140CPU65160C

140CPU65160C

140CPU65160C

140CPU65160C

140CPU65160C

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。

ADVANCED MICRO CONTROLS 1931 INTELLIGENT RESOLVER INTER

YASKAWA JANCD-CP06-02 CONTROL BOARD (NEW SURPLUS)

YASKAWA GPD515C-B011 (7.5 HP DRIVE) 380-460V GOOD TAKEO...

OMRON C500-AD002 A/D UNIT GOOD TAKEOUT

CHICAGO PNEUMATICS ELECTRIC DYNA-TORK K-259558-42 (R-SE...

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AQUAVAR AV2V40100D G&L PUMP CONTROLLER (10 HP) GOOD TAK...

SIEMENS 6 RA 2120-6DV66-0 (D400/35) SIMOREG GOOD TAKEOU...

GRAFIKONTROL 9118-I (9119cu V EDIZ) NEW OLD STOCK

SIEMENS 6ES5-251-1AA11 SERIAL MODULE (REFURBISHED)

ALLEN BRADLEY 1336S-BRF75-AA-EN-HA1-L4 (1336 PLUS DRIVE...

INDRAMAT SIOB-01-00 COMMUNICATIONS PROCESSOR GOOD TAKEO...

INDRAMAT PLCB 01-02 INTERBUS MODULE GOOD TAKEOUT

MITSUBISHI 101 PULSE MOTOR DRIVER GOOD TAKEOUT

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SIEB & MEYER 26.44.14 BETA TECH CP3 MODULE RECON BY K&S

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FOXBORO ULTRASONIC OSCILLATOR A204OUS NEW IN BOX WITH C...

CUTLER HAMMER NS361000A CIRCUIT BREAKER GOOD TAKE OUT

CINCINNATI MILACRON 3-531-4654A BOARD EXCELLENT CONDI...

SIEMENS 6ES7 414-2XG01-0AB0 CPU MODULE SIMATIC S7 GOOD ...

SEW EURODRIVE MDV60A0015-5A3-4-00 MOVIDRIVE (XLNT) GOOD...

FANUC IC600BF949M (28K ASCII I/O) GOOD TAKEOUT

GRAPHICS MICROSYSTEMS INC. 090G100001 CONTROLLER *XLNT*

BOSCH VM 60-T POWER SUPPLY (AC 400V) *XLNT CONDITION*

PANASONIC MSD153A1W AC SERVO DRIVER GOOD TAKEOUT

MICROMATIC TEXTRON MMC93H-M2-24-CE MOTION CONTROLLER

YASKAWA CACR-TS111Z1SR SERVOPACK GOOD TAKEOUT

SIEMENS 6ES5243-1AB11 ANALOG MODULE XLNT CONDITION

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HONEYWELL 51304542-100 I/O CONTROL BOARD KLCN BRAND NEW...

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SIEMENS 6ES5324-3UR11 INTERFACE MODULE XLNT CONDITION

CUTLER HAMMER D725SVP232HDWNT INDUSTRIAL COMPUTER

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FOXBORO ECKARDT SRI986-B1DS7FAANA POSITIONER (NEW!)

FANUC A06B-0314-B251 MODEL 5S SERVO MOTOR GOOD TAKEOUT

FANUC A06B-0341-B231 SERVO MOTOR (MODEL-OF) NEW!

SIEMENS 6RA8222-1BA0-0 DRIVE OPTION BOARD REFURBISHED

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SIEMENS 6SC6506-0AA00 DRIVE BOARD NICE USED TAKEOUT

EMERSON DXA-318 POSITIONING SERVO DRIVE WITH PCM1 CONTR...

ALLEN BRADLEY 1771-NT2/B HIGH RESOLUTION ANALOG SERIES

SIEMENS 6FX1154-8BB01 VIDEO CARD *XLNT CONDITION*

ABB ACS550-U1-09A0-6 7 1/2 HP.9A DRIVE XLNT CONDITION

SEM HD 115B6-88T SERVO MOTOR 6000 RPM RECONDITIONED

EMERSON FX-6120 POSITIONING SERVO DRIVE 240 VOLT, GOOD ...

RELIANCE ELECTRIC 1SU51007 SP500 7 1/2 HP. GOOD DRIVE

KOLLMORGEN BDS4A-103J-0015/102A21P SERVO AMPLIFIER GOOD...

SIEMENS 6SC6500-0NA02 SIMODRIVE CONTROL BOARD

WTC 503-7-0324 SERIES 400 CASCADE MODULE GOOD TAKEOUT

SIEMENS 6RB2025-0FA00 POWER SUPPLY GOOD TAKEOUT

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MITSUBISHI NUMERICAL CONTROL SYSTEM UF701C MELDAS TM2C ...

TELEMECANIQUE TSXP47455 PROCESSOR UNIT REFURBISHED!!

LIEBERT 02-790811 10 PWA LOGIC BOARD (NEW)

LIEBERT 03-790811 90 PWA LOGIC BOARD (NEW)