1 User s Manual Model PH8HF, PH8HFF Flow-Through Type Holder R 3rd Edition
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3 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 Refillable 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 Hydrofluoric 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 Refillable type OPR Sensor IM 12C04K01-01E OR8TBG Terminal Box IM 12C04W01-01E Media No. 3rd Edition : Oct (YK) All Rights Reserved Copyright 2004, Yokogawa Electric Corporation
4 ii <INTRODUCTION> For the safe use of this equipment 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 liability 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. 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 precautions 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 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. Warning 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.
5 <INTRODUCTION> iii Symbol Marks Throughout this user s manual, you will find several different types of symbols are used to identify different 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 identifies a source to be referred to.
6 iv <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 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 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 nearest sales office described in this instruction manual.
7 <CONTENTS> v Model PH8HF, PH8HFF Flow-Through Type Holder 3rd Edition CONTENTS INTRODUCTION...i For the safe use of this equipment...ii After-sales Warranty...iv 1. Specifications General Specifications PH8HF Flow-through Type Holder PH8HFF (Explosionproof Type) Model and Suffix codes Flow-Through Type Holder PH8HF Flow-Through Type Holder (Explosionproof Type) PH8HFF External Dimensions Installation, Piping and Wiring Holder Installation Installation Site Mounting the Flow-through Type Holder Process Piping Main Precautions for Piping Piping Procedure Installing the Sensor Cleaner Piping Piping Precautions Piping Procedure Installation of PH8PU1 Washer Pump and Water Tank Wiring Ultrasonic Oscillator Circuit Wiring Solenoid Valve Circuit Wiring Wiring for PH8PU1 Washer Pump and Tank Maintenance/Inspection Cleaning the Holder Inspecting the O-ring Seal Checking the Cleaning Element Jet Cleaning Element...3-2
8 vi <CONTENTS> Cleaning the Brush Ultrasonic Cleaning Element Maintenance of PH8PU1 Washer Pump and Tank Customer Maintenance Parts List...CMPL 12B05N01-01E Revision Information...i
9 1. Specifications The Model PH8HF flow-through type holder is used: To connect two pipes and provide a flow-through path between them. < 1. Specifications > 1-1 To mount a ph sensor; the sensor measures the ph of liquid flowing 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 Specifications PH8HF Flow-through 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 set of mounting hardware. (Note) Make sure the mounting pipe is firmly 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) Weight: O-ring; Fluoro-rubber (Viton) or Daielperfrow Mounting bracket; Stainless steel (equivalent to SUS304) Cleaning unit (wetted parts): Ultrasonic; Stainless steel (equivalent to SUS316), titanium or Hastelloy C Jet; Brush; Measuring temperature: Polypropylene Polypropylene, titanium (shaft), Rulon (bearings) Holder; Approx. 0.4 to 1.7 kg (polypropylene) Approx. 3 to 6.1 kg (stainless steel) Mounting bracket; Approx. 0.5 kg 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 specifications of the sensor. Measuring flow speed: 3 to 11 l/min (Note) The flow rate may be limited by the specifications of the sensor. Measuring pressure: Atmospheric pressure to 500 kpa (Note) The pressure may be limited by the specifications of the sensor.
10 1-2 < 1. Specifications > Utility required for cleaning unit: Utility Pressure (kpa) Flow rate Water jet 200 to Liquid pressure 5 to 20 l/min Water brush 100 to Liquid pressure 20 to 30 l/min Air jet 200 to Liquid pressure 100 to 300 Nl/min Air brush 150 to Liquid pressure 300 to 600 Nl/min (Note 1) Pressure and flow rate must be simultaneously satisfied at the holder inlet port. (Note 2) A large braid-reinforced tube of Ø22 x Ø15 is recommended for supply due to the flow rate 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: Mounting: General ph Sensors; PH8ERP, PH8EFP, PH8ERG, PH8EFG General ORP Sensors; OR8ERG, OR8EFG 2-inch pipe mounting vertical or horizontal with 1 set of mounting bracket. (Note) Make sure the mounting pipe is firmly installed. Cleaning method: Ultrasonic cleaning Material: Holder; Polypropylene or stainless steel (equivalent to SUS316) O-ring; Fluor-rubber (Viton) or Daielperfrow Mounting bracket; Stainless steel (equivalent to SUS304) Cleaning unit (wetted parts); Ultrasonic; Stainless steel (equivalent to SUS316), titanium or Hastelloy C Construction: TIIS (JIS) flameproof 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 Measuring temperature: -5 to 80 C (Note) The temperature may be limited by the specifications of the sensor. Measuring flow speed: 3 to 11 l/min (Note) The flow speed may be limited by the specifications of the sensor. Measuring pressure: Atmospheric pressure to 500 kpa (Note) The pressure may be limited by the specifications of the sensor.
11 < 1. Specifications > Model and Suffix codes Flow-Through Type Holder PH8HF * Model PH8HF Material -PP -S3 Process Connection ph Measuring System Cleaning System Cable Length for Ultrasonic Cleaning Connector for Jet or Brush Cleaning Style Code Options Suffix Code Option Code Description -JPT -NPT -J10 -A15 -T -NN -S3 -TN -HC -JT -BR -NN -C1 -C3 -C5 -C6 -C7 -C8 -C9 -JP -NP *A O-ring /MF1 /PF Flow-through type holder Polypropylene Stainless steel Refer to note below for selection. *1: General purpose (Normal ph 3 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. Notes:(1) 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). (2) Criteria for material selection (-PP or -S3) In general, polypropylene is recommended from the viewpoint of chemical resistance. However stainless steel is recomend in any of the following cases: * (a) The liquid contains organic reagent, oxidizing agents, etc.., which can attack polypropylene. Rc1 1 NPT female thread JIS 10K 25 FF flange Temperature (b) The temperature/pressure correlation of the process condition falls within the hatched 60 area of the diagram shown right. ( C) (c) The use of polypropylene is not reasonable from a viewpoint of strength or past 40 experience. (3) For stainless steel, normally a 3 to 14 ph value is recommended. ANSI Class FF flange equivalent (for polypropylene holder -PP) ANSI Class RF flange with serration (for SUS316 holder -S3) 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 1m 3m 5m 7m 10m 15m 20m Rc1/2 1/2 NPT Style A Mounting bracket (stainless steel) Daielperfrow (*4) 80 [Style: S2] Stainless Steel 20 Polypropylene (or Stainless Steel) Pressure (kpa) T1.2E.ai
12 1-4 < 1. Specifications > Flow-Through Type Holder (Explosionproof Type) PH8HFF *1: General purpose (Normal ph3 to 14) *2: For salt water *3: Foracid (Normal ph0 to 4) *4: Use PH8HF 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. Notes: (1) 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). * (2) Criteria for material selection (-PP or -S3) In general, polypropylene is recommended from the viewpoint of chemical resistance. However stainless steel is recomend in any of the following cases:* (a) The liquid contains organic reagent, oxidizing agents, etc., which can attack polypropylene. (b) The temperature/pressure correlation of the process condition falls within the hatched area of the diagram shown right. (c) The use of polypropylene is not reasonable from a viewpoint of strength or past experience. (3) For stainless steel, normally a 3 to 14 ph value is recommended. The stainless steel holder is recommended to be used in normal ph of 3 to ( C) 60 Temperature 40 Stainless Steel 20 Polypropylene (or Stainless Steel) [Style: S2] Model Suffix Code Option Code Description PH8HFF Flow-through type holder Material -PP Polypropylene -S3 Stainless Steel Refer to note below for selection. -JPT Rc1 Process Connection -NPT -J10 -A15 1 NPT female thread JIS 10K 25 FF flange ANSI Class FF flange equivalent (for polypropylene holder -PP) ANSI Class RF flange with serration (for SUS316 holder -S3) ph Measuring System -T Always -T Cleaning System (*4) -S3 (SUS316 transducer) (*1) (Ultrasonic cleaning -TN (Titanium transducer) (*2) only) -HC (Hastelloy C transducer) (*3) Explosion Protection Style Code -JS *A TIIS Flameproof (d2g4) Style A Special Mounting /MF1 Mounting bracket (stainless steel) Options Flameproof Packing /PG2 TIIS flameproof packing adapter 3/4 inch Tag Plate /SCT Stainless steel tag plate O-ring /PF Daielperfrow (*5) Pressure (kpa) T1.3E.ai CAUTION Select the material of wetted parts with careful consideration of process characteristics. Inappropriate selection may cause leakage of process fluids, which greatly affects facilities. Considerable care must be taken particularly in the case of strongly corrosive process fluid such as hydrochloric acid, sulfuric acid, hydrogen sulfide, and sodium hypochlorite. If you have any questions about the wetted part construction of the product, be sure to contact Yokogawa.
13 1.3 External Dimensions < 1. Specifications > PH8HF - PP - PT - T - NN - NN, PH8HF - S3 - PT - T - NN - NN UNIT: mm Øa (ph sensor) A Screw O-Ring Outlet Ød h 110±1 Inlet g 100±1 O-Ring Model and Code A Screw a d g h Weight PH8HF-PP-JPT-T-NN-NN PH8HF-PP-NPT-T-NN-NN PH8HF-S3-JPT-T-NN-NN PH8HF-S3-NPT-T-NN-NN Rc1 1NPT Rc1 1NPT Approx. 250 Approx. 250 Approx. 243 Approx. 243 Approx. 0.4kg Approx. 0.4kg Approx. 3kg Approx. 3kg Mounting Bracket (Option Code : /MF1) Weight : Approx. 0.5 kg Bracket (Thickness : 3.2) Mounting holes for holder 26 6-Ø10 holes ± Approx. 82 Approx B(O.D. 60.5) Pipe 70± Holes Dimension for Wall Mounting Figure 1.1 Flow-Through Type Holder
14 1-6 < 1. Specifications > 2. PH8HF - PP T - NN NN, PH8HF - S3-1 - T - NN - NN UNIT: mm Øa (ph sensor) 4-ØD hole Ød O-Ring Outlet ØB ØA h 110±1 E Inlet C g 150±1 O-Ring Model and Code A B C D E a d g h PH8HF-PP-J10-T-NN-NN 125 PH8HF-PP-A15-T-NN-NN 108 PH8HF-S3-J10-T-NN-NN 125 PH8HF-S3-A15-T-NN-NN Approx. 250 Approx. 250 Approx. 243 Approx. 243 Weight Approx. 0.6kg Approx. 0.6kg Approx. 5kg Approx. 5kg Mounting Bracket (Option Code : /MF1) Weight : Approx. 0.5 kg Bracket (Thickness : 3.2) Mounting holes for holder 26 6-Ø10 holes ± Approx. 82 Approx B(O.D. 60.5) Pipe 70± Holes Dimension for Wall Mounting Figure 1.2 Flow-Through Type Holder (with Flange)
15 < 1. Specifications > PH8HF - - PT - T - P, PH8HF T - - P UNIT: mm Øa (ph sensor) A Screw O-Ring Outlet Ød h 110±1 Inlet g k O-Ring Approx. 47 Rc 1/2 (Suffix Code : -JP) 100±1 Rc 1/2 NPT (Suffix Code : -NP) Model and Code A Screw a d g h k PH8HF-PP-JPT-T- - P PH8HF-S3-JPT-T- - P PH8HF-PP-NPT-T- - P PH8HF-S3-NPT-T- - P Rc1 Rc1 1NPT 1NPT Approx. 250 Approx. 245 Approx. 250 Approx Weight Approx. 1.4kg Approx. 4kg Approx. 1.4kg Approx. 4kg Øa (ph sensor) 4-ØD hole Ød O-Ring Outlet ØB ØA h 110±1 E Inlet C g k Approx. 47 O-Ring RC 1/2 (Suffix Code : -JP) 150±1 1/2 NPT (Suffix Code : -NP) Model and Code A B C D E a d g h k PH8HF-PP-J10-T- - P PH8HF-S3-J10-T- - P PH8HF-PP-A15-T- - P PH8HF-S3-A15-T- - P Approx. 250 Approx. 245 Approx. 250 Approx Weight Approx. 1.6kg Approx. 6kg Approx. 1.6kg Approx. 6kg Figure Flow-Through Type Holder (with Jet, Brush Cleaner) F1.2.1.ai
16 1-8 < 1. Specifications > 2.2 PH8HF - - PT - T - C, PH8HF T - - C UNIT: mm Øa (ph sensor) A Screw O-Ring Outlet Ød h 110±1 Inlet Cable length (I) (Code: C ) g 1m (C1) 3m (C3) 5m (C5) 7m (C6) 10m (C7) 15m (C8) 20m (C9) l k 100±1 Cable weigth; Approx. 0.1kg/m Mode and Code A Screw a d g h k PH8HF-PP-JPT-T- -C PH8HF-S3-JPT-T- -C PH8HF-PP-NPT-T- -C PH8HF-S3-NPT-T- -C Rc1 Rc1 1NPT 1NPT Approx. 250 Approx. 245 Approx. 250 Approx Weight Approx. 1.5kg Approx. 4.1kg Approx. 1.5kg Approx. 4.1kg Øa (ph sensor) 4-ØD hole Ød O-Ring Outlet ØB ØA h 110±1 E Inlet C Cable length (I) (Code: C ) g 1m (C1) 3m (C3) 5m (C5) 7m (C6) 10m (C7) 15m (C8) 20m (C9) Cable weigth; Approx. 0.1kg/m l k 150±1 Model and Code A B C D E a d g h k Weight PH8HF-PP-J10-T- -C PH8HF-S3-J10-T- -C PH8HF-PP-A15-T- -C PH8HF-S3-A15-T- -C Approx Approx Approx Approx Approx. 1.7kg Approx. 6.1kg Approx. 1.7kg Approx. 6.1kg Figure Flow-Through Type Holder (with Ultrasonic Cleaner) F1.2.2.ai
17 < 1. Specifications > PH8HFF - - PT - T - - JS UNIT: mm Øa b (ph sensor) O-Ring Ød c 74 Ø80 G 3/4(Wiring hole) h e A Screw Outlet 110±1 Inlet Ø21.7 Flameproof Packing Adaptor (Code : /PG2) g f Approx. 95 Approx ±1 Model and Code A Screw a b c d e f g h PH8HFF-PP-JPT-T- -JS PH8HFF-S3-JPT-T- -JS PH8HFF-PP-NPT-T- -JS PH8HFF-S3-NPT-T- -JS Rc1 Rc1 1NPT 1NPT Approx. 250 Approx. 245 Approx. 250 Approx. 245 Weight Approx. 3kg Approx. 5.6kg Approx. 3kg Approx. 5.6kg Mounting Bracket (Option Code : /MF1) Weight : Approx. 0.5 kg Bracket(Thickness : 3.2) Mounting holes for holder 26 6-Ø10 holes ± B(O.D. 60.5) Pipe Approx. 82 Approx ± Holes Dimension for Wall Mounting Figure 1.3 Flow-Through Type Holder (with Fameproof type Ultrasonic Cleaner)
18 1-10 < 1. Specifications > 4. PH8HFF T - - JS UNIT: mm Øa b (ph sensor) 4-ØD hole O-Ring Ød 28 c 74 G3/4 (Wiring hole) e Outlet ØB ØA 165 Ø80 h 110±1 E Inlet C g Ø21.7 Flameproof Packing Adaptor (Code : /PG2) f Approx. 231 Approx ±1 Model and Code A B C D E a b c d e f g h Weight PH8HFF-PP-J10-T- -JS 125 PH8HFF-S3-J10-T- -JS 125 PH8HFF-PP-A15-T- -JS 108 PH8HFF-S3-A15-T-- -JS Approx. 250 Approx. 3.2kg Approx. 245 Approx. 7.6kg Approx. 250 Approx. 3.2kg Approx. 245 Approx. 7.6kg Mounting Bracket (Option Code : /MF1) Weight : Approx. 0.5 kg Bracket (Thickness : 3.2) Mounting holes for holder 26 6-Ø10 holes ± B(O.D. 60.5) Pipe Approx. 82 Approx ± Holes Dimension for Wall Mounting Figure 1.4 Flow-Through Type Holder (with Fameproof type Ultrasonic Cleaner)
19 < 1. Specifications > Solenoid Valve UNIT: mm General Purpose Solenoid Valve PH8MV Explosionproof Solenoid Valve PH8MVF G1/ G1/ Rc1/ 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. F1.5.ai Figure 1.5 Solenoid Valve for Jet & Brush Cleaning
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21 < 2. Installation, Piping and Wiring > Installation, Piping and Wiring 2.1 Holder Installation Installation Site Install the flow-through type holder in a site where the holder can be easily maintained Mounting the Flow-through Type Holder When strong piping - e.g. process piping - is next to the holder, mount the holder on it as shown in Figure 2.1. When a polypropylene holder is used, be careful not to apply excessive force to it. Outlet Outlet Inlet Inlet Figure 2.1 Support by Process Piping F2.1E.ai If the process piping is not strong enough to mount the holder, use mounting hardware (available as option) to mount the holder on a vertical (or horizontal) pipe with sufficient strength as shown in Figure 2.2. The holder can be mounted on a bracket as shown in Figure 2.3 (remove unnecessary parts from the metal fittings). Sensor Mounting Nut Flow-Through Type Holder Stanchion Figure 2.2 Pipe Mounting F2.2E.ai
22 2-2 < 2. Installation, Piping and Wiring > Sensor Mounting Nut Flow-Through Type Holder Bracket 70 mm 2-M6 Figure 2.3 Bracket Mounting F2.3E.ai 2.2 Process Piping Piping (through which the process fluid flows) connected to the holder: The process piping should be installed as per specifications, and the temperature, pressure and flow rate of process fluid conforms to the specifications of the sensor and holder to be used. When a holder with jet or brush cleaning is used, the piping should be installed accordingly. You should also keep ease of maintenance and calibration with standard solution in mind when installing the piping Main Precautions for Piping (1) When a holder with jet or brush cleaning is used: The cleaning fluid (water or air) is at higher pressure than the process fluid. If you want to prevent water or air flowing up line, a check valve should be provided as shown in Figure 2.4. NOTE For safety s sake you should confirm that it is safe for the cleaning fluid to flow into the down-line piping. Flow Outlet Flow Inlet Check Valve Jet or Brush Cleaning Figure 2.4 Check Valve Installation F2.4E.ai
23 < 2. Installation, Piping and Wiring > 2-3 (2) When a polypropylene holder is used: Keep the temperature and pressure of the process fluid (pressure of the cleaning fluid for holders with jet or brush cleaning) within the range shown in Figure Stainless Steel 60 ( C) 40 Temperature 20 Polypropylene (or Stainless Steel) Pressure (kpa) Figure 2.5 F2.5E.ai Temperature and Pressure Diagram for Polypropylene Resin Holder (3) When a general use sensor with KCl, solution tank is used: The pressure of the process fluid inside the holder should not exceed the tank head pressure 10 kpa (0.1 kg/cm 2 G). General Type Reserve Tank Ht > Hm KCl Filling Type Sensor At Least 1 m KCl Head Pressure Ht Solution Head Pressure Hm Inlet Figure 2.6 Relationship between the Solution Pressure, Pressure and Reserve Tank Height F2.6E.ai
24 2-4 < 2. Installation, Piping and Wiring > (4) When a sensor with medium pressure KCl, solution tank is used: Provide stop valves in the up-line and down-line piping adjacent to the holder. Stop Valve Stop Valve Figure 2.7 Stop Valve Installation F2.7E.ai Piping Procedure Piping Materials: Use the materials shown below for the process piping adjacent to the flow-through type holder. Hard polyvinylchloride pipe Nominal diameter 25 mm Polypropylene pipe Nominal diameter 25 mm Wire rainforced soft polyvinylchloride pipe Nominal diameter 25 mm Stainless steel pipe (JIS G3459) SUS304 or SUS316 Nominal diameter 25 mm Piping Example: 1. The outlet tube should be as short as possible to expel the solution to atmosphere. 2. When a horizontal outlet tubing is long, a vertical tube (H) should also be long. H Flowmeter Flowmeter Figure 2.8 Sensor with General Type Reserve Tank F2.8E.ai
25 < 2. Installation, Piping and Wiring > Install stop valves upstream and downstream of the flow-through holder to allow ease of maintenance. 2. Install a check valve before the flow-through holder as necessary. Stop Valve Solenoid Valve Process Piping Flowmeter Check Valve Stop Valve Stop Valve Stop Valve Cleaning Piping Drain Piping Figure 2.9 When the Solution has a Pressure F2.9E.ai Flow-Through Holder Drain Pan Figure 2.10 F2.10E.ai Cleaning the Flow-Through Holder 2.3 Installing the Sensor Refer to the separate manual describing the sensor to be used. 2.4 Cleaner Piping This section applies only to the submersion type holder with cleaner Piping Precautions (1) Provide a slight slack in a flexible tubing between the cleaner and a mating device to allow ease of maintenance. (2) Determine the cleaner pipe size to allow sufficient flow and pressure. Use nominal 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) nominal 15 mm diameter solenoid valve for the cleaning line. The solenoid valve supplied by Yokogawa meets the following specifications.
26 2-6 < 2. Installation, Piping and Wiring > [Model PH8MV Solenoid Valve] Pilot kick operated, 2-port valve. Open when energized. Fluid: Operating Pressure: Normal tap water, industrial water, or air 0 to 1 MPa Forward (reverse) Pressure Resistance: 2 MPa Fluid Temperature: Water; 5 to 60 C, Air; 60 C or less Cv: 4.5 Process Connection: Rc 1/2 Power Supply: 100/110/200/220 V AC, 50/60 Hz Power Consumption: 10 W. Construction: Drip-proof JIS C0920 Material: Body; Bronze Sealing; Nitrile rubber Coil case and terminal box; Aluminum alloy, nylon (lid) Ambient Temperature: Maximum 50 C Cable Inlet Connection: G 1/2 Weight: Approx. 1 kg [Model PH8MVF Explosionproof Solenoid Valve] Pilot kick operated, 2-port valve. Open when energized. Fluid: Operating Pressure: Normal tap water, industrial water, or air to 1 MPa. Forward (reverse) Pressure Resistance: 1.5 MPa Fluid Temperature: 5 to 60 C, Air; 60 C or less. Cv: 3.1 Process Connection: Rc 1/2 Power Supply: 100V AC, 50/60 Hz., 110V AC, 60 Hz. 200V AC, 50/60 Hz., 220V AC, 60 Hz. Power Consumption: 10 W. Construction: TIIS flameproof (for d2g4 gas). Material: Body; Bronze. Seal; Nitrile rubber. Coil Case & Terminal Box; Aluminum alloy (AC2B). Ambient Temperature: Maximum 50 C Valve Seat Leakage: 400 Nml/min. (At air pressure 50 to 700 kpa ) Cable Inlet Connection: G 1/2 Mounting Position: Weight: Vertical mounting with coil in top. Approx. 3.3 kg.
27 < 2. Installation, Piping and Wiring > Piping Procedure (1) Air piping examples Solenoid Valve* 1 Drive Signal To Wash Cycle Timer Regulator Supply Air Nominal 15 mm Hard Pipe Pressure 200 kpa (2 kg/cm 2 ) Minimum Nominal 16 mm Wire-Reinforced Vinyl Tube* 2 Figure 2.11 Notes: *1 If corrosive gas is produced at the measuring site, consider using a corrosion-resistant solenoid valve. *2 If the solution temperature is high, use a high temperature resistant solenoid valve. F2.11E.ai Typical Brush/jet Cleaner Air Piping (2) Industrial water piping examples Solenoid Valve Drive Signal To Wash Cycle Timer Industrial Water Ball Valve Figure 2.12 Nominal 15 mm Hard Pipe Pressure 200 kpa (2 kg/cm 2 ) Minimum Nominal 16 mm Wire- Reinforced Vinyl Tube F2.12E.ai Industrial Water Piping for Typical Brush/Jet Cleaner (3) Tap water piping examples * Drive Signal To Wash Cycle Timer Float Valve Tap Water Nominal 16 mm Wire-Reinforced Vinyl Tube Check Valve Pump Cleaning Water Tank Drain Note: *: When using a Model PH8PU1 cleaner pump and tank, set the solution pressure to 10 kpa (0.1 kg/cm 2 ) or below. F2.13E.ai Figure 2.13 Tap Water Piping for Typical Brush/Jet Cleaner
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