YOKOGAWA ST401G User manual

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

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i
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

ii
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.

iii
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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v
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

< 1. Overview > 1-3
IM 12A0V2-E
1.2 ST401G-FC4
ST401G-FC4 is composed with the FC400G non-reagent type free available chlorine analyzer
(converter and detector) and sampling system.
Refer to figure 3.1 to 3.8 for the configuration.
NOTE
Put ceramic beads in the cell of detector before the measurement. Refer to the manual IM 12F5A1-
01E "Model FC400G Free Available Chlorine Analyzer (Non-reagent type)"
1.3 ST401G-PH
ST401G-PHu is composed of the PH400G or PH450G pH converter, PH8EFP pH sensor, PH8HF
flow-through type pH holder, and sampling system. Moreover, PUS400G ultrasonic cleaner can be
built in (optional). Refer to Figure 3.9 to 3.16 for the configuration.
NOTE
The pH sensor is packed separately. Install and wire as per the manual IM 12B7J1-01E "PH8EFP pH
Sensor (KCl filling type)". Refer to Figure 3.36 to 3.43 for the wiring.
When option code “/TT3” is specified, the 500 ml KCl reserve tank for pH sensor will be installed in the
system before factory shipping.
1.4 ST401G-PF
ST401G-PFis composed of pH converter system (converter, sensor, and flow-through type holder),
free available chlorine analyzer (converter and detector), and sampling system. Please refer to Figure
3.17 to 3.32 for the configuration.
Moreover, the pH converter system can built in ultrasonic cleaner if specified at order time.
NOTE
The pH sensor is packed separately. Install and wire as per the manual IM 12B7J1-01E "PH8EFP pH
Sensor (KCl filling type)". Refer to Figure 3.36 to 3.43 for the wiring also.
When option code “/TT3” is specified, the 500 ml KCl reserve tank for pH sensor will be installed in the
system before factory shipping.
Put ceramic beads in the cell of detector before the measurement. Refer to the manual IM 12F5A1-
01E "Model FC400G Free Available Chlorine Analyzer (Non-reagent type)".

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< 2. Specifications > 2-1
IIM 12A0V2-E
2. SPECIFICATIONS
Measurement:
Free available chlorine concentration of tap water, pH of or tap water industrial water.
Instruments integrated:
FC400G non-reagent type free available chlorine analyzer, PH400G or PH450G 4-wire pH converter
system, Refer to respective user’s manual.
Calibration method:
Chlorine analyzer: Manual/auto zero calibration
pH meter: Manual calibration
Cleaning system:
Chlorine analyzer: Not provided
pH analyzer: Ultrasonic cleaning
Sample (process) conditions:
Pressure: 100 to 750 kPa (Under 100 kPa, consult Yokogawa)
Flow rate: Chlorine analyzer: 0.1 to 10 l/min
pH analyzer: 3 to 10 l/min
Temperature: 0 to 50 °C
Ambient conditions:
Temperature: -5 to 50 °C
(Protection against freeze should be provided when necessary in winter.)
Humidity: 5 to 95% RH, non-condensing (10 to 90 % for pH converter system)
Storage temperature:
-30 to 70 °C (-25 to 70 °C when using PUS400G)
Dimensions:
Chlorine analyzer integrated: 530(W) × approx. 1312(H) × 550(D) mm
pH analyzer integrated: 530(W) × approx. 1320(H)*× 550(D) mm
Both integrated: 530(W) × approx. 1320(H)*× 550(D) mm
*) Approx. 1370(H) when option code of “/TT3” specified.
Materials:
Piping: Hard PVC, polypropylene resin
Stanchion: Carbon steel or stainless steel
Finish: Baked polyurethane resin coating
Color: Equivalent to Munsell 0.6GY3.1/2.0

< 2. Specifications >
2-2
IM 12A0V2-E
Installation site:
Indoors or in cabinet: not exposed to the weather. Minimal vibration and
shock allowed. Maintenance space required. No corrosive gases present.
Moderate humidity.
Piping connection:
Sample inlet: VP16
Drain: VP40
Cable inlet: Watertight plastic cable gland equivalent to JIS A15
Cable size: 9 to 12 mm OD
Power supply:
100 V AC ±10%, 50/60 Hz
110 V AC ±10%, 50/60 Hz
200 V AC ±10%, 50/60 Hz
220 V AC ±10%, 50/60 Hz
(depending on system configuration)
When option code “/RR” specified, two measurement range set in the FC400G can be switched
remotely.
Remote range switching contact input:
Applied voltage when contact input is opened: 5 V DC (Range 1)
Applied current when contact input is closed: 20 μA (Range 2)
Remote range switching contact output:
Contact type: dry contact output
Contact rating: 250 V AC, 1A, 125 VA (resistance load)
220 V DC, 1A, 60 W (resistance load)
Contact
Status at
Power OFF
Contact Status at Power ON
During Non-
activated During Activated
Open Open Closed
Note : Open: Range 1, Closed: Range 2
Power consumption:
Approx. 45 VA (with FC400G non-reagent type free available chlorine analyzer, pH converter system,
and ultrasonic oscillator) (depending on system configuration)
Apparent power of solenoid valve for auto zero calibration
When activated: 22/17 VA (50/60 Hz)
When non-activated: 35/27 VA (50/60 Hz)
Weight: Approx. 45 kg (depending on system configuration)

< 3. INSTALLATION, PIPING AND WIRING > 3-1
IM 12A0V2-E
3. INSTALLATION, PIPING, AND WIRING
3.1 Unpacking
The ST401G sampling system is sufficiently packed for shipment to prevent damage during
transportation.
Unpack carefully near the place of installation.
3.2 Installation place
Install the ST401G sampling system at a location as below:
(1) Free from rain water such as indoor or in a cubicle
(2) Low vibration
(3) Low corrosive gas
(4) Low humidity
(5) Low temperature variation and the temperature is maintained at or as near to room temperature
as possible
(6) Sufficient maintenance space and easy maintenance access
3.3 Installation
Install the sampling system on a well-drained concrete foundation or the equivalent with anchor bolts
(M12). Refer to external dimensions (Figure 3.1 to 3.32) for the position of the anchor bolts.
Keep sufficient maintenance space around the sampling system.

< 3. INSTALLATION, PIPING AND WIRING >
3-2
IM 12A0V2-E
Unit: mm
Power line/output signal
(Cable O.D. 9 to 12 mm)
NV1
BV1
PR1
Weight : Approx. 35kg
PR1 : Pressure reducing valve
NV1 : Needle valve
BV1 : Ball valve
(Note) Option code: /ARS (with arrester)
(Note)
253
150
455
385 150
550
530
350 )(100
100
490 )(2020
A
View A
For anchor bolts
4 - Ø15 holes
VP40 pipe
Drain outlet
VP16 pipe
Sample inlet
Free available
chlorine detector
Free available
chlorine converter
Terminal box
Approx. 1312
FC400G
FC400G
600Approx.500
530 Approx. 200
Approx. 200
Maintenance
Space
Maintenance
Space
Maintenance
Space
Front
Figure 3.1 ST401G-FC4-N-A(/ARS) With free available chlorine analyzer, (arrester), (bottom piping)

< 3. INSTALLATION, PIPING AND WIRING > 3-3
IM 12A0V2-E
Unit: mm
NV1
BV1
PR1
Weight : Approx. 35kg
Power line/output signal
(Cable O.D. 9 to 12 mm)
PR1 : Pressure reducing valve
NV1 : Needle valve
BV1 : Ball valve
(Note) Option code: /ARS (with arrester)
(Note)
93
80
550
530
350 )(100
100
490 )(2020
50 150
A
View A
For anchor bolts
4 - Ø15 holes
VP40 pipe
Drain outlet
VP16 pipe
Sample inlet
Free available
chlorine detector
Free available
chlorine converter
Terminal box
Approx. 1312
FC400G
FC400G
600Approx.500
530 Approx. 200
Approx. 200
Maintenance
Space
Maintenance
Space
Maintenance
Space
Front
Figure 3.2 ST401G-FC4-N-A/R(/ARS) With free available chlorine analyzer, (arrester), (back piping)

< 3. INSTALLATION, PIPING AND WIRING >
3-4
IM 12A0V2-E
Unit: mm
385
490 )(2020
350 )(100
100
530
550
455
Terminal box (option)
A
Free available
chlorine converter
Free available
chlorine detector
VP16 pipe
Sample inlet VP40 pipe
Drain outlet
For anchor bolts
4 - Ø15 holes
View A
FC400G
FC400G
253
150
150
Power line/output signal
(Cable O.D. 9 to 12 mm)
Weight : Approx. 40kg
PR1
BV1
NV1
Activated
charcoal
filter
SV1 : 3-way solenoid valve
PR1 : Pressure reducing valve
NV1 : Needle valve
BV1 : Ball valve
SV1
(Note) Option code: /ARS (with arrester)
(Note)
600Approx.500
530 Approx. 200
Approx. 200
Maintenance
Space
Maintenance
Space
Maintenance
Space
Front
Figure 3.3 ST401G-FC4-N-A/AZC(/ARS) With free available chlorine analyzer, auto zero calibration,
(arrester), (bottom piping)

< 3. INSTALLATION, PIPING AND WIRING > 3-5
IM 12A0V2-E
Unit: mm
Approx.1312
For anchor bolts
Weight : Approx. 40kg
NV1
PR1
BV1
SV1
Terminal box (option)
Free available
chlorine converter
Free available
chlorine detector
Power line/output signal
(Cable O.D. 9 to 12 mm)
Activated
charcoal
filter
SV1 : 3-way solenoid valve
PR1 : Pressure reducing valve
NV1 : Needle valve
BV1 : Ball valve
(Note) Option code: /ARS (with arrester)
(Note)
93
80
550
530
350 )(1 0 0
100
490 )(2020
50 150
View A
VP40 pipe
Drain outlet
VP16 pipe
Sample inlet
AFC400G
FC400G
4 - Ø15 holes
600Approx.500
530 Approx. 200
Approx. 200
Maintenance
Space
Maintenance
Space
Maintenance
Space
Front
Figure 3.4 ST401G-FC4-N-A/R/AZC(/ARS/) With free available chlorine analyzer, auto zero
calibration, (arrester), (back piping)

< 3. INSTALLATION, PIPING AND WIRING >
3-6
IM 12A0V2-E
Unit: mm
Power line/output signal
(Cable O.D. 9 to 12 mm)
Weight : Approx. 50kg
PR1
BV1
BV4
NV1
BV2
BV3
Activated
charcoal filter
SV1 : 3-way solenoid valve
PR1 : Pressure reducing valve
NV1 : Needle valve
BV1 to BV4 : Ball valve
SV1
PUS400G (Note)
(Note) Suffix code: -U (with ultrasonic oscillator)
pH sensor
PH8EFP
550
455
350 )(100
100
490 )(2020
530
Approx.1320
385 150
View A
For anchor bolts
A
FC400G
PH8HF
FC400G
PH400G
Free available
chlorine converter
Free available
chlorine detector
VP40 pipe
Drain outlet
pH holder
pH ultrasonic oscillator
pH converter
KCl tank
VP16 pipe
Sample inlet
Terminal box
4 - Ø15 holes
250
150
600Approx.500
530 Approx. 200
Approx. 200
Maintenance
Space
Maintenance
Space
Maintenance
Space
Front
Figure 3.5 ST401G-FC4-N-A/RR With free available chlorine analyzer, remote range switching,
(bottom piping)