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3、灵敏度
灵敏度是指检测仪输出变化量与被测输入变化量之比，主要依赖于传感器。所以，要根据待测气体的种类，根据需要选择合适的传感器，它对目标气体的阈限制(毒性PC或者TLV)或爆炸下限(LEL)的百分比的检测要有足够的灵敏性。
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选择性也被称为交叉灵敏度，可通过测量某一种干扰气体所产生的响应来确定。交叉灵敏度会降低测量的重复性和可靠性，理想的气体检测仪应具有高选择性。
5、容忍性
容忍性是指检测仪暴露于高浓度目标气体中的承受能力。在气体大量泄漏时，探头应能够承受期望气体浓度10~20倍，并可以在可能被损坏之前得到保护，尽量减少伤害。 6XF-2008-6KB00 Blank Filler 6U High 4HP Wide Siemens
6XF-2016-6KB 1" Blank Filler Plate ABB
6XF-2016-6KB00 Blank Filler Plate ABB
6XG3400-2CK00 FAN TRAY BATTERY HOLDER Siemens
6XG3400-2DK10 Battery Holder for Siemens Rack Siemens
6XG3408-1AA26 Fan Assembly Siemens
6XV1418-OCH32 Cable Siemens
6XV1425-0AE50 FPHGR1 cable connector for video,signal transmission Siemens
6XV1440-2AH10 CABLE 6XV1 440-2A,TD/OP&S5-90U -155U,1M Siemens
6XV1440-2AH20 CABLE 6XV1 440-2A,TD/OP&S5-90U -155U,2M Siemens
6XV1440-2AH25 TTY passiv Data network Cable Transfer Siemens
6XV1440-2AH32 Cable Siemens
6XV1440-2AH40 CABLE 6XV1 440-2A Siemens
6XV1440-2AH50 Cable Siemens
6XV1440-2AH80 CABLE 6XV1 440-2A Siemens
6XV1440-2AN10 6XV1440-2A CONNECTING CABLE,10M Siemens
6XV1440-2AN20 CABLE TD/OP S5-90U TO -155U 20 M Siemens
6XV1440-2AN32 CABLE TD/OP S5-90U TO -155U 32 M Siemens
6XV1440-2KH15 CONNECTION CABLE BETWEEN TD/OP (RS232 / Siemens
6XV1440-2KH20 CABLE TD/OP 545/555 SLC5(3,4) RS232 2M Siemens
6XV1440-2KH32 OP Communications Cable -3.2 meters Siemens
6XV1440-4AH20 CABLE MOBILE 170 2M Siemens
6XV1440-4AH50 CABLE MOBILE 170 5M Siemens
6XV1440-4AH80 CONNECTING CABLE FOR MOBILE PANELS (MPI/ Siemens
6XV1440-4AN10 CABLE MOBILE 170, 10M Siemens
6XV1440-4AN15 CONNECTING CABLE FOR MOBILE PANELS,15M Siemens
6XV1440-4AN20 CONNECTING CABLE,MOBILE PANELS,20M Siemens
6XV1440-4AN25 CABLE MOBILE 170, 25M Siemens
6XV1440-4BH20 CONNECTING CABLE PN,MOBILE PANEL,2M Siemens
6XV1440-4BH50 CONNECTING CABLE PN FOR MOBILE PANELS,5M Siemens
6SY7000-0AE42 MASTERDRIVES WR CONDUCTOR BARS Siemens
6SY7000-0AE45 WR CONDUCTOR BARS (CU) B7 Siemens
6SY7000-0AE51 MC COMPACT PLUS CONNECTOR KIT Siemens
6SY7000-0AE57 FUSE LINK FNQ-R-8/10, 0.8 A, 600V Siemens
6SY7000-0AE60 DC LINK CAPACITORS,6000 UF, 800V Siemens
6SY7000-0AE63 SIMOVERT MD ZK-BATTERY 10MF/800V (AL)B7 Siemens
6SY7000-0AE71 IGBT TRANSISTOR MOD,200A,1200V Siemens
6SY7000-0AE72 RADIAL FAN AY 250/B7 FOR SIZE G Siemens
6SY7000-0AE74 DC FUSE LINK 63A Siemens
6SY7000-0AE75 SIMOVERT MD KOMPAKT +DC LINK FUSE 100A Siemens
6SY7000-0AE77 MD DESIGN KOMPAKT+ DC-FUSE 25A Siemens
6SY7000-0AE78 OPEN AND CLOSED-LOOP CONTROL MODULE Siemens
6SY7000-0AE80 FAN,MD KOMPAKT,TY 614 Siemens
6SY7000-0AE81 SIMOVERT MASTERDRIVES DESIGN KOMPAKT PLU Siemens
6SY7000-0AE82 MD,SIMOVERT,KOMP+, 614A (SPAREPARTONLY) Siemens
6SY7000-0AE83 MD,SIMOVERT,COMP, 8414 (SPAREPARTONLY) Siemens
6SY7000-0AE84 SIMOVERT MD DESIGN KOMPAKT+ FAN 414 A Siemens
6SY7000-0AE85 MC MODULE, CUCP02 KOMPAKT+(SPAREPARTONLY Siemens
6SY7000-0AE86 SIMOVERT MASTERDRIVES KOMPAKT+ FAN 414B Siemens
6SY7000-0AE87 MD,SIMOVERT,KOMP+, 614B(SPAREPARTONLY) Siemens
6SY7000-0AE88 MD,SIMOVERT,COMP, 8414B (SPAREPARTONLY) Siemens
6SY7000-0AF04 FAN, CPL. F. B1,24V DC,SPARE PART Siemens
6SY7000-0AF06 MDVC FRAME SIZE COMP+,CUVP02 PAINTED Siemens
6SY7000-0AF10 TRANS NPN IGBT,BSM200GA170DN2S,1.7KV Siemens
6SY7000-0AF11 IGBT-TRANS MOD BSM300GA170 DN2S,300A Siemens
6SY7000-0AF12 SIMOVERT MD,IGBT-TRANS,DN2S,400A,1200V Siemens
6SY7000-0AK02 SIMOVERT MD WR CONDUCTOR BARS (CU) B7 Siemens
6SY7000-0AK04 DC FUSE LINK ,160A,700V Siemens
6SY7000-0AK05 DC FUSE LINK ,200A,700V Siemens
6SY7000-0AK40 EBV MODULE MD VECTOR CONTROL Siemens
6SY7000-0AC74 FUSE LINK ,50A,700V FWP50A22F Siemens
6SY7000-0AC76 IGBT TSTR MODULE 1MBI400NA-120 Siemens
6SY7000-0AC84 IGBT TSTR MOD. FZ900R12KF1 Siemens
6SY7000-0AC85 IGBT TSTR MOD. BSM100GB120DN2 Siemens
6SY7000-0AD16 TRANSF.FOR FAN AC380,400,460V-AC230V1.85 Siemens
6SY7000-0AD26 CONNECTORS FOR CUMC CHASSIS UNITS E-G Siemens
6SY7000-0AD27 TERMINAL BLK SET,X101-103,CUVC, Siemens
6SY7000-0AD28 TERMINAL BLK PLUG SET,CUVC,E-K FRAME S Siemens
6SY7000-0AD30 TERMINAL BLOCK PLUG SET Siemens
6SY7000-0AD31 CONN.SET VC Siemens
6SY7000-0AD38 CONNECTOR SET MASTERDRIVES 6SE70..-..51 Siemens
6SY7000-0AD42 FUSE LINK AM104. 4A,500V Siemens
6SY7000-0AD43 FUSE LINK AM106. 6A, 500V Siemens
6SY7000-0AD44 FUSE LINK AM1410. 10A, 690V Siemens
6SY7000-0AD46 FUSE LINK AM1420. 20A, 690V Siemens
6SY7000-0AD60 SCREEN CLAMPS, 15 PER PACK Siemens
6SY7000-0AD65 CAPACITOR MASTERDRIVES DC 3300UF 800V Siemens
6SY7000-0AD66 INTERMED.CAP.WITH HOLDER 14100UF,800V Siemens
6SY7000-0AD67 DC LINK CAPACITOR W/HLDR 150000UF,800V Siemens
6SY7000-0AD68 DC LINK CAPACITORS W/HLDR 4500UF,1200V Siemens
6SY7000-0AD73 DC LINK CAPACITOR W/HLDR 2200 UF,800V Siemens
6SY7000-0AD74 INTERM.CAPACITOR AY W/HLDR 6000UF 800V Siemens
6SY7000-0AD76 DC LINK CAPACITORS W/HLDR 7500UF,800V Siemens
6SY7000-0AD77 CAP.AY W/HLDR 10000UF 800V Siemens
6SY7000-0AD78 CAP.INTERM.W/HLDR 17500UF 800V Siemens
6SY7000-0AD81 MD DC LINK CAPACITORS,RACK 5000 UF,1000V Siemens
6SY7000-0AE24 DC LINK CAPACITORS, 15000 UF, 800 V Siemens
6SY7000-0AE27 SUPPLEMENT 6SY7000-0AE27 F.WATER CO> Siemens
6SY7000-0AE28 SUPPLEMENT 6SY7000-0AE28 F.WATER CO> Siemens
6SY7000-0AE34 THYRISTOR MDLE W/ACCESSRIES REPLACEMENT Siemens
6SY7000-0AA54 TRANSF.FOR FAN 3AC 380-500V-AC 230V Siemens
6SY7000-0AA55 TRANSFMR FOR FAN,3AC 500-575V-AC,230V Siemens
6SY7000-0AA56 TRANSFORMER AY FOR FAN 3PH 380-500V 230V Siemens
6SY7000-0AA60 PRECHARGE RESISTOR 2 X 15 OHM Siemens
6SY7000-0AA63 PRECHARGE RESISTOR 2 X 27 OHM Siemens
6SY7000-0AA75 PROT CIRC RESISTOR HPP,2X3K3,110W,5PRCT, Siemens
6SY7000-0AA83 MASTERDRIVE Resistor Siemens
6SY7000-0AB01 THYRSTR MOD,2X85A,1800V,TT85N18KOF Siemens
6SY7000-0AB10 MKP CAP.FOR FAN 4UF,400V Siemens
6SY7000-0AB15 MKP CAPACITOR FOR FAN 5UF,400V Siemens
6SY7000-0AB21 CUR.TRANSF.ES1000-9662 390A Siemens
6SY7000-0AB23 6SE70,DOOR,FRAME SIZE B Siemens
6SY7000-0AB24 6SE70,DOOR,FRAME SIZE C Siemens
6SY7000-0AB30 RADIAL FAN UNIT 220 T.O.CONST.F Siemens
6SY7000-0AB32 TRANSF.FOR FAN 3PH,380-460V 1PH 230V Siemens
6SY7000-0AB50 CAPACITOR COMPL.W/HLDR 3500UF,1000V Siemens
6SY7000-0AB64 CAP.MKP FOR FAN 10UF 400V Siemens
6SY7000-0AB66 RADIAL FAN UNIT FOR TYPE G CONSTRUCTION Siemens
6SY7000-0AC01 FUSE INSERT 170M 2718 350A 660V Siemens
6SY7000-0AC02 FUSE LINK 170M 3720 450A 660V Siemens
6SY7000-0AC03 FUSE-LINK 170M 6710 630A 660V Siemens
6SY7000-0AC05 FUSE AY 550A 660V Siemens
6SY7000-0AC08 TERM.SET,FC DRIVES A TO D Siemens
6SY7000-0AC10 TERM.SET,VC DRIVES A TO D, CU2 Siemens
6SY7000-0AC12 TERM. SET,FC DRIVES E TO H Siemens
6SY7000-0AC13 TERM. SET,VC DRIVES E TO M,CU2 Siemens
6SY7000-0AC45 FUSE INSERT FNQ-R-6/10,0.6A,600V Siemens
6SY7000-0AC46 Fuse Link Siemens
6SY7000-0AC72 FUSE LINK 100A,700V FWP100A22F Siemens
6SY7000-0AC73 FUSE LINK ,80A,700VFWP80A22F Siemens