ABB 9408 Series Instruction Manual
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ABB 9408 Series Instruction Manual

ABB 9408 Series Instruction Manual

Dissolved oxygen systems
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A B B M E A S U R E M E N T & A N A LY T I C S | I N S T R U C T I O N M A N U A L | I M/9 4 0 8 R E V. K
9408 series
Dissolved oxygen systems
Introduction
—
9408 series
Dissolved oxygen
The 9408 Series dissolved oxygen system comprises
systems
a flat-ended sensor mounted into a relatively large
diameter spherical flotation collar. This form of
construction presents to the sample a surface on
which it is difficult for rags and other large solids to
lodge. For more demanding applications, on-line
cleaning is available using the water wash option.
Measurement made easy
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  • Page 1 Measurement made easy Introduction — 9408 series Dissolved oxygen The 9408 Series dissolved oxygen system comprises systems a flat-ended sensor mounted into a relatively large diameter spherical flotation collar. This form of construction presents to the sample a surface on which it is difficult for rags and other large solids to lodge.
  • Page 2 For more information Further publications are available for free download from: www.abb.com/analytical or by scanning this code: Search for or click on 9408 series Dissolved oxygen systems DS/9408-EN Data Sheet...

  • Page 3: Table Of Contents

    2.4 Submersible System ...........3 1 INTRODUCTION 3 MECHANICAL INSTALLATION ....4 3.1 Assembling Kit Systems ........4 The ABB Model 9408 Floating Ball is a dissolved oxygen 3.1.1 Floating Ball ..........4 measuring system primarily for use in sewage treatment 3.1.2 Dip ............5 works where fouling of the dissolved oxygen sensor by rags 3.2 Installation ............6...

  • Page 4: System Types

    2 SYSTEM TYPES 2.1 Unpacking After carefully removing the 9408 system from its packing, check that the following systems include the associated items and that they are in good condition. 2.2 Floating Ball System 2.2.1 Assembled Version The system (9408 700 and 702) is fully assembled with a 3 metre boom except for the oxygen sensor capsule (8012 170). Dimensions are as shown in Fig.

  • Page 5: Dip Systems

    2 SYSTEM TYPES 2.3 Dip Systems 2.4 Submersible System – Fig. 2.4 2.3.1 Assembled Version – Fig. 2.2 Supplied with 10 metres of cable. 335 mm approx. 265 mm (Water wash approx. option) Ø40 mm Ø40 mm Oxygen Sensor Capsule Assembly Complete Oxygen Sensor Capsule Sealed System Complete...

  • Page 6: Mechanical Installation

    3 MECHANICAL INSTALLATION 3.1 Assembling Kit Systems 3.1.1 Floating Ball – Fig. 3.1 For installation of the assembled unit see Section 3.2.1 Floating Ball System. Information. Pipe requirement (user supplied): O.D. 50 mm, w.t. 3.3 mm (or 1 " N.B. Class E w.t. 4.5mm), pressure rating 10 bar+, and length to suit.

  • Page 7: Dip

    3 MECHANICAL INSTALLATION… 3.1.2 Dip – Fig. 3.2 For installation of the assembled unit see Section 3.2.2 Dip Systems. Information. Pipe requirement (user supplied): Note. There is no bracket supplied with this kit. O.D. 1.9", 1 " N.B., pressure rating 10Êbar+, and cut length to suit.

  • Page 8: Installation

    …3 MECHANICAL INSTALLATION 3.2 Installation Caution. The system is supplied with the temperature probe and a dummy oxygen capsule fitted into the oxygen sensor body which is in the ball assembly. Before securing the boom to the handrail bracket, unscrew the dummy capsule from the end of the oxygen sensor body and fit the oxygen sensor capsule to the sensor body –...

  • Page 9: Dip Systems

    3 MECHANICAL INSTALLATION… 3.2.2 Dip Systems – Fig. 3.4 Note. • The standard dip system is supplied with the temperature probe and oxygen sensor body fitted. Before fitting the dip tube to any bracket or fixing, remove the protective shroud, unscrew the dummy capsule from the end of the oxygen sensor body and fit the oxygen sensor capsule to the sensor body (see Section 5.1 Replacing the Oxygen Sensor Capsule) and replace the shroud.

  • Page 10: Water Supply For Water Wash Systems

    …3 MECHANICAL INSTALLATION 3.3 Water Supply for Water Wash Systems – Fig. 3.6 Note. For optimum performance of the Water Wash function in flow systems, the sample pressure should be Important Note. Installation must only be carried out in at least 2 bars lower than that of the water wash water accordance with the local water authority and council supply.

  • Page 11: Electrical Installation

    4 ELECTRICAL INSTALLATION 4.2 Calibrating the Sensor – Fig. 4.1 Caution. Cable should be of circular cross-section and The procedures for zero and span calibration are fully described of sufficient diameter to effect a seal inside the cable in the 4600 Series Transmitter Unit Operating Instructions, to glands.

  • Page 12: Maintenance

    5 MAINTENANCE 5.1 Replacing the Oxygen Sensor Capsule Storage — allow sensors to dry out, either in storage or in use. — leave sensors in vehicles where they are likely to freeze or be — use sensors in date rotation to prevent them being exposed to high temperatures.

  • Page 13: Dip Systems

    5 MAINTENANCE… 5.1.2 Dip Systems 4) Remove the self tap screw and pull off the end cap. The procedure is identical to that for the Floating Ball System except that, in this case, it is only necessary to remove and 5) Draw the cable through the gland.

  • Page 14: Submersible Systems

    6 SPECIFICATION …5 MAINTENANCE 5.2.3 Submersible Systems Sensor Type: ........8012-170 sensor capsule. Submersibles are sealed systems and apart from sensor Response: capsule replacement, no other maintenance is possible. Typically 20 seconds for 90% of a step change of oxygen concentration at 20°C.

  • Page 15: Spare Parts List

    7 SPARE PARTS LIST 7.1 Floating Ball System l l a l a i l a i Bracket assembly including optional Swivel Kit Table 7.1 Floating Ball Spares List Fig. 7.1 Floating Ball System 7.2 Dip System N . o N .

  • Page 16: Appendix A - Support Bracket Conversion

    APPENDIX A – SUPPORT BRACKET CONVERSION A1 Kit Parts List – Fig. A.1 A2 Conversion Procedure – Fig. A.2 1) Discard the upper 'U' bolts from the standard bracket. Table A.1 Contents of Conversion Kit 2) Assemble the items from the conversion kit shown in Table A.1 and Fig.
  • Page 17 NOTES...
  • Page 18 NOTES...
  • Page 19 Sales Service...
  • Page 20 We reserve the right to make technical changes or modify the contents of this document without prior notice. With regard to purchase orders, the agreed particulars shall prevail. ABB does not accept any responsibility whatsoever for potential errors or possible lack of information in this document.

This manual is also suitable for:

9408 7009408 702

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