through a third party
without Anderson authorization.
Returns
Anderson’s sole and exclusive obligation and buyer’s sole and exclusive remedy under the
above warranty is limited to repairing or replacing (at Anderson’s option), free of charge, the
products which are reported in writing to Anderson at its main ofce indicated below.
Anderson is to be advised of return requests during normal business hours and such returns
are to include a statement of the observed deciency. The buyer shall pre-pay shipping
charges for products returned and Anderson or its representative shall pay for the return of
the products to the buyer.
Approved returns should be sent to: ANDERSON INSTRUMENT COMPANY INC.
156 AURIESVILLE ROAD
FULTONVILLE, NY 12072 USA
ATT: REPAIR DEPARTMENT
ANDERSON INSTRUMENT CO., INC • 156 AURIESVILLE RD. • FULTONVILLE, NY 12072 • USA • 800-833-0081 • FAX 518-922-8997
ANDERSON INSTRUMENT CO. LP • 400 BRITANNIA RD. EAST, UNIT 1 • MISSISSAUGA, ONTARIO L4Z 1X9 • CANADA • 905-603-4358 • FAX 905-568-1652
NEGELE MESSTECHNIK GmbH (A Division of Anderson) • RAIFFEISENWEG 7 • D-87743 EGG A. D. GÜNZ • GERMANY • +49 (0) 8333/9204-0 • FAX +49 (0) 8333/9204-49
www.anderson-negele.com
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