7777D In-Line Mounting for Durafet II ph Electrodes Installation and Maintenance

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1 7777D In-Line Mounting for Durafet II ph Electrodes Installation and Maintenance Rev. 0 3/07 Honeywell Process Solutions Industrial Measurement and Control

2 Copyright, Notices, and Trademarks Printed in U.S.A. Copyright 2007 by Honeywell Revision 0 March 2007 WARRANTY/REMEDY Honeywell warrants goods of its manufacture as being free of defective materials and faulty workmanship. Contact your local sales office for warranty information. If warranted goods are returned to Honeywell during the period of coverage, Honeywell will repair or replace without charge those items it finds defective. The foregoing is Buyer's sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose. Specifications may change without notice. The information we supply is believed to be accurate and reliable as of this printing. However, we assume no responsibility for its use. While we provide application assistance personally, through our literature and the Honeywell web site, it is up to the customer to determine the suitability of the product in the application. Honeywell Process Solutions Industrial Measurement and Control 512 Virginia Drive Fort Washington, PA Durafet II is a trademark of Honeywell Hastelloy is a trademark of Haynes International, Inc Teflon is a trademark of E. I. DuPont De Nemours & Company, Inc. Other brand or product names are trademarks of their respective owners. ii 7777D In-Line Mounting Installation and Maintenance 3/07

3 About This Document Abstract This manual provides in-line installation instructions for Durafet II ph Electrodes as part of a 7777D electrode assembly. Contacts World Wide Web The following lists Honeywell s World Wide Web sites that will be of interest to our customers. Honeywell Organization Corporate Industrial Measurement and Control Technical Tips WWW Address (URL) Telephone Contact us by telephone at the numbers listed below. Organization Phone Number United States and Canada Honeywell Tech. Support Service 3/ D In-Line Mounting Installation and Maintenance iii

4 Symbol Definitions The following table lists those symbols used in this document to denote certain conditions. Symbol Definition This CAUTION symbol on the equipment refers the user to the Product Manual for additional information. This symbol appears next to required information in the manual. WARNING PERSONAL INJURY: Risk of electrical shock. This symbol warns the user of a potential shock hazard where HAZARDOUS LIVE voltages greater than 30 Vrms, 42.4 Vpeak, or 60 Vdc may be accessible. Failure to comply with these instructions could result in death or serious injury. ATTENTION, Electrostatic Discharge (ESD) hazards. Observe precautions for handling electrostatic sensitive devices Protective Earth (PE) terminal. Provided for connection of the protective earth (green or green/yellow) supply system conductor. Functional earth terminal. Used for non-safety purposes such as noise immunity improvement. NOTE: This connection shall be bonded to protective earth at the source of supply in accordance with national local electrical code requirements. Earth Ground. Functional earth connection. NOTE: This connection shall be bonded to Protective earth at the source of supply in accordance with national and local electrical code requirements. Chassis Ground. Identifies a connection to the chassis or frame of the equipment shall be bonded to Protective Earth at the source of supply in accordance with national and local electrical code requirements. iv 7777D In-Line Mounting Installation and Maintenance 3/07

5 Contents 1. INTRODUCTION Overview Description About This Manual SPECIFICATIONS Physical Pressure and Temperature Limits Model Selection Guide Series 777D Durafet II Electrode GENERAL ASSEMBLY INSTRUCTIONS Selecting Materials of Construction Sealing Pipe Joints Durafet II Electrode Preparation Cap Adapter Option for Durafet II Electrodes Overview of Assembly ELECTRODE CABLE CONNECTIONS Possible System Configurations Electrode Cables Cabling Procedure CONNECTING A DURAFET II ELECTRODE TO A UDA2182 ANALYZER (DIRECT CONNECTION) CONNECTING A CAP ADAPTER Cap Adapter Connection to a UDA2182 Analyzer Connection to an APT Series ph Transmitters and Analyzers IN-LINE MOUNTING General Information MAINTENANCE, STANDARDIZATION, AND REPLACEMENT PARTS Maintenance Standardization Replacement and Accessory Parts / D In-Line Mounting Installation and Maintenance v

6 Tables Table 3-1 Installation Tasks for In-Line Electrode 5 Figures Figure 5-1 Terminal Designations for Durafet II Electrode 8 Figure 6-1 Terminal Designations for Durafet II Electrode with Cap Adapter 9 Figure 6-2 Connecting to an APT2000 ph Transmitter 10 Figure 6-3 Connecting to an APT4000 ph Analyzer 10 Figure 7-1 Proper Mounting Angle for Electrode 12 vi 7777D In-Line Mounting Installation and Maintenance 3/07

7 1. Introduction 1.1 Overview The 7777D Series of electrode mountings enables a user to interface a Durafet II ph electrode to a process by mounting it into a ¾ threaded tee connection. Honeywell's Durafet II Series of industrial electrodes have been designed to provide accurate and stable ph measurements for a wide variety of industrial applications. The Durafet II ph electrode is a non-glass ph electrode. The ph measurement is based in ISFET (Ion Selective Field Effect Transistor) technology, which results in a solid state ph sensing electrode. The Durafet ph electrode is much more rugged than the traditional glass ph electrode. The sturdy ph electrode reduces replacement and inventory costs. The solid state sensing element is packaged in a durable Ryton body that results in a ph electrode that has extended life in a wide variety of process conditions. The ISFET technology also produces an electrode that is up to 10 times faster than glass electrodes. This fast response improves product quality and provides better process control to optimize chemical usage. For Immersion applications use the Durafet III ph electrodes. 1.2 Description Durafet II ph electrodes for the 7777D Series are designed to meet various customer application and installation needs. The electrode body is 1 in diameter with ¾ threads at both ends of the electrode. For in-line applications the electrode is threaded into one leg of a pipe tee. A temperature sensor is mounted internal to the electrode to measure process temperature and provide a temperature signal for automatic (Nernstian) temperature compensation. Two temperature sensors are available: 8550 ohm thermistor and 1000 ohm RTD. The electrodes come with a connector with a separate cable for in-line installations. Various cable length options are selected based on installation requirements. The Durafet II ph electrode is compatible with various ph instrumentation: Honeywell UDA2182 Universal Dual Analyzers. (Direct connection or with Cap Adapter) APT2000/4000 Transmitter/Analyzer with Cap Adapter. Non-Honeywell instruments with Cap Adapter. Consult your Honeywell sales representative for a list of instruments with this compatibility. 1.3 About This Manual This manual is part of a set documenting installation and use of the 7777D Durafet II ph Electrodes. The set consists of the following manuals. This manual Instruction Manual Durafet II Industrial ph Electrode Series Instruction manual for the ph instrument 3/ D In-Line Mounting Installation and Maintenance 1

8 2..Specifications 2.1 Physical Materials in contact with process solution Dimensions Electrode: Polyphenylene sulfide (PPS) body, silicon sensor, Viton seal, ceramic junction, EPM O Rings. Electrode Models: 2.5 cm (1 in.) diameter, 17.1 cm (6.75 in.) long 2.2 Pressure and Temperature Limits Temperature Pressure Electrodes: See manual supplied with the electrodes. Cap Adapter: 0 C to 70 C (32 F to 158 F) Electrodes: See manual supplied with the electrodes. Cap Adapter: 10 psig D In-Line Mounting Installation and Maintenance 3/07

9 2.3 Model Selection Guide Series 7777D Durafet II Electrode Instructions Select the desired Key Number. The arrow to the right marks the selection available. Make one selection each per table using the column below the proper arrow. A dot ( ) denotes unrestricted availability. Key Number I II III _, KEY NUMBER Selection Availability Description 7777 Durafet II Electrode Mounting 07777D TABLE I - Mounting Type, Temperature Sensor, Part No. Mounting Temperature Sensor Reference Fill Electrode P/N Immersion Use Durafet III (MSG# ) for all immersion applications. In-Line 8550 Ohm Thermistor KCl Ohm RTD KCl TABLE II - Instrumentation to Sensor Cables Selection Cable Length Cable Type Part Number None feet (6,10 meters) Cap Adapter feet (15,24 meters) Cap Adapter feet (6,10 meters) UDA2182 (Direct Input) feet (15,24 meters) UDA2182 (Direct Input) TABLE III - Options Tagging Linen Customer I.D. Tag L (limit to 3 lines, 22 spaces per line) Stainless Steel Customer I.D. Tag S (limit to 3 lines, 22 spaces per line) Certificate of Yes 10 Calibration 3/ D In-Line Mounting Installation and Maintenance 3

10 3. General Assembly Instructions 3.1 Selecting Materials of Construction Preamplifier and electrode The materials used in the construction of the electrode are listed in the specifications. Materials of wetted parts must be compatible with the process temperature and corrosion conditions. User-supplied components Pipe couplings, and tees must be supplied by the user. Select materials that are compatible with the process temperature and corrosion conditions. 3.2 Sealing Pipe Joints When making pipe joints apply Teflon tape pipe sealant to male threads. Wrap the threads with the tape overlapping by 50% on each wrap. Start the wrap at the end of the pipe and wrap in the direction of the thread at least two turns. When installing an electrode, apply Teflon tape to the threads, then hand-tighten the electrode in the fitting only until snug. If necessary to stop a leak, a wrench may be applied to the electrode s wrenching flats to further tighten the joint only until the leak has stopped. Always leave at least one thread on the electrode showing outside the fitting. CAUTION When tightening an electrode never exceed 15 ft-lb applied torque. Applying too much torque can result in damage to the electrode. 3.3 Durafet II Electrode Preparation Prepare Durafet II electrode as described in the electrode manual, part number CAUTION Before using the Durafet II ph electrode, the cable must be connected to the electrode and it must be allowed to warm up for at least 10 minutes. 3.4 Cap Adapter Option for Durafet II Electrodes The Cap Adapter option for Durafet II electrodes eliminates the need to separately mount a preamplifier. The Cap Adapter is a preamplifier electronics module that is integral with the electrode-to-instrument cable. The preamplifier PCA is molded into the cap of the quick-disconnect connector. The cable has tinned leads that are ready to be wired directly to a UDA2182 Analyzer or APT2000/4000 Transmitter. The Cap Adapter mounts directly on the Durafet II electrode. The electrode has a key that mates with the keyway in the connector on the cable. The cap is then threaded onto the electrode. The cap should be handtightened and engage the O-ring at the top of the electrode. The knurled fitting at the top of the cap should be hand-tightened to seal an internal O-ring around the cable. When properly threaded onto the electrode the connection is waterproof D In-Line Mounting Installation and Maintenance 3/07

11 3.5 Overview of Assembly Instructions for unpacking, preparing, and maintaining the electrodes are in the manual supplied with the electrodes. Instructions for cabling the electrode directly to the instrument are in Section 5 of this manual. Instructions for connecting a Cap Adapter to an instrument are in Section 6. The recommended configuration for in-line mounting of electrodes is described in Section 7 of this manual. Installation tasks Table 3-1 lists the tasks required for in-line mounting of electrodes. Step Table 3-1 Installation Tasks for In-Line Electrode Action 1 Read the general information about in-line mounting at the beginning of Section 7. 2 Select an appropriate location and install the required pipe tee. 3 Obtain the required materials listed in Section Thread electrode into pipe tee. 5 Connect the electrode cable to the electrode as described in Section 4. 6 Connect the electrode cable directly to the analyzer as described in Section 5 or Section 6 for the Cap Adapter. 3/ D In-Line Mounting Installation and Maintenance 5

12 4. Electrode Cable Connections 4.1 Possible System Configurations Variety of applications The Durafet II electrode can be cabled to: Directly to the input terminals of a UDA2182 analyzer To the UDA2182 (preamp input option) or APT2000/4000 transmitter when the Cap adapter is specified. 4.2 Electrode Cables The Durafet II ph electrode are supplied with a connector at the electrode top to provide a quick disconnect for easy electrode replacement. Cable connectors The electrode cable terminates with an edge metal connector on one end and tinned leads at the UDA2182 analyzer end. Cap Adapter cables have tinned leads at the analyzer end. The edge connector mates with the Durafet II electrode. Avoid contamination The connectors are constructed with high resistance insulating material which can be contaminated if exposed to oil and salts from bare hands. Avoid contaminating the internal area of the connectors. CAUTION Do not allow liquids or other foreign matter to contact the cable connectors. Save the protective cap supplied with electrodes with connectors and put the cap on the connector whenever the cable is not installed on an electrode. How to clean the connectors The connectors can be cleaned by wiping with a cotton swab moistened with isopropyl or grain alcohol. Allow connectors to dry completely before making connections. 4.3 Cabling Procedure How to attach the cable to the electrode Remove the protective cap from the cable. Loosen the ferrule and slide back the ferrule, small o-ring, and plastic cover to expose the cable connector. Align the cable connector keyway with the electrode key (small black tab on the top of the electrode). Slide the plastic cover over the electrode end and hand-tighten the cover on to the electrode D In-Line Mounting Installation and Maintenance 3/07

13 ATTENTION Make sure the o-ring on the electrode is seated on the shoulder of the electrode, below the threads. CAUTION Be careful not to cross the threads on the connector. Slide the o-ring and ferrule down the cable to the back of the cover cap. Hand-tighten the ferrule onto the cover cap. How to remove cable from electrode Loosen the ferrule from the cover cap and slide the ferrule and o-ring back on the cable. Loosen the cover cap and slide back on the cable. Pull the cable connector off the electrode. CAUTION Keep cable connector and edge connector of the electrode clean and free from contamination. Put protective caps that are supplied with the electrode and cable back in place while they are disconnected. 3/ D In-Line Mounting Installation and Maintenance 7

14 5. Connecting a Durafet II Electrode Directly to a UDA2182 Analyzer (Direct Input No Cap Adapter) Cable shield (yellow) to chassis ground screw Wire Color Green Green with Black stripe Blue Orange Signal Name R KO res- (Low) R KO res- (High) Drain Source Red Black Substrate Reference 9 8 White with Black stripe Orange with Black stripe White Red with Black stripe Counter RTH 3 rd Wire RTH Low RTH High Remove pre-wired jumper at terminals 5 & Figure 5-1 Terminal Designations for Durafet II Electrode D In-Line Mounting Installation and Maintenance 3/07

15 6. Connecting a Cap Adapter 6.1 Cap Adapter The Cap Adapter is an integral part of the electrode cable. It is essentially a preamplifier that does not require separate mounting. The output from the Cap Adapter can be connected directly to a ph instrument. The Cap Adapter and cable for Durafet II electrodes are available in lengths of 20', and 50'. One end of the Cap Adapter cable is the mating connector to the edge connector of the Durafet II electrode. The other end of the cable terminates with tinned leads. The tinned leads connect to the input terminals of the ph instrument as described below. 6.2 Connection to a UDA2182 Analyzer The Cap Adapter is connected to a UDA2182 analyzer. The UDA2182 input card must be a preamp input type. Connect the tinned leads of the Cap Adapter cable as follows: Wire Color Blue Green Black Signal Name (+) Volt Supply (-) Volt Supply Supply Common 12 Orange 11 ph Input Signal Red Red with Black stripe White RTH 3 rd Wire RTH Low RTH High Remove pre-wired jumper at terminals 5 & 6 3 Cable shield (yellow) to chassis ground screw 2 1 Figure 6-1 Terminal Designations for Durafet II Electrode with Cap Adapter 3/ D In-Line Mounting Installation and Maintenance 9

16 6.3 Connection to an APT Series ph Transmitters and Analyzers The Cap Adapter can be connected to the APT2000 ph Transmitter. (See the APT2000 ph Transmitter Manual, part number , for more detailed description of the APT2000.) +3 V/0.5 ma GND -3 V/0.4 ma Do not connect + 4 to 20 ma _ T1 T2 N.C. Aux. el. Reference el. Meas. el BLUE BLACK GREEN WHITE RED/BK YELLOW WT/BK NOTE: Orange and Red wires are not typically connected. These should be clipped and electrically sealed to avoid possible contact with other conductors. Figure 6-2 Connecting to an APT2000 ph Transmitter The Cap Adapter can be connected to the APT4000 ph Analyzer. (See the APT4000 ph Analyzer Manual, part number , for more detailed description of the APT4000.) Figure 6-3 Connecting to an APT4000 ph Analyzer D In-Line Mounting Installation and Maintenance 3/07

17 7. In-Line Mounting 7.1 General Information Choice of pipe tee This mounting allows the electrode body to be inserted directly into a Schedule 40, 3/4 in. NPT metal pipe tee in a pipe line. The electrode will NOT fit into standard PLASTIC pipe tees. Use a metal tee or the special Honeywell schedule 80 CPVC 3/4 in. pipe tee, Honeywell part number Avoiding damage to the electrode The Durafet II electrode for in-line mounting has an exposed sensor. Exercise care when inserting or removing the electrode from the pipe tee to prevent damage to the sensor surface. Ensuring accurate temperature sensing When process temperature varies considerably from ambient temperature, insulate the entire Durafet II electrode body to ensure accurate process temperature sensing. Included in assembly Assemblies vary according to catalog number configuration ordered, but may include a Durafet II combination electrode, a cap adapter module, and connection cables. A description of the Durafet II catalog number is provided in Section 2. If no cap adapter is used, the electrode would be cabled directly to the instrument as described in Section 5. Orientation of electrode For reliable measurement, the electrode must be immersed in the process fluid. Therefore, orientation of the electrode vertical to the horizon is not recommended, as this orientation may prevent sufficient depth penetration to reliably immerse the sensor. The electrode mounting angle should be at least 45 degrees from vertical as shown in Figure 7-1. If solids are present in the process fluid, avoid angles exceeding 90 degrees from vertical to minimize accumulation of solids around the sensor. ATTENTION The ISFET die orientation in the pipe tee is determined by using the H in Honeywell on the electrode label. The ISFET die is lined up with the H on the label. 3/ D In-Line Mounting Installation and Maintenance 11

18 Figure 7-1 Proper Mounting Angle for Electrode D In-Line Mounting Installation and Maintenance 3/07

19 8. Maintenance, Standardization, and Replacement Parts 8.1 Maintenance Keeping electrode moist When an electrode is removed from the process for any reason, assure that it does not become dry and remain dry for more than a short period of time. The electrode may require more frequent maintenance if used in a batch treatment installation which leaves the electrode dry between batches, or if it is exposed to process fluids that leave a deposit on the surface of the sensor chip (measuring electrode) and reference electrode. The manual supplied with the electrode contains instructions for cleaning the electrode. Thoroughly rinse the electrode with water after any type of cleaning. In addition to periodic cleaning, other electrode maintenance includes electrode performance checks, and treatment for a clogged junction or severely dry electrode. CAUTION Read the manual (part number ) supplied with the electrode before attempting any maintenance procedures. Improper handling of the electrode can result in damage that will affect accuracy. 8.2 Standardization In addition to electrode maintenance, successful ph measurement relies on periodic standardizing of the measurement instrument and its electrode system. (This is required because all electrodes do not produce exactly the same potential in a solution of known ph. A periodic corrective adjustment eliminates any deviation from the standard value.) Establish regular intervals for standardizing according to conditions and experience. Procedures for standardizing are given in the measuring instrument instructions. CAUTION If the cable connection has to be disconnected to get the Durafet ph electrode out of its mounting, then it is necessary to allow the Durafet ph electrode to warm up for at least 10 minutes prior to beginning a calibration. 3/ D In-Line Mounting Installation and Maintenance 13

20 8.3 Replacement and Accessory Parts Durafet II electrode Description Standard Durafet II cables for UDA2182 Analyzer electrode cable, 6.10 m (20 ft) length electrode cable, m (50 ft) length Cap Adapter Durafet II cables 6.10 m (20 ft) length m (50 ft) length Teflon tape, 1/2 in. x 260 in. roll CPVC pipe tee, special dimension 3/4 in. NPT for in-line mounting ph Buffer Solutions (NIST Traceable) 4.01 ph 6.86 ph 9.18 ph Part Number See the electrode manual (part number ) (provided with every Catalog 7777) Gel Re-fill Kit Electrode Tip (Smooth) D In-Line Mounting Installation and Maintenance 3/07

22 Honeywell Process Solutions Industrial Measurement and Control 512 Virginia Drive Fort Washington, PA Rev Printed in USA

Model 7777DVP Immersion/In-Line Mounting for Durafet III ph Electrodes Installation and Maintenance Rev. 1 3/04

Model 7777DVP Immersion/In-Line Mounting for Durafet III ph Electrodes 70-82-25-116 Rev. 1 3/04 Industrial Measurement and Control Copyright, Notices, and Trademarks Printed in U.S.A. Copyright 2004 by