YOKOGAWA PH8EFP User manual

User’s
Manual
Model PH8EFP
KCl Filling type pH Sensor
IM 12B7J1-01E
IM 12B7J1-01E
12th Edition

IM 12B7J1-01E
< Introduction > i
INTRODUCTION
This manual covers the PH8EFP KCl Filling type pH Sensor.
Other related items are described in the following manuals.
Model Title IM No.
PH8HG Guide-pipe Holder IM 12B7M2-01E
PH8HF, PH8HFF Flow-Through Type Holder IM 12B07N01-01E
PH8HS, PH8HSF Submersion Type Holder IM 12B07M01-01E
HH350G Well Bucket Type Holder IM 19H1B1-01E
PB350G Float Type Holder IM 19H1E1-01E
PB360G Vertical Type Float Holder IM 19H1E2-01E
FLXA402 4-Wire Converter IM 12A01F01-02EN
IM 12A01F02-01EN etc.
PH450G pH/ORP Converter IM 12B07C05-01E
PH202G, S pH/ORP Transmitter IM 12B07D02-01E
PH202SJ TIIS Intrinsic safe pH/ORP Transmitter IM 12B07D02-11E
FLXA202, FLXA21 2-Wire Liquid Analyzer IM 12A01A02-01E
WTB10-PH¨Terminal Box IM 19D01B01-01E
PH8TBG Terminal Box IM 12B07W01-01E
PH8AX Accessories for pH Meter IM 12B07W03-01E
SA11 SA11 Smart Adapter IM 1206S01-00EN-(P)
IM 1206S01-01Z1-(P)
nTrademark Acknowledgments
• FLEXA, FLXA, SENCOM and FieldMate are trademarks or registered trademarks of
Yokogawa Electric Corporation.
• All other 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 12B7J1-01E 12th Edition : Dec. 2018 (YK)
All Rights Reserved Copyright © 1996, Yokogawa Electric Corporation
12th Edition : Dec.14,2018-00

IM 12B7J1-01E
< Introduction > ii
For the safe use of this equipment
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.
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 safety symbols are used on the product as well as in this manual.
WARNING
This symbol indicates that an operator must follow the instructions laid out in this manual in order
to avoid the risks, for the human body, of injury, electric shock, or fatalities. The manual describes
what special care the operator must take to avoid such risks.
CAUTION
This symbol indicates that the operator must refer to the instructions in this manual in order to
prevent the instrument (hardware) or software from being damaged, or a system failure from
occurring.
CAUTION
This symbol gives information essential for understanding the operations and functions.
NOTE
This symbol indicates information that complements the present topic.
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.
12th Edition : Dec. 14,2018-00

IM 12B7J1-01E
< Introduction > iii
nCompliance with the simple apparatus requirements
PH8EFPmeetthesimpleapparatusrequirementsdenedinthefollowingstandards.
Note: TIIScertiedtypescannotbeconnected.
Use the sensors under the conditions of use required by the standards.
Applicable standards:
ANSI/ISA-60079-11 (2014)
ANSI/ISA-60079-0 (2009)
CAN/CSA-C22.2 NO. 60079-11:14
CAN/CSA-C22.2 NO. 60079-0:11
방호장치 의무안전인증 고시
GB 3836.4-2010
Conditions of use:
(1) Use in combination with an internally isolated transmitter, or use with, a transmitter in
combination with isolated barrier.
The FLXA21 is internally isolated.
(2) Upper limit of the process temperature.
The upper limit of process temperature is indicated below when the sensor is used in
combination with a YOKOGAWA transmitter.
ForFLXA21,modelandsu󰀩xcodebelowisavailable.
 FLXA21-D-□-D-EA-P1-○-A-N-LA-N-NN
 □canbeanyvalue.
 ○mustbeNNorP1.
Any option code is available.
ForPH202S,modelandsu󰀩xcodebelowisavailable.
 PH202S-○-E
 ○mustbeCorU.
There are no PH202S models that meet the Korean explosion proof standards.
Any option code is available.
Upper limit of process temperature on the PH8EFP
Transmitter used in
combination FLXA21 PH202S
Ambient temperature Ta
Temperature class 40°C 60°C 40°C 60°C
T6 16 16 28 28
T5 81 31 95 (*1) 43
T4 105 66 105 78
T3 105 105 105 105
T2 105 105 105 105
T1 105 105 105 105
*1: Care about upper limit 100°C of temperature class T5 should be taken.
12th Edition : Dec. 14,2018-00

IM 12B7J1-01E
< Introduction > iv
Other warnings are provided in the following.
WARNING
Handling precautions:
(1) Potential electrostatic charging hazard Electrostatic charge may cause an explosion hazard.
Avoid any actions that cause the generation of electrostatic charge, e.g., rubbing with a dry
cloth.
(2) With sensors that have a solution ground tip made of titanium (-TN), ignition sources due to
impact and friction sparks are excluded.
(3) IEC60079-14 (Electrical installations in hazardous areas) requires a label indicating ‘simple
apparatus’, stick this label to this sensor if necessary.
12th Edition : Dec. 14,2018-00

IM 12B7J1-01E
< Introduction > v
After-sales Warranty
nDo not modify the product.
nDuring 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
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
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 production ends. For repair for this product, please contact the
nearestsaleso󰀩cedescribedinthisinstructionmanual.
12th Edition : Dec. 14,2018-00

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IM 12B7J1-01E
< CONTENTS > vii
12th Edition : Dec.14,2018-00
Model PH8EFP
KCl Filling type pH Sensor
CONTENTS
IM 12B7J1-01E 12th Edition
INTRODUCTION.............................................................................................i
For the safe use of this equipment.............................................................ii
After-sales Warranty ....................................................................................v
1. Specication ............................................................................................. 1-1
1.1 StandardSpecications................................................................................... 1-1
1.2 ModelandSu󰀩xcodes.................................................................................... 1-3
1.3 External Dimensions ........................................................................................ 1-5
2. Installation................................................................................................. 2-1
2.1 Preparation for Installation .............................................................................. 2-1
2.1.1 Unpacking and Inspection ................................................................. 2-1
2.1.2 Mounting Glass Electrode.................................................................. 2-2
2.1.3 Mounting Liquid Junction ................................................................... 2-2
2.1.4 Installing Holder ................................................................................. 2-2
2.1.5 Installing Associated Instruments ...................................................... 2-2
2.2 Requirements for mounting the pH sensor ................................................... 2-3
2.2.1 In case of installing the PH8HG Guide-pipe Holder .......................... 2-3
2.2.2 Installing Sensor in PH8HS Submersion Holder ............................... 2-5
2.2.3 Installing Sensor in Flow-through Holder........................................... 2-8
2.3 pH Sensor Cable Wiring Procedure.............................................................. 2-11
2.3.1 Processing of Cable Inlet Hole......................................................... 2-11
2.3.2 Connecting Sensor Cable................................................................ 2-11
2.3.3 Connecting Sensor Cable to FLXA202/FLXA21 ............................. 2-12
2.3.4 Connecting Sensor Cable to Two-wire pH Transmitter ................... 2-12
2.3.5 Connecting Sensor Cable to FLXA402 ........................................... 2-13
3. Maintenance on operation....................................................................... 3-1
3.1 Operation and Periodic Maintenance ............................................................. 3-1
3.1.1 CalibratingpHSensorUsingBu󰀨erSolutions................................... 3-1
3.1.2 Pressurizing Reserve Tank ................................................................ 3-1
3.1.3 Replenishment of KCl Solution.......................................................... 3-1
3.1.4 Cleaning Glass Electrode and Liquid Junction.................................. 3-2
3.2 Replacing Consumable Parts.......................................................................... 3-3
3.2.1 Replacing Glass Electrode ................................................................ 3-3
3.2.2 Replacing Liquid Junction.................................................................. 3-3

IM 12B7J1-01E
< CONTENTS > viii
12th Edition : Dec.14,2018-00
3.2.3 Replacing O-rings for Glass Electrode .............................................. 3-3
Customer Maintenance Parts List...................................... CMPL 12B05J01-02E
Customer Maintenance Parts List...................................... CMPL 12B05J01-02E
Revision Information ...............................................................................................i

IM 12B7J1-01E
  <1.Specication> 1-1
1. Specication
TheModelPH8EFPKClllingtypepHSensorpermitsstablepHmeasurementevenfor
solutions having comparatively severe properties.
ThissensorcanbemountedoneitheranPH8HFow-throughholderoranPH8HSsubmersion
holder, or its can be used alone suspended in the solution (maximum depth 3 meters) depending
onthespecication.
1.1 StandardSpecications
Measurement: Hydrogen ion concentration (pH) of a solution
Measurement principle: Glass electrode method
Measuring range: 0 to 14 pH (see Table 1)
Installation: Mounting in PH8HS submersion holder
Mounting in PH8HG guide-pipe holder
   MountinginPH8HFow-throughholder
Note: Ifanyofthefollowingsolutionsaremeasured,installthesensoreitherinaow-throughorsubmersionholder.
• When the solution temperature exceeds 80°C.
• When the pH of the solution is 2 or less or 12 or greater.
• When a strong acid solution is to be measured
(e.g., aqua regia, chromic acid, hypochlorous acid or perchloric acid, etc.).
• When the solution contains corrosive gases
 (e.g.,ammonia,chlorine,hydrogensulde,etc).
• When the solution contains a small percentage of organic solvent or oil.
Solution temperature: -5 to 105°C
when mounted in PH8HG guid-pipe holder: -5 to 80°C
when mounted in PH8HS, PH8HF holder, see Table 1.
Table 1. Process Temperature Range
Holder Type Holder Material Cleaner Solution
pH Range
Solution
Temperature
(°C)
Guide-pipe
(PH8HG) (*4)
PVC None 2 to 12 -5 to 50
PP (*3) None -5 to 80
Submersion
(PH8HS)
PP (*2) )*3) None 0 to 14 -5 to 100
SS (*1) Provided -5 to 80
Flow-through
(PH8HF) (*2)
PP None,Provided -5 to 80
SS (*1) None -5 to 105
Provided -5 to 80
Suspension
(HH350G) (*4)
SS (*1) None,Provided -5 to 80
Float
(PB350G,PB360G)
(*4)
PP
SS (*1)
None -5 to 50
Note: PVC: Rigid Polyvinyl, PP: Polypropylene, SS: Stainless Steel:
*1 Stainless steel holder and Stainless steel adapter should be used when the pH value of the solution is pH3 or more acidic.
*2: Forow-throughtypes,referalsotothesolutiontemperatureandpressuregraph
 (innotesfollowingModelandSu󰀩xcodetableforow-throughtypeholders).
*3: The temperature of chemical cleaning is 0 to 50 °C.
*4: Cannot be used with pH sensors connected to Variopin connecter.
12th Edition : Dec.14,2018-00