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PIRECL是基于扩散的红外可燃气体探测器，可持续、固定地监控易燃下限(LFL)从0至100%的易燃烃气。标准设备输出含有电气隔离的4至20毫安信号（带HART通信协议和RS-485串行通信）。受支持的串行通信协议包括MODBUS和ASCII。
PIRECL系列探测器非常适用于保护极具挑战性的陆上/海上石油和燃气设施以及其它下游烃气应用，经全球认证用于Class I、Division 1和2以及Zone 1和2危险区域。此外，它的不锈钢结构、蓝宝石镜片和模块设计的结合提供了工业级的硬度，且易于安装，维护成本低。
探测器能够探测数百种易燃烃气。为甲烷（默认）、乙烷、丙烷、丁烷、乙烯和丙烯提供了可现场选择的算法。通过数字通信或可选手持式手操器能够编程大量其它的工作参数。
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.
•卓越的镜片保护系统。
•没有未公开的故障模式。
•无需日常标定。
•不锈钢防爆外壳装有系绳防雨防尘罩。
•整体式接线盒无需使用外部接线盒。
•内置的三色LED指示灯无需使用外部显示屏模块。
•内置的可选继电器包无需使用外部继电器输出模块。
•提供EQP模型。
•无干扰HART通信功能。
•可选手持式HART手操器支持现场配置和标定。
•加热的蓝宝石镜片能够提供持久的高性能探测功能。
•不因接触恒定背景气体或高浓度气体而受到损坏。
•获得FM、CSA、ATEX、CE和IECEx认证。
•气体性能已通过FM/CSA/DEMKO验证。
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.
易燃烃气*会通过防雨防尘罩扩散至内部测量室，而此测量室使用红外(IR)源照明。红外穿过室内的气体时，气体将吸收某些红外波长，而不吸收其它红外波长。红外吸收量由烃气浓度确定。一对光探测器和关联电子设备将测量吸收。吸收光的强度变化（测量信号）将使用非吸收波长（参考信号）的光强度来衡量。请参阅图1。微处理器计算气体浓度并将该值转换为4至20毫安电流输出或数字流程变量信号，接着再将此信号传递给外部控制和警报系统。
*烃气是指由碳（C）和氢（H）元素组成的有机化合物，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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