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Zabezpieczenia: o-olejowe p-nadciśnieniowe q-piaskowe d-szczelne e-zwiększonego bezp. I-samoistnie bezpieczne Grupy wybuchowości: I- metan, IIa,

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Prezentacja na temat: "Zabezpieczenia: o-olejowe p-nadciśnieniowe q-piaskowe d-szczelne e-zwiększonego bezp. I-samoistnie bezpieczne Grupy wybuchowości: I- metan, IIa,"— Zapis prezentacji:

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6 Zabezpieczenia: o-olejowe p-nadciśnieniowe q-piaskowe d-szczelne e-zwiększonego bezp. I-samoistnie bezpieczne Grupy wybuchowości: I- metan, IIa, IIb IIc Max. temp. pow. T1 – 450°C T2 – 300 °C T3 –200 °C T4 – 135 °C T5 –100 °C T °C

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8 A A

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10 Prawo Daltona 1 pound per square inch = pascals

11 Solid-State Chemical Sensors Metal-oxide semiconductor layer –Usually tin dioxide (SnO 2 ) Apply heat –In air Surface oxygen increases (negatively charged) Resistance increases –In presence of deoxidizing gas Surface oxygen decreases Resistance decreases

12 Figaro Engineering, Inc. Chemical gas sensors –LP-Gas/Propane ( ppm) –Natural gas/Methane ( ppm) –General combustible gas ( ppm) –Hydrogen ( ppm) –Carbon monoxide ( ppm) –Ammonia (30-300ppm) –Hydrogen sulfide (5-100ppm)

13 How They Work

14 Półprzewodnikowy czujnik CO z SnO 2, Firgaro 2442

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16 TGS 2442 Basic Measuring Circuit 1 second heating cycle 1 second circuit voltage cycle

17 Figaro TGS 2442 Features: –Low power consumption –High sensitivity/selectivity to carbon monoxide (CO) –Miniature size –Low sensitivity to alcohol vapor –Long life and low cost –Low humidity dependency

18 TGS 2442 Specifications

19 Figaro TGS 2442 Carbon Monoxide Sensor Applications: –CO detectors –Air quality controllers –Indoor parking lot ventilation Gas sensing layer –Tin dioxide (SnO 2 )

20 Półprzewodnikowy czujnik metanu z SnO 2, Firgaro 2611

21 VHVH 0,2V 0,9V Podwójny czujnik metanu i CO, Figaro 3870

22 Czujnik podwójny na gazy wydechowe: NO 2, H 2, CO

23 MicroChemical Systems SA Chemical gas sensors –Ozone ( ppm) –Nitrogen Dioxide (0.05-5ppm) –Ethanol ( ppm) –CO / NO 2 (1-400ppm/0.05-5ppm) –Carbon Monoxide & HCs (1-400ppm)

24 MicroChemical Systems MiCS-3110 Ethanol Sensor Applications: –Breathalizer: (Blood Alcohol Content) –Various industrial applications Gas sensing layer –Tin dioxide (SnO 2 )

25 MicroChemical Systems MiCS-3110 Features: –Low heater current –Wide detection range –High sensitivity –Fast thermal response –Electro-Static Discharge protected –Miniature dimensions –High resistance to shocks and vibrations

26 MiCS-3110 Basic Measuring Circuit Run in constant voltage mode Heater voltage of V H = 2.4 V –increases temperature of R s to 430°C

27 MiCS-3110 Specifications

28 SnO 2 for Ethanol Sensing RS = Sensor resistance to C 2 H 5 OH R 10ppm = Sensor resistance resistance in 10 ppm of C 2 H 5 OH

29 Chemical Sensor Arrays Array of polymer composite sensors Swell in presence of vaporized analyte –Conductive polymer pathways broken –Resistance increases Different gases produce different responses

30 Cyrano Sciences, Inc. Cyranose® 320 Hand-held chemical vapor sensor 32 thin-film carbon-black chemiresistors Trained by taking different measurements –Create a database of patterns –Match odors against saved patterns

31 Cyranose® 320 Specifications

32 Cyrano Sciences, Inc. NoseChip TM Under development –Low cost, low power, lightweight sensing –Optional short-range wireless capability Applications –Sensing nodes for facilities protection –Personal badge detectors for toxic industrial chemicals and chemical warfare agents –Residual life indication –Leak detectors in military or commercial systems –Quality monitors in embedded systems

33 NoseChip TM Specifications

34 Elektrolityczny czujnik CO 2 z elektrolitem stałym Figaro 4160

35 Elektrolityczny czujnik O 2 ( 450 zł) żywotność 5 do 10 lat

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37 Edinburgh Instruments GasCard II pomiar steżenia CO 2 zakresy od ppm do ppm Niepewność 2-6% niestabilność jednoroczna 2-6% w zależności od zakresu CO, CO 2, CH 4 NO 2 Czujniki oparte na pochłanianiu promieniowania podczerwonego

38 DESCRIPTION The SensorChip CO2 sensor is a highly integrated single component IR device containing all elements of an NDIR optical bench on a single MEMS chip. This miniature device generates narrowband infrared radiation tuned to CO2, eliminating the need for optical filters. The emitter provides tuned output with 85% of the blackbody power at the CO2 wavelength and suppresses emission at other bands for high CO2 selectivity and power efficiency. This is achieved through ICx Photonics patented PCE (photonic crystal enhanced) emitter technology. Czujniki oparte na pochłanianiu promieniowania podczerwonego

39 Bibliography Figaro Engineering, Inc. –http://www.figarosensor.com/http://www.figarosensor.com/ MicroChemical Systems SA –http://www.microchemical.com/http://www.microchemical.com/ –http://www.sensors.com.cn/download/MiCS/http://www.sensors.com.cn/download/MiCS/ Cyrano Sciences, Inc. –http://cyranosciences.com/http://cyranosciences.com/

40 SnO 2 for CO Sensing Rs = Sensor resistance of displayed gases Ro = Sensor resistance in 100ppm CO

41 SnO 2 for CO Sensing Rs = Sensor resistance at 30ppm, 100ppm and 300ppm of CO at various temperatures and 50%R.H. Ro = Sensor resistance at 300ppm of CO at 25°C and 50% R.H.

42 Wilgotność

43 Photo 2. Resistive sensors are based on an interdigitated or bifilar winding. After deposition of a hydroscopic polymer coating, their resistance changes inversely with humidity. The Dunmore sensor (far right) is shown 1/3 size. Czujniki pojemnościowe Czujniki rezystancyjne

44 Wilgotność Czujniki termiczne do pomiaru wilgotności bezwzględnej

45 Czujniki punktu rosy


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