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In-situ Laser Gas Analyzer Sensor Ft 6 Manual

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Operating Instructions Edition 05/2007 LDS 6 In-situ Laser Gas Analyzer Sensor FT 6 manual gas g analysis y @A5E00912840@ A5E00912840D-01 Siemens Aktiengesellschaft A5E00912840 Automation and Drives Industrial Automation Systems Postfach 4848 90327 NÜRNBERG GERMANY A5E00912840-01 www.siemens.com/processanalytics GN: 30480_LDS6 s LDS 6 In-situ Laser Gas Analyzer Sensor FT 6 manual A5E00912840-01 Release 05/2007 The reproduction, transmission or use of this document or its contents is not permitted without express written authority. Offenders will be liable for damages. All rights created by the granting of patents or registration of a design are reserved. Technical data subject to change without notice. ULTRAMAT, OXYMAT, CALOMAT, SIPAN are SIEMENS registered trademarks. All other product or system names are (registered) trademarks of their respective owners and must be treated accordingly. According to the German law on units in measuring technology, data in inches only apply to devices for export. Weitergabe sowie Vervielfältigung dieser Unterlage, Verwertung und Mitteilung ihres Inhaltes nicht gestattet, soweit nicht ausdrücklich zugestanden. Zuwiderhandlungen verpflichten zu Schadenersatz. Alle Rechte vorbehalten, insbesondere für den Fall der Patenterteilung oder GM-Eintragung. Technische Änderungen vorbehalten. ULTRAMAT, OXYMAT, CALOMAT, SIPAN sind Marken der SIEMENS AG. Die übrigen Bezeichnungen in diesem Handbuch können Marken sein, deren Benutzung durch Dritte für deren Zwecke die Rechte der Inhaber verletzen können. Die Angaben in Zoll (inch) gelten gemäß dem Gesetz über Einheiten im Meßwesen" nur für den Export. Toute communication ou reproduction de ce document, toute exploitation ou communication de son contenu sont interdites, sauf autorisation expresse. Tout manquement à cette règle est illicite et expose son auteur au versement de dommages et intérêts. Tours nos droits sont réservés pour le cas de la délivrance d'un brevet ou celui de l'enregistrement d'un modèle d'utilité. Modifications techniques sont réservées. ULTRAMAT, OXYMAT, CALOMAT, SIPAN sont des marques déposées de SIEMENS AG. D'autres dénominations utilisées dans ce document peuvent également être des marques déposées dont l'utilisation par des tiers à leurs propres fins peut enfreindre les droits des propriétaires desdites marques. La divulgación y reproducción de este documento asi como el aprovechamiento de su contenido, no están autorizados, a no ser que se obtenga el consentimiento expreso, para ello. Los infractores quedan obligados a la indemnización por daños y perjucios. Se reservan todos los derechos, en particular para el caso de concesion de Patente o de Modelo de Utilidad. Salvo modificaciones ténicas. ULTRAMAT, OXYMAT, CALOMAT, SIPAN son marcas registradas de SIEMENS AG. Las otras designaciones que figuran en este documento puenden ser marcas cuya utilización por terceros para sus propios fines puede violar los derechos de los proprietarios de dichas marcas. Conforma a la "Ley sobre las unidades de medida", las dimensiones en pulgadas sólo son válidas para la exportación. La trasmissione a terzi e la riproduzione di questa documentazione, cosiccome lo sfruttamento del suo contenuto non è permesso, se non autorizzato per iscritto. Le infrazioni comporteranno una richiesta di danni. Tutti i diritti sono riservati, in particolare nel caso di brevetti. Modifiche tecniche possibili. ULTRAMAT, OXYMAT, CALOMAT, SIPAN sono marchi registrati di SIEMENS AG. Le denominazioni di altri prodotti menzionati in questa documentazione possono essere marchi il cui uso da parte di terzi può violare i diritti di proprietà. Conformemente alla "Legge sulle unità di misura" i dati in pollici valgono soltanto per l'esportazione. SIEMENS AG Automation and Drives Process Instrumentation D-76181 Karlsruhe Siemens Aktiengesellschaft © Siemens AG 2007 Subject to changes without prior notice Order no. A5E00912840 Printed in Germany AG 1004 De 0,05 90 PU CONTENT Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Preparations for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1 2.1.1 2.2 2.2.1 2.2.2 The Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Sensor Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 The Hybrid and Loop Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Cable Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Identification of Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.1 3.1.1 3.1.2 3.1.3 3.1.4 3.1.5 The Compensation path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Electrical and optical installation of FT 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Alarm considerations when using FT 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Aligning FT 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 ATEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Technical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.1 4.1.1 4.1.2 4.1.3 4.1.4 4.1.5 4.2 FT 6 and cable overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 The purpose of FT 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 The Hybrid Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 The Loop Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 The FT 6 Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 The FT 6 Ex Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Technical Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Spare Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 5.1 5.1.1 5.1.2 5.1.3 5.2 Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Labels Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Ordering Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Spare Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Repair/Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 FT 6 – Water vapor sensor compensation path for LDS 6 Operating instructions A5E00912840-01 i Introduction 1 Introduction Purpose The purpose of this manual is to provide support for Siemens customers when installing, maintaining and servicing the compensation path FT 6 for the LDS 6 water vapor analyzer. This manual describes the preparations, installation and maintenance. It also specifies the environmental conditions and space requirements. How to Use this Manual All instructions in this manual are marked with the symbol to the left. In “Preparations for Installation” and “Installation Guidelines” the instructions shall be followed in given order. The preparation checklist shall be used to check that all has been prepared and considered at the measurement site before start of installation. Chapter Overview The service manual begins with a description of the sensor. In the chapter “Technical Description” all parts of the sensor are described. Before the sensor can be installed there are a few things that must be prepared at the measuring site. This is described in the chapter “Preparations for Installation”. The third chapter, “Installation Guidelines”, gives instructions for the installation of cables. At the end of the manual there are some Appendices containing reference documents. Safety Guidelines This manual contains notices which should be observed to ensure personal safety, as well as to protect the product and the connected equipment. These notices are marked as follows according to the level of danger: WARNING Warning means that death or severe personal injury and/or substantial damage to property may occur if the appropriate safety precautions are not observed. CAUTION Caution means that slight personal injury or damage to property can occur if the appropriate safety precautions are not observed. 1 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Introduction NOTE Note relates to important information on the handling of the product or the respective part of the manual to which particular attention should be paid. Qualified Personnel Severe personal injury and/or extensive damage to property may occur following unqualified installation or work on the device/ system or the failure to observe the warnings described in the manual or on the device/system cabinet. Therefore only suitably qualified personnel may install or work on it. Persons considered as qualified in regards to the safety information given in this manual and/or on the product itself are those that: • are either configuring engineers familiar with the safety concepts of automation technology; or • have been trained as operators in the use of automation technology equipment and are acquainted with the contents of this manual which refer to operation; or • have been appropriately trained as commissioning and/or maintenance personnel for such automation technology equipment or are authorized to energize, ground and tag circuits and devices/systems in accordance to established safety practices. Units The measurements in this manual are given in metric units and in American units (in parenthesis). Trademarks The following names are registered trademarks of Siemens AG: • 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. 2 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Preparations for Installation 2 Preparations for Installation This chapter provides pre-installation guidelines for the FT 6 laser gas analyzer. The following requirements must be considered and the described preparations must be completed at the measurement site before the installation of FT 6 can be performed. 2.1 The Sensor The following requirements must be considered before installing the sensor at the measurement site. 2.1.1 Sensor Installation Requirements There must be enough space to enable removing of the sensor lids and adjustment of the sensor. Figure 2.1 shows the dimensions of FT 6.      Figure 2.1 The dimensions of the compensation path housing 3 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Preparations for Installation 2.2 The Hybrid and Loop Cables The following requirements must be considered before installing the cables at the measurement site. 2.2.1 Cable Installation Requirements The hybrid cables should be installed in a way that protects them from mechanical wear such as sharp edges or moving parts. Operating temperature for the cables is -40 to +80°C (-40 to + 176°F). Installation temperature for the cables is -20 to +80°C (-4 to + 176°F). These temperatures refer to both ambient temperature and any parts the cables come in contact with. Always protect the single mode fibre (E2000 connector with green colour) from dust. Cables are supplied with a protective tube at each end and inside these a plastic protective cap for the single mode fibre. NOTE DO NOT remove the protective tube until the cable is installed and ready to be connected to LDS 6 and sensor. DO NOT remove the plastic protective cap until the cable is routed inside the LDS 6/sensor. The protective tubes should only be removed by authorized personnel. The bending radius of the cable may never be smaller than 100 mm (4”). If clamps are used there must be a minimum of 0.5 mm (0.02”) clearance between cable and clamp or use rubber coated clamps. Take extra care of hybrid cables for HCl systems since the cables are very sensitive to the wavelength used in these systems. Figure 2.2 shows the pre-requisites for installation of the cables. 3URWHFWLRQWXEHIRUWKHFDEOHV RQHLQHDFKHQG  0 LQ DSSUR[FP  LP XP UD GL XV    FP 127('2127UHPRYHWKHSURWHFWLYHWXEH XQWLOWKHFDEOHLVLQVWDOOHGDQGUHDG\WR EHFRQQHFWHGWR/'6DQGVHQVRUV   7KHFDEOHHQGSURWHFWLRQVKRXOGRQO\EH UHPRYHGE\DXWKRUL]HGSHUVRQQHO  ,IFODPSVDUHXVHGWKHUHPXVWEHPLQPP   FOHDUHQFHEHWZHHQFDEOHDQGFODPSV +RZHYHULWLVUHFRPHQGHGWRSURWHFWWKHFDEOHV LQWRDPHWDOOLFWXEH3URSHUVL]HRIWKLVWXEHLVPP   (QYLURQPHQWUHTXLUHPHQWV 2SHUDWLQJWHPSƒ&ƒ& ƒ)ƒ) ,QVWDOODWLRQWHPSƒ&ƒ& ƒ)ƒ)  0D[WHQVLOHVWUHQJWK1 OEV  ,PSDFWUHVLVWDQFH1FP OEV  0LQEHQGUDGLXVFP  4 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Preparations for Installation Figure 2.2 Cable handling 2.2.2 Identification of Cables All cables are marked with identification tags, as follows: HXXXA or HXXXB, where H means Hybrid cable. XXX is the serial number for the cable and A/B depends on the direction in which the cable is oriented. Before cables are shipped from Siemens Laser Analytics 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 sensor. LXXX are loop cables and are the same for all systems. Loop cables are installed between the transmitter sensor and the receiver sensor. CAUTION Make sure the operating and installation temperatures for the hybrid and loop cables are not exceeded. 5 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Preparations for Installation 6 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Installation Guidelines 3 Installation Guidelines 3.1 The Compensation path The FT6 unit is connected between the purging gas source and the purged CD6 C sensor. The purging gas is fed through the FT6 by means of a gas inlet, a measurement chamber and a gas outlet. The concentration of H2O in the measurement chamber is measured using a measurement channel of the LDS system. +\EULGFDEOHWRWKH/'6V\VWHP 3XUJLQJJDVLQOHW 3XUJLQJJDVRXWOHW :DWHUYDSRUFRPSHQVDWLRQSDWK Figure 3.1 Principle set-up of an installation NOTE The FT6 is assembled when delivered. Cables and gas tubes are mounted and the cover is sealed. None of the FT6 parts should be disassembled. The only mounting required is the connection of the hybrid cable to the LDS6 system and the gas connectors to the purging gas supply. The installation process is to be performed as follows: 3.1.1 Installation It is necessary to remove the air moisture inside the sensor. FT 6 is delivered from the factory with readily mounted nitrogen purge connections. 7 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Installation Guidelines NOTE The recommended flow is 10 l/min and the absolute minimum is 6 l/ min. The pressure should be as close to ambient as possible and should not exceed 1.5 bar absolute. Too low flow rate and/or to humid purging gas might lead to faulty measurements. 3XUJLQJJDVRXWOHW &RQQHFWLRQ WRJURXQG !PP 3XUJLQJJDVLQOHW +\EULGFDEOHWRWKH/'6V\VWHP Figure 3.2 The FT6 connections. The installation process should follow these steps. 1. Connect the gas inlet and outlet to the purging gas line using 6 mm tubes. 2. Connect the hybrid cable to the LDS 6 system following the instructions in the LDS6 manual. NOTE The connection to ground is only delivered with the FT 6 ATEX. 3.1.2 Electrical and optical installation of FT 6 Install the cables, hybrid and loop cable, at the transmitter sensor. Cables are fixed in the sensor with gaskets. Always use lubricant on the gaskets before installing, otherwise these will be very difficult to remove later. Multi-mode fibre (SMA connector) and 24 V are just connected straight through to the receiver. NOTE Always protect the single-mode fibre (E2000 connector) from dust. Do not remove the plastic vial until the cable is firmly fastened in the sensor. 8 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Installation Guidelines “9'& SRODULVDWLRQLQGHSHQGHQW     +\EULG&DEOH /RRS&DEOH 0XOWLPRGHILEUH EOXH 6LQJOHPRGHILEUH JUHHQ Figure 3.3 Connections in the transmitter 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. Connect the multi-mode fibre to the sensor-board as shown in Figure 3.4. “9'& SRODULVDWLRQLQGHSHQGHQW /RRS&DEOH   0XOWLPRGHILEUH EOXH Figure 3.4 Connections in the receiver 3.1.3 Alarm considerations when using FT 6 FT 6 is connected as a separate channel to LDS 6. It has to be connected to channel 2. This channel is processed by LDS 6 as compensation information for channel 1 (and 2 if two CD 6C is used). Thus it is very important to monitor the alarms on channel 2 because they make measurement values on channel 1 (and channel 2) invalid. Too low transmission will for instance make the compensation information noisy which will degrade the calculated concentration values in the other channels. To high concentration value from FT 6, on the other hand, might indicate a leaking FT 6 or a failure in the purging system. Our recomendation is that this alarm information is handled by the customers DCS (Distributed Control System) in an appropriate way. 3.1.4 Aligning FT 6 Sometimes it may be necessary to realign FT 6, as for instance when the sensor electronics is changed. To do this a certified technician needs to be called since special tools and skills are needed. 9 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Installation Guidelines WARNING If aligning needs to be done in an ATEX zone it is forbidden to open the lid during operation. Be sure to shut down the system and remove FT 6 out of the ATEX zone before aligning. 3.1.5 ATEX A hybrid cable is used to connect the transmitter sensor to the barrier. For details of this se the CD 6C manual. Connecting the Sensor to the Barrier 1. Cut off the pre-mounted phoenix contact at the hybrid cable. 2. Insert the hybrid cable/-s (one for each channel) in the feed throughs at the top of the barrier box. Fasten each cable with a gasket. 3. Connect each hybrid cable to the Surge Protection Devices SD32X (yellow). - (brown cable) shall be connected to inlet number 4 and + (green cable) to inlet number 5. 4. Connect the hybrid cable to the compensation path as described in “Compensation path – FT 6” on page 13. Connecting the ATEX version of FT 6 For ATEX versions FT 6 is 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. Two additional wires should be connected to the phoenix connector. These wires come from the loop cable. 1. Connect the green wire next to the red one (for 24 V) on the phoenix contact. 2. Connect the brown wire next to the black one (for GND) on the phoenix contact. 3. Connect the sensor housing to earth using the premounted 2 meters earth cable (yellow-green). 10 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Technical Description 4 Technical Description This chapter gives a technical description of the FT 6 compensation path. All parts of the system, including sensor and hybrid cable are described. 4.1 FT 6 and cable overview 4.1.1 The purpose of FT 6 The sensor CD 6C is measuring water vapor with a detection limit around 0.5 ppm. Inside the sensor the laser beam have to pass ambient air a couple of decimeters before entering the measurement region. If nothing is done this ambient region will contain approx. 1% water vapor which is more than 10 000 times more than the resolution of the analyzer. Consequently this region has to be purged with a very dry gas – normally nitrogen. It is not always possible to provide a purge gas dry enough and that is when FT 6 comes into play. This sensor measures the water vapor level in the purge gas which makes it possible for LDS 6 to correct for this. This approach reduces the quality demand on the purge gas drastically and a residual water vapor concentration less than 20 ppm is now sufficient. Has to be connected to channel 2 Channel 1 or 3 CD 6C receiver D1 CD 6C transmitter Purging gas LDS 6 Purging gas Measurement path D2 FT 6 (compensation path) Figure 4.1 Principal setup for compensation of water vapor in the purge gas 11 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Technical Description 4.1.2 The Hybrid Cable The hybrid cable is constructed for very harsh environments and consists of two optical fibres, one for transmission of the laser light to the measurement volume (single-mode fibre) and one for the return of the detected signal (multi-mode fibre). Two twisted electrical wires are used for powering the electronics in the sensor (24 VDC). The hybrid cable is illustrated in Figure 4.2. 7ZLVWHGSDLU 0XOWLPRGHILEHU 6LQJOHPRGHILEHU Figure 4.2 Hybrid cable 4.1.3 The Loop Cable FT 6 don’t need a loop cable since it is completely contained in its housing. 4.1.4 The FT 6 Sensor The water vapor compensation sensor, FT 6 (shown in Figure 4.3 on next page) is designed for compensation of the residual water vapor in the purging gas for CD 6C. It consists of a single path housed in a cabinet. 12 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Technical Description        Figure 4.3 Compensation path – FT 6 1. Sensor electronics. 2. Detector module. 3. Surge protection (ATEX only). 4. Compensation path. 5. Purge gas inlet. 6. Hybrid cable. 7. Purge gas outlet. The transmitter includes a lens and a connection for the optical fibre located in the focal plane of the lens. The receiver contains a lens and the sensor electronics. The sensor electronics consist of the detector module and the sensor card. The powering of the sensor electronics is performed with a twisted pair copper cable delivering 24 VDC. The detector card is a detector with pre-amplifier, and the sensor card consists of driver electronics for the optical return signal and DC/DC-converter. The laser light is coupled from the optical fibre in the transmitter to its lens and passes through the measurement volume. The lens in the receiver focuses the incoming laser light on the detector where it is converted to an electrical signal. This signal is 13 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Technical Description amplified and converted to an optical signal and returned to the central unit. 4.1.5 The FT 6 Ex Sensor Each measurement channel is available in this ATEX version for measurements in explosive areas. The FT 6 Ex sensor is used for measurements in these kind of measurements. In this ATEX version the FT 6 Ex sensor is used. For this set-up a barrier box needs to be installed between the central unit and the sensor pair. This barrier box needs to be installed in a safe environment (just as the central unit), fairly close to the central unit. Figure 4.4 shows the ATEX set-up. Electrical installation of the ATEX set-up is described in 3.1.5 “ATEX” on page 10. ATEX zone FT 6 Barrier Marked inside with "Side to sensors" Connect with earth (min 4 square mm cable) Marked inside with "Side to instrument" LDS 6 central unit s LDS 6 Figure 4.4 The ATEX sensor set-up 14 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Technical Description 4.2 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). Technical specification hybrid cable Connector SM fiber E2000 angle polished. Connector MM fiber SMA. Jacket material Green, oil resistant polyurethane. Dimension Diam.: <8 mm. Length: up to 1000 m. Ambient temperature installation -20 to +80°C (-4 to +176°F). Ambient temperature storage and operation -40 to +80°C (-40 to +176°F). Length (distance between central unit and sensor) Maximum 1000 m. Longer is possible if a splicing box is used. Minimum bend radius 10 cm. Impact resistance 200 N/m. Max tensile strength 500 N. The Sensor The compensation path, FT 6, is a sensor used to compensate for residual water vapour in the purge gas when measuring water vapour through a gas channel. It consists of a transmitter and receiver creating a single path measurement situation. The transmitter includes a lens and a connection for the optical fiber located in the focal plane of the lens. The receiver contains a lens, a detector with preamplifier, driver electronics for the optical return signal, and a 24 VDC to ±15 VDC DC/DC-converter. The laser light is coupled from the optical fiber in the transmitter to the transmitter lens and passes through the measurement volume. The lens in the receiver focuses the incoming laser light on the detector where it is converted to an electrical signal. This signal is amplified and converted to an optical signal and returned to the central unit LDS 6. FT 6 is also available in ATEX version. The main difference is that FT 6 Ex is delivered with a ground cable, a surge protection and ATEX electronics. 15 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Technical Description Technical specification FT 6 Dimension, sensor housing L: 800 mm, W: 200 mm., H: 120 mm. Weight 11 kg (24 lb). Power supply Integrated in the central unit. External supply may be used: 18 V - 36 V DC. FT 6Ex: According to the intrinsically-safe standards (EN 50020 or DIN EN 50020, and IEC 60079-11 or EN 60079-11). Power consumption Approx. 2 W. FT 6Ex: Max. 0.58 W. Degree of protection IP65 according to EN60529. EMC - Electromagnetic compatibility Conforms to standard requirements of NAMUR NE21 (08/98). Electrical safety According to EN 61010-1, over voltage test category II. Ex class Ex-protected version according to {Ex} II 1G D T135° EEx ia IIC T4 IP65. Fuse rating Central unit power supply, 1 A, poly switch. Permissible ambient temperature (Operation) -30 to +70°C (-22 to +158°F). FT 6Ex: -30 to +60°C (-22 to +140°F). Permissible ambient temperature (Storage and transport) -40 to +70°C (-40 to +158°F). Permissible ambient humidity < 95% relative condensing, non-condensing. Measurement path length 0.5 m. Temperature 0 to +60°C (+32 to +140°F). Pressure 900 to 1500 hPa absolute. Detection limit 1.4 ppm. Accuracy 2% of measured value or the detection limit. The highest of these values applies. 16 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Spare Parts List 5 Spare Parts List 5.1 Spare Parts FT 6 exists in two versions as a consequence of a major upgrade. One of the FT 6 spare parts are affected by the change and will consequently exist in two different versions. The "Sensor electronic" spare parts consist of one detector and one detector PCB (A5E00681433) respectively. The PCB is not affected by the modification but the detector is different. This spare parts list corresponds to the technical state of February 2007. 5.1.1 Labels Detectors All detectors have the following label where the detector A5Enumber indicates if a sensor is to be used with a Version 2 Central unit. 5.1.2 Ordering Instructions All orders should specify the following: 1. 2. 3. 4. Quantity. Product description. Order number. MLFB number and serial number of the instrument to which the spare part will be used. 5.1.3 Spare Parts List All spare parts are identified by an order number. For example the order number A5E00338487 corresponds to a Window module, quartz. 17 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Spare Parts List Spare parts cables Product description Order no. Standard Hybrid Cable LW 5 m in case A5E00818626001 Standard Hybrid Cable LW 10 m in case A5E00818626002 Standard Hybrid Cable LW 25 m in case A5E00818626003 Standard Hybrid Cable LW 40 m in case A5E00818626004 Standard Hybrid Cable LW 50 m in case A5E00818626005 Hybrid cable LW 2m A5E00814171 Hybrid Cable LW Customized Length (please specify length in order) A5E00856746 Spare parts FT 6 Product description Order no. FT 6, Sensor FT 6 mechanics A5E00338540 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 sensor electronics Product description Order no. CD 6C and FT 6, Sensor Electronic lppm H2O (Ver. 1) A5E00854159 CD 6C and FT 6, Sensor Electronic lppm H2O NEL (Ver. 2) A5E01090420 Spare parts ATEX Product description Order no. LDS6, Barrier box 1 channel A5E00902922 LDS6, Barrier box 2 channels A5E00902926 LDS6, Barrier box 3 channels A5E00902927 CD 6C and FT 6, Sensor Electronic lppm H2O ATEX A5E00924868 LDS6, Roxtec Gasket for Barrier box A5E00979661 18 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Spare Parts List 5.2 Repair/Upgrade Faulty equipment should be sent to the repair department with details of the fault and its origin. When ordering replacement equipment, please specify the serial number of the original equipment. 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 19 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 Spare Parts List 20 FT 6 – Water vapor sensor compensation path for LDS 6 A5E00912840-01 INDEX A T Aligning ....................................................9 ATEX .......................................................10 Barrier ................................................14 FT 6 Ex sensor .....................................14 Set-up ................................................14 Technical description ...............................11 the hybrid cable ..................................12 the sensor ..........................................12 Technical specification the hybrid cable ..................................15 the sensor ..........................................15 B Barrier box ...............................................14 C Cables Identification ........................................5 D Detector module ......................................13 E Explosive area .........................................14 F FT 6 sensor Dimensions ..........................................3 H Hybrid cable Preparations .........................................4 L LDS 6 principle set-up ................................7 Loop cable Installation ...........................................9 Preparations .........................................4 P Preparations ..............................................3 Purge tube ..............................................13 R Return deliveries ......................................19 S Sensor card .............................................13 Sensor electronics ....................................13 Sensor Installation ...........................................7 Preparations .........................................3 Spare parts list ......................................................17 ordering .............................................17 FT 6 – Water vapor sensor compensation path for LDS 6 Operating instructions A5E00912840-01 i Operating Instructions Edition 05/2007 LDS 6 In-situ Laser Gas Analyzer Sensor FT 6 manual gas g analysis y @A5E00912840@ A5E00912840D-01 Siemens Aktiengesellschaft A5E00912840 Automation and Drives Industrial Automation Systems Postfach 4848 90327 NÜRNBERG GERMANY A5E00912840-01 www.siemens.com/processanalytics GN: 30480_LDS6