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PIRECL是基于擴(kuò)散的紅外可燃?xì)怏w探測器，可持續(xù)、固定地監(jiān)控易燃下限(LFL)從0至100%的易燃烴氣。標(biāo)準(zhǔn)設(shè)備輸出含有電氣隔離的4至20毫安信號（帶HART通信協(xié)議和RS-485串行通信）。受支持的串行通信協(xié)議包括MODBUS和ASCII。
PIRECL系列探測器非常適用于保護(hù)極具挑戰(zhàn)性的陸上/海上石油和燃?xì)庠O(shè)施以及其它下游烴氣應(yīng)用，經(jīng)全球認(rèn)證用于Class I、Division 1和2以及Zone 1和2危險(xiǎn)區(qū)域。此外，它的不銹鋼結(jié)構(gòu)、藍(lán)寶石鏡片和模塊設(shè)計(jì)的結(jié)合提供了工業(yè)級的硬度，且易于安裝，維護(hù)成本低。
探測器能夠探測數(shù)百種易燃烴氣。為甲烷（默認(rèn)）、乙烷、丙烷、丁烷、乙烯和丙烯提供了可現(xiàn)場選擇的算法。通過數(shù)字通信或可選手持式手操器能夠編程大量其它的工作參數(shù)。
The PointWatch Eclipse®Model PIRECL is a diffusion-based,infrared combustible gas detector that provides continuous,fixed monitoring of flammable hydrocarbon gases from 0 to 100%Lower Flammable Limit(LFL).Standard device outputs include an electrically isolated 4-20 mA signal with HART communication protocol,and RS-485 serial communication.Serial communication protocols supported include MODBUS and ASCII.An optional relay output board with two programmable alarm relay outputs and one fault relay output is available.An optional FlexVu®Explosion-Proof Universal Display Unit Model UD20 can be used for remote calibration.
Ideally suited for protection of challenging on/offshore oil and gas facilities and other downstream hydrocarbon applications,the PointWatch Eclipse is globally certified for use in Class I,Divisions 1 and 2,and Zones 1 and 2 hazardous areas.In addition,the stainless steel construction,sapphire optics,and modular design all combine to deliver industrial grade hardness along with easy installation and the lowest cost of ownership available.The PointWatch Eclipse is capable of detecting hundreds of flammable hydrocarbon gases and vapors.
The PointWatch Eclipse is performance certified to methane,propane,ethylene,and butane,and is shipped from the factory set and calibrated to one of these gases.Numerous additional operating parameters are programmable via digital communication or the optional hand-held communicator.
•卓越的鏡片保護(hù)系統(tǒng)。
•沒有未公開的故障模式。
•無需日常標(biāo)定。
•不銹鋼防爆外殼裝有系繩防雨防塵罩。
•整體式接線盒無需使用外部接線盒。
•內(nèi)置的三色LED指示燈無需使用外部顯示屏模塊。
•內(nèi)置的可選繼電器包無需使用外部繼電器輸出模塊。
•提供EQP模型。
•無干擾HART通信功能。
•可選手持式HART手操器支持現(xiàn)場配置和標(biāo)定。
•加熱的藍(lán)寶石鏡片能夠提供持久的高性能探測功能。
•不因接觸恒定背景氣體或高濃度氣體而受到損壞。
•獲得FM、CSA、ATEX、CE和IECEx認(rèn)證。
•氣體性能已通過FM/CSA/DEMKO驗(yàn)證。
Superior optics protection system.
No undisclosed failure modes.
SIL 2 model certified to IEC 61508 by exida®
Routine calibration not required.
Explosion-proof,stainless steel housing with tethered weather protection baffle.
Integral wiring compartment eliminates need for external junction boxes.
Built-in tri-color LED eliminates need for external display module.
Built-in optional relay package eliminates need for external relay output module.
EQP models available.
Non-interfering HART communication capability.
Optional Intrinsically Safe HART communication port
Optional hand-held HART communicator enables field configuration and calibration.
Optional model UD20 Universal Display for remote calibration.
Heated sapphire optics deliver long-lasting,high performance detection capability.
Immune to damage from exposure to constant background gases or to high gas concentrations.
FM,CSA,ATEX,IECEx,DNV/MED,and INMETRO certifications.
Certified to FM/CSA Class I,Div.1 and ATEX/IECEx Ex db,eb protection standards for maximum versatility.
Gas performance verification by FM/CSA/ATEX.
Certified,factory set and calibrated to methane,propane,ethylene,or butane.
Faster response output option available.
易燃烴氣*會(huì)通過防雨防塵罩?jǐn)U散至內(nèi)部測量室，而此測量室使用紅外(IR)源照明。紅外穿過室內(nèi)的氣體時(shí)，氣體將吸收某些紅外波長，而不吸收其它紅外波長。紅外吸收量由烴氣濃度確定。一對光探測器和關(guān)聯(lián)電子設(shè)備將測量吸收。吸收光的強(qiáng)度變化（測量信號）將使用非吸收波長（參考信號）的光強(qiáng)度來衡量。請參閱圖1。微處理器計(jì)算氣體濃度并將該值轉(zhuǎn)換為4至20毫安電流輸出或數(shù)字流程變量信號，接著再將此信號傳遞給外部控制和警報(bào)系統(tǒng)。
*烴氣是指由碳（C）和氫（H）元素組成的有機(jī)化合物，通常包括甲烷（CH4）、乙烷（C2H6）、丙烷（C3H8）、乙烯（C2H4）、丙烯（C3H6）、乙炔（C2H2）、丙炔（C3H4）等。
Input Voltage：
24 Vdc nominal.Operating range is 18 to 32 VdcRipple cannot exceed 0.5 volt P-P
Power Consumption：
4.0 watts nominal 24 Vdc
7.5 watts maximum 24 Vdc
10 watts maximum 32 Vdc
Short Circuit Current：
Isc:5.4 amperes
Isc(fuse):3.1 amperes
Power Supply Max Voltage:Um=250V
Warmup Time：
Two minutes from cold power-up to normal mode;1 hourminimum recommended.Current OutputRelays(Opt.)Linear 4-20 mA(current source/sink,isolated/non-isolatedrated at 600 ohms maximum loop resistance 24 Vdc operating voltage.
Temperature Range：
Operating:-55℃to+75°℃(-67°F to+167°F)
Storage:-55℃to+85℃(-67°F to+185°F)
Humidity：
0 to 99%R.H.(Det-Tronics verified)
5 to 95%R.H.(FM/CSA/DEMKO verified)
Detection Range：0 to 100%LFL standard(other ranges are configurable)
Detectable Gases：
Most flammable hydrocarbon vapors are detectable.Eclipse is performance certified to methane,propane,ethylene,and butane,and is shipped from the factory setand calibrated to one of these gases.
For detection of other gases,configuration using HART,MODBUS,or EQP system software,and device calibrationare required.
Device Configuration：
Configuration parameters include tag number,measurementrange,signal processing algorithm,alarm levels,and otherselectable parameters.
Response Time in Sec.(With Methane Appliedand Baffle Installed)：
Testing based on EN 60079-29-1See manual 95-8526 for other gases and other performance standardsSTD=Standard Response,FR=Fast Response*STD based on 100%LFL applied,FR based on 50%LFL applied
Alarm Setpoint Range：
Low Alarm:5 to 60%LFL
High Alarm:5 to 60%LFL.
Note:Low alarm range for EQP model is 5-40%LFL
Accuracy：±3%from 0 to 50%LFL,±5%from 51 to 100%LFL
Self-Diagnostic Test：All critical tests performed once per second.
Detector Housing Material：Stainless Steel(316/CF8M Cast)
Conduit Entry Options：Two entries,3/4 inch NPT or 25 mm
Wiring Terminals：Field wiring screw terminals are UL/CSA rated for up to 14AWG wire,and are DIN/VDE rated for 2.5 mm2 wire.
Shipping Weight(Approx.)：10.5 Ibs.(4.8 kg)
Dimensions：L=9.3 in(23.62 cm),W=5.2 in(13.21 cm),H=4.6 in(11.68 cm)
Certifications：
FM&CSA、ATEX、CE、IECEx、INMETRO、DNV、SIL
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