Nivetec Thermo Scientific AquaSensors AnalogPlus User Manual

Dissolved oxygen sensor

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Thermo Scientific AquaSensors
AnalogPlus
Dissolved Oxygen
Sensor
User Guide

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Table of Contents
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Summary of Contents for Nivetec Thermo Scientific AquaSensors AnalogPlus

  • Page 1 Thermo Scientific AquaSensors ™ AnalogPlus ™ Dissolved Oxygen Sensor User Guide...
  • Page 2 Safety Information The Thermo Scientific AquaSensors AnalogPlus 1.0 inch Dissolved Oxygen 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.
  • Page 3: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION........................... 4 1.1........................4 ENERAL NFORMATION 1.2............................ 5 NTENDED USE PRODUCT DESCRIPTION ........................6 2.1......................... 6 ENSOR ESCRIPTION 2.2......................7 ENSOR ARE AND TART INSTALLATION............................ 9 3.1............................... 9 IRING 3.2........................10 ENSOR ONSTRUCTION 3.3.
  • Page 4: Introduction

    1. INTRODUCTION 1.1. General Information Thank you for purchasing the Thermo Scientific AquaSensors AnalogPlus Dissolved Oxygen Sensor. This industrial sensor has many enhanced features that offer superior performance in process applications. The product is designed for continuous use in industrial process applications and complies with safety regulations currently in force.
  • Page 5: Intended Use

    1.2. Intended use The Thermo Scientific AquaSensors AnalogPlus 1.0 inch Dissolved Oxygen sensor is designed to continuously measure Dissolved Oxygen and temperature in aqueous solutions in accordance with the technical product specifications in Section 2.2 of this manual. Any other use, or use not mentioned here, that is incompatible with the technical specifications is deemed inappropriate.
  • Page 6: Product Description

    2. PRODUCT DESCRIPTION 2.1. Sensor Description The Thermo Scientific AquaSensors 1- inch Dissolved Oxygen sensor uses the amperometric measurement technique to maximize lifetime in continuous industrial applications. The sensor is easily maintained and reconditioned by replacing the convenient membrane cap and electrolyte. The wires in the sensor cable are color coded to allow for quick and easy installation into the AV88 Universal Analyzer.
  • Page 7: Sensor Care And Start-Up

    2.2. Sensor Care and Start-up Working with the Protective Cap The sensor is shipped with a protective cap on the sensor head to keep the membrane wet and to protect the membrane from damage. The cap should remain on the sensor head until the sensor is installed in liquid process.
  • Page 8 Specifications Wetted Materials……………………………. Sensor Body – PEEK® Membrane – FEP O-Ring Seals - Viton® (Consult factory for customized material construction) Operating Temperature…………………….. 23°F to 122°F (-5°C to 50°C) Maximum Pressure…………………………. 100 psi @ 50°F Max Operating Pressure…………………… 20 psi @ 50°F Maximum Flow Rate………………………...
  • Page 9: Installation

    3. INSTALLATION 3.1. Wiring Yellow Wire (Temperature) Black Wire (Ground) Red Wire (Sense) Green Wire (Drive) Blue Wire (+V) White Wire (-V) Drain/Shield (Earth) Figure 3.1: D.O. Sensor Hook-Up There are two different methods for electrical connection between the sensor and the Dissolved Oxygen Analyzer - either direct or through a junction box.
  • Page 10: Sensor Construction

    3.2. Sensor Construction The AnalogPlus Dissolved Oxygen sensor has 1-inch NPT threads on the front and back of the sensor body for easy installation in tee, union mount and immersion mount hardware. Save the protective cap and use it to keep membrane moist whenever the sensor is removed from service.
  • Page 11: Side Wall Immersion Mounting

    3.3. Side Wall Immersion Mounting Standard immersion mounting hardware is used to rigidly mount a sensor on the sidewall of a vessel. It is usually secured with U-bolts (customer supplied). The mounting assembly consists of a seven-foot pole with an integral junction box. Different pole lengths can be configured on request. To remove the sensor, the hardware must be lifted out of the tank and laid down on the walkway.
  • Page 12: Immersion Mount With Hand Rail Swivel Positioning

    3.4. Immersion Mount with Hand Rail Swivel Positioning Standard immersion mounting hardware with handrail swivel positioning is used to rigidly mount a sensor away from the sidewall of a vessel near the surface of the water. The sensor should be positioned in such a way that the sensor head is angled away from water flow (not into it).
  • Page 13 The swivel hardware makes it easy to access the sensor head for service, cleaning and calibration as shown below. Figure 3.5: Immersion Mount Hardware with Hand Rail Swivel Positioning - Retracted ™ ™ Thermo Scientific AquaSensors AnalogPlus Dissolved Oxygen Sensor (ppm) User Guide...
  • Page 14: Immersion Mount With Ball Float

    3.5. Immersion Mount with Ball Float Standard immersion mounting hardware with a ball float is used to position a sensor at a fixed level below the surface of the water. The swivel hardware is left unlocked so that it can move up or down as the level of the water changes.
  • Page 15 The swivel hardware makes it easy to access the sensor head and the ball float for service, cleaning and calibration as shown below. Figure 3.7: Immersion Mount Hardware with Ball Float – Retracted. ™ ™ Thermo Scientific AquaSensors AnalogPlus Dissolved Oxygen Sensor (ppm) User Guide...
  • Page 16 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 1.0 inch NPT reducing coupling by turning the sensor in a clockwise direction until secure.
  • Page 17: Pipe Tee Mounting

    3.6. Pipe Tee Mounting Normally available pipe tees vary widely in construction dimensions. CPVC pipe tees are most generally available with schedule 80 walls. Stainless steel tees have thinner walls that change the final position of the sensor. Common mounting with a CPVC pipe tee is shown. Dimensions: IN (mm) Figure 3.8: Schedule 80 PVC Tee ™...
  • Page 18 Detailed Pipe Tee Installation Instructions 1. Wiring: a. Route the cable either through conduit or on a cable tray. b. Insert the sensor cable into the AV88 Universal Analyzer through a watertight cord grip. Conduit holes are provided for the cord grip on the bottom of the AV88 Universal Analyzer.
  • Page 19: Union Mounting

    3.7. Union Mounting Union mount hardware makes it easy to remove and insert the sensor for applications where calibration and/or cleaning is frequent. In pipe installations a ‘Y’ configuration is recommended to reduce the impact of particulate matter on the sensor head and improve sensor life. Union Mounting in a ‘T’...
  • Page 20 Detailed Union Mount Installation Instructions 1. Wiring: a. Apply Teflon® tape to the rear sensor body threads and pass the cable through the adapter. Thread the adapter onto the sensor clockwise until it is secure. b. Pass the union collar over the cable and onto the adapter with the threads facing the sensor.
  • Page 21: Dissolved Oxygen Sensor Maintenance

    4. Dissolved Oxygen Sensor Maintenance 4.1. Cleaning the Dissolved Oxygen 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 22: Sensor Refurbishment - Replacing The Membrane Cap And Electrolyte

    4.2. D. O. Sensor Refurbishment - Replacing the Membrane Cap and Electrolyte 4.2.1. If the sensor head has been cleaned (see section 4.1.2) and calibration cannot be achieved, replace the membrane cap and electrolyte solution. 4.2.2. Hold the sensor firmly with the electrode tip facing down.
  • Page 23: Dissolved Oxygen Sensor Troubleshooting

    4.3. Dissolved Oxygen Sensor Troubleshooting General Inspection If the sensor is not providing reasonable signals to the analyzer, check the following: 1. Inspect the integrity of the membrane. If the membrane is torn or punctured, replace it a new membrane cap and fresh electrolyte (see section 4.2).
  • Page 24: Dissolved Oxygen Part Numbers

    5. Dissolved Oxygen Part Numbers 5.1. D.O. Sensor, AV88 Universal Analyzer and Mounting Hardware Options Model Number Dissolved Oxygen (ppm) Sensor in 1-inch PEEK® body. Cable connects to any AV88 Universal Analyzer. NPT mounting. Integral temperature. Replaceable membrane cap. Reserved Category Reserved Category Sensor Tip Options Protected membrane (Standard)
  • Page 25: Electrolyte And Membrane Caps

    5.2. D.O. Electrolyte and Membrane Caps Product Description Part Number Solutions ppm Electrolyte Electrolyte in the PPM range – 60ml bottle RDOK1 ppb Electrolyte Electrolyte in the PPB range – 60ml bottle RDOK3 Membrane Caps (ppm) Protected Cap Protected cap with pre-stretched membrane DMR03 Flat Cap Process Flat cap with pre-stretched membrane...
  • Page 26: Limited Warranty

    6. Limited Warranty Dissolved Oxygen SENSOR WARRANTY/REPLACEMENT PLAN Thermo Fisher Scientific warrants its AnalogPlus 1.0 Inch Dissolved Oxygen sensors against material and workmanship defect for a period of one year from the date of shipment in accordance with the following prorated schedule: In the event that a defect is discovered during the warranty period, Thermo Fisher Scientific agrees, at its option, to repair or replace the defective product according to the proration schedule listed in this limited warranty.
  • Page 27: Terms And Conditions

    7. Terms and Conditions Terms and Conditions of Sale The following terms and conditions will be presumed acceptable unless changes are made in writing and accepted by both parties in a reasonable amount of time. Any standard or boilerplate terms and conditions supplied with a written purchase order will not be applicable unless accepted in writing by both parties.
  • Page 28 258473-001 Rev. A 01-09...

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