日本費(fèi)加羅FIGARO二氧化碳傳感器 TGS4160

1、TGS 4160 - for the detection of Carbon Dioxide* High selectivity to CO2* Low dependency on humidity* Long life* Air quality control* CO2 control in agricultural applications* CO2 monitoringThe TGS4160 is a hybrid sensor unit composed of a carbon dioxide sensitiveelement and a thermistor. A wide rang

2、e of 35050,000ppm of carbon dioxidecan be detected by TGS4160, making it ideal for usage in a variety of applications.The CO2 sensitive element consists of a solid electrolyte formed between twoelectrodes, together with a printed heater (Pt) substrate. By monitoring thechange in electromotive force

3、(EMF) generated between the two electrodes, itis possible to measure CO2 gas concentration.Adsorbent (zeolite) is filled between the internal cover and the outer cover forthe purpose of reducing the influence of interference gases.TGS4160 exhibits a linear relationship between EMF and CO2 gas concen

4、trationon a logarithmic scale. The sensor displays good long term stability and showsexcellent durability against the effects of high humidity.The figure below represents typical sensitivity characteristics ofTGS4160. The Y-axis is indicated as EMF which is defined asfollows:EMF=EMF1 - EMF2The figur

5、e below shows typical humidity dependency for anenergized sensor. Again, the Y-axis is indicated as EMFwhich is defined as follows:wherewhereEMF=EMF1 - EMF2EMF1=EMF in 350 ppm CO2EMF2=EMF in listed gas concentrationEMF1=EMF in 350 ppm CO2 EMF2=EMF in 1000ppm CO2地址：廣東省深圳市龍華新區(qū)牛欄前大廈蔣小姐：電話：網(wǎng)址：The TGS416

6、0 sensor requires heatervoltage (VH) input. The heater voltage isapplied to the integrated heater in orderto maintain the sensing element at aspecific temperature which is optimalfor sensing. Electromotive force (EMF)of the sensor should be measured usinga high impedance ( 100 G) operation-al amplif

7、ier with bias current 1pA (e.g.Texas Instruments model #TLC271).Since the solid electrolyte type sensorfunctions as a kind of battery, the EMFvalue itself would drift using this basicmeasuring circuit. However, the changeof EMF value (EMF) shows a stablerelationship with the change of CO2concentrati

8、on. Therefore, in order toobtain an accurate measurement ofCO2, a special microprocessor for signalprocessing should be used withTGS4160. Figaro can provide a specialevaluation sensor module (AM-4) forTGS4160.Operational amplifier IBIAS typ. 1pAThermistor+13-VHEMFTGS4160GNDThermistorGreen DotBottom View (Sensor Element)Side view (Sensor Element)B : Pt HeaterF : Sealing GlassE : Counter Electrode (Ano