YOKOGAWA PH8HF User manual

User’s
Manual Model PH8HF, PH8HFF
Flow-Through Type Holder
IM 12B07N01-01E
IM 12B07N01-01E
6th Edition

i
IM 12B07N01-01E
<INTRODUCTION>
INTRODUCTION
This manual covers the PH8HF, PH8HFF Flow-Through Type Holder. 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
PH4,OR4pH and ORP Sensors IM 12B10B00-01EN
FLXA202,FLXA21 2-Wire Liquid Analyzer IM 12A01A02-01E
PH201G*B Distributor IM 19B1E4-02E
FLXA402 4-Wire Converter IM 12A01F01-02EN
IM 12A01F02-01EN etc.
PH450G pH/ORP Converter IM 12B07C05-01E
PUS400G Ultrasonic Oscillator IM 19C1B3-01E
PH8USF, PH8AL Ultrasonic Oscillator (Explosionproof Type), Alarm Box IM 12B5U2-E
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 12B07N01-01E 6th Edition : Nov. 2018 (YK)
All Rights Reserved Copyright © 2004, Yokogawa Electric Corporation

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IM 12B07N01-01E
<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 pro-
vided by this instrument may be impaired.
• Be sure to use the spare parts approved by Yokogawa Electric Corporation (hereafter sim-
ply referred to as YOKOGAWA) when replacing parts or consumables.
• Modication of the product is strictly prohibited.
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 con-
sent 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 respon-
sibility 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.
nSignal Words
The following words are used in this manual.
CAUTION
This symbol gives information essential for understanding the operations and functions.
NOTE
This symbol indicates information that complements the present topic.

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IM 12B07N01-01E
<INTRODUCTION>
After-sales Warranty
n Do not modify the product.
n During the warranty period, for repair under warranty consult the local sales representative
or service o󰀩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.
• 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 Yokoga-
wa 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.
• Returned goods that have been in contact with process uids must be decontaminated and
disinfected prior to shipment. Goods should carry a certicate to this e󰀨ect, for the health
and safety of our employees. Material Safety Data sheets must be included for all compo-
nents of the process to which the sensor have been exposed.
n In the following cases, customer will be charged repair fee regardless of warranty 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 insu󰀩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 pro-
duction ends. For repair for this product, please contact the nearest sales o󰀩ce described in
this instruction manual.

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IM 12B07N01-01E
<CONTENTS>
Model PH8HF, PH8HFF
Flow-Through Type Holder
CONTENTS
IM 12B07N01-01E 6th Edition
INTRODUCTION.............................................................................................i
For the safe use of this equipment.............................................................ii
After-sales Warranty ...................................................................................iii
1. Specications ........................................................................................... 1-1
1.1 GeneralSpecications ..................................................................................... 1-1
1.1.1 PH8HF Flow-through Type Holder .................................................... 1-1
1.1.2 PH8HFF (Explosionproof Type) ........................................................ 1-2
1.2 ModelandSu󰀩xcodes.................................................................................... 1-3
1.2.1 Flow-Through Type Holder PH8HF ................................................... 1-3
1.2.2 Flow-Through Type Holder (Explosionproof Type) PH8HFF ............ 1-4
1.3 ExternalDimensions ........................................................................................ 1-5
2. Installation, Piping and Wiring................................................................ 2-1
2.1 Holder Installation............................................................................................. 2-1
2.1.1 Installation Site .................................................................................. 2-1
2.1.2 Mounting the Flow-through Type Holder ........................................... 2-1
2.2 Process Piping .................................................................................................. 2-2
2.2.1 Main Precautions for Piping............................................................... 2-2
2.2.2 Piping Procedure ............................................................................... 2-4
2.3 Installing the Sensor......................................................................................... 2-5
2.4 Cleaner Piping .................................................................................................. 2-5
2.4.1 Piping Precautions ............................................................................. 2-5
2.4.2 Piping Procedure ............................................................................... 2-7
2.4.3 Installation of PH8PU1 Washer Pump and Water Tank .................... 2-8
2.5 Wiring ................................................................................................................. 2-8
2.5.1 Ultrasonic Oscillator Circuit Wiring .................................................... 2-8
2.5.2 Solenoid Valve Circuit Wiring............................................................. 2-8
2.5.3 Wiring for PH8PU1 Washer Pump and Tank..................................... 2-9
3. Maintenance/Inspection .......................................................................... 3-1
3.1 Cleaning the Holder .......................................................................................... 3-1
3.1.1 Inspecting the O-ring Seal ................................................................ 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

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<CONTENTS>
3.2.3 Ultrasonic Cleaning Element ............................................................. 3-3
3.2.4 Maintenance of PH8PU1 Washer Pump and Tank .......................... 3-4
Customer Maintenance Parts List......................................CMPL 12B05N01-01E
Revision Information ...............................................................................................i

< 1. Specications > 1-1
IM 12B07N01-01E
1. Specications
The Model PH8HF¨ ow-through type holder is used:
• To connect two pipes and provide a “ow-through” path between them.
• To mount a pH sensor; the sensor measures the pH of liquid owing through the holder.
Holder versions with or without cleaning for the pH sensor - ultrasonic cleaning or air/water jet
cleaning - are available.
1.1 GeneralSpecications
1.1.1 PH8HF Flow-through Type Holder
Applicable sensors:
General pH Sensor PH8ERP, PH8EFP
PH4 Sensor PH4P, PH4PT,PH4F, PH4FT,PH4C, PH4CT
General ORP Sensor OR8ERG, OR8EFG
OR4 Sensor OR4P, OR4C
Note: An adapter is required when using PH4/OR4 sensor.
When using with PH4/OR4 sensor, 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 set of mounting hard bracket.
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 when using PH4/OR4 sensor.
Material:
Holder; Polypropylene or stainless steel(equivalent to SUS316)
O-ring; Fluoro rubber (FKM) or Peruoroelastomer (FFKM)
Mounting bracket: 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. 0.4 to 1.7 kg (polypropylene)
Approx. 3 to 6.1 kg (stainless steel)
Mounting bracket; Approx. 0.5 kg
Temperature range:
No Cleaning: -5 to 80 °C (polypropylene)
-5 to 105°C (stainless steel)
With Cleaning: -5 to 80°C
Note: The temperature may be limited by the specications of the sensor.
Flow rate: 3 to 11 L/min
Note: The ow rate may be limited by the specications of the sensor.
Pressure: Atmospheric pressure to 500 kPa
Note: The pressure may be limited by the specications of the sensor.

< 1. Specications >
1-2
IM 12B07N01-01E
Utility required for cleaning unit:Utility required for cleaning unit:
Type Pressure (kPa) Flow Ratee
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 150 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 PH8HFF(ExplosionproofType)
The holder is used only when using Ultrasonic cleaning system in the explosionproof area.
Use PH8HF when using no cleaning, jet cleaning or brush cleaning.
Applicable sensors:
General pH Sensor PH8ERP, PH8EFP
General ORP Sensor OR8ERG, OR8EFG
Mounting: 2-inch pipe mounting vertical or horizontal, with 1 set of mounting bracket.
Note: Make sure the mounting pipe is rmly installed.
Cleaning method: Ultrasonic cleaning
Material:
Holder; Polypropylene or stainless steel (equivalent to SUS316)
O-ring; Fluoro rubber (FKM) or Peruoroelastomer (FFKM)
Mounting bracket; Stainless steel (equivalent to SUS304)
Cleaning unit (wetted parts):
Ultrasonic; Stainless steel (equivalent to SUS316), titanium or Hastelloy C
Construction:
TIIS ameproof type (for d2G4 gas) Cable entrance port of terminal box; G 3/4
Weight:
Holder; Approx. 3 to 3.2 kg (polypropylene)
Approx. 5.6 to 7.6 kg (stainless steel)
Mounting bracket; Approx. 0.5 kg
Temperature range: -5 to 80°C
Note: The temperature may be limited by the specications of the sensor.
Flow rate: 3 to 11 L/min
Note: The ow rate may be limited by the specications of the sensor.
Pressure: Atmospheric pressure to 500 kPa
Note: The pressure may be limited by the specications of the sensor.

< 1. Specications > 1-3
IM 12B07N01-01E
1.2 ModelandSu󰀩xcodes
1.2.1 Flow-Through Type Holder PH8HF
Model Su󰀩xCode
Option Code
Description
PH8HF ................................................. ................ Flow-through type holder
Material (*7) -PP
-S3
-PV
-TN
................
................
................
................
Polypropylene (Refer to note below for selection)
Stainless steel
Heat-resistant PVC
Titanium
Process Connection -JPT
-NPT
-J10
-A15
................
................
................
................
Rc1
1 NPT female thread
JIS 10K 25 FF (*6)
ANSI Class 150 1 FF ange (for polypropylene holder -PP) (*6)
ANSI Class 150 1 RF ange with serration (for SUS316 holder -S3)
pH Measuring System -T ................ Always -T
Cleaning System -NN
-S3
-TN
-HC
-JT
-BR
................
................
................
................
................
................
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 specied separately
For brush cleaning. The solenoid valve must be specied separately
Cable Length for Ultrasonic Cleaning
Connector for Jet or Brush Cleaning
-NN
-C1
-C3
-C6
-C7
-C8
-C9
-JP
-NP
................
................
................
................
................
................
................
................
................
None
1m
3m
7m
10m
15m
20m
Rc1/2
1/2 NPT
Style Code *A ................... Style A
Option Special Mounting
O-ring
/MF1
/PF
Mounting bracket (stainless steel) (*5)
Peruoroelastomer (FFKM) (*4)
*1: General purpose (Normal pH 3 to 14)
*2: For salt water
*3: For acid (Normal pH 0 to 4)
*4: Choose Peruoroelastomer (FFKM) when this holder is used in organic solvent, high alkali or high temperature alkali.
*5: Mounting bracket is generally not required when the stainless steel holder is installed in-line in a pipe
It is required where the holder is installed in a sampling rack (in which case the U-bolt included in /MF1 in not used).
*6: Only mating dimensioms are according to ange standard.
*7: Criteria for material selection (-PP or -S3)
In general, polypropylene is recommended from the viewpoint of chemical resistance.
However stainless steel is recommend in any of the following cases:
• The liquid contains organic reagent, oxidizing agents, etc., which can attack polypropylene.
• The temperature/pressure correlation of the process condition falls within the hatched area of the diagram shown right.
• The use of polypropylene is not reasonable from a viewpoint of strength or past experience.
For stainless steel, normally a 3 to 14 pH value is recommended.
0 100
105
100
80
60
40
20 Polypropylene
(or Stainless Steel)
200 300
Pressure (kPa)
400 500
Stainless Steel
Temperature
(°C)