Siemens LDS 6 Operating Instructions Manual
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Siemens LDS 6 Operating Instructions Manual

In situ laser gas analyzers
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In situ Laser Gas Analyzers
LDS 6, Optics Housing CD 6
Operating Instructions
7MB6122-.....-....
01/2022
A5E01134377-05
Introduction
Safety notes
Preparations for installation
Installation guidelines
Technical description
Service and maintenance
Technical specification
Dimension drawings
Appendix
ESD guidelines
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2
3
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6
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8
A
B

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Summary of Contents for Siemens LDS 6

  • Page 1 Introduction Safety notes Preparations for installation In situ Laser Gas Analyzers Installation guidelines LDS 6, Optics Housing CD 6 Technical description Service and maintenance Operating Instructions Technical specification Dimension drawings Appendix ESD guidelines 7MB6122-..-..01/2022 A5E01134377-05...
  • Page 2 Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems.

  • Page 3: Table Of Contents

    LDS 6, Optics Housing CD 6 Ex ................... 31 Service and maintenance ........................33 General about service and maintenance................33 Cleaning the optical parts of LDS 6, Optics Housing CD 6 ............ 34 LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...
  • Page 4 Return procedure ....................... 35 Technical specification......................... 37 LDS 6, Optics Housing CD 6....................37 Hybrid and sensor connection cables.................. 38 LDS 6, Optics Housing CD 6 Ex ................... 39 Purging..........................40 Dimension drawings ..........................41 Process flange and purge tube dimensions ................. 41 LDS 6, Optics Housing CD 6 dimensions................

  • Page 5: Introduction

    The purpose of this manual is to provide support for the customer when installing, maintaining and servicing the Optics Housing CD 6 for the LDS 6 laser gas analyzer. This manual describes the preparations, installation and maintenance. It also specifies the environmental conditions and space requirements.
  • Page 6 Introduction 1.1 Introduction LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

  • Page 7: Safety Notes

    The test certificate for your explosion-proof device only applies to the original configuration as well as to the installation and connection according to the switching and piping plans of Siemens. If one or more components are changed, the explosion protection properties of your device are abolished.

  • Page 8: Requirements For Special Applications

    Note Operation under special ambient conditions We highly recommend that you contact your Siemens representative or our application department before you operate the device under special ambient conditions as can be encountered in nuclear power plants or when the device is used for research and development purposes.
  • Page 9 The optics housing (transmitter and receiver) is built mainly using stainless or surface treated steel and an aluminum alloy (content of aluminum >85 %; content of magnesium, titanium and zirconium <0.7 %) and an O ring made of FKM or FFKM. LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...
  • Page 10 The analyzer is classified as a class 1 laser product. The emitted laser light is invisible (near infrared) and not hazardous to the unprotected eye. The analyzer has warning labels at appropriate positions according to EN 60825-1:2014. LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

  • Page 11: Qualified Personnel For Hazardous Area Applications

    • National Electrical Code (NEC - NFPA 70) (USA) • Canadian Electrical Code (CEC Part I) (Canada) Further provisions for hazardous area applications are for example: • IEC 60079-14 (international) • EN 60079-14 (EU and UK) LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

  • Page 12: Conformity With European Directives

    Member States relating to equip‐ ment and protective systems intended for use in potentially ex‐ plosive atmospheres The applicable directives can be found in the EU declaration of conformity of the specific device. LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

  • Page 13: Preparations For Installation

    Figure 3-1 LDS 6, Optics Housing CD 6 mounted on a process flange There are applications where furnace walls move due to variations in temperature. If the furnace walls move the optics housings will be miss-aligned and the measurement interrupted. To...

  • Page 14: Installation Of Flanges

    Depending on the diameter and length of the stubs the possibility to align the optics housings is more restricted when long purging tubes are used. See also Process flange and purge tube dimensions (Page 41) LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

  • Page 15: Measurement Of Path Length

    DO NOT remove the protective tube until the cable is installed and ready to be connected to LDS 6 and Optics Housing CD6. DO NOT remove the plastic protective cap until the cable is routed inside the LDS 6/Optics Housing CD 6. The protective tubes should only be removed by authorized personnel.

  • Page 16: Identification Of Cables

    A/B depends on the direction in which the cable is oriented. Before cables are shipped from Siemens they are tested in both directions A to B and B to A. It does not matter which way the cable is installed. Hybrid cables are installed between the LDS 6 and the transmitter optics housing.

  • Page 17: Check List

    3.4 Check list Check list Go through the following points before beginning the installation 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 funnel and properly aligned from both sides.
  • Page 18 Preparations for installation 3.4 Check list LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

  • Page 19: Installation Guidelines

    Installation guidelines Installation This chapter provides instructions for the installation of the LDS 6, Optics Housing CD 6 and its cables. The figure below shows the principle set-up of the LDS 6 central unit, optics housings and cables. Figure 4-1...

  • Page 20: Electrical Connections

    When mounting the optics housings the large springs of the alignment flanges must be located in the lower section of the flange. All purging outlets must face downwards. LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...
  • Page 21 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 LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...
  • Page 22 Installation guidelines 4.3 Alignment and mount it on the alignment plate. In dusty environments or long path-lengths use a stronger light source such as a 55 W/12 V lamp, an option supplied by Siemens. Transmitter side Figure 4-6 Remove the launcher Remove the optical fiber launcher on the transmitter end.
  • Page 23 Mount the cross-hair and align the transmitter with the two hexagonal socket screws, by tightening and loosening them until the light dot is centered in the inner ring of the cross-hair. Transmitter side LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...
  • Page 24 Transmitter side Figure 4-9 Mount the flash light in the transmitter Move the flashlight to the transmitter and replace the cross-hair with it. Receiver side LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...
  • Page 25 LDS6, Optics Housing CD 6 will need repeated realignment. This can be avoided by mounting the optics housing pair on an external, more stable base, like a concrete or steel support. LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

  • Page 26: Atex Considerations

    4. Connect the hybrid cable to the transmitter optics housing. Connecting receiver to transmitter optics housing For ATEX versions of the LDS 6 the optics housing are premounted 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 27 0.5 l/min during normal operation. A too low flow rate and/or too humid purging gas might lead to faulty measurements. Optics housing purging The optics housings for optics housings purging supplied by Siemens include a needle valve and a check valve (see the figure below). Purging setup Follow the procedure to mount the purging connectors: Remove the four plugs from the wedge tube.
  • Page 28 Optics housing purging setup Note When using a plastic tube, be sure to use the rigid metal insert. See also Purging of optical process interface (Page 50) Gas flow calculations (Page 54) LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

  • Page 29: Technical Description

    The sensor connection cable The sensor connection cable connects the transmitter optics housing to the receiver optics housing. This cable is a hybrid cable that does not contain the single-mode fiber. LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

  • Page 30: Lds 6, Optics Housing Cd 6

    5.3 LDS 6, Optics Housing CD 6 LDS 6, Optics Housing CD 6 The LDS 6, Optics Housing CD 6 (shown in the figure below) is designed for in situ measurements. It consists of a transmitter and a receiver creating a single path measurement situation.

  • Page 31: High Pressure Flange

    Technical description 5.5 LDS 6, Optics Housing CD 6 Ex optical signal and returned to the central unit. The mounting of the optics housing requires a flange with the dimensions DN65/PN6 or ANSI 4"/150 lbf. High pressure flange In some applications a high pressure window is needed to seal the process. These windows can be purchased as spare parts and they exist in 3 versions namely, DN65/PN6, ANSI 4"/150lb and...
  • Page 32 Technical description 5.5 LDS 6, Optics Housing CD 6 Ex For further information regarding the Ex option please refer to the A5E03314905 Operating Instructions for use of the device in hazardous areas. See also ATEX setup (Page 45) LDS 6, Optics Housing CD 6...

  • Page 33: Service And Maintenance

    Service and maintenance General about service and maintenance During normal use, the central unit LDS 6 requires no service. The optics housing with its optical surfaces will need regular maintenance. Depending on application and purging method, the interval of maintenance may vary from 1 to 12 months.

  • Page 34: Cleaning The Optical Parts Of Lds 6, Optics Housing Cd 6

    Service and maintenance 6.3 Ordering of spare parts Cleaning the optical parts of LDS 6, Optics Housing CD 6 Before the optics housings are removed make sure that: • No purging is active. WARNING Steam purging Particularly when using steam for purging it is absolutely mandatory to turn it off since...

  • Page 35: Return Procedure

    The watch list opens. 6. Click "Add to cart of Industry Mall". The Siemens Industry Mall opens and you can order your spare part. Return procedure Enclose the bill of lading, return document and decontamination certificate in a clear plastic pouch and attach it firmly to the outside of the packaging.
  • Page 36 3090 and UN 3091. • Remove lithium batteries prior to shipment. • If the battery cannot be removed, return the product according to the Regulation of Dangerous Goods with special transport documentation. LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

  • Page 37: Technical Specification

    LDS 6, Optics Housing CD 6 The optics housing CD6 The LDS 6, Optics Housing CD 6 (a optics housing for measuring through a gas channel) is designed for in situ measurements. It consists of a transmitter and receiver creating a single path measurement situation.

  • Page 38: Hybrid And Sensor Connection Cables

    Multimode optical fiber configured at both ends with SMA connectors. For installations in Ex zones non-intrinsically-safe cables have to be spatially separated from intrinsically-safe lines Cable sheath Oil-resistant polyurethane LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

  • Page 39: Lds 6, Optics Housing Cd 6 Ex

    -5 ... +50 °C (23 ... 122 °F) during installation Rel. humidity <95 % relative humidity, above dew point LDS 6, Optics Housing CD 6 Ex LDS 6, Optics Housing CD 6 for use in Specification hazardous areas Dimension, optics housing L: 450 mm (17 3/4"), Ø: 163 mm (6 7/16"),...

  • Page 40: Purging

    Technical specification 7.4 Purging LDS 6, Optics Housing CD 6 for use in Specification hazardous areas Permissible ambient humidity <95 % relative humidity, non-condensing Optics housing/process interface DN65/PN6 and ANSI 4"/150 lbs.; DN80/PN16 (only as pressure-resistant variant) Measurement path length 0.3 ...

  • Page 41: Dimension Drawings

    (both delivered by Siemens). The standard purge tube from Siemens is 400 mm (the tube protrudes 370 mm into the process from the flange surface). 900 mm and 1200 mm tubes can be supplied as an option. If the purge tube is shorter than the flange tube there could be a build up of dust in front of the purge tube that eventually blocks the light-beam.
  • Page 42 Dimension drawings 8.1 Process flange and purge tube dimensions 4 x Ø14 mm Figure 8-1 Dimensions of the flange DN65/PN6. LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...
  • Page 43 Dimension drawings 8.1 Process flange and purge tube dimensions 8 x Ø(for 5/8" bolt) Figure 8-2 Dimensions of the flange ANSI4"/150 lbs. LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

  • Page 44: Lds 6, Optics Housing Cd 6 Dimensions

    Dimension drawings 8.2 LDS 6, Optics Housing CD 6 dimensions LDS 6, Optics Housing CD 6 dimensions Ø163 Figure 8-3 The dimensions of the Optics Housing CD 6 LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

  • Page 45: Appendix

    Appendix ATEX setup ATEX setup This appendix provides illustrations of the ATEX setup for the LDS 6 laser gas analyzer. This setup is used for measurements in explosive areas. Figure A-1 ATEX barrier LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...
  • Page 46 Appendix A.1 ATEX setup Figure A-2 ATEX transmitter optics housing Figure A-3 ATEX receiver optics housing LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...
  • Page 47 Appendix A.1 ATEX setup Figure A-4 System drawing LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...
  • Page 48 Appendix A.1 ATEX setup Figure A-5 ATEX setup LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...
  • Page 49 Appendix A.1 ATEX setup Figure A-6 ATEX setup description LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

  • Page 50: Purging Of Optical Process Interface

    (the needle valve limits the flow to maximum 120 l/min). This purging type allows the flow to be up to 500 l/min, at an upstream pressure of 6 bar. Optics housings for elevated flow instrument purging from Siemens are equipped with fan adapter, see the figure below. LDS 6, Optics Housing CD 6...
  • Page 51 The Siemens standard air blower solution provides an air flow of up to about 850 l/min. Air blower can be purchased from Siemens as an accessory. The figure below illustrates the air blower optics housing, including purging flange.
  • Page 52 Steam purging requires the appropriate optics housings to be used. Figure A-10 Steam purging Steam purging installation When steam is used there are a couple of important issues to consider. LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...
  • Page 53 This accessory can be purchased from Siemens. It can also be recommended to isolate the steam tubing and to keep the tube as short as possible (place the trap as close to the optics housings as possible).

  • Page 54: Gas Flow Calculations

    = the upstream temperature [°C] = process pressure [hPa] T 1 = 25 °C = 100 °C = 2026 hPa = 1013 hPa = 3039 hPa [x1013 hPa] Figure A-12 Purge air flow rate LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

  • Page 55: Tool Kits

    The maximum purge flow rate of the SITRANS SL on process side is limited to 50 Nl/min. Tool kits Siemens Sensor Alignment Kit be used for installation, maintenance and service of the LDS 6 laser gas analyzer. These toolkit are described in this appendix.
  • Page 56 Appendix A.4 Tool kits 5. Lubricant, copper based 6. Cross hair Sensor alignment kit LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

  • Page 57: Esd Guidelines

    The figure below shows the maximum electrostatic voltage which may build up on a person coming into contact with the materials indicated. These values correspond to IEC 801-2 specifications. LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...
  • Page 58 In this way, the discharged energy can not affect the sensitive devices. Discharge your body before you start taking any measurements on a module. Do so by touching grounded metallic parts. Always use grounded measuring instruments. LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

  • Page 59: Index

    Laws and directives, 11 Qualified personnel, 11 Laws and directives Disassembly, 11 Personel, 11 Lithium batteries Return, 36 Maintenance, 33 Modifications correct usage, 7 improper, 7 Qualified personnel, 11 Return procedure, 35 LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...
  • Page 60 Index LDS 6, Optics Housing CD 6 Operating Instructions, 01/2022, A5E01134377-05...

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