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

Prezentacja na temat: "Zabezpieczenia: o-olejowe p-nadciśnieniowe q-piaskowe d-szczelne e-zwiększonego bezp. I-samoistnie bezpieczne Grupy wybuchowości: I- metan,"— 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 = 6  pascals

11 Solid-State Chemical Sensors
Metal-oxide semiconductor layer Usually tin dioxide (SnO2) 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 SnO2, Firgaro 2442

15 Półprzewodnikowy czujnik CO z SnO2, Firgaro 2442

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: Gas sensing layer
CO detectors Air quality controllers Indoor parking lot ventilation Gas sensing layer Tin dioxide (SnO2)

20 Półprzewodnikowy czujnik metanu z SnO2, Firgaro 2611

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

22 Czujnik podwójny na gazy wydechowe: NO2, H2, CO

23 MicroChemical Systems SA
Chemical gas sensors Ozone ( ppm) Nitrogen Dioxide (0.05-5ppm) Ethanol ( ppm) CO / NO2 (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 (SnO2)

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 VH = 2.4 V increases temperature of Rs to 430°C

27 MiCS Specifications

28 SnO2 for Ethanol Sensing
RS = Sensor resistance to C2H5OH R10ppm = Sensor resistance resistance in 10 ppm of C2H5OH

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. NoseChipTM
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 NoseChipTM Specifications

34 Elektrolityczny czujnik CO2 z elektrolitem stałym Figaro 4160

35 Elektrolityczny czujnik O2 (450 zł) żywotność 5 do 10 lat

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37 Czujniki oparte na pochłanianiu promieniowania podczerwonego
CO, CO2, CH4 NO2 Edinburgh Instruments GasCard II pomiar steżenia CO2 zakresy od ppm do ppm Niepewność 2-6% niestabilność jednoroczna 2-6% w zależności od zakresu

38 Czujniki oparte na pochłanianiu promieniowania podczerwonego
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.

39 Bibliography Figaro Engineering, Inc. MicroChemical Systems SA
MicroChemical Systems SA Cyrano Sciences, Inc.

40 SnO2 for CO Sensing Rs = Sensor resistance of displayed gases
Ro = Sensor resistance in 100ppm CO

41 SnO2 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 Wilgotność Czujniki pojemnościowe Czujniki rezystancyjne
                                                           Czujniki rezystancyjne                                                        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.

44 Wilgotność Czujniki termiczne do pomiaru wilgotności bezwzględnej

45 Czujniki punktu rosy