Anderson-Negele ITM-4 Manual

Instruction Manual

Instrument Model Number

Instrument Serial Number

Anderson Instrument Co. Inc.
156 Auriesville Road
Fultonville, NY 12072
1-800-833-0081
Fax [phone]

"ITM-4" 4-Beam Turbidity Meter

30004 / 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 meter 6

2.2 - Mounting Position 7

Section 3 - Installation 7

3.1 - Mounting in the line 7

3.2 - Rotating the display 8

3.3 - Electrical 8

3.3.1 - Cabling and Connections 8

3.3.2 - Power and Wiring 9

Section 4 - Commissioning 9

Section 5 - Operation 9

Section 6 - Parameterization 10

Section 7 - Troubleshooting 12

Section 8 - Maintenance and Cleaning 13

Service 9 - Service and Calibration 13

9.1 - Service 13

9.2 - Calibration 13

Section 10 - Spare Parts 13

Section 11 - Product Matrix 14

Warranty and Return Statement 15

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Section 1 - General

1.1 - Description

The ITM-4 turbidity meter has been specically designed for placement in Dairy, Food and Beverage applications
where accurate turbidity measurement is required. The ITM uses a two light/two receiver system that measures the
affect that particle presence in a liquid has on the 90 degree reection and absorption of light across the measure-

ment tube. The meter takes these measurements and calculates the result in NTU (Nephelometric Turbidity Units)

or EBC (European Brewing Conference) units. The calculated value is then displayed on the meter 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-4 is 3-A authorized with all wetted parts constructed of 316L
stainless steel, Peek, sapphire glass and EPDM elastomers. 3 Push buttons 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: SS 1.4305 (303 Stainless) 89 mm dia.

Fitting: SS 1.4404 (316L)

Optical Block: PEEK

Lens: Sapphire

Temperature Ranges

Ambient: -10-60 °C (14-140°F)
Process: 0-100 °C (32-212°F)

CIP/SIP-Cleaning: up to 130 °C (266°F) 30 psi max
Operating Pressure: 85 psi maximum
Measurement Principle: acc. to EN 7027 4-beam-altern. light Wave Length: acc. to EN 7027 860 nm ± 60 nm
LCD-Indicator with Illumination: 2 x 8-digit

Accuracy: see table below

Accuracy at the calibration points

Offset drift < ± 0.3NTU

Slope accuracy Range

Reproducibility Range

Resolution Range

(20; 200; 2000 NTU)

0-1000 NTU

Range

1001-2000 NTU

Range

2001-5000 NTU

0-1000 NTU

Range

1001-2000 NTU

Range

2001-5000 NTU

0-100 NTU

Range

100-1000 NTU

Range

1001-5000 NTU

± 2%

(0-250 EBC)
(250-500 EBC)
(500-1250 EBC)

(0-250 EBC)
(250-500 EBC)
(500-1250 EBC)

(0-25 EBC)
(25-250 EBC)
(250-1250 EBC)

(± 0.075EBC)

< 3 %
< 4 %
< 6 %

< 2 %
< 3 %
< 4 %

0.1 NTU (0.025 EBC)
1 NTU (0.25 EBC)
10 NTU (2.5 EBC)

Electrical Connection: Cable Entry: 2 x PG (M16 x 1.5)

Cable Connection: 2 x M12 plug-in(SS 316), (1) 4 pin, (1) 5 pin
Supply Voltage: 24 ( 18-36 V DC) 160 mA maximum
Input Range Switching: E1 and E2 24 (18-36 V DC) DC decoupled Output
Analog: 4-20 mA active
Short Circuit Proof: DC decoupled
Switching: 24 80 mA maximum respectively to GND of power supply
Measurement Ranges NTU: 0-5; 10; 20; 50; 100; 200; 500; 1000; 2000;4000; 5000 EBC: 0-1; 2; 5; 10; 20;

50;100; 200; 500; 1000;1250

Damping Time: 0; 1; 2; 4; 8; 16; 32; 64; 128 seconds (adjustable)
Environmental Protection: Design and 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)
Certied to CSA Std C22.2 61010-1 3rd Ed (with Display option B only)

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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 qualied 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 meter have
to be qualied accordingly.

2. This instruction manual has to be strictly observed. The user of the meter 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 meter
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 relling.

7. Never remove or put out of action any safety devices through modication of the meter.

8. Do not touch any part of the meter 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 meter should have sufcient 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 meter, 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!

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1.4 - Intended Use

The ITM-4 turbidity meter 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 meter is the measurement of liquid turbidity in the food processing,
beverage, pharmaceutical and chemical industries. This meter is not suitable for the measurement of hazardous,
explosive, and combustible liquids of PED group.

Any modications to the measuring device that might have an inuence on the function and the safety devices of
the meter 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 meter

The meter has to be installed in the product line with power supplied for operation. When selecting the place
for the installation of the meter you should ensure that the housing can be opened for service work whenever
needed and that the meter 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 specied 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 specications.
Physical damage, incorrect output signal, or premature failure may result.

• Piping is securely mounted (e.g. to avoid vibration)

• Meter 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 meter 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

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. Under no circumstances should the meter be

installed in a line that imparts stresses on the meter.

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.

PAGE 8

3.2 - Rotating the display

In instances where the mounting location orients the display to an awkward position, it is possible to rotate the
display to improve the viewing by loosening the screws pictured below and rotating the electronics housing. It is
important to note that the display should be rotated by 90 degree increments to ensure the screws return fully
back into their retention holes when retightened.

3.3 - Electrical

3.3.1 - Cabling and Connections

Anderson recommends the use of molded ve wire molded cord sets to provide the best protection is wet
environments. Wire should be 18-24 AWG, 5 conductor cable to power the ITM-4 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.

3.3.2 - 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 160mA current for proper operation. The diagram below illustrates the
pin assignments for the M12 connectors used on the ITM

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 5 conductors. On this connec­tor the switching output is available for use to control a low voltage light or input to a PLC (80 mA max.) If the
output current is higher than the specied current (80 mA) an electronic fuse switches off the output. To reset

the switch output, disconnect the output (or deactivate and activate the turbidity meter).

There are also two inputs to select from multiple pre-programmed range choices. The turbidity meter is delivered
with measurement range 1 (0...1000 NTU / 0-1000 EBC = 4...20 mA). Other ranges can be selected by applying

to the inputs identied below.

24

PAGE 9

Range 2 (E1=24
and E2=24
pin 7, 8 and 9. Please take note of the connection plan and the table below. · If these inputs are not connected,
measurement range 1 always will be active!

*0 = 0 V DC / 1 = 24 (18-36 V DC ) The digital inputs E1 and E2 are DC decoupled to the power supply.
Reference ground: pin 9

(18-36 V DC), range 3 (E2=24 (18-36 V DC ) and range 4 (E1=24 (18-36 V DC)

(18-36 V DC ) can be chosen by means of the rated signal 24 (18-36 V DC ) at the inputs on

Section 4 - Commissioning

Following mounting and electrical connections the device can now be turned on for use. With an empty
measurement tube the signal will indicate a value around 1200NTU. This reading is not a concern as the optics
have been design for the measurement of liquids not gasses. Once lled with clear liquid such as distilled water
the measured value should be around 5 NTU depending on the purity of the water used. The ITM-4 is factory
calibrated and ready to use once installed. If a check of performance is desired it is recommended that Hach

brand Stablcal solutions be used at the desired turbidity points.

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.

PAGE 10

Section 6 - Parameterization

If the factory settings do not meet the requirements of a specic application it may be necessary to alter the
meters 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.

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.

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PAGE 12

Starting at the top of the programming menu in red is the starting point for a meter that has been turned on. Using
either the up or down keys one can scroll to the following parameters starting from the bottom of the menu and
working up:

OFFS-Offset value used to adjust the meters reading based on a measurement to a known liquid such as a

calibration standard

DAMP-Dampening value in seconds of time that slows the response of the meter. This is used in operations that
have higher variability in the measurement that needs to be averaged into a more stable output.

POLARITY- Change the status of the switch output between active when high or active when low.

HY/NTU-Hysteresis for the switch output, sets the span in NTU between the switch on point and the switch off

point.

SP/NTU- Set point for the Switched output in NTU

X4-20mA-Range selection parameter for the 4-20mA output where X is between 1 and 4

UNIT- Selection of the measuring units between NTU and EBC

Section 7 - Troubleshooting

Symptom Diagnosis Action

Display does not light up -Unit is miss wired

-No power to meter

Display lights no analog output Analog output has failed Return to factory for service

Switched output does not operate -Setpoint 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 ^^^^^^^

Reading on display and output are
higher when owing than when ow

is stopped

Caution: Attempting to disconnect or change wiring to this sensor during process operation can cause loss
of signal to the control system!

Range selection is too low Recongure range for a higher

Turbidity greater than 5000NTU Contact factory

Air/gasses are being introduced into

the process liquid

-Correct wiring

-Correct power issue

-Adjust setpoint to correct

value

-Correct electrical problem and
power cycle meter

value

Find and correct source for air/
gasentrainment

PAGE 13

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.

Service 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
cleanability 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

Caution: Improper calibration can cause incorrect output signal.
Although a full calibration of the ITM requires the device to be returned to the factory, if during regular accuracy checks a point
is discovered to be slightly off it can be corrected using the OFFS parameter. This parameter will directly change the reading
of the ITM by the value that is entered. When doing so make sure that the integrity of your reference solutions are sufcient to

determine an error.

Section 10 - Spare Parts

There are two replaceable o-rings used on the ITM and are listed below. For the process ange one size is used for all units.

Description Part Number quantity required

Window cap o-ring 36241N0017807900 1
5mm Flange o-ring 45669A0065 2

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

Section 11 - Product Matrix

PIPE DIAMETER

15 1.5"
20 2.0"
25 2.5"
30 3.0"

ITM-4

DISPLAY

D Display
B Blind Cap

TC

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 specications 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 specications 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 ofce 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 deciency. 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 [phone]

ANDERSON INSTRUMENT CO. LP • 400 BRITANNIA RD. EAST, UNIT 1 • MISSISSAUGA, ONTARIO L4Z 1X9 • CANADA • 905-603-4358 • FAX [phone]

NEGELE MESSTECHNIK GmbH (A Division of Anderson) • RAIFFEISENWEG 7 • D-87743 EGG A. D. GÜNZ • GERMANY • +49 (0) 8333/9204-0 • FAX [phone]

www.anderson-negele.com