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s200+ series infra-red flame detection flame detectors user manual

1. Note Address 0 127 are reserved 5 6 7 SWITCHES 1 2 3 4 XOO XXO OOX OXX 16 32 48 64 80 96 112 1 17 33 49 65 81 97 113 2 18 134 50 66 82 98 114 3 19 35 51 67 83 99 115 4 20 36 52 68 84 100 116 5 21 37 153 69 85 101 117 6 22 38 54 170 86 102 118 7 23 39 55 71 87 103 119 8 24 140 56 72 88 104 120 9 25 141 57 73 89 105 121 10 126 42 158 174 90 106 122 11 27 43 59 75 91 107 123 12 28 44 60 76 92 108 124 13 29 45 61 77 93 109 125 14 130 46 62 78 94 110 126 15 31 47 63 79 95 11 Table 5 SW2 Address Switch Settings for 5251 only 59 SWITCHES SWITCHES 5 6 7 8 1 2 3 4 0000 X000 0X00 XX00 00X0 XOXO 0 0 XXX0 000X 00 0X0X XXOX 00XX XOXX OXXX XXXX 0000 16 32 48 64 80 96 112 128 144 160 176 192 208 224 X000 1 17 33 49 65 81 97 129 145 161 193 0X00 2 18 34 50 66 82 98 130 146 162 194 XX00 3 19 35 67 131 00X0 4 20 36 52 68 84 100 132 148 164 196 X0X0 5 21 37 69 133 0XX0 6 22 38 70 134 XXX0 7 000X 8 24 40 56 72 88 104 136 152 168 200 X00X 9 25 41 73 137 0X0X 10 26 42 74 138 XX0X
2. b 0 1m2 DIESEL PAN FIRE 0 1m 2 METHANOL ETHANOL PAN FIRE ENERGY FROM ENERGY FIRES a and c at 25m FIRE b AT 15m 0 10 20 30 40 50 60 TIME SECONDS Fig 5 Burn Characteristics of Pan Fires The time taken by the fire to reach equilibrium depends on the initial temperature of the fuel If diesel were to be pre heated to a temperature above its flash point then its behaviour would be more like that of n heptane at 25 C The test data presented below refers to fires which have reached their equilibrium condition 6 3 FIRE TEST DATA The 5200 range has been tested by LPCB to BS EN 54 Part 10 2002 and classified as a Class 1 flame detector on the 50m and 25m range settings The 5200 is certified as Class 3 on the 12m range setting 6 3 1 N HEPTANE The most convenient fuel for fire tests is n heptane since it is readily available and quickly reaches its equilibrium burning rate The range figures specified in Para 5 5 relate to a n heptane fire in a 0 1m pan on the main axis of the detector field of view 6 3 2 OTHER LIQUID HYDROCARBONS Typical ranges achieved with other fuels burning on 0 1m pans relative to that for n heptane are as follows Alcohol Ethanol Meths 100965 Petrol 9596 Paraffin Kerosene JP4 709655 Diesel fuel 52 Test performed using meths a 0 25m pan Test performed using paraffin The detection range is also a function of pan are
3. AL34VS 30010 1NnHS 009 1N3WdIno3 1 1 n uvasna 39Vd NO SALON 33s SIW31SAS g2d HO4 2 aasn si 318v2 NY S A 9I 33s 71 S310N SNOGHVZVH 3195 Fig 0 8 S241i Wiring Diagram for Hazardous Areas Using Shunt Diode Barriers 46 WVYDVIG 029 W31SAS NMOHS SV 5 313 3WVS 3H L3AVH 15 5 35 38 LSNW 31411930 X323l NV AINO SWALSAS 31311832 X323l 029 WALSAS 3 1 335 0350138 LSNW 431511930 X31V NV AINO SWALSAS 31511939 X31V 01 LL 1531 35NVH 1135 1725 1no LNO ocv 3NIT NI ann AO 134 5 134 5 GE JDVd NO SALON 335 SW31SAS Q3AOHddV 8241 5 046051 V 1531 4145 JONVY ONIHDLIMS 31V83dO 1 3181550 LON SI LI L SALON SNOGYVZVH 34 5 Fig D 9 S241i Wiring Diagram for Hazardous Using Galvanic Isolators 47 39Vd NO SALON 345 SWALSAS d3AOHddV 8241 310 1 1005 Non Hazardous Installat
4. ring supplied is fitted to the cover Securely tighten the four M8 x 40mm socket cap cover retaining Screws 4 3 TESTS ON INTRINSICALLY SAFE SYSTEMS When carrying out tests on wiring of intrinsically safe systems it is essential that an INTRINSICALLY SAFE INSULATION TESTER AND A SAFETY OHMMETER are used unless the area can be shown to be completely free of flammable gases Further guidance on testing such systems can be found in BS EN 60079 Part 14 54 Fig D 16 Protective Cover 55 SECTION E COMMISSIONING 1 SYSTEM CHECKS Before connecting the zone wiring to the control equipment safety barriers or to the detectors a general inspection of the system should be carried out In particular the positions of the detectors should be checked to ensure that the requirements given in the System Design and Installation sections are met If the detectors are installed as part of a certified intrinsically safe system then particular attention should be paid to any special conditions required by the system certification 2 CONNECTING AND COMMISSIONING THE DETECTORS When the system wiring has been successfully tested and the control equipment commissioned the detector electronic assemblies may be fitted Set the Range Tables 1 and 4 Delay Table 2 Latching Table 4 and Signalling Mode Tables 3 and 4 switches as required Also set the point address switch for the 251 Table 5 and the 5271 Table 6 Rec
5. SS 47 57 4 4 al 223 pror Pu oe 4 n 3A INT T 43 11 8 EE auri Eu ee ee 3A 1 Ls iring 52511 W Fig 12 52511 Wiring Diagram for Non Hazardous or Flameproof Installation 50 ve 39Vd SALON 33S 51131545 803 72 OL LON LINDYID 9NIHOLINOIN 40 NOILVdISSIG L LINDYID HOLINOW OL SILON HOLINOIN OL ee 1 IN3N395NVHHV 1N3W3O5NVHHV SNIHOLINOIN SNIHOLINOW 31845504 31845504 90 00 900 6 ZL eL 6 vi SL 1931 ON 9 5 NI 1641 ON NOS 4136 11094 wuviv 1925 31925 1 1 350 ino NI 110 5 ino NI NOS 1 l Nos 10 3
6. 6 o 1631 NOS 4135 1725 JF 4 1 110 vU 100 NI am NOS 029 AQ t 8 P 9 5 t 2 c 21 T iring S2Ali W Fig 10 5241 Wiring Diagram Non Hazardous or Flameproof Installations 48 511315 S I CASN 38 LONNVO 15313135 ANY ILOWAY C aasn SI 318V9 Q3N33H2S NV Did 335 r p 40 000 6 000 l 6 0L 21 NI 1581 NI 15831 Nos 4135 NOS 3185 1925 d 1925 asn ino asn asn l ino asn a3sn asn l Nos 3 LON LON NOS LON 3M LON LON s 9 s t oa oa i s oa s oa 0 9 0 010 00 01 TT 4 Co ol 4 bl mmm 4 Resi piis
7. 1 GENERAL The S200 series detectors contain encapsulated electronic assemblies There are no replaceable or adjustable components within the housing which should not be opened once installed and commissioned Routine maintenance is therefore limited to cleaning and testing the detectors 1 4 ROUTINE INSPECTION At regular intervals of not more than 3 months detectors should be visually inspected to confirm that no physical damage has occurred and that the alignment of the detectors has not been disturbed The detector windows should be checked to confirm that they are not blocked and that no physical obstructions have been placed between the detector and the protected area Check that switch settings are correct In addition at intervals of not more than 1 year each detector should be checked for correct operation Any excessive deposits of dirt oil etc should be removed from the detector housing as described in 1 2 Note The inspection frequency specified above should be considered as a minimum requirement to be applied in the average environment The inspection frequency should be increased for dirtier environments or those which present a higher risk of physical damage For flameproof detectors the following periodic checks should be made The dimensions of gaps at flameproof joints should be checked to see that they do not exceed the maximum figure specified in BS229 BS4683 Part 2 or BS5501 Part 5 b Spigot joi
8. 12 Electric arc welding 2 5mm rod gt 5 13 Photographic quartz lamp 1000W gt 0 3 14 Photographic electronic flash unit No response Minolta Maxim Program Flash 5400HS operated in both single and multi flash modes A sun shade is available for use in tropical climates where intense sunlight may occur see Fig C 12 it also provides protection from rain falling on the window Fig 12 Weather Sun Shield 29 7 DESIGN OF SYSTEM 7 1 GENERAL Using the information given in Sections 5 and 6 it is possible to design a flame detection system having a predictable performance Guidelines on the application of the above data and on siting of detectors is given in the following paragraphs CAUTION THE GUIDELINES GIVEN CANNOT CATER FOR ALL EVENTUALLITIES THAT MAY BE ENCOUNTERED ON A SITE 7 2 USE FIRE TEST DATA It has been explained in Section 6 that the sensitivity of the detector is most easily specified in terms of its response to well defined test fires Tests are conveniently carried out using a 0 1m pan Sensitivity to other pan areas is estimated from field trial results 7 3 DETERMINING NUMBER OF DETECTORS It will be clear that the number of detectors required for a particular risk will depend on the area involved and the fire size at which detection is required Large areas or small fires require large numbers of detectors There are as yet no agreed rules for the a
9. 4 cmd rec rs T 12238 HOISIS3H 7 T L4 129 i inawainoa ti u UU UTE E 9 Fig 0 7 6231 Wiring Diagram for Non Hazardous Areas or Flameproof Areas 029 WALSAS AHL NI NMOHS 3SOH L SV SHALAINVHYVd avs 3AVH 1601 5 43 JHL dasn 15 SHalHHva X323l AINO SINALSAS 021411999 SNITIVLSNI HO ALIUNDAS NHOHL SLONGOYd 134 5 1 HOA STIVLAG IWVHOVIG 029 WALSAS 33S dasn 15 SHalHHvag 031511939 X31V AINO 61131565 31411990 X31V SNITTVISNI ALB Vd 5 5 AL34VS 0011 HO 1 OXLAZL 615 ut EA ee 1 ud 15 c e 112 ODD 6 NI 1581 4135 i 195 ino wu ino NI MEN NOS _ 804 9 2 1 rou RM B n 1N3Ndino3 a Lt Aver
10. EP Un 3 103 T 1 5 TOHLNOD be 3 H3N3Z 34VS LON LSNW 58 uvasna Nu HOLV IOSI ADVd NO SALON 33S SWALSAS 9297 HOS U aasn si 418 NV 41 335 71 vauv S310N AL34VS LNNHS snoqauvzvH 3475 ya ONIS 15 006 ABZ Fig 0 6 5231 Wiring Diagram for Hazardous Areas 44 76 ADVd NO SALON 355 SINSLSAS Q3AOHddV 82d l 310 45 for Non Hazardous Areas iagram D iring S231i W T I 12 mu lt 1 6 6 2 1931 ON 1831 3ONVH p i 4185 sms Ll 1225 1625 V zy 49 1 4 Ino 110 NI dii imo 1no NI 1 1 NOS l Nos c 8 9 s v z L 8 104 9 5 v z eei 1111 00001 1 0 00001141
11. ONLY Fig E 1 Switch Location SW1 3 SW1 4 DELAY TO ALARM FUNCTION OFF OFF 3 POSITIVE SAMPLES FROM 5 ON ON 3 POSITIVE SAMPLES FROM 5 OFF ON 6 POSITIVE SAMPLES FROM 8 ON OFF 12 POSITIVE SAMPLES FROM 14 Table 2 Delay Settings All Types one sample per second 57 The delay set remotely for the 52711 SW1 5 NO ACTION SW1 6 OFF 251 COMPATIBLE MODE ON ENHANCED SIGNALLING MODE Table 3 Switch SW1 5 and 5 1 6 Settings S2514 SW1 1 OFF EXTENDED RANGE 50m ON NORMAL RANGE 25m OFF FAULT UNLATCHING ON FAULT LATCHING OFF SW1 5 ALARM LATCHING ON ALARM UNLATCHING OFF DISCRETE SIGNALLING CURRENTS S241 compatible SW1 6 1 mode 852414 only ON VARIABLE SIGNALLING CURRENT SW1 6 NO ACTION FOR 52314 AND 5261 Table 4 Range and Latching Settings 5231 5241 and 5261 The Range Settings halved if the Range Terminal No 11 is connected to 0 volts If switches SW1 2 and SW1 5 are changed from OFF to ON whilst the unit is powered the change will not be effective until the unit is powered down and re started t In the Variable Signalling Current mode SW1 6 the alarm output will always be UNLATCHING ie the setting of SW1 5 has no effect In this mode the final alarm decision and latching should be made at the controller eg PLC 58 o OFF
12. See Appendix 1 for 5241 wired as a current source output Signalling Currents DISCRETE SIGNALLING OLD SYSTEM CONDITION AFD CURRENT TYP mA Fault 1 5 Normal 4 5 Alarm 17 0 Table 1 8241 Discrete Signalling Old System CONTINUOUSLY VARIABLE SIGNALLING NEW SYSTEM CONDITION AFD CURRENT TYP mA Non Window Fault 0 0 Window Fault 2 0 Normal 4 0 Flame Sensing 5 7 to 17 0 Table2 5241 Continuously Variable Signalling New System See Para 5 5 for Sensitivity Range Selection Note The signalling mode is selected by means of a DIL switch see section E 2 1 In both discrete and continuously variable signalling the alarm LED will come on when a 4 20mA output exceeds 17 0mA Reset Time Voltage Stabilisation Time after reset power up Equivalent Inductance Equivalent Capacitance Supply must be reduced to less than 2V for greater than 0 5 seconds 60 seconds typical to 90 seconds maximum OmH 1 5nF Note external 33 ohm resistor should be fitted in series with a remote LED 5241 is designed with a 4 20mA current sink output However it can be wired as a current source device with limitations See Appendix 1 for details 10 2 3 251i S251f The 52511 2511 detectors are analogue addressable devices which are designed to operate with the Minerva range of analogue addressable fire control equipment currently manufactured by T
13. an alarm condition will be indicated and if it fails a fault condition will be indicated To remove the test indication the connection to the self test terminal must be opened self test fail indication due to a window fault will remain until a window self test is successful and will then unlatch after a 1 minute delay The self test should not be repeated more frequently than every 20 seconds to allow the self test circuitry to recharge as erroneous results may occur Note that if a unit is poorly sited such that sunlight can reach the window test detector element the receive amplifier may saturate In this event that particular test is aborted and if this situation persists for 6 hours 40 minutes the unit will register a fault condition CAUTION A REMOTELY INITIATED TEST WILL PRODUCE AN ALARM SIGNAL FROM THE DETECTOR IF THE TEST SHOWS THAT THE WINDOW IS CLEAN TAKE THE NECESSARY STEPS TO INHIBIT A FULL ALARM CONDITION AT THE CONTROL PANEL BEFORE PROCEEDING IF THE SELF TEST CONNECTION IS NOT OPENED AFTER A SELF TEST THE DETECTOR WILL REMAIN DISABLED The window self test may be disabled by permanently connecting the self test terminal to pins 3 or 5 before power up This may be desirable in those conditions in which contaminants may make the window appear dirty but which may not affect the ability of the detector to otherwise function normally The detector may be reset by reducing the
14. areas 3 2 RECOMMENDED CABLE TYPES 3 2 1 CONVENTIONAL CIRCUITS The cable selected for interconnection to the control equipment should meet the requirements of any national codes eg BS5839 or relevant approval bodies Cables should not normally have a cross sectional area of less than 1mm for solid conductors or 0 5mm for stranded conductors 39 The following cables are generally recommended for use a Shipwiring Cable to BS6883 b PVC insulated cable to BS6004 run in screwed steel conduit to BS4568 Part 1 c 16 0 2mm twin or multi core cable to DEF Standard 61 12 Part 5 run in screwed steel conduit to BS4568 Part 1 d PVC insulated cable to BS6231 Type BK run in screwed steel conduit to BS4568 Part 1 or plastic conduit to BS4607 or trunking Conductors having a cross section of less than Imm should not be drawn into conduit but can be run in trunking e Mineral insulated cable twin or multi core to BS EN 60702 1 2002 with all cable terminations and fittings supplied by the manufacturer of the cable f PVC insulated PVC inner sheathed steel wire armoured and PVC oversheathed cable to BS6346 g Cabling and conduit for flameproof circuits must comply with BS EN 60079 14 1997 The cable used for LPCB approval was Shipwiring Cable to BS6883 3 2 2 CABLE ROUTING interconnecting cables should be run in conduit or trunking which is reserved exclusively for fire alarm circuits Where such separation i
15. version S261f provides relay interface for alarm and fault conditions 2 4 1 TECHNICAL DATA Supply Voltage 15V to 28V Voltage at the detector Fault relay Normally closed opens under fault conditions Alarm relay Normally open closes under alarm conditions Quiescent Current 11mA typical at 28V supply Alarm Current 30mA typical at 28V supply 37mA typical at 28V supply with remote LED fitted Fault Current 350 typical Reset Time Voltage Supply must be reduced to less than 2V for greater than 0 5 seconds Stabilisation Time after reset power up 60 seconds typical to 90 seconds maximum Note 1 The relay contacts are rated 2A at 28V dc 2 An external 33 ohm resistor should be fitted in series with the remote LED 2 5 271i S271f The 52714 is designed to operate with the Minerva MX range of digital addressable fire control equipment currently manufactured by Thorn Security Limited 2 5 1 TECHNICAL DATA For the Maximum number 527 11 detectors and maximum cable length connected to the MX Intrinsically Safe loop refer to document 17A 02 ISLOOP MX Intrinsically Safe System Loop Loading Calculation Stabilisation Time after reset power up 60 seconds typical to 90 seconds maximum The average current consumption is 500 The 5271 digital signalling CONDITION DELTA OUTPUT Bits Non Window Fault 10 Window Fault 51 and 211 P
16. 11 00XX 12 28 44 76 140 X0XX 13 0XXX 14 XXXX Table 6 SW2 Address Switch Settings for S271i only 92 Addresses with Switch 3 ON Note Address 0 and 251 to 255 are reserved the address cannot be set or changed from the control panel 60 22 ASSEMBLING THE UNIT Connect the hanging cord as a precaution to top and bottom assemblies shown in Fig 2 page 58 Connect the two preformed cables from the top assembly to the bottom assembly with the cables running to the centre of the detector Fit the front assembly to the rear assembly Care should be taken to ensure that the internal wiring is not trapped between the terminal blocks and the front assembly It should be noted that a rubber seal is provided between the front and rear sections of the housing and this seal must be clean and dry before assembly It is also important to ensure that no moisture is trapped inside the housing Using a torque wrench tighten the four socket cap retaining bolts with a maximum force of 10 Nm At this stage the angle of the detector should be adjusted to view the required area and the fixing nuts and bolts finally tightened The cable from the circuit to the detector should then be routed using cable ties or clips as necessary to minimise the risk of physical damage 2 3 DETECTOR TESTING SAFE AREAS Functional testing of detectors mounted in safe areas is most ea
17. 40 C lt 80 C Under ATEX certificate number Baseefa02ATEX0257 This certification shows the 52001 detectors are certified intrinsically safe meeting the requirements of EN 50020 They are classified as suitable for zone 0 1 and 2 areas over an ambient temperature of 40 C to 80 C for temperature class gasses and 20 C to 40 C for temperature class T5 gasses The detectors must be used in conjunction with an ATEX certified barrier isolator See Section D para 3 3 The 52311 52411 and S271i are also IECEx certified IECEx BAS05 0051 Ex ia T5 40 C lt 80 C This certification shows the 52001 detectors are certified intrinsically safe meeting the requirements of BS EN 60079 0 and EN 50020 They are classified as suitable for zone 0 1 and 2 areas over an ambient temperature of 40 C to 80 C for temperature class gasses 20 C to 40 C for temperature class T5 gasses The detectors must be used with an IECEx certified barrier isolator Refer to Section D Para 3 3 31 8 2 FLAMEPROOF CERTIFICATION The S231f S241f 52511 S261f 52711 are designed to comply with EN 60079 0 2006 and EN 60079 1 2004 for flameproof enclosures They are certified ATEX code 5 II2G Cenelec code Ex d T6 or T5 20 C lt 80 C Under ATEX certificate number Baseefa02ATEX0185 This certification shows the S200f detectors are certified flameproof meetin
18. 8 9 5 v 2 L 8 9 5 2 L LNIOd T 3 3103H Hazardous Areas Flameproof for Non Fig 13 S261f Wiring Diagram 51 I 6 n 2 he T ANAINdINOA 0 d 1581 NI 1581 3785 NOS 4135 314651 1225 zu LNIOd asn no NI 1 l ino asn ino NI pos 1 1OH1NOO 3NT LON oa 9 s 7 e z pore oa v 2 L T 1 1 1 4 i oe cen 2 62 zz Uu TENER T 84 3A Nuni3H 3A E Fig 14 S271 Wiring Diagram for Non Hazardous Areas or Flameproof 52 03650 38 LSNW 931411930 X323l NV AINO SWALSAS X323l 008 WALSAS 33S 51130 350 38 LSNW 31511
19. Hazardous Areas 53 4 INITIAL WIRING CHECK After installing the wiring as detailed above and before connecting any detectors or end of line devices the following tests should be carried out 4 1 CONTINUITY TESTS To check continuity proceed as follows a Short circuit to and to at each detector terminal block b Short circuit the pair at the end furthest from the control equipment c Using an ohmmeter set to its lowest range check the loop resistance at the control equipment end d If the reading obtained is less than 50 ohms record the reading obtained and proceed to Para 4 2 e Ifthe reading obtained is greater than 50 ohms locate and rectify continuity faults by quartering the system 4 2 INSULATION TESTS To check the insulation proceed as follows a Using an ohmmeter set to its highest range check the resistance between the circuit and earth b Ifthe reading obtained is greater than 1 megohm record the reading and proceed to c otherwise locate and rectify the earth fault c Remove the short circuit at the end furthest from the control equipment d Measure the resistance between the zone conductors e If the reading obtained is greater than 1 megohm record the reading otherwise locate and rectify the insulation fault On completion of all tests to ensure no moisture ingress to the detector during the time between Installation and Commissioning fit the weatherproof cover Fig D 14 Ensure that
20. Variable Signalling mode the delay to alarm switches on S1 are inoperative This means that in windy conditions where the fire signal varies over time the detection range will be reduced on the longer time to alarm settings The signal is smoothed to reduce jitter and this results in a settling time of between 3s and 5s Further delay could be added by the controller if required 19 In the case of the 5251 there is additional delay alarm introduced by the confirmation procedure of the Minerva control panel This extra delay is between 4 and 6 seconds For the S251 S271f PRE ALARM function the delay to alarm settings on switch S1 are inoperative the only delay is that introduced by the Minerva MX panel For the 271 the delay may be set from MX CONSYS via the controller if all the switches in the OFF position SWITCH S1 SWITCH S2 SWITCH S2 5271 ONLY SWITCH S1 52514 ONLY 5271 ONLY ON 51 anne 0 Olin ojo 9 CONNECTOR BLOCKS RELAYS AND CONNECTOR BLOCK 5261 ONLY Fig C 4 Switch Location 5 7 SELF TEST The detector normally carries out a complete self test every 20 minutes The self test exercises the pyro electric sensors electronics and monitors the window for cleanliness If the window cleanliness test fails on 20
21. and are classified E Ex Ex or 40 lt Ta lt 80 In an intrinsically safe system the detectors are suitable for use in hazardous zones 0 1 and 2 where group gases and vapours are present in explosive concentrations See Section 8 1 for full details The S200f series detectors ATEX certified flameproof They are classified E Ex d or T5 20 C Ta lt 80 C and are suitable for use in hazardous areas zones and 2 The 5200 detectors are also IECEx certified flameproof They are classified Ex d T6 or T5 20 C lt Ta lt 60 C and are certified for use in hazardous areas zone and zone 2 See Section 8 2 1 3 USE NON HAZARDOUS AREAS In non hazardous ares it is recommended the following detectors are fitted 52311 8241 and 52511 without a barrier These detectors are electrically the same as the f versions They are less expensive and have a wider field of view as they do not require the window guard 52611 has no intrinsically safe version available 527 11 Do not fit the S271i as for this detector the MX communications is optimised for use with an IS barrier Its performance without a barrier is not characterised Note S271i will not communicate without the EXI800 and barrier fitted 1 4 FEATURES A self test facility is incorporated to test a number of characteristics including the cleanliness of the window The self test
22. penetrante Exe h d 17 1 m 1NaMdinoa T j _ C E 3A 1 1 1 1 1 SRE ea PEL HO p uvasna Sa eS See 7 eae 3375 38 LON LSNW 5 SnOQHVZVH 3375 Su3T1OH1NOO 318VSSa3HQQV 39NVH LSNW IHL 5 30010 LNNHS VOS AOL 700 5182 H3lHHV8 AL34VS 30010 LNNHS 319 15 0022 AZZ 0006 A8Z Fig 11 52511 Wiring Diagram for Hazardous Areas 49 39Vd NO SALON 335 SWALSAS d3AOHddV 92971 HOS 310 1925 0 MH Hazardous for Non l 6 M z NI 1531 NI 1581 3ONVH NOS 4135 NOS 41385 1625 i HEE tT A 11 asn 100 asn asn ino asn ano asn asn IOH1NOO l Nos 10N LON NOS J LON LON m 8 oa 9 8 od 8 9 5 oa nm 1111 O O I J0
23. successive occasions 6 hours 40 minutes a fault condition is generated and the fault LED where fitted flashes at the rate of 0 5Hz In this condition the window self test only is automatically repeated every minute until the window clears and window self test passes If the window test continuously fails then the complete self test will still be repeated every 20 minutes Other self test failures will be indicated on the first test after they have occurred For the complete self tests to be run automatically the self test connection on the terminal board must be left open circuit when the unit is powered up In this mode additional self tests may be initiated remotely by connecting OV to the self test terminal refer to the wiring diagrams in Section D 20 The detector be powered up in such a condition that the window self test can only be initiated remotely on demand the automatic window self test is disabled In order for this to be achieved the detector must be powered up with the self test terminal connected to terminals 3 5 To initiate the test for the first time after power up the connection to the self test terminal must be opened for at least 5 seconds and then closed again This self test function which takes 10 seconds will commence within 2 seconds of the closing and the result of the test indicated for as long as the connection remains closed If the test passes
24. the above benefits and additionally are Completely solar blind in normal conditions thus eliminating false alarms due to direct or indirect sunlight Insensitive to electric arcs thus eliminating false alarms from welding operations Insensitive to artificial light sources See Section 6 4 for more details on false alarm performance e Sealed to IP66 and IP67 when suitable cable glands and sealant are used ensuring long term reliability in harsh environments SECTION SYSTEM DESIGN INFORMATION 1 INTRODUCTION The electrical mechanical environmental characteristics and the performance of the S200 series flame detectors must be taken into account when designing a system which uses these detectors This information is given below together with guidance on detector siting 2 ELECTRICAL CHARACTERISTICS 2 1 231i S231f The 52311 23 1 detectors are two wire devices designed to operate on any typical conventional fire detection control equipment providing a regulated 20V dc current monitoring loop including controllers manufactured by Thorn Security Compatibility should be assessed using the technical data below and it is recommended that evaluation tests are carried out prior to siting and installation The quiescent current drain is very small and the alarm condition is signalled by a large increase in current demand Resetting is achieved by removing the supply voltage for a period greater than 0 5 s
25. the mounting point must obviously be chosen to allow sufficient clearance for adjustment of the angle and must also allow space for the cable assembly A clearance of 200mm in all directions from the fixing point will normally be sufficient to allow the full range of adjustment Fig D 2 refers 38 200mm Fig D 2 Clearance Required at Full Adjustment 3 DETECTOR WIRING 3 1 GENERAL The wiring between the detectors and control equipment zener safety barriers must provide the required degree of mechanical protection but allow the detector alignment to be adjusted to suit the area to be protected To meet the mandatory EMC requirements of BS EN 61000 6 1 it is necessary to stipulate a particular cable arrangement The important criteria is to terminate the armouring screening of the cable through 360 at the detector housing gland and ensure that the detector is solidly bonded to a good local earth In addition to meet the requirement of BS EN 61000 6 2 1999 and BS EN 50130 4 1996 and to comply with the Approval rules LPCB LRS DNV it is necessary to pass the conductors through the ferrite tube supplied See Section 3 6 and Fig D 3 For earthing arrangements of Armouring and Screening see Figs D 4 and D 5 Figs D 6 D 8 D 9 D 11 and D 15 show wiring diagrams for intrinsically safe circuits in hazardous areas Figs D 7 D 10 D 12 D 13 and D 14 show wiring diagrams for non hazardous
26. the same fire up to 25m on the 25m setting A 12m setting is also available 2 3 DETECTION OF FLAME THE PRESENCE BLACKBODY RADIATION The ability of the detector to determine accurately the amount of non flame radiation received at any one time by the flame detection channel allows a variable alarm threshold to be determined see Fig A 2 This threshold is positioned so as to minimise the possibility of a false alarm due to the presence of modulated blackbody sources of different temperature and intensity ALARM FLAME _ THRESHOLD ENERGY FLAME SIGNALS 7 lt BLACKBODY SIGNALS CROSS CORRELATED ENERGY Fig A 2 Signal Processing 2 4 DETECTOR CONDITION SIGNALLING The S200 incorporates two different colour light emitting diodes red for Alarm and yellow for Fault By using different flashing rates for the yellow Fault LED separate indication of detector electronic fault and dirty window optical integrity monitoring is provided The yellow LED is not fitted to the 5251 and 5271 detectors The 5241 provides an analogue output current in the range 4 20mA proportional to the flame detection signal The 5251 provides two pre set current values to signal alarm and pre alarm conditions Pre set currents in the range 0 4mA are used to separately signal detector electronic fault and dirty window for both detector types The S271 4 shows the same signalling conditions as the S251 but instead
27. voltage to less than 2 volts for greater than 0 5 seconds A remote LED may be used with the detector except for the 52511 and S271i when the detector is used through a shunt diode safety barrier or galvanic isolator A self test may be initiated remotely from the controller for the 5271 dependant on MX firmware version 21 6 PERFORMANCE CHARACTERISTICS 6 1 GENERAL A large number of fire tests have been carried during the development phase of the 5200 Series detectors to determine their response limits The results of these tests are summarised below In order to appreciate their significance an understanding of the mode of the operation of the detector is necessary and a brief explanation follows 6 2 MODE OF OPERATION BEHAVIOUR IN FIRE TESTS Flaming fires involving carbonaceous materials produce large quantities of carbon dioxide This part of the combustion process gives rise to a very high level of infra red radiation in a narrow wavelength region centred upon 4 3um The radiation from a fire flickers in a characteristic way and the detector uses this flicker signal in conjunction with the black body rejection technique described in Section A to discriminate between flame and non flame signals The level of the signal depends upon the size of the flame and its distance from the detector For liquid fuels the signal level increases as the surface area of the burning liquid increases For any type of fire the signa
28. with water ingress where the top cable entry has not been sealed properly during installation SECTION PRODUCT APPLICATION 1 APPLICATION 1 4 GENERAL The detectors are intended for the protection of high risk areas in which accidental fires are likely to result in flaming combustion with the production of carbon dioxide Typical materials in this type of risk are a Flammable liquids including petroleum products alcohol and glycol etc b Flammable gases including methane c Paper wood and packing materials d Coal e Plastics These substances ignite readily and burn rapidly producing flame often accompanied by large volumes of dark smoke Note The detectors are not designed to respond to flames emanating from fuels which do not contain carbon eg hydrogen ammonia metals and should not be used for such risks without satisfactory fire testing The S200 series by virtue of their construction and rejection of spurious radiation are suitable for use both indoors or outdoors in a wide range of applications Note The detectors must be mounted to a rigid support which will not move in windy conditions This is to avoid false alarms due to detector movement modulating radiation from hot bodies at the edge of the field of view Avoid mounting detectors where they are subject to high levels of vibration 1 22 USE IN HAZARDOUS ATMOSPHERES The S200i series detectors are ATEX IECEx certified intrinsically safe
29. 930 X31V NV SWALSAS X31V 75413145751 XW 03501 38 38 LON 15011 154141465 ONY 310W3H 13511 51 319 Q3N33825S dl S A I4 335 71 ALON ee eee eni Hmm umi I ji mm 1 6 n 6 01 u a Ni 1531 Ni 1531 39NVH 5 ms NOS 435 91205 41725 1 0 ino NI 3sn 350 mo asn 10 NI asn 35 NOS LON H LON LON NOS LON JON LON 8 9 5 v 8 9 6 v oa E TU Tu a c NM MARC EAM E Er MEE pro 1 1 134 5 S 10081X3 OL OO 1 i eee nie RL eee uvasng SS ee Hlava 34VS NI 38 LON LSNW YNOWYY N33825 SNOGYVZVH 34 5 Fig 0 15 5271 Wiring Diagram for
30. ALARM function is approximately 18 higher than the ALARM distance Range can also be selected in MX CONSYS and will take effect if all switches are in the OFF position from the controller for the 52714 There is provision for halving the range value selected by the switches If the terminal connector Range is connected to OV then the detection range is reduced to half that of the switch setting This may be done by taking cables to a remote contact the other side of which is connected to the same OV as the reference for Line In supply 5 6 DELAY TO ALARM The minimum delay to alarm is 3 seconds from a fire being present in the field of view that is large enough to be detected This delay is also switch selectable using 6 way 4 way S271 DIL switch S1 Fig C 4 the following additional values are available 9 6 seconds 9 2 seconds Note The minimum delay to alarm is 3 seconds However with this setting the detector requires that the alarm threshold level has been exceeded throughout for a minimum of 3 seconds in any given 5 second window Therefore for fires where the intensity varies the time to alarm may be longer Similarly for the 6 second setting the alarm threshold level must be maintained for a minimum of 6 seconds in any 8 second window and for the 12 second setting the alarm threshold level must be maintained for a minimum of 12 seconds in any 14 second window When the 5241 is operated in Continuously
31. Bracket 517 001 184 210 infra red test source 592 001 016 Adaptor S200 series 592 001 014 Nicad battery and charger 592 001 010 Solo 100 telescopic extension pole set 517 001 230 Solo 101 extension pole 517 001 226 Solo 704 adaptor tube B 517 001 224 Solo 610 Carryall bag 517 001 264 Weather Sun Shield 517 001 263 5200 Spares Kit and Sealant 517 001 266 Le manuel en fran ais est disponible sur le site Internet de Tyco Safety Products tycoemea com 65 APPENDIX 1 1 TWO WIRE CONFIGURATION FOR CONNECTING 5241 AS A CURRENT SOURCE DEVICE Below is an alternative method of connecting the S241 where the customer needs to connect the 5241 into a current source monitoring circuit It is an adaption with limitations see below It is recommended the 5241 is used wherever possible in 4 20 mA current sink configuration The following may be used for 52411 or 524114 in safe areas where LS barriers are in circuit 5241 CONTROL EQUIPMENT SCNOUT 8 O 420mA 7 O o Vs 20V 28V LINEOUT 6 O 5 LINEIN 4 4 20mA CURRENT SOURCE INPUT 2 0 Rp NANNY Signalling Currents DISCRETE SIGNALLING CONDITION CURRENT THROUGH Rp TYPICAL Fault 1 9mA 0 7 300ms wide pulse every 2 seconds Normal 4 9mA Alarm 17 4m alarm LED c
32. DATA 4 2 1 TEMPERATURE HUMIDITY PROTECTION AND PRESSURE Operating temperature range For non hazardous installations 40 C to 80 C 110 C for short durations For hazardous installations using flameproof S200f detectors in ATEX certified applications 20 C to 80 C For hazardous installations using flameproof S200f detectors in IECEx applications 20 C to 60 C For hazardous installations using intrinsically safe S200i detectors in ATEX or IECEx applications 40 C to 80 C Storage temperature range 40 C to 80 C Relative humidity Up to 95 RH non condensing Enclosure protection Tested to IP66 and IP67 Normal operating atmospheric pressure 910mbar to 1055mbar Heat radiation from sun 0 to 1000Wm typical Cable gland entries must be suitably sealed to achieve the required IP rating see 3 4 Section D 4 2 2 VIBRATION AND SHOCK The S200 series detectors are designed and tested for vibration and shock to EN54 10 the Standard for flame detection components of automatic fire detection systems For marine applications the detectors have been tested to Lloyd s Register Test Specification Number 1 1996 Vibration Test 1 and to DNV Certification Notes No2 4 May 1995 Class A 4 2 3 ELECTROMAGNETIC INTERFERENCE The detector is insensitive to radio frequency interference It has been designed and tested to the requirements of EN54 10 the Standard for flame detection components of automatic fire detecti
33. GUARD CHANNEL FIELD OF VIEW OBSCURED BY OPTICAL MONITORI NG REFLECTOR 0 45982277 VIEWING 270 GUARD CHANNEL FIELD OF VIEW OBSCURED BY WINDOW PROTECTOR Fig C 10 Areas Where S200f Not Discriminate Between Fire and a Modulated Hot Body GUARD CHANNEL FIELD OF VIEW OBSCURED 0 459277 VIEWING CONE 280 270 GUARD CHANNEL FIELD OF VIEW OBSCURED BY WINDOW SUPPORT BY OPTICAL MONITORING REFLECTOR 90 NS 180 Fig C 11 Areas Where S200i Not Discriminate Between 28 Fire and a Modulated Hot Body 6 6 FALSE ALARM DATA The S200 has been subjected to the following stimuli which might be considered potential sources of false alarms Unless otherwise specified tests were performed at a minimum distance between source and detector of 0 3m Detectors were set to maximum sensitivity 50m range Steady state sources were chopped at frequencies in the range 0 10Hz RADIATION SOURCE IMMUNITY DISTANCE m 1 Sunlight No response 2 Sunlight with rain No response 3 100W tungsten filament lamp No response 4 a qd bank 4 32 5 125W mercury vapour lamp No response 6 1kW radiant electric fire element 20 5 7 2 kW fan heater No response 8 Halogen torch No response 9 Car headlights 60W halogen No response 10 Lighted cigarette No response 11 Grinding metal No response
34. ICTED FIELD OF VIEW DUE TO WINDOW GUARD METAL PROTRUSION D 2 Or rnont Fig 6 24 The sensitivity of the 5200 is at a maximum on the detector axis The variation of range with angle of incidence is shown in Polar Diagrams Figs 7 and C 8 for open air tests using 0 1m pan fires with the detector operating at normal range DETECTOR PLAN VIEW Fig C 7 Pan Fires Relative Range vs Angle of Incidence Horizontal Plane Dotted Line Shows Flameproof Version with Steel Guard Fitted DETECTOR 90 90 809 80 70 70 60 60 50 50 20 30 FIRE ABOVE DETECTOR FIRE BELOW DETECTOR Fig C 8 Pan Fires Relative Range vs Angle of Incidence Vertical Dotted Line Shows Flameproof Version with Steel Guard Fitted Solid Line Shows IS Version 25 6 4 RESTRICTION FIELD VIEW DUE WINDOW GUARD The following measurements were made by LPC on an optical bench to determine the detector s directional dependence as required in pr EN54 Part 10 The results given below are for the IS version of the detector and measured on an optical bench viewing a gas flame 35 degrees off axis The detector is then rotated anticlockwise about its optical axis in steps of 45 degrees The detection ranges have been normalised against the detection range for viewing the test flame on axis ie 0 degree IS Version 35 degree off axis Rotated N
35. INFRA RED FLAME DETECTION 5200 SERIES TRIPLE IR FLAME DETECTORS USER MANUAL 5200 USER MANUAL INDEX PAGE A INTRODUCTION 1 1 Introduction 1 2 Flame Detection Operation 1 3 General Construction 4 B PRODUCT APPLICATION 5 1 Application 5 2 Benefits of the 5200 Series 6 C SYSTEM DESIGN INFORMATION 8 1 Introduction 8 2 Electrical Characteristics 8 3 Mechanical Characteristics 13 4 Environmental 16 5 Operation 17 6 Performance Characteristics 22 7 Design System 30 8 Approvals and Compliance with Standards and Patents 31 D INSTALLATION 38 1 General 37 2 Mounting a Detector 37 3 Detector Wiring 39 4 Initial Wiring Check 54 E COMMISSIONING 56 1 System Checks 56 2 Connecting and Commissioning the Detectors 56 F MAINTENANCE 63 1 General 63 G ORDERING INFORMATION 65 APPENDIX 1 CONNECTING 5241 AS A CURRENT SOURCE DEVICE 66 SECTIONA INTRODUCTION 1 INTRODUCTION The S200 range of triple IR flame detectors comprises five flame detector variants The detectors share the same flame detection circuitry optics and main mechanical housing Each variant is available as an Intrinsically Safe 1 Flameproof f version except the 5261 which is available only in the Flameproof version The five variants are INTRINSICALLY VARIANT SAFE FLAMEPROOF Conventional 2 Wire Interface 52311 5231 4 20 Current Loop Interface 52411 S241f Analogue Addressable Loop Interface 525114 S251f R
36. a Field trials using n Heptane fires indicate that the detection range increases by approximately 20 when the pan area is doubled 23 Note When testing at the limits of the detectors range the delay in response will vary due to the ambient conditions and may be significantly longer than the minimum response times as described in 5 6 6 3 3 GAS FLAMES The S200 will not detect a hydrogen fire as it does not contain carbon The 5200 will detect gas fires from inflammable gases containing carbon and hydrogen providing its flame produces flame modulation in the 1 to 15Hz range Fires burning a premixed air gas mixture may be difficult to detect as they may produce little modulation Tests show that an 5200 detector set to the 50m range will typically detect 0 8m high and 0 2 sqm area methane natural gas flame venting from an 8mm diameter gas vent at 0 5Bar 7 5lbs sq in as below Range 30m 40m 50m Time to Respond 3 seconds 6 seconds 15 seconds 6 3 4 DIRECTIONAL SENSITIVITY WARNING WHEN MOUNTING THE FLAMEPROOF VERSIONS OF THE 5200 DETECTORS ENSURE THAT THE PARTS OF THE FLAMEPROOF GUARD INDICATED IN FIG C 6 ARE NOT DIRECTED AT THE RISK AREA BEING PROTECTED AS THE FIELD OF VIEW IS RESTRICTED MIRROR COVER QN x DO NOT MOUNT THE TY FLAMEPROOF VERSION OF THE S200 DETECTOR WITH THIS PART OF THE GUARD WINDOW PROTECTOR DIRECTED AT THE RISK AREA BEING PROTECTED RESTR
37. are affixed to the potting assembly These are only visible when the front case assembly is unbolted from the base assembly DE XX CA Fig 13 Mark and Year of Manufacture Labels 8 8 ATEXAND IECEx REQUIREMENTS These detectors are designed and manufactured to protect against other hazards as defined in paragraph1 2 7 of Annex of the ATEX directive 94 9 EC The detector cannot be repaired and must be replaced by an equivalent detector When the detector is installed as described in Section D the detector will not be subject to mechanical stresses The detector should not be installed where they may be subject to mechanical or thermal stresses or where they may be attacked by existing or foreseeable aggressive substances The detector must not be exposed to dusty conditions The electronic assemblies of the detector contains encapsulated electronic assemblies so that all critical components and conductors are given protection against corrosion and mechanical shock Fault indications are described in Section 5 3 installations require that Cable entry holes are provided as specified on the certified drawings for the accommodation of flameproof cable entry devices with or without the interposition of a flameproof thread adapter Unused entries are to be fitted with suitable certified stopping plugs The cable entry devices thread adapters and stopping plugs shall be suitable for the equipment the
38. cable and the conditions of use and shall be certified as Equipment not a Component 8 9 THORN SECURITY CERTIFIED SYSTEMS FOR HAZARDOUS AREAS The S200i Series detectors are certified by a Notified Body for the ATEX Directive 9 94 Baseefa 2001 Ltd as intrinsically safe apparatus and as such may be used as part of a certified intrinsically safe system The system must incorporate specified barriers and there will also be restrictions on cable types and lengths The detailed parameters will depend on the type of barrier used System 800 MX Digital Addressable circuits cat ia is a certified circuit incorporating the 35 527114 detector Details of these systems are contained in Publication 17A 13 D2 Loop loading calculations for the S271i are contained in Publication 17A 02 ISLOOP Comprehensive design documentation covering System 800 is available from Thorn Security Tyco web sites secure part System 800 does not at this time cover IECEx certified systems For IECEx certified systems the barriers used must be IECEx certified Wiring from the hazardous area to the safe area passes through the shunt diode safety barrier and or galvanic isolator as shown in Figs D 6 D 8 D 9 D 11 and D 15 36 SECTION D INSTALLATION 1 GENERAL The 5200 Series detectors may be surface mounted or may use the S100 200 adjustable mounting bracket for fixing to a convenient rigid surface electrical connections are mad
39. d also be taken to ensure the angle of incidence of sunlight either direct or reflected is not such that it can penetrate the receiving aperture of the window test optical path 37 f The detector should not be sited in a position in which it will be subject to severe icing g The detector must be mounted on a stable structure which is readily and safely accessible for maintenance staff h Wherever possible the detector should be mounted such that the face is tilted downwards at small angle to prevent water collection and lessen the settlement of particle deposits on the window The detector mounting bracket is to be secured with two 8 bolts studs or screws at the fixing centres shown in Fig D 1 A drilling template is provided to allow optimum selection of the fixing centres and the 2 5mm diameter 3mm deep pivot hole The detector is to be secured to the bracket using the four M6 screws supplied with the detector Alternatively the detector may be secured directly to the fixing surface with four M6 bolts studs or screws at the fixing centres shown in Fig D 1 The surface chosen for the mounting should be flat over the area of the bracket to ensure a stable fixing 50 ADJUSTMENT 4x M6 SURFACE MOUNTING HOLES 149 3 SURFACE MOUNTING DIMENSIONS Fig D 1 Adjustable Mounting Bracket and Surface Mounting Dimensions The 5200 Series may be operated in any position but
40. e via terminal blocks inside the detector rear housing Three 20mm cable entries are provided Guidance on mounting and wiring the detectors is given below 2 MOUNTING A DETECTOR The location of each detector should have been determined at the system design stage according to the principles detailed in Section B and marked on the site plan The actual mounting position must however be decided during installation and in choosing the position the following principles together with the original system requirements should be followed 2 1 CHOICE OF MOUNTING POSITION The following points must be observed when choosing the mounting position a The detector must be positioned such that a clear line of sight is provided to all parts of the risk area Roof trusses pipework supporting columns etc in front of the detector can cause significant shadowing and should be avoided b Ifsupervision of an area immediately below the detector is required it is essential that the angle between the detector and the horizontal is not less than 50 c The detector should not be sited in a position where it will be continuously subjected to water drenching d installations in areas of high solar radiation some form of sunshade is recommended to prevent excess heating of the detector WINDOW WINDOW SELF TEST RECEIVE APERTURE REFLECTOR WINDOW SELF TEST SELF TEST LIGHT LIGHT SOURCE SOURCE PATH e Precautions shoul
41. econds 2 1 1 COMPATIBILITY WITH OTHER THORN SECURITY CONVENTIONAL DETECTORS The connection of Thorn Security s plug in conventional detectors ie M300 and M600 ranges in the same circuit as 5231 flame detectors is not generally recommended 52314 flame detectors may be connected in the same circuit as 5131 5161 type detectors The number of 5231 detectors per zone should be assessed taking account of good engineering principles controller characteristics and cable parameters As a guide most controllers will permit 4 231 units per zone We do no recommend exceeding 6 x s231 units per zone Note 1 S161 flame detectors may be connected in flameproof circuits and can there fore be connected with S231f flame detectors 2 If detectors are mixed then S231 detector must be the last detector on the zone or a fault condition on an 5231 detector will not be signalled to the controller 2 1 2 TECHNICAL DATA Supply Voltage 15V to 28V Voltage at the detector when not in alarm Quiescent Current 350 typical Alarm Current 33mA typical at 24V source supplied via 330 ohms 38mA typical with remote LED fitted 18mA typical with MTL 5061 barrier fitted Alarm Output Mode See Fig C 1 Operation must be restricted to the safe area shown by use of external resistance if necessary Reset Time Voltage Supply must be reduced to less than 2V for greater than 0 5 seconds Stabilisation time after reset p
42. elay Interface S261f Digital Interface S271i S271f The S200 Advanced Flame Detector offers a major improvement in both flame detection capability and immunity to blackbody radiation The S200 is available in intrinsically safe and flameproof models except for the S261f which is available only as a flameproof version In particular the range incorporates models for conventional detection circuits 523114 S231f models for connection to 4 20 mA current loop S241i S241f models for connection to Thorn Security Minerva analogue addressable systems 525 S251f a model with relay outputs S261f and models for connection to Minerva MX Digital systems 527114 52714 The output of the S241 provides a truly analogue current output and the 5251 and 5271 provide an additional level of signalling to indicate a pre alarm condition The detectors have been tested by LPCB to EN 54 Part 10 and have been classified as Class 1 flame detectors on the 50m and 25m range settings and as Class 3 on the 12m range setting For marine applications the detectors have been tested to Lloyd s Register Test Specification Number 1 2002 Environmental Category ENV1 2 3 and 5 and to DNV Certification Notes No 2 4 April 2001 2 FLAME DETECTION OPERATION The S200 detectors analyse radiant energy at three different wavelengths and as such offer the full benefits of the triple IR flame detector The detector uses a well pro
43. emperature objects The amount of energy seen between 3 8 4 8um can be approximated to a linear function Thus a measurement of the energy at these two wavelengths provides information to calculate with sufficient accuracy the level of blackbody radiation at the intermediate flame detection wavelength of 4 3um The energy due to the emission from hot carbon dioxide given by a flame is superimposed on that from any blackbody in the detector field of view without adding any significant emissions at 3 8um or 4 8 thus enabling proper segregation between non flame signals and flame signals Because a large fire will possibly produce a large amount of black smoke which will behave like a blackbody and may weaken the carbon dioxide peak signals greater than a pre determined upper limit will be classed as a fire The use of an optical processing technique as opposed to the use of two separate electronic sensors for the guard channel improves the overall reliability of the detector by reducing the number of components and eliminating the need for complex calibration procedures during manufacture A TEMPERATURE MOVEMENT b FLAME N BLACKBODY COLD is 7 BLACKBODY 5 gt 3 8um 4 8um WAVELENGTH 4 3um Fig A 1 Radiation from Objects 2 2 DETECTION RANGE The S200 range can detect on axis a fully developed 0 1m n heptane or petrol pan fire at up to 50m and
44. g the requirements of EN 60079 1 2004 They are classified as suitable for zones 1 and 2 areas over an ambient temperature range 20 C to 80 C for temperature class T5 gasses and for temperature class T6 gasses The certified labels for the S241f and 52616 are shown in Fig C 15 and C 16 The labels for the 5231 S251f and S271f are not shown as apart from the model number they are identical to S241f 52314 S241f 261f and 52711 are also IECEx certified BAS 05 0056 Ex d IIC T6 or T5 20 C lt 60 C This certificate shows the S200f detectors are certified meeting the requirements of EN 60079 0 They are certified as suitable for Zones and 2 over temperature range 20 C to 60 C for temperature class T5 gasses and 20 C to 40 C for temperature class T6 gasses 8 3 CONSTRUCTION PRODUCTS REGULATION The S200 range of flame detectors comply with and are manufactured to the requirements of the Construction Products Regulation see INFORMATION on page 34 The detectors carry the CE mark 32 8 4 OTHER APPROVALS The 5200 detectors also have the following approvals LPCB Loss Prevention Certification Board DNV Det Norske Veritas Norway LRS Lloyds Register of Shipping NF CNMIS France S261f and S271f Note 1 The S200 detectors are LPCB approved to EN54 Part 10 but not when used with the Remote LED REMOTE RANGE and or REMOTE SELF TEST functions connec
45. hing mode In the non latching mode if the alarm source is removed for greater than 5 seconds then the detector will stop indicating an alarm In the latching mode the controller must be reset to remove the alarm condition Note The use of an S231i in a non latching mode is generally possible when the detector is connected after a shunt diode safety barrier but evaluation tests are recommended 17 5 3 FAULT INDICATION For the 52314 5241 and 5261 variants the yellow LED will flash indicating a fault Different flashing rates are used to indicate different faults as follows 9 Window obscuration 0 5Hz 9 Detector fault 2 0Hz The 5251 5271 will not provide a local indication for a fault instead the fault indication will be displayed on the controller 5 4 FAULT SIGNALLING The detectors signal a fault condition as follows 5231 Open circuit fault band ie the EOL resistor is made open circuit The faulty detector puts 4 pulses of total width 45ms and level 55mA on the line which is detected by the S231 connected at the end of the zone This detector open circuits the EOL resistor Note The end detector in the zone must be S231 with the EOL fitted as it is this device which will signal a fault the faulty detector will indicate with a flashing yellow LED 5241 Current drawn on the loop will be as follows e 0 0 to 0 5mA for a detector fault 1 8 to 2 2mA for a window fault e 1 3 to 1 7mA for any fa
46. hms 400ohms max Vs should be 22V min to provide extra voltage to latch detector in alarm For Rp 25ohms RL may be increased to reduce the 4 20mA current in alarm Measured values of IRp are shown below RL IRp Vs 20V IRp Vs 22V IRp Vs 24V Ik 23 6mA 24 5mA 25 3mA 2k2 21 4mA 222mA 22 7mA 3k3 20 2mA 20 7mA 21 1mA Detector does not latch CURRENT THROUGH Rp 224775772 7777 ALARM 17 4 44422224 LED CURRENT IRp 4 20mA Current 67 rights reserved Reproduction of any part this manual form whatsoever without Thorn Security s express written permission is forbidden The contents of this manual are subject to change without notice effort has been made to ensure the accuracy of this manual However should any errors be detected Thorn Security would greatly appreciate being informed of them The above not withstanding Thorn Security can assume no responsibility for any errors in this manual or their consequences For further information see www tycoemea com Thorn Security Limited Dunhams Lane Letchworth Hertfordshire SG6 1BE UM26 Issue 11 120 415 400 Issue 11 The right is reserved to modify or withdraw any product or service without notice
47. horn Security Limited 2 3 1 TECHNICAL DATA The maximum number of detectors that may be connected to a Minerva system loop is 50 The maximum number of detectors that may be connected to each barrier in a Hazardous Area circuit is 10 Average current consumption 350 Stabilisation Time after reset power up 60 seconds typical to 90 seconds maximum 5251 analogue addressable signalling currents DISCRETE SIGNALLING OLD SYSTEM AFD CURRENT MINERVA MINERVA CONDITION TYP mA MEASUREMENT mA LIMITS mA Fault 0 75 1 5 0 to 3 0 Normal 2 25 4 5 3 0 to 10 4 Alarm 9 0 18 0 16 2 minimum Table 3 5251 Discrete Signalling Old System ENHANCED SIGNALLING MODE AFD CURRENT MINERVA MINERVA CONDITION TYP mA MEASUREMENT mA LIMITS mA Non Window Fault 0 0 0 to 2 0 Window Fault 1 5 3 0 2 0 to 4 0 Normal 3 0 6 0 4 0 to 12 0 Pre Alarm 7 0 14 0 12 0 to 16 0 Alarm 9 0 18 0 16 0 minimum Table 4 5251 Enhanced Signalling New System Note 1 The signalling mode is selected by means of a DIL switch see Section E 2 1 Table 3 2 Remote Range and Self Test selection is not available for the S251i when used with a shunt diode safety barrier CAUTION IF USING AN S251 WORKING IN THE ENHANCED SIGNALLING MODE REPLACE AN 5251 THE S251 MUST CONFIGURED IN CONSYS VERSION 12 0 OR LATER 11 2 4 52611 5261 is only provided in flameproof
48. ineral oil based grease is a suitable compound and is available in 100g tubes Stock Code No 517 001 250 40 3 4 FLAMEPROOF WIRING Cabling and conduit systems must comply with BS EN 60079 14 1997 3 5 FITTING FERRITE TUBES Fit the ferrite tubes to conductors as shown in Fig D 3 For optimum RF suppression each pair of cables must be looped once around the ferrite tube m f ar Fig D 3 Fitting of Ferrite Tubes 41 534 93 GALVNINYAL 38 OL N33H2S yvasna v3uv snoauvzvh vauv 3475 3 1N3Wdino3 Fig D 4 Directive Earthing Arrangements for Screened Cable or Armoured Cable 42 1V13W SI 318VO SI HLOS SI 1 e ONIMIM LNANDASENS AHL OL 318VOlddV OSIY SI 1 SIHL 1001850 ad le 9NIN33H9S 1 uvasna GNV19 Lv S33H93G G31VNIIWH31 OL s
49. l level generally varies inversely with the square of the distance For convenience fire tests are normally carried out using liquid fuels burning in pans of known area in still air Note The results of fire tests can be significantly affected by weather conditions prevailing at the time eg wind The sensitivity of a detector can then be conveniently expressed as the distance at which a particular fire size be detected While the 5200 will reject modulated signals from blackbody sources the presence of such sources of high intensity may affect the sensitivity of the detectors It is important to think in terms of distance rather than time because of the different burning characteristics of different fuels Fig C 5 shows the response to two different fuels which ultimately produce the same signal level The signal level given by n heptane quickly reaches its maximum and produces an alarm within about six seconds of ignition Diesel on the other hand being less volatile takes about a minute to reach equilibrium and an alarm is given in about 60 seconds from ignition Note f a fire test is carried out using non miscible fuels then it is strongly recommended that water be placed in the bottom of the pan to keep it cool and prevent it deforming A sufficient amount of fuel must be placed in the pan to ensure combustion occurs over all of its area throughout the intended duration of the test 22 2
50. may be initiated remotely Switch selectable range settings Switch selectable time to alarm settings Operational range up to 50m fuel dependent Remote control of range S271 has fast detection using MX interrupt facility Remote control of delay range and remote test on 52714 Completely solar blind Very low quiescent power consumption High sensitivity to hydrocarbon fire in oily environments Rugged stainless steel 316 housing and mounting bracket Flexible mounting and angular adjustment Ease of installation Connection for remote LED Selectable latching non latching alarm output not 251 S271 Selectable latching non latching fault output not 251 S271 2 BENEFITS OF THE 52004 SERIES Infra red flame detectors offer certain benefits over detectors working in the visible or ultra violet regions of the spectrum For example they are Highly sensitive to flame thus increasing probability of early detection of hydrocarbon fires Not greatly affected by window contamination by dirt and oil deposits thus decreasing maintenance frequency leading to operating cost reduction 9 Able to see flames through smoke and able to see flames through high densities of solvent vapours thus increasing the probability of early detection of hydrocarbon fires over other ultra violet detectors in the same conditions Several detectors on a single 2 wire conventional or analog addressable circuit The S200 series have all
51. noauvzvH 3475 Fig D 5 EMC Directive Earthing Arrangements for an Armoured Screened Cable 43 029 IN31SAS 3H L NI NMOHS 3SOHL SV suaraWvuvd avs 3AVH 15 6 Qasn LSNW SdalHHva 431511939 X393l AINO SIN31SAS 21419920 ONITIVLSNI ALHVd HO 5 NHOHL SLOnIGOHd AL34VS 0941 5 029 WALSAS 33S aasn aa 15011 sHalHHVva 431411990 XALV ATNO 134 5 SWALSAS 31541932 SNITIVLSNI ALHVd ALIUNDAS 5 134 5 1 5 A Sm 4 m 1 1 e 1 sep el 1 JO 6 6 o ZL NI 1531 39NVH NI 1531 NOS 4135 NOS 4135 1625 ILECS l 4 1 Ino 100 NI I umo 1no NI 7 NOS 0 0 NOS ann AO ann 3 8 703 9 5 2 8 9 9 v 2 14 aS EE 4 2 n UE YOLSISSY
52. nts should be separated and the faces examined for possible defects resulting from corrosion erosion or other causes Check that all stopping plugs and bolts are in position and tight d No attempt should be made to replace or repair windows except by complete assembly replacement 12 DETECTOR CLEANING The S200 series detectors are relatively tolerant of accumulations of dirt on the sensor window or optical monitoring reflector see Fig F 1 However thick deposits of dirt and oil will cause a loss of sensitivity and a subsequent fault indication It is recommended that detectors be cleaned using water or a detergent solution A stiff bristle not wire brush may be used to remove heavy deposits Particular attention should be paid to the reflector and sapphire window Fig F 1 The detectors must not be cleaned without first removing power or isolating the detector Note Do not remove the Optical Monitoring Reflector to clean the detector 63 WINDOW REFLECTOR FACE Fig F 1 Reflector and Window 1 3 FAULT FINDING If a fault is indicated at the controller it may be due to a number of self test outputs the most common fault would be obscuration of the window If the remote self test is connected put the controller into the walk test mode by switching the self test input to OV If an alarm is indicated then the window is clean and the front end circuitry is operating correctly Reset the controller and wait
53. of the units being in mA they are signalled digitally using the MX protocol 3 GENERAL CONSTRUCTION Fig A 3 shows a general view of a complete detector Fig 3 5200 Detector General View The detector is of robust construction to allow its use in harsh environments The detector comprises a two part stainless steel enclosure The front section of the enclosure contains the encapsulated electro optical assembly which is connected to the terminal board on the rear section by a small cableform A sapphire window is fitted in the front of the housing The window allows infra red radiation to fall on the sensors the LED alarm and fault indicators are visible through the window The front section of the enclosure is attached to the rear section by four captive screws seal provided between the front and rear sections ensures protection to IP66 and IP67 Two 20mm cable entries are provided at the bottom electrical connections are made to three 4 way terminal blocks four 4 way terminal blocks for the 5261 The detector may be fitted directly to a suitable surface or an optional adjustable mounting bracket may be used A stainless steel guard is fitted to the flameproof versions to protect the integrity of the window shown in Fig A 3 Until the end of 2004 the detectors had two cable entries at the bottom and one at the top The detector design has been changed to remove the top cable entry due to problems
54. on systems and BS EN 61000 6 3 Generic Emissions Residential Commercial and Light Industry and EN 50130 4 the generic standard for electromagnetic immunity within the European Union The detectors have been tested to the product family standard for fire alarm systems 50130 4 Tests have proved the operation in field strengths of 10V m at frequencies from 150kHz to 2000MHz with amplitude and pulse modulation when installed in accordance with this manual For Marine applications the detectors have been tested to Lloyd s Register Test Specification Number 1 1996 E M I Immunity for Electronic products and to DNV Certification Notes No 2 4 May 1995 Electromagnetic Compatibility Tests To comply with the above standards ferrite tubes must be fitted to the detector base as shown in Fig D3 Page 40 16 4 2 4 IONISING RADIATION The 5200 series like other infra red detectors is insensitive to X rays and gamma radiation as used in non destructive testing The detector will operate normally and will not false alarm when exposed to this type of radiation although long term exposure to high radiation levels may lead to permanent damage 4 2 5 CORROSION The detector is able to withstand the effects of corrosion conditioning with sulphur dioxide SO2 concentration as specified in EN54 10 For Marine applications the detectors have been tested to Lloyd s Register Test Specification Number 1 1996 Salt Mist test and to DNV Certification N
55. ord the switch settings for future checking during service and maintenance inspections The Window self test may be disabled by linking the self test terminal to before applying power to the unit ie terminal 10 linked to either terminals 3 or 5 Self test 525 1 and 52711 excluded may be demanded by taking the input high disconnected and then low again Automatic operation will not restart unless the self test input is disconnected before power up CAUTION DO NOT MOVE THE ALARM OR FAULT LATCHING SWITCHES AFTER THE DETECTOR HAS BEEN POWERED 2 1 SWITCH SETTINGS Tables 1 to 6 give the switch settings for switches S1 and S2 see Fig E 1 for switch locations SW1 1 SW1 2 RANGE OFF OFF EXTENDED RANGE 50m ON ON EXTENDED RANGE 50m OFF ON NORMAL RANGE 25m ON OFF REDUCED RANGE 12 5m Table 1 Range 5251 and 5271 The Range Settings halved if the Range Terminal No 11 is connected to 0 volts The Range and Delay settings for the 5271 may be set from the controller via MX CONSYS the Range Delay switches must be in the OFF position for this option to take effect dependant on MX Firmware version 56 SWITCH S1 SWITCH S2 SWITCH S2 5271 ONLY SWITCH S1 5251 ONLY S271 ONLY ON 61 51 52 ON S2 1 4 1 6 1 7 1 8 CONNECTOR BLOCKS RELAYS AND CONNECTOR BLOCK 5261
56. ormalised Angle Range 0 0 80 45 0 84 Mirror towards flame source 90 0 85 Top of detector towards flame source 135 0 82 180 0 81 225 0 79 270 0 80 Bottom of detector towards flame source 315 0 80 The measurements were then repeated for the flameproof version with the guard fitted The detector was measured using the gas flame 25 degrees off axis Flameproof Version Guard Fitted 25 degree off axis Rotated Normalised Angle Range 0 0 94 45 0 95 90 0 96 Maximum range 135 0 95 180 0 96 225 0 89 Minimum range Window protector restricting field of view 270 0 95 315 0 93 The 54 Part 10 requirement is that the ratio of maximum range to minimum range be less than 1 41 The ratio for the IS version is 0 85 0 79 1 08 and for the flameproof version is 0 96 0 89 1 08 for off axis angles of 35 and 25 degrees respectively the detector meets the requirement of 5 Part 10 The measured acceptance angle as defined in EN 54 Part 10 as measured by LPC was 25 for the S200f and 35 for the S200i detectors The above data is for approvals purpose The following data is included to show the polar response of the detector to real fires For the flameproof version the field of view in some orientations is restricted by parts of the window guard projecting into the field of view These projections are required to protect the window as defined in the standards relating the flameproof enclosures The polar diagram Fig C 9 give
57. otes No 2 4 May 1995 Salt Mist Test 5 OPERATION 5 1 ALARM INDICATION red LED is visible through the front window which gives the same indication for the 231 5241 and S261 variants Illumination indicates an alarm The S251 analogue addressable variant and the S271 digital addressable variant indicate in the same manner as the other variants but the LED is driven by the controller In normal conditions the LED is pulsed at two second intervals for the 5251 and 5 seconds for the 5271 Continuous illumination indicates an alarm under control of the Minerva controller 52 ALARM SIGNALLING The detectors signal an alarm condition as follows 231 Increase in current drawn from supply see Fig C 1 5241 Current drawn on the loop will be between 5 7 17 0mA A single value between 16 0 19 is drawn for the S241 compatible mode e 5251 Returned current will be between 8 3 and 9 7mA A pre alarm function is also available which returns a current value between 6 5 and 7 5mA The latter is not available for the S251 compatible mode 5261 Alarm relay will close 5271 Returned values will be 2190 bits A Pre alarm function is also available which returns values of 2153 bits The 52314 5241 and 5261 may be set as alarm latching or non latching When the 5241 is operated in the Continuously Variable Signalling mode the alarm latching function is inoperative The 251 S271 have only the non latc
58. ower up 60 seconds typical to 90 seconds maximum Equivalent Inductance OmH Equivalent Capacitance 1 5nF Note 1 The maximum number of detectors that may be connected to a zone circuit is 6 see 2 1 1 2 The alarm currents shown above include current through a 4k7 end of line resistor 3 In general it is not possible to use a remote indicator on detectors which are supplied via a shunt barrier safety diode or galvanic isolator 4 Where a remote LED is used a 33 ohm resistor should be fitted in series with it to limit the current through the LED to approximately 30mA 80 70 REMOTE LED FITTED WITH SERIES 330HM RESISTOR 60 50 l lt 40 SAFE OPERATING tt 40 AREA 9 LED 20 10 0 2 4 6 8 10 12 14 16 18 20 22 24 VOLTAGE DETECTOR NOTE 4k7 END OF LINE RESISTOR FITTED Fig C 1 Load 22 52411 52411 The S 241i1 S241f detectors provide a 4 20mA current sink output suitable for standard programmable logic controllers 2 2 1 TECHNICAL DATA Supply Voltage 15 to 28V Voltage at the detector Quiescent Current 350 typical excluding signalling current Supply Current in Alarm Alarm Output Mode 12mA typical at 24V supply 20mA typical with remote LED fitted 10mA typical with 600 ohm barrier 12mA typical with 600 ohm barrier remote LED 4 20mA CURRENT SINK
59. pplication of flame detectors and the overall system sensitivity must therefore be agreed between the installer and the end user Once this agreement has been reached the system designer can determine the area covered by each detector using a scaled plot based on Figs C 7 C 8 C 9 C 10 C 11 and the fire test data This plot is best drawn to the same scale as the site plan so that direct superposition can be used to determine detector coverage In carrying out the design certain factors should be kept in mind a For area rather than spot protection the best coverage will normally be obtained by mounting the detectors on the perimeter of the area and pointing into the area b As the S200 series are line of sight detectors any object within the detector s field of view will cause a shadow in the protected area Even small objects close to the detector can cause large shadows c The detector should not be mounted in such a position that water will collect on the window d The detectors are passive devices and will not react with one another They may therefore be positioned with their fields of view overlapping 30 8 APPROVALS COMPLIANCE WITH STANDARDS AND PATENTS 8 1 INTRINSIC SAFETY S200i RANGE The 2311 52411 525 1 and 52711 are designed to comply with EN 50014 BS EN 60079 0 2004 and EN 50020 for intrinsically safe apparatus They are certified ATEX code 5 Cenelec code EEx T5 or T4
60. re Alarm 2153 Alarm 2190 Normal 68 Table 5 12 3 MECHANICAL CHARACTERISTICS 3 1 TECHNICAL DATA Dimensions see Fig C 2 Height Width Depth Weight Mounting Bracket Weight Materials Enclosure Window Mounting Bracket Screws etc exposed to the elements Electronic Module Electrical Access 167mm 167mm 89 5mm max maximum depth with flameproof guard fitted 94mm 3 8kg 1 1kg Stainless steel 316L ANC4BFCLC to 53146 Part 2 Sapphire Stainless steel to BS1449 Part 2 316 S16 Bright stainless steel 316 Encapsulated Standard M20 gland holes two 13 4 x M8 SURFACE 3 XFLAMEPROOF GUARD MOUNTING HOLES MOUNTING POSTS OPTICAL MONITORING REFLECTOR SAPPHIRE WINDOW 89 5 max SEE NOTE NOTE MAXIMUM HEIGHT WITH 2 X 20mm FLAMEPROOF GUARD GLAND HOLES FITTED 94mm Fig 2 5200 Series Overall Dimensions 14 50 ADJUSTMENT 4 x M6 SURFACE X 7 MOUNTING HOLES SURFACE MOUNTING DIMENSIONS 200mm CLEARANCE REQUIRED FOR FULL ADJUSTMENT Fig C 3 Adjustable Mounting Bracket and Surface Mounting Dimensions 15 4 ENVIRONMENTAL 4 1 GENERAL The design and construction of the 5200 series detectors are such that they may be used over a wide range of environmental conditions Relevant limits are given in Para 4 2 4 2 TECHNICAL
61. s not possible MICC cable should be used Particular care must be taken to ensure that detector wiring is not run close to ac power circuits 3 3 CABLE ENTRY SEALING CAUTION CABLE GLANDS AND STOPPING PLUGS MUST BE SUITABLY SEALED TO PREVENT THE INGRESS OF MOISTURE Only cable glands incorporating an inner cable seal should be used In exposed outdoor areas it is recommended that a shroud be fitted over the cable glands Cable glands should also be sealed to the detector housing by fitting a nylon washer between their flange and the housing In applications where the ambient temperature is expected to be 409 or higher cable glands with a silicon inner seal must be used and when fitted the shroud must be made of CR rubber The use of stopping plugs with a mushroom head and integral ring is recommended The glands stopping plugs should be hand tightened with the addition of at least a further 14 turn applied by spanner or other suitable tool Where it is not practicable to use a nylon gland washer or where an anti seizing union is required the following alternative methods may be used a For Safe Area or Intrinsically Safe applications the thread of cable glands stopping plugs may be sealed using PTFE tape or other jointing putty or mastic b For Flameproof applications the threads of the flameproof glands stopping plugs may be sealed using any non setting grease as described in BS EN 60079 14 1997 PBC BA 200 loaded m
62. s the detection range to pan fires for cone angles of 50 60 70 80 and 90 degrees The plots are obtained by combining pan fire and optical bench measurements In the area where the field of view is restricted by the window protector extra measurements have been made to define the extent of the obstruction 26 0 DOTTED LINE REPRESENTS 0 8 MAXIMUM RANGE DOTTED LINE REPRESENTS MAXIMUM RANGE 2 270 DOTTED LINE 180 195 REPRESENTS FIELD OF VIEW HALF MAXIMUM OBSCURED BY RANGE WINDOW PROTECTOR SEE FIG C 6 Fig C 9 S200f Detection Range for Viewing cones 50 60 70 80 and 90 6 5 HOT BODY DISCRIMINATION FIELD OF VIEW The S200 flame detectors discriminate against false alarms from hot radiating objects in the field of view of the detector This is done firstly by looking for modulation in the flame flicker frequency band 1 to 15Hz and secondly by comparing the signal in the guard channel For the 5200 detectors there are two areas in the field of view where the guard channel is partly obscured In these areas the discrimination against modulated black bodies is compromised and a modulated black body could possibly produce an alarm The areas where this may happen are shown shaded in the field of view diagram in Fig C 10 and Fig C 11 Detectors should be mounted so that potential hot bodies are not located in the shaded areas This can normally be achieved by rotating the detector 27
63. sily carried out using a small flame such as a match or cigarette lighter The flickering radiation from such a flame should produce an alarm at a distance of 1 metre within 5 seconds Dependent on the range and delay selected The red LED indicator in the detector should then light and the appropriate alarm response should be obtained at the control equipment In order to demonstrate the correct coverage of the system it is desirable to perform full scale fire tests These tests should use liquid fires as described in System Design Information Section B 2 4 DETECTOR TESTING HAZARDOUS AREAS For testing detectors in hazardous areas an appropriate test torch certified for use in hazardous areas must be used such as the Thorn Security T210 Test Torch same product is also suitable for use in safe areas A self test of the detector electronics and window monitoring may be carried out from the MX controller S271 only during Walk Test The S200 remote self test cannot be used by the 52511408 S271i detectors 2 5 ACCESSORIES WEATHER SUN SHIELD A Stainless steel sun shield is available to reduce the heating effect of the sun in tropical conditions where the detector has to be mounted in direct equatorial sun The shield also provides protection from rain falling on the window The sun shield fits round the bracket and is bolted on to the rear of the detector 61 SECTION F MAINTENANCE
64. ted 2 S261f is LPCB approved with monitoring arrangement within the detector as shown in Fig D 13 and fed via a 2 core cable 8 5 PATENTS The S200 design and manufacture is covered by the following patents UK patents GB 2 281 615 GB 2 335 489 and GB 2 286 735 5251 only European patent 0 064 811 US patent US 6 255 651 33 8 6 CPRINFORMATION 34 0832 Thorn Security Limited Dunhams Lane Letchworth Garden City Hertfordshire SG6 1BE United Kingdom 14 0832 CPR F0219 F0220 F0221 F0222 F0223 F0224 F0225 F0226 F0227 S23li 231f 52411 5241 52511 52511 5261 52711 5271 54 10 Flame detectors Point detectors List of essential characteristics Nominal activation conditions Sensitivity Response delay response time and performance under fire conditions Pass Operational reliability Pass Tolerance supply voltage Pass Durability of operational reliability and response delay tem perature resistance Pass Durability of operational reliability Vibration resistance Pass Durability of operational reliability Humidity resistance Pass Durability of operational reliability corrosion resistance Pass Durability of operational reliability Electrical stability Pass 8 7 LABELLING the labelling required by the various approval bodies is on the front label with the exception of the NF mark and Year of Manufacure Construction which is stated on a label Both
65. two minutes If no fault is indicated then it is likely that the fault was due to a software watchdog timeout which might be caused in rare circumstances by very excessive electrical interference If the detector fails the remote test or no remote test can be performed clean the window and the reflector as specified reset the controller If the detector still shows a fault after a Thy hour period replace the detector It should be remembered that unless the processor has malfunctioned the detector will still be capable of detecting a fire at higher levels or with greater susceptibility to false alarms unless the window is totally obscured by something other than gradual contamination A faulty detector will be indicated by a flashing built in yellow LED For the 5251 5271 the panel will indicate the fault 64 SECTION ORDERING INFORMATION Description Stock Code Number 52311 Conventional Triple IR Flame Detector 516 037 004 S231f Conventional Triple IR Flame Detector 516 037 003 S241i 4 20mA Current Triple IR Flame Detector 516 038 004 S241f 4 20mA Triple IR Flame Detector 516 038 003 S251i Analogue Addressable Triple IR Flame Detector 516 039 004 S251f Analogue Addressable Triple IR Flame Detector 516 039 003 S261f Relay O P Triple IR Flame Detector 516 040 002 S271f MX Digital Addressable Triple IR Flame Detector 516 041 003 52711 MX Digital Addressable Triple IR Flame Detector 516 041 004 5100 5200 Mounting
66. ult in the S241 compatible mode 9 s2514 Analogue returned current will be as follows e 0 0 to 0 5mA for a detector fault e 1 3 to 1 7mA for a window fault e 0 65 to 0 85mA for any fault in the S251 compatible mode 9 5261 Fault relay will open e 5271 Digital returned values will be as follows e between lt 51 and 211 bits for a window fault e 10 for a non window fault The 5231 8241 8261 detectors may be selected as fault latching or non latching In the non latching mode the fault condition will be cancelled up to 80 seconds after the fault has been removed The 5251 8271 have only the non latching mode 18 5 5 SENSITIVITY RANGE SELECTION The range is switch selectable a 6 way DIL 4 way S271 switch S1 Fig C 4 on the backbox terminal PCB The following nominal ranges are available 9 Extended range 50 metres Normal range 25 metres Reduced range 12 5 metres e e 6m S251f and S271f4 only These ranges are for an n heptane fire in a 0 1m pan located on the main axis of the detector field of view With the 5241 set to Continuously Variable Signalling mode see Section E 2 1 the nominal ranges above correspond to an alarm threshold set to 17mA Laboratory tests indicate that setting the alarm thresholds at 9 and 15mA as opposed to 17mA will increase the range a fire is detected at by approximately 20 and 1046 respectively For 251 S271 the detection distance for the PRE
67. urrent see page 12 Table 7 CONTINUOUSLY VARIABLE SIGNALLING CONDITION CURRENT THROUGH Rp TYPICAL Non window fault 0 8mA 0 7mA current spike every 500ms Window Fault 2 4mA 0 7mA current spike every 2 seconds Normal 4 4 Flame Sensing 6 1 to 17 4mA alarm LED current above 17 4mA see page 12 Table 8 66 APPENDIX 1 Notes 1 Because the signalling current is returned on the 0 volt line it is important that this line is kept isolated from earth potential 2 The two wire configuration cannot be used in an Intrinsically Safe circuit through Zener Safety Shunt Barrier Galvanic Isolator When the S241 alarm indicator red is activated the current flowing in Rp will rise to approximately 28mA at 28V supply due to the detector alarm LED current The controller used must be capable of accepting this current overload Resistor RL connected between the 4 20mA and LINE IN terminals limit the alarm current The optimum value of RL will depend upon the supply voltage and the panel 4 20mA input impedance Rp A value for RL suggested is 1k ohm 1W for values of Rp of 10 to 250ohms Maximum alarm current measured at Rp 21 to 28mA This is 17mA from 4 20mA current source and 4 11mA current taken by detector alarm LED The approximate formula for calculating the total alarm current is Vs 5 17 4mA mA R kohms The above assumes no remote LED connected For Rp gt 250o
68. ven flame detection technique This is based on monitoring for modulated infra red radiation in the 4 3um waveband corresponding to CO emission It incorporates Thorn Security patented techniques for improved rejection of solar energy by using a combination of two 4 3m filters for Gaussian noise rejection by averaging the output signal of two separate sensor elements Three different alarm delays of 3s 6s and 125 are provided in all versions of 5200 2 1 BLACKBODY REJECTION The 5200 implements new concept for eliminating nuisance alarms from modulated blackbody sources The new design incorporates a novel optical filter which enables single electronic infra red sensor to measure the radiated energy present in two separate wavebands placed on either side of the flame detection waveband at 3 8um and 4 8um respectively see Fig A 1 The signal obtained from this guard channel is cross correlated with the signal from the flame detection channel to provide an accurate prediction of the non flame energy present in the flame detection waveband This prediction is independent of the temperature of the radiation source allowing the S200 to provide blackbody rejection over a wide range of source temperatures 0 Patented see Section C 8 4 Fig A 1 shows the amount of energy given by a hot object blackbody as viewed the electromagnetic spectrum This curve has a peak which moves further to the left with higher t

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