Dräger Polytron Pulsar 2 Technical Manual
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Dräger Polytron Pulsar 2 Technical Manual

Open path gas
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Dräger Polytron Pulsar 2
Open Path Gas Detector
Technical Manual
You must read, understand, and follow these instructions for use before you use the
gas detector in order to ensure the proper operation and function of the gas detector.
WARNING
D

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Summary of Contents for Dräger Polytron Pulsar 2

  • Page 1 Dräger Polytron Pulsar 2 Open Path Gas Detector Technical Manual WARNING You must read, understand, and follow these instructions for use before you use the gas detector in order to ensure the proper operation and function of the gas detector.

  • Page 2: Table Of Contents

    Understanding The System................................5 Installation of a Dräger Polytron Pulsar 2 ...........................9 Electrical Installation..................................11 Cabling the EEx d Certified Connector............................. 17 Installing and Commissioning the Dräger Polytron Pulsar 2 ....................21 Planned Maintenance................................... 25 Specification....................................26 Receiver default settings................................27 Accessories List ....................................

  • Page 3: For Your Safety

    Dräger Safety are likewise not modified by the recommendations given above. Dräger Safety UK Ltd. CAUTION The Dräger Dräger Polytron Pulsar 2 has no user-serviceable parts. Unauthorised opening can lead to a safety-related failure of the unit. Any unauthorised opening of the unit invalidates all guarantee claims.

  • Page 4: Intended Use

    C to +40 Parts Supplied 1 The Dräger Polytron Pulsar 2 detector comes in two parts a Transmitter and a Receiver; each supplied with an ABS moulded cover. Additionally the detector is supplied with either: — Flying leads and EEx e junction boxes.

  • Page 5: Understanding The System

    Understanding The System Introduction The Dräger Polytron Pulsar 2 detects hazardous releases of flammable hydrocarbons with the well established advantages of the open path technique. To these it adds new and unique features which overcome common problems and annoyances in practical installations.
  • Page 6 Understanding The System Transmitter The Transmitter is a three-wire device, with cable terminals for (i) 24Vdc power; (ii) digital communication; and (iii) power and signal com- mon. The connector for the Handheld Terminal allows data coming from the Receiver to be viewed at the Transmitter, including the graph- ical display of orientation and signal strength needed for alignment.
  • Page 7 PC and the resulting configuration file carried to the Dräger Polytron Pulsar 2 in the Hazardous Area. A new feature with Dräger Polytron Pulsar 2 allows HART signals to be superimposed on the 4 20mA wire without affecting the normal analogue functions.
  • Page 8 Gas calibration and zeroing Dräger Polytron Pulsar 2 is sensitive to a wide range of gaseous hydrocarbons, including the alkane series from methane to hexane. In contrast to instruments working at 3.4 μm, the difference in response to different alkanes is relatively small, of the order of ±30%. The Receiver has provision for up to four factory-installed tables providing the calibration and linearisation for specified gases or gas mixtures.
  • Page 9 EN 50073. 2 Dräger Polytron Pulsar 2 is immune to sunlight so there is no need to take account of the sun position when siting detectors. 3 The density of the gas to be detected has to be considered. Methane is lighter than air and may be expected to rise, unless released at a low temperature or in a mixture with a heavier gas like carbon dioxide.
  • Page 10 Mounting the unit The Dräger Polytron Pulsar 2 should be mounted to a stable structure free of excessive vibration. Good choices would be a steel bulk- head, brick wall, concrete lamppost or a rigid steel structure. Avoid flimsy metal structures that may flex, or wooden structures that may warp.
  • Page 11 Electrical Installation Electrical Installation Field cables specification. -The cables are required to supply between 18 and 32V DC at peak current (all lamps and heaters on). Figure 3 below shows typical values of peak current consumption for Transmitter and Receiver individually. The field cable runs must comply with local regulations.
  • Page 12 Electrical Installation Dräger Polytron Pulsar 2 maximum permissible power cable lengths The following tables give the maximum cable lengths for differing worst case power supply voltages and core sizes. In using this information please note that the worst-case (lowest possible) supply voltage should be used not the nominal stated.
  • Page 13 Electrical Installation Cable run in metres: To Receiver only Worst case supply: 26V...32V 1 mm 1.5 mm 2.5 mm 1049 1224 1399 1573 4 mm 1119 1399 1678 1958 2238 2517 18 AWG: 5118 17 AWG: 16 AWG: 15 AWG: 1039 14 AWG: 1019...
  • Page 14 1) Ensure that voltage specifications for the Dräger Polytron Pulsar 2 are not exceeded. See “Specifications” section for further information. 2) When the AI500 Digital Interface is used the capacitance of the cable(s) linking it to the Dräger Polytron Pulsar 2 should not exceed 100nF (e.g.
  • Page 15 Electrical Installation Figure 4: Connection diagram powered via Trannsmitter Transmitter Receiver terminal box terminal box connections connections Link Cable Link Cable to Transmitter cable to Receiver screen +24Vdc +24Vdc 0-20mA 0-20mA Digital Digital Common +24V dc Common Blanking 0-20mA Plug Digital supplied cable...
  • Page 16 Electrical Installation Figure 6: Connection diagram powered individually Transmitter Receiver terminal box connections terminal box connections See note 2 cable screen cable screen Blanking Plug supplied Blanking Plug supplied EEx e gland supplied fitted Transmitter Receiver head unit head unit (See notes 4 and 5) NOTES: 1) Glands to be EEx e type e.g.
  • Page 17 Cabling the EEx d Certified Connector Dräger Polytron Pulsar 2s supplied with the EEx d certified plug and socket come with the plug fitted to the Dräger Polytron Pulsar 2 end plate. The socket also supplied, requires connecting to the field wiring which in turn is then connected to suitable DC power supply and control equipment.
  • Page 18 Figure 9 for termination descriptions (e.g. pin 1 = digital, pin 2 = 24V, pin 3 = 0-20mA, pin 4 = Common). IMPORTANT It is critical that each pin is fitted to the correct location; failure to do so may result in damage to the Dräger Polytron Pulsar 2.
  • Page 19 Cabling the EEx d Certified Connector Figure 9: Cable preparation and wiring Pair 1 core to CEAG socket pin 4 (-ve common) Pair 1 core to CEAG socket pin 1 (digital) Pair 2 core to CEAG socket pin 3 (4 - 20mA) Pair 2 core to CEAG socket pin 2 (+ve 24V) Outer sheath Steel/wire braid...
  • Page 20 Cabling the EEx d Certified Connector Figure 10: Connection diagram powered individually using CEAG EEx d connector Transmitter Connections Receiver Connections Rear of eXLink Rear of eXLink socket socket (See notes 2 and 3)
  • Page 21 Carefully unpack the equipment and check the contents of the boxes against the packing note. In case of shortages or damage contact the carrier, Draeger Safety UK Ltd. or the distributor immediately. Mount the Dräger Polytron Pulsar 2 on a suitable structure, ensuring that the beam path meets the criteria laid down in section “Install- ing The Dräger Polytron Pulsar 2”.
  • Page 22 11 characters long. Although not required for correct operation of the detector, a meaningful tag that identifies the location of the Dräger Polytron Pulsar 2 is strongly recommended. It becomes part of the data logger records read out in future, allowing their source to be known explicitly rather than by tracing serial numbers.
  • Page 23 Installing and Commissioning the Dräger Polytron Pulsar 2 Step 1. Initial Receiver alignment Select in the 'Rx Align + Zero' menu to put the Receiver into its Alignment Mode. Digital signals from the Receiver will in turn com- ALIG mand the Transmitter to flash in its Alignment Mode (an irregular flash sequence) and cause the Handheld to show an Alignment screen.
  • Page 24 For preference choose a time when the weather is dry, the temperature moderate, and the Dräger Polytron Pulsar 2 has been powered for at least 30 minutes.
  • Page 25 Planned Maintenance 1 The Dräger Polytron Pulsar 2 has been designed so that it will give long and reliable service with the minimum of maintenance. The Dräger Polytron Pulsar 2 will warn the operator if the Optics become contaminated or if it becomes misaligned for any reason.
  • Page 26 Specification Specification Housing Electro-polished ANSI type 316 marine grade stainless steel Brackets Electro-polished ANSI type 316 marine grade stainless steel Cover ABS moulded plastic Lens Treated optical glass. Integral Cable Armoured, flame retardant, halogen free, MUD resistant (if fitted) Operating range 4 to 60m, 30 to 120m or 100 to 200m Transmitter to Receiver Operational limit -40°C to +60°C (-40°C to +140°F), 800 to 1100 hPa, 0 to 100% r.h.
  • Page 27 Certification Dräger Polytron Pulsar 2 Transmitter and Receiver NOTE The Dräger Polytron Pulsar 2 is one of the family of Detectors certified under the designation GD8. All certif- icates will refer to the GD8. International Certification IECEx certificate number IECEx SIR 04.0006...

  • Page 28: Accessories List

    Dräger Polytron Pulsar 2 ATEX 4-120m (RX only Ethylene) 2350341 Dräger Polytron Pulsar 2 ATEX 100-200m (RX only Ethylene) Part number Dräger Polytron Pulsar 2 with ABS moulded cover and EEx d certified plug and socket connectors 2350496 Dräger Polytron Pulsar 2 ATEX 4-60m (Complete TX + RX) 2350497 Dräger Polytron Pulsar 2 ATEX 30-120m (Complete TX + RX)

  • Page 29: Fault Finding Guide

    Pre warning (see above) and inhibit alignment and re-zeroing. Be aware that spurious 'faults' may be caused if the Draeger PLMS Dräger Polytron Pulsar 2 is used with control equipment from other manufacturers without sufficient attention to detail. Analogue loops are inherently prone to small drifts. Thus a system programmed to rec- ognise any current outside 4 to 20mA as Fault will do so if a zero gas reading drifts to 3.99mA.
  • Page 30 Fault Finding Guide Problems relating to the Transmitter Symptoms Cause Action The detector outputs Beam-block. The HHT The Transmitter is not powered Check power supply and cabling receives data only a few times a minute. The Transmitter is not flashing The Transmitter has an internal fault Remove the Transmitter head and gimbal assembly from its mounting, replace it with a...
  • Page 31 Fault Finding Guide Problems relating to the Receiver. Symptoms Cause Action The detector output is at Fault (<1mA). The The Receiver is not powered Check the power supply and cabling HHT receives no data The Receiver has an internal fault Remove the Receiver head and gimbal assembly from its mounting, replace it with a spare with the same configuration, and...
  • Page 32 RS 422/485 that may be hard-wired into a system. It can be used to configure the tag identification string and multi-drop node address of the AI500, and also to link through the AI500 to any of the four Dräger Polytron Pulsar 2 Receivers connected to it. In this way the Termi- nal provides all the same functions that it would do if connected directly to the remote Receiver in its possibly inaccessible location.
  • Page 33 STOP 4 More… more You can test control equipment connected to the Dräger Polytron Pulsar 2 Receiver by imposing a current on its 4 to 20mA current loop output. + and - allow the test current to be stepped up and down from 0.0 to 20.0mA in 0.5mA increments, starting from 4.0mA.
  • Page 34 TR/A option lists the serial numbers and tag strings of the Dräger Polytron Pulsar 2 Receivers whose data logger records are available for transfer as File1, File2 and File3 when the appropriate Draeger PLMS software is run on the computer. The...
  • Page 35 The Draeger PLMS Handheld Terminal is intended for use in Hazardous Areas in conjunction with the Draeger PLMS Dräger Polytron Pulsar 2. In non-Hazardous Areas it may be connected to the Draeger PLMS AI500 Digital Interface or a personal computer. For connection details refer to “The Dräger Polytron Pulsar 2 Digital Interface AI500” section of the Dräger Polytron Pulsar 2 installation manual.
  • Page 36 The Handheld Terminal The GC2 handheld Terminal Certification Label Explained 110mm ÿ12mm typ 4 posn 91mm Draeger PLMS Ltd. Label approved to CSAC22.2 No. 0.15 Serial Number Plymouth UK Worldmark product code SP9625. XXXXXX/YY HANDHELD TERMINAL TYPE GC2 Non- adhesive side Fine Textured Adhesive: EEx ib IIC T4 (Tamb -20 C to 45...
  • Page 37 The Handheld Terminal Figure 12: Draeger PLMS handheld terminal Draeger PLMS Ltd. Plymouth, UK BATTERY INSIDE Approved Battery: Duracell or Procell MN 1604. WARNING! DO NOT CHANGE BATTERY IN A HAZARDOUS AREA...
  • Page 38 Data Wand to download the diagnostic information into a notebook PC. The file can then be examined locally or e mailed. In all cases, the Hand-held Terminal (or Communicator) is able to call up any one of the Dräger Polytron Pulsar 2 Receivers connected to the AI500 and has the same functionality as if connected to the field unit at its possibly inaccessible location.
  • Page 39 Terminals 1,3,5,7,9,10 and 11, 12 are linked internally. The Digital I/O ports A, B, C and D communicate bi directionally with up to four Dräger Polytron Pulsar 2 Receivers. They are compatible with all variants of the Dräger Polytron Pulsar 2 but not with GD series detectors.
  • Page 40 The Dräger Polytron Pulsar 2 Digital Interface AI500 Connector 3: Hand-held Terminal Port Terminal: Optical Isolator Function: Emitter (volt-free output -) Collector (volt-free output +) Anode (volt-free input +) Cathode (volt-free input -) Removable polarised connector Phoenix Contact MC 1.5/06-ST-3.81, 1.5mm (16AWG) The adaptor cable Draeger-PLMS 2350326 allows connection of the Handheld Terminal (or Communicator).
  • Page 41 HART data should never be used for safety-critical purposes. For installation instructions, refer to the documentation supplied by the man- ufacturer of the multiplexer to be used, and by Emerson for the AMS system. Although Dräger Polytron Pulsar 2 is not intended to be used in a HART multidrop configuration (not to be confused with the RS485 multidrop shown above) for normal operation, it is possible...
  • Page 42 Dräger Polytron Pulsar 2 Transmitters of the same type can be interchanged at will.) 5 Dräger Polytron Pulsar 2 is not intended to be used in a HART 6 Date- Gregorian calendar date that is stored in the Field multidrop for normal operation. However, several Pulsar Device.
  • Page 43 3 The 4-20mA Analog Output is at Beam-block level (2mA). The 4 The supply voltage at the Receiver end of its cable is out of lim- Dräger Polytron Pulsar 2 is unable to detect gas for some rea- its. This is not yet affecting the operation.
  • Page 44 1 The Analog Output is at Beam-block level (2mA). However, the 2 Gas reading shows a negative value. Before re-zeroing please cause has been removed and the Dräger Polytron Pulsar 2 is check for obstructions in the beam, misalignment or lens con- expected to restart operation in a few seconds.
  • Page 45 Figure 18 Configuration Properties of AMS Tag (Basic Set up) 1 Final Assembly Number- Number that is used for identification 2 Lower Range Value - For Dräger Polytron Pulsar 2 this value is purposes, and is associated with the overall Field Device.
  • Page 46 AMS operator screens and help texts Figure 19 Configuration Properties of AMS Tag (HART Setting) 1 Universal Revision- Revision of the Universal Device Descrip- 2 Field Device Revision- Revision of the Field Device Specific tion that the Field Device conforms to. Device Description that the Field Device conforms to.
  • Page 47 Dräger Polytron Pulsar 2, not the Duct-Mounted version. gas is expected to be uniformly diluted across the beam path. The Dräger Polytron Pulsar 2 can then be configured to output 0-100 %LFL. 5 Issue of the Receiver Main Processor firmware (23 = version 6 Issue of the Receiver HART Processor firmware (23 = version...
  • Page 48 'WARN'. The warnings are for: Optics; Receiver Supply; Receiver temperature; Receiver Alignment; Transmitter; Trans- mitter Alignment. Please refer to the Dräger Polytron Pulsar 2 Status tab for their individual descriptions. 3 Proper selection of Channel avoids interference with other instru- 4 Auto-Zero Tracking allows small gas readings that persist for a ments nearby.
  • Page 49 Figure 22 Configuration Properties of AMS Tag (Configuration) 1 Auto Zero Tracking rate - When enabled AZT allows small gas 2 If the beam is obstructed (or Dräger Polytron Pulsar 2 is una- readings that persist for a long time to be interpreted as zero ble to provide a valid gas reading due to any other reason) for drift and automatically cancelled.
  • Page 50 Transmitter and Receiver need cleaning. 5 The value of 'Operation Hours' recorded the most recent time 6 The Dräger Polytron Pulsar 2 was set to this channel when last the Dräger Polytron Pulsar 2 was zeroed. zeroed.
  • Page 51 Figure 24 Configuration Properties of AMS Tag (Gas table) 1 Up to four Gas Tables can be factory-installed in the 2 Standard of LEL values being used to calculate table Dräger Polytron Pulsar 2 Receiver. One of those can be IEC: IEC 60079-20 selected to best suit the application.
  • Page 52 Declaration of Conformity Declaration of Conformity EC DECLARATION OF CONFORMITY Draeger Safety UK Ltd Drakes Court Langage Business Park Plymouth PL7 5JY England Declare that Gas Detector type GD8 In accordance with Directive 94/9/EC (Equipment and protective systems intended for use in potentially explosive atmospheres), is in conformance with the EC-Type Examination Certificate Sira 00ATEX1175 For equipment group and category...
  • Page 53 Declaration of Conformity...
  • Page 54 Declaration of Conformity...
  • Page 55 Declaration of Conformity...
  • Page 56 Declaration of Conformity...
  • Page 57 Dräger UK Limited Ullswater Close Blyth Riverside Business Park Blyth, Northumberland NE24 4RG, United Kingdom Tel. +44 (0)1670 352 891 +44 (0)1670 540 033 www.draeger.com Distributed in the US by: Dräger Safety, Inc 101 Technology Drive Pittsburgh, PA 15275 Tel: +1 412 787 83 83 Fax: +1 412 787 22 07 Telex: 0230866704 90 23 892 - GA 4675.892 en...

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