YOKOGAWA EXA TB TB400G User manual

User’s
Manual Model TB400G
Surface Scattering Light Turbidity Meter
[Style: S3]
IM 12E04A02-02E
IM 12E04A02-02E
9th Edition

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IM 12E04A02-02E 9th Edition : Mar. 16, 2018-00
INTRODUCTION
nStructure of this Manual
This manual describes the specications, installation, operation, maintenance, and
troubleshooting for the TB400G Surface Scattering Light Turbidity Meter. To use this instrument
correctly, read this manual thoroughly.
n SpecicationCheck
When the instrument arrives, unpack the package with care and check that the instrument has
not been damaged during transportation. Please check that the product received meet the
specied specications by conrming the model code indicated on the nameplate. For details of
the model code, refer to Section 2.3.
nBefore Measurement
The TB400G turbidimeter is preset with defaults prior factory shipment. Before measurement,
verify that these factory default settings meet the operating conditions and if necessary,
recongure parameters. For checking the default settings and recording changed parameters,
use an Operation Parameter Setting List at the end of this manual.
nSignal Words
Throughout this user’s manual, you will nd several different types of symbols are used to identify
different sections of text. This section describes these icons.
CAUTION
This symbol gives information essential for understanding the operations and functions.
NOTE
This symbol indicates information that complements the present topic.
nSymbol of unit “liter”
In this manual, the unit “liter” is described using the symbol of “L”, not “ l ”. On the real Turbidity
Meter, the unit “liter” of the display unit is described as “ l ”. So, the real display unit of turbidity is
“mg/l”, not “mg/L”.
n TrademarkNotices
• All company and product names mentioned in this user’s manual are trademarks or
registered trademarks of their respective companies.
• We do not use TM or ® mark to indicate those trademarks or registered trademarks in this
user’s manual.
Media No. IM 12E04A02-02E 9th Edition : Mar. 2018 (YK)
All Rights Reserved Copyright © 2006, Yokogawa Electric Corporation

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IM 12E04A02-02E 9th Edition : Mar. 16, 2018-00
SAFETY PRECAUTIONS
n Safety,Protection,andModicationoftheProduct
• In order to protect the system controlled by the product and the product itself and ensure
safe operation, observe the safety precautions described in this user’s manual. We assume
no liability for safety if users fail to observe these instructions when operating the product.
• If this instrument is used in a manner not specied in this user’s manual, the protection
provided by this instrument may be impaired.
• If any protection or safety circuit is required for the system controlled by the product or for
the product itself, prepare it separately.
• Be sure to use the spare parts approved by Yokogawa Electric Corporation (hereafter
simply referred to as YOKOGAWA) when replacing parts or consumables.
• Modication of the product is strictly prohibited.
• The following symbols are used in the product and user’s manual to indicate that there are
precautions for safety:
nNotes on Handling User’s Manuals
• Please hand over the user’s manuals to your end users so that they can keep the user’s
manuals on hand for convenient reference.
• Please read the information thoroughly before using the product.
• The purpose of these user’s manuals is not to warrant that the product is well suited to any
particular purpose but rather to describe the functional details of the product.
• No part of the user’s manuals may be transferred or reproduced without prior written
consent from YOKOGAWA.
• YOKOGAWA reserves the right to make improvements in the user’s manuals and product at
any time, without notice or obligation.
• If you have any questions, or you nd mistakes or omissions in the user’s manuals, please
contact our sales representative or your local distributor.
nWarning and Disclaimer
The product is provided on an “as is” basis. YOKOGAWA shall have neither liability nor
responsibility to any person or entity with respect to any direct or indirect loss or damage arising
from using the product or any defect of the product that YOKOGAWA can not predict in advance.

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IM 12E04A02-02E 9th Edition : Mar. 16, 2018-00
Model TB400G
Surface Scattering Light Turbidity Meter
[Style: S3]
CONTENTS
IM 12E04A02-02E 9th Edition
INTRODUCTION .......................................................................................................i
SAFETY PRECAUTIONS ........................................................................................ii
1. OVERVIEW ................................................................................................ 1-1
1.1 SystemConguration ...................................................................................... 1-2
1.1.1 TB400G-¨-¨-NN, -KC (without sampling system)........................ 1-2
1.1.2 TB400G-¨-¨-A1 (with sampling system, without automatic
cleaning or automatic zero calibration).............................................. 1-2
1.1.3 TB400G-¨-¨-A2 (with automatic cleaning and without
automatic zero calibration)................................................................. 1-2
1.1.4 TB400G-¨-¨-A3 (with automatic cleaning and zero calibration) .. 1-3
1.2 Operating Principle........................................................................................... 1-3
2. SPECIFICATIONS ..................................................................................... 2-1
2.1 StandardSpecications................................................................................... 2-1
2.2 Characteristics .................................................................................................. 2-4
2.3 ModelandSufxCodes ................................................................................... 2-5
2.4 Accessories....................................................................................................... 2-5
2.5 ExternalDimensions ........................................................................................ 2-6
2.5.1 TB400G-¨-¨-NN, -KC ................................................................... 2-7
2.5.2 TB400G-¨-¨-A1 ............................................................................ 2-9
2.5.3 TB400G-¨-¨-A2 .......................................................................... 2-11
2.5.4 TB400G-¨-¨-A3 .......................................................................... 2-13
2.5.5 TB400G-¨-¨-A1/PHU5 ............................................................... 2-15
2.5.6 TB400G-¨-¨-A2/PHU5 ............................................................... 2-17
2.5.7 TB400G-¨-¨-A3/PHU5 ............................................................... 2-19
2.5.18 TB400G-¨-¨-A1/PHN5 ............................................................... 2-21
2.5.9 TB400G-¨-¨-A2/PHN5 ............................................................... 2-23
2.5.10 TB400G-¨-¨-A3/PHN5 ............................................................... 2-25
2.5.11 TB400G-¨-¨-A1/FC .................................................................... 2-27
2.5.12 TB400G-¨-¨-A2/FC .................................................................... 2-29
2.5.13 TB400G-¨-¨-A3/FC .................................................................... 2-31
2.6 Piping System Diagrams................................................................................ 2-33
2.6.1 TB400G-¨-¨-A1 .......................................................................... 2-33
2.6.2 TB400G-¨-¨-A2 .......................................................................... 2-33
2.6.3 TB400G-¨-¨-A3 .......................................................................... 2-34

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2.6.4 TB400G-¨-¨-A1/PHU5, /PHN5.................................................. 2-34
2.6.5 TB400G-¨-¨-A2/PHU5, /PHN5.................................................. 2-35
2.6.6 TB400G-¨-¨-A3/PHU5, /PHN5.................................................. 2-35
2.6.7 TB400G-¨-¨-A1/FC .................................................................... 2-36
2.6.8 TB400G-¨-¨-A2/FC .................................................................... 2-36
2.6.9 TB400G-¨-¨-A3/FC .................................................................... 2-37
2.7 Internal Wiring Diagram ................................................................................. 2-38
3. INSTALLATION, PIPING, AND WIRING................................................... 3-1
3.1 Installation ......................................................................................................... 3-1
3.1.1 Unpacking .......................................................................................... 3-1
3.1.2 Installation Location ........................................................................... 3-1
3.1.3 Installation .......................................................................................... 3-2
3.2 Piping ................................................................................................................. 3-3
3.2.1 TB400G-¨-¨-NN, -KC (without sampling system)........................ 3-3
3.2.2 TB400G-¨-¨-A1, -A2, and -A3 (with sampling system)................ 3-4
3.3 ExternalWiring.................................................................................................. 3-5
3.3.1 Power and Grounding Wiring............................................................. 3-7
3.3.2 Analog Output Wiring......................................................................... 3-7
3.3.3 Digital Output Wiring .......................................................................... 3-8
3.3.4 Contact Input and Contact Output (Range Output) Wiring................ 3-9
3.3.5 Contact Output Wiring...................................................................... 3-10
3.3.6 With Arrester (/ARS) ........................................................................ 3-11
4. OPERATION .............................................................................................. 4-1
4.1 Preparation for Operation ................................................................................ 4-1
4.1.1 Checking Piping and Wiring Conditions ............................................ 4-1
4.1.2 Supplying Power................................................................................ 4-1
4.1.3 Supplying Zero Water ........................................................................ 4-1
4.1.4 Adjustment for Leveling Detector....................................................... 4-2
4.1.5 Supplying Cleaning Water ................................................................. 4-2
4.1.6 Setting Output Range ........................................................................ 4-3
4.1.7 Running-in.......................................................................................... 4-3
4.1.8 Zero and Span Calibrations ............................................................... 4-3
4.1.9 Supplying Sample and Adjusting Flowrate ........................................ 4-4
4.2 Operation ........................................................................................................... 4-4
4.2.1 Starting Measurement ....................................................................... 4-4
4.2.2 Automatic Cleaning Operation........................................................... 4-5
4.2.3 Automatic Zero-calibration Operation................................................ 4-9
5. FUNCTIONS .............................................................................................. 5-1
5.1 Functions Related to Failure Detection.......................................................... 5-1
5.2 Functions Related to Analog Output .............................................................. 5-4
5.2.1 Output Range Selection..................................................................... 5-4

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5.2.2 Other Functions Related to Output.................................................... 5-5
5.3 Manual Cleaning and Calibration Functions ................................................. 5-6
5.4 Functions Related to Display .......................................................................... 5-8
5.5 Functions Related to Contact Output............................................................. 5-9
5.6 Other Functions ................................................................................................ 5-9
5.6.1 Overview of the Spike Detection Function......................................... 5-9
5.6.2 Settings of Spike Detection Function............................................... 5-10
6. PROCEDURES FOR CONVERTER OPERATION .................................. 6-1
6.1 Components of Control Panel and Their Functions and Actions ............... 6-1
6.2 Operation Modes and Functions..................................................................... 6-3
6.2.1 Functions in <MEAS.> Mode............................................................. 6-4
6.2.2 Functions in <MAINT.> Mode ............................................................ 6-5
6.2.3 Functions in <PROGRAM1> Mode ................................................... 6-6
6.2.4 Functions in <PROGRAM2> Mode ................................................... 6-7
6.3 Key Operation.................................................................................................... 6-8
6.3.1 Mode Switching.................................................................................. 6-8
6.3.2 Function Switching............................................................................. 6-8
6.3.3 Numerical Input.................................................................................. 6-8
6.3.4 Opening/Closing Valves..................................................................... 6-9
6.4 Operation in <Meas.> Mode ............................................................................. 6-9
6.5 Operation in <MAINT.> Mode......................................................................... 6-11
6.6 Operation in <PROGRAM1> Mode................................................................ 6-20
6.7 Operation in <PROGRAM2> Mode................................................................ 6-35
6.8 Valve Operation............................................................................................... 6-37
7. MAINTENANCE......................................................................................... 7-1
7.1 Inspection and Maintenance Intervals ........................................................... 7-1
7.2 Washing with Cleaning Water.......................................................................... 7-1
7.3 Cleaning of Measuring Cell.............................................................................. 7-2
7.4 CleaningofHeadTank...................................................................................... 7-3
7.5 Lamp Replacement........................................................................................... 7-4
7.6 Zero Calibration................................................................................................. 7-6
7.6.1 Zero Calibration with "Zero Water" .................................................... 7-6
7.6.2 Zero Calibration by Turning Off Light Source .................................... 7-7
7.7 Span Calibration ............................................................................................... 7-8
7.7.1 Span Calibration Using Calibration Plate .......................................... 7-8
7.7.2 Span Calibration Using Standard Solution ........................................ 7-9
7.8 Cleaning of Lenses ......................................................................................... 7-10
7.9 Replacement of Filter (for "zero water")....................................................... 7-11
7.10 Replacement of Fuses.................................................................................... 7-12
7.11 Cleaning of Piping........................................................................................... 7-13
7.12 CheckingFlowrate(WaterLevel) .................................................................. 7-14
7.13 Operation If Water Supply is Suspended ..................................................... 7-14

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7.14 Operation During Power Failure and at Power Recovery .......................... 7-15
7.15 Zero and Span Standards .............................................................................. 7-16
7.15.1 Zero Turbidity Standard ................................................................... 7-16
7.15.2 Span Standards ............................................................................... 7-16
7.16 Replacement of Silicone Tube....................................................................... 7-17
8. TROUBLESHOOTING .............................................................................. 8-1
8.1 Events in Which FAIL Lamp Is Lit ................................................................... 8-1
8.2 Events in Which FAIL Lamp Is Not Lit ............................................................ 8-5
9. SPARE PARTS .......................................................................................... 9-1
Customer Maintenance Parts List ........................................ CMPL 12E04A02-03E
Revision Information ...............................................................................................i

<1. OVERVIEW> 1-1
IM 12E04A02-02E 9th Edition : Mar. 16, 2018-00
1. OVERVIEW
The applications of turbidimeters, which have been used for operation or control of ltration
plants, are expanding into turbidity detection in chemical processes and in measurement of
suspended solid particulates in various types of industrial wastewater.
Model TB400G Surface Scattering Light Turbidity Meter is a process turbidimeter employing the
principle of measuring surface-scattered light. This instrument has the following features.
• High performance, high reliability
• Self-diagnostic functions (such as detection of a disconnected lamp, automatic converter
checking functions, and upper and lower limit alarms).
• Choice of functionality (such as automatic cleaning, range-free function, automatic zero
calibration, etc).
• Easy maintenance through small, light-weight, and accessible design.
• No window surfaces to become contaminated.
• Bubble rejection signal processing.
Figure1.1 ExternalViewoftheTB400GSurfaceScatteringLightTurbidityMeter(withautomatic
cleaning and automatic zero calibration)

<1. OVERVIEW> 1-2
IM 12E04A02-02E 9th Edition : Mar. 16, 2018-00
1.1 SystemConguration
The TB400G Surface Scattering Light Turbidity Meter comprises a detector, converter and
sampling system (which supplies process sample water, zero-calibration water (“zero water”),
and cleaning water). This instrument is classied into three types depending on the specications
for the sampling system. However, if specied in advance, the detector and converter may be
delivered separately.
Here, four types of the instrument, including the delivery of detector and converter separately,
will be described. Details on the detector and converter are described in Section 1.2, “Operating
Principle”.
1.1.1 TB400G-¨-¨-NN, -KC (without sampling system)
The detector and converter are available separately and can be assembled into any sampling
system.
The owrate condition for sample is 1.5 to 2 L/min. If the owrate exceeds this range, satisfy the
owrate condition by providing a head tank (constant-level chamber) or the like.
For measurements of low turbidity (less than 200 mg/L), prepare a sampling system which can
supply the zero water (tap water ltered with a zero-turbidity lter).
1.1.2 TB400G-¨-¨-A1 (with sampling system, without
automatic cleaning or automatic zero calibration)
This is a system which combines the detector and converter with a sampling system to manually
supply process sample, zero water, and cleaning water (see subsection 2.6.1).
The measuring water ows into a header tank (constant-level chamber), serving also as a bubble
separation tank, after passing the ball valve located after the tap water inlet port.
Debubbled sample in this tank ow into the measuring cell in the detector at a constant owrate,
and drains through the drain outlet after overowing at the measuring cell.
The cleaning water passes the ball valve located after the tap water inlet port and ows into
the measuring cell in the detector from the cell side. The cleaning water then starts swirling
and removes dirt on the measuring cell wall. The dirt, together with the opening the ball valve
mounted under the header tank.
During zero check, the zero water is ltered by passing through a zeroturbidity lter from the tap
water inlet. This zero water ows into the measuring cell in the detector via the head tank through
a tube separate from that for the sample and drains through the drain outlet.
1.1.3 TB400G-¨-¨-A2 (with automatic cleaning and without
automatic zero calibration)
This is a system which comprises the TB400G---A1 model with the automatic cleaning
function added (see subsection 2.6.2).
The sampling system of this system incorporates a solenoid valve at the cleaning water tube and
an electric motor-operated valve under the header tank. These provisions automatically clean the
measuring cell under the detector in a sequence preset in the converter.

<1. OVERVIEW> 1-3
IM 12E04A02-02E 9th Edition : Mar. 16, 2018-00
1.1.4 TB400G-¨-¨-A3 (with automatic cleaning and zero
calibration)
This is a system which comprises the TB400G---A1 model with the automatic cleaning and
automatic zero calibration functions added (see subsection 2.6.3).
The sampling system of this system incorporates solenoid valves at the cleaning water tubing
and zero calibration tubing and electric motor-operated valves under the header tank and at the
measuring-water tubing. These provisions automatically clean the measuring cell in the detector
and perform zero calibration in a sequence preset in the converter.
1.2 Operating Principle
The operating principle of the Surface Scattering Light Turbidity Meter employs a method of
measuring the amount of the light scattering that takes place close to the surface of the water
sample. The measuring system comprises a detector and a converter. This section describes the
meter conguration and operating principle.
The detector is comprises a measuring cell and a detecting section. Sample that ows into the
measuring cell from the bottom of the cell overows at the top of the cell.
Meanwhile, a tungsten lamp closed inside the detector emits light onto the surface of the sample
through a system of lenses. This light is separated into scattered, reected, and transmitted
light on the water’s surface. The transmitted light and reected light are absorbed in a dark area
equivalent to a black body.
This scattered-light intensity (L) is proportional to the turbidity as shown here:
L = K •Q •S
Where K: a constant relative to turbidity,
S: turbidity,
Q: amount of light from the lamp.
The scattered light is detected by a turbidity element (a silicon photodiode). It is focused onto
the element with a lens inside the detecting section. This gives the scattered light signal to the
converter.
In addition, a reference element is incorporated in the detecting section to hold the amount a light
(Q) from the lamp constant, and it also provides a light-detection signal to the converter.
The measuring circuit of the converter is sealed in a housing of aluminum alloy together with the
operating panel and a terminal block for external wiring. This measuring circuit amplies and
calculates the input from the turbidity element in the detector and outputs a signal (1 to 5 V DC or
4 to 20 mA DC) corresponding to the measuring range.
The converter also calculates the reference element input from the detector to control the lamp
voltage so that the amount of light from the lamp is constant.