YOKOGAWA ST401G User manual

User’s
Manual
R
Model ST401G
Sampling System
IM 12A0V2-E
IM 12A0V2-E
6th Edition

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IM 12A0V2-E
<INTRODUCTION>
INTRODUCTION
This manual explains the installation, operation and use of the sampling system. Read through this
manual before operation for your safety and to obtain the specified performance from the sampling
system.
Refer to the manuals shown below for the handling of pH converter system and free available chlorine
analyzer used with this sampling system.
Model Title IM No.
PH400G pH Converter IM 12B7C1-02E
PH450G pH/ORP Converter IM 12B07C05-01E
PH8EFP KCl filling type pH Sensor IM 12B7J1-0lE
FC400G Free Available Chlorine Analyzer
(Non-reagent Type)
IM 12F5A1-0lE
PUS 400G Ultrasonic Oscillator IM 19C1B3-01E
PH8HF Flow-Through Type Holder IM 12B07N01-01E
Safety, Protection, and Modification 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 liabil-
ity for safety if users fail to observe these instructions when operating the product.
• If this instrument is used in a manner not specified 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.
• Modification of the product is strictly prohibited.
• The following symbols are used in the product and user’s manual to indicate that there are pre-
cautions for safety:
Notes on Handling User’s Manuals
• Please hand over the user’s manuals to your end users so that they can keep the user’s manu-
als 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 par-
ticular 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 find mistakes or omissions in the user’s manuals, please con-
tact our sales representative or your local distributor.
Media No. IM 12A0V2-E 6th Edition :Dec. 2010 (YK)
All Rights Reserved Copyright © 1996, Yokogawa Electric Corporation

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IM 12A0V2-E
<INTRODUCTION>
Warning and Disclaimer
The product is provided on an “as is” basis. YOKOGAWA shall have neither liability nor responsibil-
ity 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.
Notes on Hardware
Appearance and Accessories
Check the following when you receive the product:
• Appearance
Contact our sales representative or your local distributor if the product’s coating has come off, it has
been damaged.
Model and Suffix Codes
The name plate on the product contains the model and suffix codes. Compare them with those in the
general specification to make sure the product is the correct one. If you have any questions, contact
our sales representative or your local distributor.
Symbol Marks
Throughout this user’s manual, you will find several different types of symbols are used to identify dif-
ferent sections of text. This section describes these icons.
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate
injury. It may also be used to alert against unsafe practices.
IMPORTANT
Indicates that operating the hardware or software in this manner may damage it or lead to system
failure.
NOTE
Draws attention to information essential for understanding the operation and features.

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IM 12A0V2-E
<INTRODUCTION>
After-sales Warranty
Do not modify the product.
During the warranty period, for repair under warranty consult the local sales
representative or service office. Yokogawa will replace or repair any damaged
parts. Before consulting for repair under warranty, provide us with the model
name and serial number and a description of the problem. Any diagrams or
data explaining the problem would also be appreciated.
If we replace the product with a new one, we won’t provide you with a repair report.
Yokogawa warrants the product for the period stated in the pre-purchase quotation Yokogawa
shall conduct defined warranty service based on its standard. When the customer site is located
outside of the service area, a fee for dispatching the maintenance engineer will be charged to the
customer.
In the following cases, customer will be charged repair fee regardless of war-
ranty period.
• Failure of components which are out of scope of warranty stated in instruction manual.
• Failure caused by usage of software, hardware or auxiliary equipment, which Yokogawa Electric
did not supply.
• Failure due to improper or insufficient maintenance by user.
• Failure due to modification, misuse or outside-of-specifications operation which Yokogawa does
not authorize.
• Failure due to power supply (voltage, frequency) being outside specifications or abnormal.
• Failure caused by any usage out of scope of recommended usage.
• Any damage from fire, earthquake, storms and floods, lightning, disturbances, riots, warfare,
radiation and other natural changes.
Yokogawa does not warrant conformance with the specific application at the
user site. Yokogawa will not bear direct/indirect responsibility for damage due
to a specific application.
Yokogawa Electric will not bear responsibility when the user configures the
product into systems or resells the product.
Maintenance service and supplying repair parts will be covered for five years
after the production ends. For repair for this product, please contact the near-
est sales office described in this instruction manual.

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IM 12A0V2-E
<CONTENTS>
Model ST401G
Sampling System
CONTENTS
IM 12A0V2-E 6th Edition
INTRODUCTION .......................................................................................................i
After-sales Warranty..........................................................................................iii
1. OVERVIEW................................................................................................1-1
1.1 System configuration.......................................................................................1-1
1.2 ST401G-FC4.......................................................................................................1-3
1.3 ST401G-PH.....................................................................................................1-3
1.4 ST401G-PF......................................................................................................1-3
2. SPECIFICATIONS ..................................................................................... 2-1
3. INSTALLATION, PIPING,AND WIRING...................................................3-1
3.1 Unpacking..........................................................................................................3-1
3.2 Installation place...............................................................................................3-1
3.3 Installation.........................................................................................................3-1
3.4 Piping ...............................................................................................................3-34
3.5 Wiring...............................................................................................................3-34
4. OPERATION .............................................................................................. 4-1
4.1 ST401G-FC4-N-A (With free available chlorine analyzer).............................4-1
4.2 ST401G-PH--A (With pH converter system).............................................4-2
4.3 ST401G-PF--A
(With pH converter system and free available chlorine analyzer)...............4-3
4.4 ST401G-FC4-N-A/AZC
(With auto zero calibration for free available chlorine analyzer).................4-4
4.5 ST401G-PF--A/AZC
(With auto zero calibration for free available chlorine analyzer and pH
converter system).............................................................................................4-5
5. MAINTENANCE.........................................................................................5-1
5.1 Confirmation of flow rates of sample .............................................................5-1
5.2 Leakage check ..................................................................................................5-1
5.3 Maintenance of each built-in equipment........................................................5-1
Customer Maintenance Parts List...................................... CMPL 12A00V02-00E
Revision Information...............................................................................................i

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< 1. Overview > 1-1
IM 12A0V2-E
1. OVERVIEW
Model ST401G is a compact sampling system which can be used with the pH converter system and
the model FC400G non-reagent type free available chlorine analyzer.
The measurement can be started after only simple installation because the ST401G is provided with a
pressure-reducing valve and ball valve, and shipped with customer ordered devices.
1.1 System configuration
There are three types of sampling system. With free available chlorine analyzer, with pH converter
(with the ultrasonic cleaner according to order) and with both non-reagent type free available chlorine
analyzer and pH converter.
The model name and suffix codes are shown in Table 1.1. The outline is shown in item 1.2 to 1.4.
Table 1.1 Model and Codes
Model Suffix Code Option Code Description
ST401G ..................... ................... Sampling system
System) -FC4
-PH4
-PH5
-PF4
-PF5
...................
...................
...................
...................
...................
With free available chlorine analyzer (FC400G) (note 1)
With pH converter (PH400G) (note 2)
With pH converter (PH450G) (note 2)
With free available chlorine analyzer (FC400G) and pH
converter (PH400G) (note 1) (note 2) (note 3)
With free available chlorine analyzer (FC400G) and pH
converter (PH450G) (note 1) (note 2) (note 3)
Ultrasonic oscillator
(for pH meter)
-N
-U
...................
...................
Not supplied
Supplied
___ -A ................... Always -A
Option /R
/AN
/S
/ARS
/AZC1
/AZC2
/AZC3
/AZC4
/RR
/SCT
/TT3
Piping connections on the back
Without instrument
With stainless steel stand (note 4)
With arrester (power and signal lines only) (note 5)
With auto zero calibration for 100 V AC (note 6)
With auto zero calibration for 110 V AC (note 6)
With auto zero calibration for 200 V AC (note 6)
With auto zero calibration for 220 V AC (note 6)
With remote range switching (note 7)
With stainless tag plate
With 500 ml KCl reserve tank for pH sensor (note 2)
Model ST401G refers only to a sampling system and does not include a free available chlorine
analyzer and/or a pH meter(sensor,holder,converter and ultrasonic oscillator). (Instrument should be
purchased separately.)
Note that the ST401G Sampling System accepts the following models of note 1 or note 2 only, and
depending on system configuration.
Note 1: Non-reagent type free available chlorine analyzer (refer to GS 12F5A1-E)
When ordering, option code “/ST” (integration into ST401G sampling system) must be specified.
Note 2: 4-wire type pH converter system (refer to GS 12B7C1-E, GS 12B07C05-01E, GS 12B07B02-E,GS 12J5C2-E)
pH sensor: PH8EFP-03-TN-TT1-N-T*A (when suffix code of “-PH4”, “-PF4” specified.)
PH8EFP-03-TN-TT3-N-T*A (when suffix code of “-PH4”, “-PF4” and option code of “/TT3” specified.)
PH8EFP-03-TN-TT1-N-G*A (when suffix code of “-PH5”, “-PF5” specified.)
PH8EFP-03-TN-TT3-N-G*A (when suffix code of “-PH5”, “-PF5” and option code of “/TT3” specified)
pH holders: PH8HF-PP-JPT-T-NN-NN*A/MF1 (without cleaning system)
PH8HF-S3-JPT-T-NN-NN*A/MF1 (without cleaning system)
PH8HF-PP-JPT-T-S3-C1*A/MF1 (with ultrasonic cleaning)
PH8HF-S3-JPT-T-S3-C1*A/MF1 (with ultrasonic cleaning)
pH converter: PH400G--EA*B (when suffix code of “-PH4”, “-PF4” specified.)
PH450G-A-E (when suffix code of “-PH5”, “-PF5” specified.)
Ultrasonic oscillator: PUS400G-NN-NN--E (which power supply rating should be same as the pH converter.)
Note 3: Power supply rating of non-reagent type free available chlorine analyzer should be same as the pH converter.
Note 4: Specify if needed, instead of the standard stanchion made of carbon steel.
Note 5: Available only when the suffix code “-FC4”,“-PH4” or “-PH5” is specified.
Note 6: Available when free available chlorine analyzer is specified singly or in combination with pH meter, by suffix code, “-FC4”,
“-PF4” or “-PF5.”
Note 7: Available when free available chlorine analyzer is specified singly by suffix code, “-FC4.” An arrester is supplied automatically
with this option.

< 1. Overview >
1-2
IM 12A0V2-E
Dimensions, wiring and piping diagram for the ST401G are shown on following pages. For figure
numbers to be referred corresponding each models and codes are shown in the Table 1.2 below.
Table 1.2 uses following signs.
FC: free available chlorine analyzer, pH: pH meter, US: ultrasonic oscillator, ARS: arrester, AZC: auto
zero calibration, TT3: 500 ml KCl reserve tank for pH sensor, RR: remote range switching, R: piping
connections on the back, Yes: installed, No: not installed, Op: optionally installed
Table 1.2 Index of dimensions, wiring and piping diagram
Model and codes FC pH US ARS AZC TT3 RR R Dimen-
sions Wiring Piping
ST401G-FC4-N-A(/ARS) Yes No No Op No No No No Page 4 Page 36 Page 43
ST401G-FC4-N-A/R(/ARS) Yes No No Op No No No Yes Page 5 Page 36 Page 43
ST401G-FC4-N-A/AZC(/ARS) Yes No No Op Yes No No No Page 6 Page 36 Page 43
ST401G-FC4-N-A/R/AZC(/ARS) Yes No No Op Yes No No Yes Page 7 Page 36 Page 43
ST401G-FC4-N-A/RR Yes No No Yes No No Yes No Page 8 Page 37 Page 43
ST401G-FC4-N-A/R/RR Yes No No Yes No No Yes Yes Page 9 Page 37 Page 43
ST401G-FC4-N-A/AZC/RR Yes No No Yes Yes No Yes No Page 10 Page 37 Page 43
ST401G-FC4-N-A/R/AZC/RR Yes No No Yes Yes No Yes Yes Page 11 Page 37 Page 43
ST401G-PH4--A(/ARS) No Yes Op Op No No No No Page 12 Page 38 Page 44
ST401G-PH4--A/TT3(/ARS) No Yes Op Op No Yes No No Page 13 Page 38 Page 44
ST401G-PH4--A/R(/ARS) No Yes Op Op No No No Yes Page 14 Page 38 Page 44
ST401G-PH4--A/R/TT3(/ARS) No Yes Op Op No Yes No Yes Page 15 Page 38 Page 44
ST401G-PH5--A(/ARS) No Yes Op Op No No No No Page 16 P. 39, 40 Page 44
ST401G-PH5--A/TT3(/ARS) No Yes Op Op No Yes No No Page 17 P. 39, 40 Page 44
ST401G-PH5--A/R(/ARS) No Yes Op Op No No No Yes Page 18 P. 39, 40 Page 44
ST401G-PH5--A/R/TT3(/ARS) No Yes Op Op No Yes No Yes Page 19 P. 39, 40 Page 44
ST401G-PF4--A Yes Yes Op No No No No No Page 20 Page 41 Page 44
ST401G-PF4--A/TT3 Yes Yes Op No No Yes No No Page 21 Page 41 Page 44
ST401G-PF4--A/R Yes Yes Op No No No No Yes Page 22 Page 41 Page 44
ST401G-PF4--A/R/TT3 Yes Yes Op No No Yes No Yes Page 23 Page 41 Page 44
ST401G-PF4--A/AZCYes Yes Op No Yes No No No Page 24 Page 41 Page 45
ST401G-PF4--A/TT3/AZCYes Yes Op No Yes Yes No No Page 25 Page 41 Page 45
ST401G-PF4--A/R/AZCYes Yes Op No Yes No No Yes Page 26 Page 41 Page 45
ST401G-PF4--A/R/TT3/AZCYes Yes Op No Yes Yes No Yes Page 27 Page 41 Page 45
ST401G-PF5--A Yes Yes Op No No No No No Page 28 Page 42 Page 44
ST401G-PF5--A/TT3 Yes Yes Op No No Yes No No Page 29 Page 42 Page 44
ST401G-PF5--A/R Yes Yes Op No No No No Yes Page 30 Page 42 Page 44
ST401G-PF5--A/R/TT3 Yes Yes Op No No Yes No Yes Page 31 Page 42 Page 44
ST401G-PF5--A/AZCYes Yes Op No Yes No No No Page 32 Page 42 Page 45
ST401G-PF5--A/TT3/AZCYes Yes Op No Yes Yes No No Page 33 Page 42 Page 45
ST401G-PF5--A/R/AZCYes Yes Op No Yes No No Yes Page 34 Page 42 Page 45
ST401G-PF5--A/R/TT3/AZCYes Yes Op No Yes Yes No Yes Page 35 Page 42 Page 45