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Summary of Contents for EUTECH INSTRUMENTS ALPHA PH DIFFERENTIAL PROBE
- Page 1 INSTRUCTION MANUAL ECFP21A1A1 Differential pH Sensor 1 ½ Inch NPT Mounting Threads Technology Made Easy ... 68X216866 Rev 0 10/04...
- Page 2 This instruction manual serves to explain the use of the ECFP21A1A1 1½ inch pH sensor and is written to cover as many applications as possible. Please do not hesitate to contact Eutech Instruments or an authorized representative with questions or concerns.
- Page 3 Safety Information The ECFP21A1A1 1½ inch pH sensor shall be installed and operated only in the manner specified. Only a skilled, trained or authorized person should carry out installation, setup and operation of the sensor system. Before using the sensor, make sure that the sensor cable is connected as specified. Failure to do so may result in permanent damage to the sensor or controller.
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Page 4: Table Of Contents
TABLE OF CONTENTS INTRODUCTION........................... 1 1.1........................1 ENERAL NFORMATION 1.2............................ 2 NTENDED USE PRODUCT DESCRIPTION ........................3 2.1......................... 3 ENSOR ESCRIPTION 2.2..........................4 PECIFICATIONS INSTALLATION............................ 5 3.1............................... 5 IRING 3.2........................6 OUNTING ARDWARE 3.2.1........................ -
Page 5: Introduction
Improper use could lead to hazards for the user or a third-party, and/or adverse effects to the plant or other equipment. Eutech Instruments does not accept any liability for damage that may arise if information in this manual is not followed. Therefore, the operating instructions and specifications must be read and understood by all persons involved in installation and operation of this equipment. -
Page 6: Intended Use
The ECFP21A1A1 1½ inch pH sensor should be installed and operated only by personnel familiar with the sensor and qualified for such work. A defective sensor should be returned to Eutech Instruments for repair or replacement. Contact Eutech Instruments to obtain a Return Goods Authorization (RGA) number. -
Page 7: Product Description
Instruction manuals ECFP21A1A1 2. PRODUCT DESCRIPTION 2.1. Sensor Description The ECFP21A1A1 1½ inch pH sensor uses a differential measurement technique to maximize lifetime in continuous industrial applications. The ground rod and encapsulated preamplifier construction reduce the effects of ground loops and allow the pH signals to be transmitted up to 3,000 feet. A replaceable heavy- duty quad junction salt bridge makes it simple to refurbish the sensor when necessary. -
Page 8: Specifications
The sensor will arrive with a protective cap that keeps the sensor hydrated. For short-term storage, put several drops of Eutech Instruments’ storage solution on the absorbent material in the protective cap and replace the cap on the sensor. This keeps the process electrode and salt bridge moist. -
Page 9: Installation
Instruction manuals ECFP21A1A1 3. INSTALLATION 3.1. Wiring Figure 3.1: pH Sensor Hook Up There are two different methods for electrical connection between the sensor and the pH controller; either direct or through a junction box. 3.1.1. Direct Connection 1. Use a watertight cord grip to insert the sensor cable into the Alpha pH2000D Controller. Conduit holes are found on the bottom of the Alpha pH2000D controller for this purpose. -
Page 10: Mounting Hardware
ECFP21A1A1 3.2. Mounting Hardware Eutech Instruments’ short nose sensor (Fig 3.2) has insertion threads located closer to the sensing elements and is recommended for short branch tees (typically metal tees and SCH 40 plastic tees). Save the protective cap and use it to keep electrodes moist whenever the sensor is removed from service. -
Page 11: Pipe Tee Mounting
ECFP21A1A1 3.2.1. Pipe Tee Mounting Eutech Instruments’ distinct body type for its 1½ inch differential pH sensor ensure optimal positioning of the active pH sensor electrode in the process flow. Normally available pipe tees vary widely in construction dimensions. CPVC pipe tees are most generally available with schedule 80 walls. - Page 12 Instruction manuals ECFP21A1A1 Acceptable Tee Mounting Configuration for Specific Applications The short nose sensor bodies can be installed in a variety of tee pipes but optimal electrode positioning may not be maintained. If the sensor body does not extend far enough it may be possible for an air pocket to form.
- Page 13 Instruction manuals ECFP21A1A1 Detailed Pipe Tee Installation Instructions Wiring: a. Route the cable – either through conduit or on a cable tray. b. Insert the sensor cable into the Alpha pH2000D controller through a watertight cord grip. Conduit holes are provided for the cord grip on the bottom of the Alpha pH2000D controller.
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Page 14: Immersion Mounting
Instruction manuals ECFP21A1A1 3.2.2. Immersion Mounting For immersion mounting applications the sensor is connected to a 1½ inch extension pipe to protect the cable from damage and to reduce the possibility of leaks that may damage the sensor. Figure 3.5: Immersion mounting assembly... - Page 15 Instruction manuals ECFP21A1A1 Detailed Insertion Mount Installation Instructions 1. Wiring: a. Route the sensor cable through the 1.5 inch extension pipe. b. Apply Teflon® tape to the sensor threads. c. Attach the sensor to the 1.5 inch NPT coupling by turning the sensor in a clockwise direction until secure.
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Page 16: Ph Sensor Maintenance
Instruction manuals ECFP21A1A1 4. pH SENSOR MAINTENANCE 4.1. Cleaning the pH Sensor Head 4.1.1. In order to maintain an accurate measurement value, the sensor will need occasional maintenance. The maintenance interval will be dictated by the process in which it is installed. The harsher the process, the more often the sensor will require maintenance. -
Page 17: Ph Sensor Refurbishment - Replacing The Salt Bridge And Reference Solution
Instruction manuals ECFP21A1A1 4.2. pH Sensor Refurbishment - Replacing the Salt Bridge and Reference Solution 4.2.1. If the sensor head has been cleaned (see section 4.1.2) and calibration cannot be achieved, replace the salt bridge and reference solution. 4.2.2. Hold the sensor firmly with the electrode tip facing upwards. -
Page 18: Ph Sensor Troubleshooting
Instruction manuals ECFP21A1A1 4.3. pH Sensor Troubleshooting General Inspection If the sensor is not providing reasonable signals to the analyzer, check the following: 1. Inspect the integrity of the glass electrodes. If the electrode is broken, replace the sensor. 2. Inspect the integrity of the salt bridge junctions. Be sure that they are clean and moist. If the salt bridge has been allowed to dry out it may be necessary to replace the salt bridge and filling solution. - Page 19 Instruction manuals ECFP21A1A1 pH Offset Test 1. Disconnect the RED and GREEN sensor wires from the analyzer terminal block while leaving the other wires connected. Connect the (+) lead of a millivolt meter to the RED wire and the (-) lead of the millivolt meter to the GREEN wire.
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Page 20: Ph Sensor Spare Parts And Accessories
Instruction manuals ECFP21A1A1 pH SENSOR SPARE PARTS and ACCESSORIES 5.1.1 Reference Cell Replacements Description • Reference Cell Solution (500 ml) • Protected PEEK Salt Bridge (O-ring included) ® • Flat PEEK Salt Bridge (O-ring included) ® • Protected CPVC Salt Bridge (O-ring included) •... -
Page 21: Mounting Hardware Replacements
Instruction manuals ECFP21A1A1 5.1.3 Mounting Hardware Replacements Immersion Mounting Assembly Description • Junction box • 1½” PVC pipe • 1½” PVC NPT coupling... -
Page 22: Warranty
If repair or adjustment is necessary and has not been the result of abuse or misuse within the designated period, please return – freight pre-paid – and correction will be made without charge. Eutech Instruments will determine if the product problem is due to deviations or customer misuse. -
Page 23: Return Of Items
For your protection, items must be carefully packed to prevent damage in shipment and insured against possible damage or loss. Eutech Instruments will not be responsible for damage resulting from careless or insufficient packing. A restocking charge will be made on all unauthorized returns. - Page 24 For more information on Eutech Instruments products, contact your nearest distributor or visit our website listed below: Eutech Instruments Pte Ltd Distributed by: Blk 55, Ayer Rajah Crescent, #04-16/24 Singapore 139949 Tel: (65) 6778 6876 Fax: (65) 6773 0836 E-mail: marketing@eutechinst.com...
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