UAGCSPSEWLBU_大德汇成科技（厦门）有限公司

UAGCSPSEWLBU

NDIR系统存在的一个主要问题是随着时间的推移，如何准确地知道发送给检测器的光线变化是否真的因气体吸收所引起，而不是光源变化或者舱室污染所引起。尽管在NDIR系统工作之初进行校正是可能的，但是为了应对随着时间推移而出现的光源变化和舱室污染问题，要求不断进行校准。这样做成本很高昂、耗费时间，并且在长期现场运行过程中也不可行。解决这个问题的一个方法是，在你的系统中使用一条基准通道。该基准通道包含一个检测器，在没有光线吸收的范围内测量光源。现在，气体浓度由两个发送光量之比来决定。光源偏差引起的任何误差现在都被抵消。这种偏差导致长期漂移，其出现在较大的时间段内。因此，无需同时对基准和有源通道进行采样。你可以使用一个输入多路复用器(MUX)来在两条通道之间切换，从而降低系统成本和复杂程度，并同时维持度

在NDIR系统中用作红外检测器的热电堆根据其接收的入射光多少(单位为瓦特)来产生电压。被测气体类型、其吸光系数和气体浓度范围都影响热电堆检测器的入射光线量。它产生热电堆输出电压(范围通常为数十μV)。因此，你需要设计出具有使用不同增益放大热电堆输出电压功能的电子支持组件。可以通过一个含内置PGA的模拟前端(AFE)来处理这种情况。要求使用数百到数千V/V范围的增益设置，来把小热电堆信号放大到系统全刻度模数转换器(ADC)，从而实现大系统度。

WS-X6748-GE-TX Cisco Express Forwarding 720 Interface Module Switch 48 ports -

WS-X6748-GE-TX Cisco Exp. Forw.720 Interface Module Switch 48 ports ma

WS-X6724-SFP CISCO Gigabit Interface Module 6500/7600 24 ports

WS-X6708-10G-3C Cisco 8-Port 10 Gigabit EN Module with DFC3C module 8 ports

WS-X6708-10G-3C Cisco 8-Port 10 Gigabit EN Module with DFC3C module 8 po

WS-X6704-10GE Cisco 6500 10 Gigabit EN Interface Module 4 ports

WS-X6548-GE-TX Cisco Switching Module FREE 1 YEAR

WS-X6516-GE-TX CATALYST 6500 16-PORT GIG/COPPER MODULE X-BAR

WS-X6502-10GE CISCO 6500 10 GIGABIT ETHERNET BASE MODUL

WS-X6148-GE-TX Cisco Classic Interface Module Expansion module 48 ports

WS-X6148A-GE-TX Cisco Classic Interface Module Expansion module 48 ports Switch

WS-X6148A-GE-45AF CISCO 6500 SWITCH MODULE 48 Ports POE 802.3AF

WS-X4904-10GE Cisco 4-Port 10 Gigabit Ethernet X2 Expansion Module

WS-X4712-SFPE Cisco Catalyst 4500 E-Series 12Pt.-10GBE SFP MODULE

WS-X4648-RJ45V-E Cisco Catalyst 4500E Series Line Card Switch 48 ports

WS-X4648-RJ45VE Cisco 48-Port PoE Line Card 48 x 10/100/1000Base-T LAN

WS-X4648-RJ45-E CISCO Catalyst 4500E Series Line Card Switch 48 ports

WS-X4648-RJ45-E CATALYST 4500 E-SERIES 48-PORT 10/100/1000 RJ45

WS-X4624-SFP-E Cisco Line Card E-Series Expansion module 24 ports

WS-X4624-SFP-E CATALYST 4500 E-SERIES 24-PORT GE SFP

WS-X4624-SFP-E 2YR ServerPartsCanada.com

WS-X45-SUP6L-E Cisco Supervisor Engine 6L-E Control processor

WS-X45-SUP6-E Cisco Supervisor Engine 6-E Control processor 1YR WARRAN

WS-X45-SUP6-E Cisco Supervisor Engine 6-E Control processor

WS-X4516 Cisco Supervisor Engine V 4516 Control processor

WS-X4515 CISCO CATALYST 4500 SUPERVISOR IV ENGINE W/2 GE

WS-X4448-GB-SFP CISCO CATALYST 4500 48-PORT 1000BASE-X

WS-X4148-RJ21 CATALYST 4500 10/100 MODULE 48-PORTS TELCO 4XRJ21

WS-SVC-WISM-1-K9 CISCO Wireless Service Module WiSM for up to 300 Lightweight

WS-SVC-SSL-1-K9 CISCO SSL MODULE FOR CATALYST 6500

WS-SVC-FWM-1-K9 Cisco Firewall Service Module Security appliance

WS-SVC-CMM-6T1 6-PORT T1 INTERFACE PORT ADAPTER

WS-SVC-CMM-6E1 6-PORT E1 INTERFACE PORT ADAPTER 1YR - ASK 4 QTY

WS-SUP720-3BXL Cisco Supervisor Engine 720-3BXL Control processor

WS-SUP720-3BXL WS-X6716-10G-3CXL CiscoDeal

WS-SUP720-3BXL 1 WS-X6708-10G-3C Super Cisco Bundle

WS-SUP720-3B Cisco Supervisor Engine 720 with PFC3B Control processor

WS-SUP720 Cisco Supervisor Engine 720 Control processor

WS-G5487 GENUINE CISCO 1000BASE-ZX EXTENDED REACH GBIC S.MODE

WS-G5486 LL GBIC FOR CISCO 1000BASE-LX/LH LONG HAUL S.MODE OR M.MODE

WS-G5486 CISCO 1000BASE-LX/LH LONG HAUL GBIC SINGLEMODE OR MULTIMODE

WS-F6K-PFC3B CATALYST 6500 SUP720 POLICY F. CARD-3B 1YR - ASK 4 QTY

WS-F6K-MSFC2 CATALYST 6000 MULTILAYER SWITCH FEATURE CARD MSFCII SPARE

WS-F6K-DFC3A DIST FWD CARD-3A FOR 65XX 6816 MODULES WITH SUP720

WS-F6700-DFC3C Cisco Distributed Forwarding Card 3C Switching accelerator

WS-F6700-DFC3BXL Cisco Distributed Forwarding Card 3BXL Switching accelerator

WS-F6700-DFC3B Cisco Distributed Forwarding Card 3B Switching accelerator

WS-CE500G-12TC Cisco Catalyst Express 500G-12TC Ethernet Switch

WS-CDC-2500W CATALYST 6500/7600 2500W DC POWER SUPPLY

WS-CDC-1300W CATALYST 6500 1300W DC POWER SUPPLY

WS-C6509-E SUP720-3BXL X6724-SFP X6748 6509

WS-C6509-E CATALYST ENHANCED 6509 CHASSIS 9 15RU

WS-C6509 CISCO CAT 6509 CHASSIS 9 15RU

WS-C6506-E-FAN CATALYST 6506-E CHASSIS FAN TRAY

WS-C6506-E CATALYST 6506 ENHANCED CHASSIS 6 12RU

WS-C6506 CISCO CAT 6506 CHASSIS 6 12RU W/1300W AC PS

WS-C6503-E ENHANCED CISCO CAT 6503 CHASSIS 3 4RU

WS-C6503 CISCO CAT 6503 CHASSIS 3 4RU

WS-C4507R CATALYST 4500 CHASSIS 7-

WS-C4506-E CISCO

WS-C3750G-48TS-S CISCO 3750G-48TS SWICTH W/1 YR -WSC3750G48TSS

WS-C3750G-16TD-S FREE 1 YEAR - CATALYST 3750G SWITCH

WS-C3750-24P-AP50 CISCO WS-C3750-24PS-S AND AIR-WLC-4402-50 BUNDLE

WS-C3560V2-24TS-SD FREE 1 YEAR CISCO 3560V2 SWITCH

WS-C3560E-48TD-SD FREE 1 YEAR -3560E CISCO SWITCH

WS-C3560E-48PD-SF FREE 1 YEAR CISCO WSC3560E48PDSF

WS-C3560-48PS-S CISCO 3560-48PS SWICTH W/1 YR -WSC356048PSS Fast Shipp

WS-C3560-24TS-S Cisco Cat 3560 SWITCH 24 10/100 2 SFP SLOTS

WS-C3550-24PWR-SMI CISCO CAT SWITCH 24-10/100 INLINE POWER 2 GBIC PORTS: SMI

WS-C3550-24-DC-SMI CISCO 3550 SWITCH 24-10/100 2 GBIC PORTSDC-PWRD: SMI

WS-C3550-12T CISCO SWITCH 10-10/100/1000 PORTS 2 GBIC PORTS: EMI

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WS-C2970G-24TS-E CISCO Switch w/1year -WSC2970G24TSE 2970G24TSE

WS-C2960S-24TS-L CISCO 2960S-24TS SWICTH W/1 YR -WSC2960S24TSL Fast Sh

WS-C2960-48TC-S CISCO CATALYST 2960-48TC SWITCH-1YEAR - GRADE A Fast Shi

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WS-C2960-24-S Cisco Catalyst 2960-24-S Switch 24 ports managed

WS-C2960-24LT-L Cisco Catalyst 2960 Switch 24 ports managed

WS-C2955C-12 Cisco Catalyst 2955C-12 Ethernet Switch 12TX W/MM UPLINKS

WS-C2950T-48-SI CISCO CAT. SWITCH 48 10/100 2 10/100/1000BASE-T UPLINKS STD I

WS-C2950G-48-EI CISCO CAT. SWITCH 2950 48 10/100 WITH 2 GBIC SLOTS

WS-C2950G-24-EI-DC CISCO SWITCH 24 10/100 2 GBIC SLOTS DC VERSION

WS-C2940-8TT-S 8 10/100 ETHERNET PORTS AND 1 10/100/1000 ETHERNET PORT

WOODWARD NETCON 5000 5466-315 REV C ANALOG I/O MODULE

WOODWARD NETCON 5000 5466-258 REV E DISCRETE I/O MODULE

WOODWARD NETCON 5000 5466-031 REV D I/O CONTROLLER

Woodward Governor 5466-258 Module Discrete I/O NIP 8097

Woodhead SST-PFB-CLX PROFIBUS Scanner for ControlLogix READ

Woodhead SST-PFB-CLX PROFIBUS Scanner for Allen-Bradley

Woodhead SST SST-PFB-SLC ProfiBus Scanner for Allen Bradley SLC500

Woodhead SST SST-PFB-PLC5 ProfiBus Coprocessor for Allen Bradley PLC5

Woodhead SST Allen Bradley 5136-SD-ISA DH/DH/RIO ISA Interface Card

WMD PDO PHASE DISPLACEMENT OSCILLATOR MODULAR EURORACK MODULE

With GBICs