YOKOGAWA PH8HS User manual

User’s
Manual
R
Model PH8HS, PH8HSF
Submersion Type Holders
IM 12B07M01-01E
IM 12B07M01-01E
3rd Edition

Blank Page

i
IM 12B07M01-01E
<INTRODUCTION>
INTRODUCTION
This manual covers the PH8HS, PH8HSF Submersion Type Holders. Other related items are
described in the following manuals:
Model Title IM No.
PH8ERP KCl Rellable type pH Sensor IM 12B7K1-02E
PH8EFP KCl Filling type pH Sensor IM 12B7J1-01E
PH8EHP pH Sensor for Pure Water IM 12B7J2-01E
HA405 Solid Electrolyte (xerolyt) pH Sensor IM 12B7E1-01E
HA406 Solid Electrolyte (xerolyt) pH Sensor with Temperature Element IM 12B07E02-01E
DPAS405 pH Sensor for Small Culture Tanks IM 12B7G1-01E
DPA405 pH Sensor for Chemical Processes IM 12B7H1-01E
DPA406 pH Sensor for Chemical Process with Temperature Element IM 12B07H02-01E
HF405 Hydrouoric Acid-resistive pH Sensor IM 12B07L01-01E
FLXA21 2-Wire Liquid Analyzer IM 12A01A02-01E
PH201G*B Distributor IM 19B1E4-02E
PH450G pH/ORP Converter IM 12B07C05-01E
PH400G pH Converter IM 12B7C1-02E
PH202G, PH202S pH/ORP Transmitter IM 12B07D02-01E
PH100 Panel Mount pH Converter IM 12B11A01-01E
PUS400G Ultrasonic Oscillator IM 19C1B3-01E
PH8USF, PH8AL Ultrasonic Oscillator (Explosionproof Type), Alarm Box IM 12B5U2-E
PH8PU1 Cleaning Pump/Tank IM 19C1E1-01E
WTB10-PH¨Terminal Box IM 19D01B01-01E
PH8TBG Terminal Box IM 12B07W01-01E
OR8EFG KCl Filling type OPR Sensor IM 12C07J01-01E
OR8ERG KCl Rellable type OPR Sensor IM 12C04K01-01E
OR8TBG Terminal Box IM 12C04W01-01E
Media No. IM 12B07M01-01E 3rd Edition : Oct. 2011 (YK)
All Rights Reserved Copyright © 2004, Yokogawa Electric Corporation

ii
IM 12B07M01-01E
<INTRODUCTION>
For the safe use of this equipment
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.
• 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 find 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.

iii
IM 12B07M01-01E
<INTRODUCTION>
nSymbol Marks
Throughout this user’s manual, you will nd 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.
Tip
This symbol gives information that complements the current topic.
SEE ALSO
This symbol identies a source to be referred to.

iv
IM 12B07M01-01E
<INTRODUCTION>
After-sales Warranty
nDo not modify the product.
nDuring the warranty period, for repair under warranty consult the local sales
representativeorserviceofce.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.
l If we replace the product with a new one, we won’t provide you with a repair report.
l Yokogawa warrants the product for the period stated in the pre-purchase quotation Yokogawa
shall conduct dened 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.
nIn 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 insufcient maintenance by user.
• Failure due to modication, misuse or outside-of-specications operation which Yokogawa does
not authorize.
• Failure due to power supply (voltage, frequency) being outside specications or abnormal.
• Failure caused by any usage out of scope of recommended usage.
• Any damage from re, earthquake, storms and oods, lightning, disturbances, riots, warfare,
radiation and other natural changes.
nYokogawadoesnotwarrantconformancewiththespecicapplicationatthe
usersite.Yokogawawillnotbeardirect/indirectresponsibilityfordamagedue
toaspecicapplication.
nYokogawaElectricwillnotbearresponsibilitywhentheuserconguresthe
product into systems or resells the product.
nMaintenanceserviceandsupplyingrepairpartswillbecoveredforveyears
after the production ends. For repair for this product, please contact the near-
estsalesofcedescribedinthisinstructionmanual.

v
IM 12B07M01-01E
<CONTENTS>
Model PH8HS, PH8HSF
Submersion Type Holders
CONTENTS
IM12B07M01-01E3rdEdition
INTRODUCTION...................................................................................................i
For the safe use of this equipment ...................................................................ii
After-sales Warranty..........................................................................................iv
1. Specications ........................................................................................... 1-1
1.1 GeneralSpecications..................................................................................... 1-1
1.1.1 PH8HS Submersion Type Holder...................................................... 1-1
1.1.2 PH8HSF (Explosionproof Type) ....................................................... 1-2
1.2 ModelandSufxcodes.................................................................................... 1-3
1.2.1 Submersion Type Holder PH8HS...................................................... 1-3
1.2.2 Submersion Type Holder (Explosionproof Type) PH8HSF ............... 1-4
1.3 ExternalDimensions ........................................................................................ 1-5
2. Installation, Piping and Wiring................................................................ 2-1
2.1 Installing the Holder.......................................................................................... 2-1
2.1.1 Shipping and Checking the Specications ....................................... 2-1
2.1.2 Selecting the Holder Installation Site ................................................. 2-1
2.1.3 Installation Procedure........................................................................ 2-1
2.2 Mounting the Sensor .......................................................................................2-2
2.3 CleanerPiping.................................................................................................. 2-2
2.3.1 Piping Precautions............................................................................. 2-2
2.3.2 Piping Procedure ............................................................................... 2-4
2.3.3 Installation of PH8PU1 Washer Pump and Water Tank .................... 2-4
2.4 Wiring ................................................................................................................. 2-5
2.4.1 Solenoid Valve Circuit Wiring............................................................. 2-5
2.4.2 Wiring for PH8PU1 Washer Pump and Tank..................................... 2-6
3. Maintenance/Inspection .......................................................................... 3-1
3.1 CheckingtheO-ringthatSealsWettedParts ................................................ 3-1
3.1.1 pH Sensor O-ring .............................................................................. 3-1
3.1.2 Cleaner Mounting O-ring ................................................................... 3-1
3.2 CheckingtheCleaningElement...................................................................... 3-2
3.2.1 Jet Cleaning Element......................................................................... 3-2
3.2.2 Cleaning the Brush ............................................................................ 3-2
3.2.3 Ultrasonic Cleaning Element ............................................................. 3-3

vi
IM 12B07M01-01E
<CONTENTS>
3.2.4 Maintenance of PH8PU1 Washer Pump and Tank .......................... 3-4
Customer Maintenance Parts List (PH8HS) ..................... CMPL12B05M01-03E
Customer Maintenance Parts List (PH8HSF)................... CMPL12B05M01-04E
Revision Information ...............................................................................................i

< 1. Specications > 1-1
IM 12B07M01-01E
1. Specications
The Model PH8HS Submersion Type Holder is designed for use in open tanks, reactors, or
wastewater drains, and allows the whole sensor to be submerged with only the sensor tip exposed to
the solution. Holders with ultrasonic or brush cleaning options are available. The Model PH8HSF is a
version with ultrasonic cleaning for high-pressure explosionproof applications.
1.1 General Specications
1.1.1 PH8HS Submersion Type Holder
Applicable sensors:
General pH Sensors PH8ERP, PH8EFP, PH8ERG, PH8EFG
Special pH Sensors HA405, HA406, DPA405, DPA406, HF405
General ORP Sensors OR8ERG, OR8EFG
Special ORP Sensors HA485, DPA485
(Note) An adapter is required when using special pH/ORP sensors.
When using with special pH/ ORP sensors, this holder cannot be used outdoors due to exposure to rain or due to
condensation at a high humid place.
Mounting: 2-inch pipe mounting vertical or horizontal, with 1 or 2 set of mounting hardware,
  orangemounting.
   (Note)Makesurethemountingpipeisrmlyinstalled.
Cleaning method: Jet cleaning, brush cleaning or ultrasonic cleaning
(Note) Brush cleaning and ultrasonic cleaning cannot be used with special pH/ORP sensor.
Material: Holder; Polypropylene or stainless steel (equivalent to SUS316)
Flange; Polypropylene or stainless steel (equivalent to SUS304)
O-ring; Fluoro-rubber (Viton) or Daielperfrow
Mounting bracket; Galvanized iron or stainless steel (equivalent to SUS304)
Cleaning unit (wetted parts):
Ultrasonic; Stainless steel (equivalent to SUS316), titanium or Hastelloy C
Jet; Polypropylene
Brush; Polypropylene, titanium (shaft), Rulon ® (bearings)
Weight: Holder; Approx. 0.5 to 5 kg (polypropylene)
Approx. 1.5 to 11.5 kg (stainless steel)
Mounting bracket; Approx. 1 kg/set
Flange; Approx. 0.5 to 1.8 kg (polypropylene)
Approx. 0.9 to 15.6 kg (stainless steel)
Measuring temperature:
No Cleaning; -5 to 100°C
With Cleaning; -5 to 80°C
   (Note)Thetemperaturemaybelimitedbythespecicationsofthesensor.
Measuring ow speed: 2 m/s or less.
   (Note)Theowratemaybelimitedbythespecicationsofthesensor.
Measuring pressure:
Submersion depth; Max. 3 m
   (Note)Thepressuremaybelimitedbythespecicationsofthesensor.

< 1. Specications >
1-2
IM 12B07M01-01E
Utility required for cleaning unit:
Utility Pressure (kPa) Flow rate
Water jet 200 to 400 + Liquid pressure 5 to 20 l/min
Water brush 100 to 250 + Liquid pressure 20 to 30 l/min
Air jet 200 to 400 + Liquid pressure 100 to 300 Nl/min
Air brush 100 to 250 + Liquid pressure 300 to 600 Nl/min
(Note1)Pressureandowratemustbesimultaneouslysatisedattheholderinletport.
(Note2)Alargebraid-reinforcedtubeofØ22xØ15isrecommendedforsupplyduetotheowrate.
1.1.2 PH8HSF (Explosionproof Type)
The holder is used only when using ultrasonic cleaning system in the explosionproof area. Use
PH8HS when using no cleaning, jet cleaning or brush cleaning.
Applicable sensors:
General pH Sensors; PH8ERP, PH8EFP, PH8ERG, PH8EFG
General ORP Sensors; OR8ERG, OR8EFG
Mounting:
2-inch pipe mounting vertical or horizontal with 1 or 2 set of mounting hardware,
 orangemounting.
  (Note)Makesurethemountingpipeisrmlyinstalled.
Cleaning method: Ultrasonic cleaning
Material:
Holder; Polypropylene or stainless steel (equivalent to SUS316)
Flange; Polypropylene or stainless steel (equivalent to SUS304)
O-ring; Fluor-rubber (Viton) or Daielperfrow
Mounting bracket: Galvanized iron or stainless steel (equivalent to SUS304)
Cleaning unit (wetted parts):
Ultrasonic: Stainless steel (equivalent to SUS316), titanium or Hastelloy C
Construction: TIIS(JIS)ameprooftype(ford2G4gas)
Cable entrance port of terminal box: G 3/4
Weight:
Holder; Approx. 0.5 to 3.2 kg (polypropylene)
Approx. 1.5 to 11.5 kg (stainless steel)
Mounting bracket; Approx. 1 kg/set
Flange; Approx. 1.5 kg (polypropylene)
Approx. 15 kg (stainless steel)
Measuring temperature: -5 to 80°C
  (Note)Thetemperaturemaybelimitedbythespecicationsofthesensor.
Measuring ow speed: 2 m/s or less
  (Note)Theowspeedmaybelimitedbythespecicationsofthesensor.
Measuring pressure:
Submersion depth; Max. 3 m
  (Note)Thepressuremaybelimitedbythespecicationsofthesensor.

<1.Specications> 1-3
IM 12B07M01-01E
1.2 ModelandSufxcodes
1.2.1 Submersion Type Holder PH8HS
T1.2.EPS
Model
PH8HS
Suffix Code Option Code Description
Material
Pipe length
pH Measuring
System
Cleaning
System
Cable Length for
Ultrasonic Cleaning
Connector for Jet
or Brush Cleaning
Mounting
Bracket
Special
Mounting
O-ring
Style Code
Submersion type holder
Polypropylene
Stainless steel
1.0m
1.5m
2.0m
2.5m
3.0m
Always -T
None
For ultrasonic cleaning (Transducer: SUS316) (*1)
For ultrasonic cleaning (Transducer: Titanium) (*2)
For ultrasonic cleaning (Transducer: Hastelloy C) (*3)
For jet cleaning. The solenoid valve must be specified separately.
For brush cleaning. The solenoid valve must be specified separately.
None
3m
5m
7m
10m
15m
20m
Rc1/2
1/2 NPT
Style A
Mounting bracket : 1 set
Mounting bracket : 2 sets
Stainless steel mounting bracket : 1 set
Stainless steel mounting bracket : 2 sets
With flange (Without Cleaning System)
With flange (With Cleaning System)
Daielperfrow (*4)
*1: General purpose (Normal pH3 to 14) *2: For salt water *3: For acid (Normal pH 0 to 4)
*4: Choose Daielperfrow when this holder is used in organic solvent, high alkali or high temperature alkali.
*5: The required number of mounting bracket sets depends on the installation location and flow rate. In general,
one set is sufficient for pipe lengths of 1 meter, and otherwise two sets are required.
-PP
-S3
-10
-15
-20
-25
-30
-T
-NN
-S3
-TN
- HC
-JT
- BR
-NN
-C3
-C5
-C6
-C7
-C8
-C9
-JP
- NP
*A
/MS1
/MS2
/MS3
(*5) /MS4
/F1
/F2
/PF
Options

<1.Specications>
1-4
IM 12B07M01-01E
1.2.2 SubmersionTypeHolder(ExplosionproofType)PH8HSF
T1.3.EPS
Model
PH8HSF
-PP
-S3
-10
-15
-20
-T
-S3
-TN
-HC
-JS
*A
/MS1
/MS2
/MS3
/MS4
/F
/PG2
/SCT
/PF
Suffix Code Option Code Description
Submersion type holder
Polypropylene
Stainless steel
1.0m
1.5m
2.0m
Always -T
SUS316 Transducer (*1)
Titanium Transducer (*2)
Hastelloy C Transducer (*3)
TIIS Flameproof (d2G4)
Style A
Mounting bracket : 1 set (*6)
Mounting bracket : 2 sets (*6)
Stainless steel mounting bracket : 1 set (*6)
Stainless steel mounting bracket : 2 sets (*6)
With flange (JIS 10K 200 FF)
Adaptor 3/4 inch
Stainless steel tag plate
Daielperfrow (*5)
Material
Pipe Length
pH Measuring System
Cleaning System (*4)
(Ultrasonic cleaning
only)
Explosion Protection
Style Code
Options
Mounting
Bracket
Special Mounting
Flameproof Packing
Tag Plate
O-ring
*1: General purpose (Normal pH3 to 14) *2: For salt water *3: For acid (Normal pH0 to 4)
*4: Use PH8HS for no cleaning, Jet cleaning or brush cleaning.
*5: Choose Daielperfrow when this holder is used in organic solvent, high alkali or high temperature alkali.
*6: The required number of mounting bracket sets depends on the installation location and flow rate. In general,
one set is sufficient for pipe lengths of 1 meter, and otherwise two sets are required.

<1.Specications> 1-5
IM 12B07M01-01E
1.3 ExternalDimensions
1. Submersion Type Holder, Polypropylene PH8HS-PP UNIT: mm
<Without Cleaner> <With Jet Cleaner> <With Brush Cleaner>
<With Ultrasonic Cleaner>
83
62 42
44 64
Ø34
Ø51
Ø50
138.5
Ø22
L-40
Approx.155
105
55
Cable for ultrasonic cleaning
(l : Cable length)
55
75
L-323
L+145
Ø22
L-40
Approx.155
105
35
55
□ 1/2NPT
(Code : -NP)
□ Rc1/2
(Code : -JP)
55
75
L-323
L+165
Ø22
L-40
Approx.155
105
35
55
□ 1/2NPT
(Code : -NP)
□ Rc1/2
(Code : -JP)
55
75
L-323
L+165
L+31
L = Normal holder length (Standard: 1000 mm, 1500 mm, 2000 mm, 2500 mm, 3000 mm)
Figure 1.1 Submersion Holder (1)

<1.Specications>
1-6
IM 12B07M01-01E
2. SubmersionTypeHolder,StainlessSteelPH8HS-S3 UNIT: mm
<Without Cleaner> <With Jet Cleaner> <With Brush Cleaner>
<With Ultrasonic Cleaner>
83
62 42
44 64
Ø34
Ø48.6
141.0
Ø22
L+31
Approx. 200
176
42
Cable for ultrasonic cleaning
49
75
L-323
L+56
Ø22
L+31
Approx. 200
176
42
35
49
75
L-323
L+56
□ 1/2NPT
(Code : -NP)
□ Rc1/2
(Code : -JP)
Ø22
L+31
Approx. 200
176
42
35
49
75
L-323
L+56
□ 1/2NPT
(Code : -NP)
□ Rc1/2
(Code : -JP)
L+31
L = Normal holder length (Standard: 1000 mm, 1500 mm, 2000 mm, 2500 mm, 3000 mm)
Figure 1.2 Submersion Holder (2)

<1.Specications> 1-7
IM 12B07M01-01E
3. SubmersionTypeHolder(ExplosionproofType) UNIT: mm
Stainless Steel PH8HSF-PP, Polypropylene PH8HSF-S3
L-40
Approx. 155
55
333
75
Ø50
Ø34
55
105
47
74
6942
151
L-323
260
F1.2.ai
JIS flameproof packing
adapter (optional /PG2)
G3/4 Thread
Ø22
Ø80
Ø22
L+31
Approx. 232
L = Normal holder length (Standard: 1000 mm, 1500 mm, 2000 mm)
49
379
75
Ø48.6
Ø34
42
176
f80
47
74
6942
151
L-323
245
JIS flameproof packing
adapter (optional /PG2)
G3/4 Thread
Figure1.3 SubmersionHolder(3)

<1.Specications>
1-8
IM 12B07M01-01E
4. MountingBracketforSubmersionTypeHolder,/MS1:1set,/MS2:2setsUNIT: mm
68
Sensor Holder
2-inch (OD 60.5)
Stanchion
<For Holder without cleaner>
<For Holder with Cleaner>
Cleaner Holder
90
90
95
54
600
Max : 515
Min : 110
Max : 515
Min : 110
600
62
64
94
54
100
130
f48.6
F1.3-1.ai
2-inch (OD 60.5)
Stanchion
5.StainlessSteelMountingBracketforSubmersionTypeHolder,/MS3:1set,/MS4:2sets
28
65
55
48.5
Min : 236
Max : 500
44
51
55
Cleaner holder
Sensor holder
Holder with cleaner
Holder without cleaner
600
224444444422 44 4444
F1.3-2.ai
2-inch (OD 60.5)
Stanchion
Figure 1.4 Mounting Bracket

<1.Specications> 1-9
IM 12B07M01-01E
6. Flange Mounting UNIT: mm
/F1:Flangeofholderwithoutcleaner/F2:Flangeofholderwith
cleanerMaterial: Polypropylene, Material: Polypropylene
F1.4-1.ai
Weight: Approx. 1.5 kg
Min : 405
Max : L-130
Ø290
22
78
Approx. 155
Ø330
12-Ø23 holes
JIS 10K 200 FF equivalent
flange
(PH8HSF-PP.../F)
L+31
Ø175
Weight: Approx. 1 kg
18
Min : 150
Max : L-115
74
Ø210
8-Ø19 holes
JIS 10K 100 FF equivalent
flange
Plate and screws
(SUS304)
/F1:Flangeofholderwithoutcleaner/F2:Flangeofholderwithcleaner
Material:SUS316Stainlesssteel, Material:SUS316Stainlesssteel
L+31
Ø175
Weight: Approx. 5 kg Weight: Approx. 15 kg
18
Min : 150
Max : L-115
Min : 430
Max : L-80
74 Ø290
22
78
Approx. 232
Ø210
8-Ø19 holes
JIS 10K 100 FF equivalent
flange
Ø330
12-Ø23 holes
JIS 10K 200 FF equivalent
flange
F1.4-2.ai
(PH8HSF-S3.../F)

<1.Specications>
1-10
IM 12B07M01-01E
7. Solenoid Valve UNIT: mm
11028
2945
71
100
86
91 G1/2
G1/2
2-Rc1/2
46
36
General Purpose Solenoid Valve
PH8MV
Explosionproof Solenoid Valve
PH8MVF
90
27
187
10590
72
86
F1.5.ai
Cautions on Installation of Solenoid Valve for Jet / Brush Cleaning
1. Do not allow a sample solution to flow backward into the solenoid valve or to be replaced with the driving fluid.
For this take relevant measures; e.g. install a check valve to prevent inverse pressure between the inlet and outlet of the solenoid
valve, or install the solenoid valve higher than the holder, especially when using the air jet/brush cleaning system.
2. Make sure to avoid the risk of corrosion of the solenoid body (bronze) and seal (nitrilel rubber) by vapor or gaseous components
generated from a sample solution, especially when using the air jet/brush cleaning system.

< 2. Installation, Piping and Wiring > 2-1
IM 12B07M01-01E
2. Installation, Piping and Wiring
2.1 Installing the Holder
2.1.1 ShippingandCheckingtheSpecications
When shipping the PH8HS (or PH8HSF) Submersion Holders, they should be suitably packed to
avoid possible damage in transit. When you receive them, unpack them and check for visible signs of
damage.
2.1.2 Selecting the Holder Installation Site
Install the submersion type holder so the sensor is mounted in the correct position.
Install the holder in a site where: a typical measurement value is obtained and the holder can be easily
maintained.
Avoid an area where the measurement value varies signicantly as this can cause indicator hunting.
When selecting the holder installation site, rst check that the solution temperature and ow velocity
meet the sensor and holder specications, and also consider ease of maintenance.
CAUTION
Installation Location of Holders
The holder should be used in a place that is as vibration free as possible.
Using the holder in a place where it is affected by vibration, may result in damage to the holder.
2.1.3 InstallationProcedure
Pipe Mounting Submersion Type Holder
The submersion type holder can be installed on a rigid vertical 2-inch pipe (*1) vertically and mount a
40 mm arm pipe perpendicularly on as shown in Figure 2.1. Mount the holder assembly on the arm
pipe so the sensor can be submerged in the measurement solution correctly.
For the holder with cleaner (*2), install the cleaner holder on the arm pipe using a clamp. The holder
assembly should be mounted on the arm pipe.
Notes:
(*1) If there is a rigid vertical 2-inch pipe near the submersion type holder installation site, mount a
40 mm arm pipe perpendicular to it.
(2*) Do not submerge the holder assembly in the solution without sensor. If the holder assembly is
likely to become submerged in the solution, remove it from the stanchion. The cleaner holder
may be left on the pipe.
Flange Mounting Holder
The ange mounting submersion type holder is normally used with a xed ange. A ange to mate
with the holder ange should be provided by the user. When the mounting a submersion type holder,
no gasket is required between the ange. All bolts are not required, so determine the number of bolts
according to the condition of holder installation.
Observe Note (*2) above when installing the submersion type holder.

< 2. Installation, Piping and Wiring >
2-2
IM 12B07M01-01E
Pipe Mounting (without cleaner) When stainless bracket used
(specify option code /MS3 or /MS4)
Clamp
Cleaner Holder
Sensor Holder
Pipe Mounting (with cleaner) Flang Mounting Type F2.1.ai
Right-angled
Pipe Clamp
Sensor Holder
Arm Pipe
Sensor Holder
Sensor Holder Nut
Bracket
Flange
Fixing Bolt
Figure 2.1 Sensor Holder Replaceable Parts
2.2 Mounting the Sensor
For the sensor installation, refer to the relevant section of the sensor.
2.3 CleanerPiping
This section applies only to the submersion type holder with cleaner.
2.3.1 PipingPrecautions
(1) Provide a slight slack in a exible tubing between the cleaner and a mating device to allow ease
of maintenance.
(2) Determine the cleaner pipe size to allow sufcient ow and pressure. Use 15 mm pipe for air
cleaning piping. If the water/jet cleaner pipe or water/brush cleaner pipe is subject to freezing
temperature during winter, cover it with a suitable insulation material.
(3) Use a normally-open (opens when relay is energized) 15 mm diameter solenoid valve for the
cleaning line. The solenoid valve supplied by Yokogawa meets the following specications.