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Siemens LDS 6 Operating Instructions Manual

In-situ laser gas analyzer sensor cd 6c manua
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Operating Instructions Edition 05/2007
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  • Page 1 Operating Instructions Edition 05/2007 LDS 6 In-situ Laser Gas Analyzer Sensor CD 6C manual gas analysis...
  • Page 3 LDS 6 In-situ Laser Gas Analyzer Sensor CD 6C manual A5E00912721-01 Release 05/2007...
  • Page 4 Conformemente alla "Legge sulle unità di misura" i dati in pollici valgono soltanto per l'esportazione. SIEMENS AG Automation and Drives Process Instrumentation © Siemens AG 2007 Subject to changes without prior notice D-76181 Karlsruhe Siemens Aktiengesellschaft Order no. A5E00912721 Printed in Germany...

  • Page 5: Table Of Contents

    Appendix B: Gas Flow Calculations........39 CD 6C – Water vapor sensor for LDS 6...

  • Page 7: Introduction

    The purpose of this manual is to provide support for Siemens ser- vice technicians when installing, maintaining and servicing the sensor CD 6C for the LDS 6 laser gas analyzer. This manual describes the preparations, installation, maintenance and service and trouble shooting. It also specifies the environmental condi- tions and space requirements.
  • Page 8 • LDS 6 • LDSComm The remaining trademarks in this publication may be trademarks, whose use by third parties for their own purposes could violate the rights of the owner. CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...

  • Page 9: Preparations For Installation

    This chapter provides pre-installation guidelines for the LDS 6 laser gas analyzer. The following requirements must be consid- ered and the described preparations must be completed at the measurement site before the installation of LDS 6 can be per- formed. Flanges Before the gas analyzer and its sensors can be used, a pair of pro- cess flanges should be installed at the measurement site.
  • Page 10 Preparations for Installation Figure 2.1 Dimensions of the water vapour flange (DN80/PN16). Figure 2.2 Dimensions of the flange ANSI 4”/150lbf. CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...

  • Page 11: Installation Of Flanges

    When welding the flange tubes it is recommended to have the Flange Alignment Kit (see Appendix G). The Flange Alignment Kit from Siemens consists of a light source, two flanges, an aim- ing tool, a battery and a battery charger for the light source.
  • Page 12 This is described in a graph that shows the error angle as a function of the light spot distance from the centre (see Figure 2.5 on next side). CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...

  • Page 13: Measurement Of Path Length

    This zone will depend on the purging flow and the flow of the measurement gas.This is further described in Appendix B. CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...

  • Page 14: The Sensors

    3. Process purging check valve. (only if process purging is applied) The Hybrid and Loop Cables The following requirements must be considered before installing the cables at the measurement site. CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...

  • Page 15: Cable Installation Requirements

    NOTE DO NOT remove the protective tube until the cable is installed and ready to be connected to LDS 6 and sensors. DO NOT remove the plastic protective cap until the cable is routed inside the LDS 6/sen- sor. The protective tubes should only be removed by authorized per- sonnel.

  • Page 16: Checklist

    Checklist Go through the following points before beginning the installa- tion of the LDS 6 laser gas analyzer to make sure all preparations are completed. • The flanges shall be welded to the wall of the furnace or fun- nel and properly aligned from both sides.

  • Page 17: Installation Guidelines

    Installation Guidelines This chapter provides instructions for the installation of the CD 6C sensors and cables. Figure 3.1 below shows the principle set- up of the LDS 6 central unit, sensors and cables. purging intake (for sensor head) purging intake...
  • Page 18 4. Connect the fiber and electrical cables according to 3.1.2 “Electrical and optical installation of CD 6C” on page 13. Do not touch the alignment screws (4). CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...

  • Page 19: Electrical And Optical Installation Of Cd 6C

    Install the loop cable in the receiver sensor. Cables are fixed with gaskets. Always use lubricant on the gaskets before installing, otherwise they will be very difficult to remove later. CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...

  • Page 20: Alignment Of The Sensors

    Blue line Figure 3.5 CD 6C alignment kit Align the sensors in the following steps: After switching off the sensor purging, remove the sensor purg- ing tube at the transmitter side: CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...
  • Page 21 Figure 3.6 Removal of the sensor purging tube Release the transmitter lock ring using the supplied tool and remove the sensor: Transmitter side Figure 3.7 Removal of the transmitter lock ring. CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...
  • Page 22 Figure 3.8 Removal of the sensor at the transmitter side. Mount the enclosed alignment adapter at the transmitter side: Figure 3.9 Removal of the sensor at the transmitter side. Mount the cross-hair at the transmitter adapter: CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...
  • Page 23 Fasten the supplied alignment plate. It screws on easily with the help of an O-ring. The alignment plate is included in the supplied alignment kit, Order No. A5E00253142. Turn the flashlight on and mount it on the alignment plate. CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...
  • Page 24 The light dot should have a perfect round shape. If the light dot is oval or scattered it might be necessary to adjust the welded flanges or remove any objects that might be blocking the light path. CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...
  • Page 25 Figure 3.15 Mount of linearization adapter at receiver side. Again, adjust the four alignment screws until the light dot is cen- tered in the cross hair at the receiver side. CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...

  • Page 26: Atex Transmitter And Receiver Sensors

    CD 6 will need repeated realignment. 3.1.4 ATEX Transmitter and Receiver Sensors A hybrid cable is used to connect the transmitter sensor to the barrier. CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...
  • Page 27 “Transmitter” on page 13. Connecting Receiver to Transmitter Sensor For ATEX versions of the LDS 6 the receiver sensor are pre- mounted with special ATEX electronics and surge protection. The green phoenix contact mounted on the sensor card is already connected with a red wire for +24 V and a black wire for GND.

  • Page 28: Purging

    Ambient air contains roughly 1% water vapor. Therefore the sen- sor heads must be purged with a very dry gas like nitrogen. Since the resolution of the water vapor application of LDS 6 is better than 1 ppm the nitrogen should be correspondingly dry.
  • Page 29 (0.16”) and an outer diameter of 6 mm (0.24”). Otherwise it is supplied with this input plugged. Figure 3.19 Gas purging into process 1. Process side purging input. 2. Purging input check valve. 3. Wedge window. CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...
  • Page 30 Installation Guidelines CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...

  • Page 31: Technical Description

    The beam diameter is expanded to about 25 mm in order to improve performance in high dust load (>1 g/m ) applications. CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...

  • Page 32: The Cd 6C Ex Sensor

    The CD 6C Ex sensor is used for measurements in these kind of measurements. In this ATEX version the CD 6C Ex sensor is used. For this set-up a barrier box CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...

  • Page 33: Technical Specification

    The Hybrid Cable Two optical fibers and two electrical wires for 24 VDC in one cable. (The loop cable interconnecting the sensor pair does not contain the single mode fiber). CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...
  • Page 34 LDS 6. Dimension, sensor box Ø: 163 mm, D: 105 mm. Weight 2 x 20 kg (44 lb). CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...
  • Page 35 2% of measured value or the detection limit. The highest of these values applies. CD 6CEx The spec for the Ex sensor CD 6CEx differs from the CD 6C in some aspects. CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...
  • Page 36 (EN 50020 or DIN EN 50020, and IEC 60079-11 or EN 60079-11). Power consumption Max. 0.58 W. Degree of protection IP65 according to EN60529. Permissible ambient tem- -30 to +60°C (-22 to +140°F). perature (Operation) CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...

  • Page 37: Spare Parts List

    5.1.3 Spare Parts List All spare parts are identified by an order number. For example the order number corresponds to a A5E00338487 Window module, quartz CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...
  • Page 38 CD 6C, High pres. window DN80/PN16 A5E00534671 Alignment kit CD 6C A5E00534673 Please note that three of the LDS 6 sensor electronic spare parts are version dependent. (The PCB:s are not affected but detector electronics are different). Spare parts sensors electronics Product description Order no.

  • Page 39: Repair/Upgrade

    Your will find the serial number on the rating plate on the central unit. Address of the responsible repair location, your contact, list of spare parts etc. can all be found on Internet: http://www.siemens.com/automation/service&support or http://www.automation.siemens.com/partner CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...
  • Page 40 Spare Parts List CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...

  • Page 41: Appendix A: Toolkits

    Appendix A: Toolkits Appendix A: Toolkits Siemens provide toolkits to be used for installation, maintenance and service of the LDS 6 laser gas analyzer. These toolkit are described in this appendix. Flange Alignment Kit The Flange Alignment Kit (shown in Figure 6.1) is intended for use when installing the two opposite process flanges on the measurement volume.
  • Page 42 – in other words if the spot is inside a circle with a 5 mm radius. Figure 6.2 Graph showing the reading of angle error CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...

  • Page 43: Sensor Alignment Kit

    The instruction is found on the inside of the case. Position Designation Hook spanner Allen keys, 3 mm and 6 mm Alignment flange Light source Lubricant, copper based Blue line Figure 6.3 CD 6C alignment kit CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...
  • Page 44 Appendix A: Toolkits CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...

  • Page 45: Appendix B: Gas Flow Calculations

    = the inlet absolute pressure [hPa] = the gas specific gravity (air = 1.0) = the upstream temperature [°C] Pp = process pressure (1023 hPa) Figure 7.1 Purge air flow rate CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...
  • Page 46 Appendix B: Gas Flow Calculations CD 6C – Water vapor sensor for LDS 6 A5E00912721-01...
  • Page 47 In-situ ............28 the sensor ..........28 Instructions Toolkits ...........35 Installation of flanges ......5 Transmitter sensor Technical description ......26 LDS 6 principle set-up ......11 Loop cable Installation .........13 Preparations .........8 CD 6C – Water vapor sensor for LDS 6 Operating instructions A5E00912721-01...
  • Page 50 Siemens Aktiengesellschaft @ A 5 E 0 0 9 1 2 7 2 1 @ Automation and Drives A5E00912721 Industrial Automation Systems Postfach 4848 90327 NÜRNBERG GERMANY www.siemens.com/processanalytics A5E00912721-01...

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