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 T6 - 80 °C

A A

Prawo Daltona 1 pound per square inch = 6 894.75729 pascals

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

Figaro Engineering, Inc. Chemical gas sensors LP-Gas/Propane (500-10000ppm) Natural gas/Methane (500-10000ppm) General combustible gas (500-10000ppm) Hydrogen (50-1000ppm) Carbon monoxide (50-1000ppm) Ammonia (30-300ppm) Hydrogen sulfide (5-100ppm)

How They Work

Półprzewodnikowy czujnik CO z SnO2, Firgaro 2442

Półprzewodnikowy czujnik CO z SnO2, Firgaro 2442

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

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

TGS 2442 Specifications

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)

Półprzewodnikowy czujnik metanu z SnO2, Firgaro 2611

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

Czujnik podwójny na gazy wydechowe: NO2, H2, CO

MicroChemical Systems SA Chemical gas sensors Ozone (0.01-10ppm) Nitrogen Dioxide (0.05-5ppm) Ethanol (50-1000ppm) CO / NO2 (1-400ppm/0.05-5ppm) Carbon Monoxide & HCs (1-400ppm)

MicroChemical Systems MiCS-3110 Ethanol Sensor Applications: Breathalizer: (Blood Alcohol Content) Various industrial applications Gas sensing layer Tin dioxide (SnO2)

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

MiCS-3110 Basic Measuring Circuit Run in constant voltage mode Heater voltage of VH = 2.4 V increases temperature of Rs to 430°C

MiCS-3110 Specifications

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

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

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

Cyranose® 320 Specifications

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

NoseChipTM Specifications

Elektrolityczny czujnik CO2 z elektrolitem stałym Figaro 4160

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

Czujniki oparte na pochłanianiu promieniowania podczerwonego CO, CO2, CH4 NO2 Edinburgh Instruments GasCard II pomiar steżenia CO2 zakresy od 0-500 ppm do 0-5000ppm Niepewność 2-6% niestabilność jednoroczna 2-6% w zależności od zakresu

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.

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

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

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.

                                                                              Wilgotność

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.

Wilgotność Czujniki termiczne do pomiaru wilgotności bezwzględnej

Czujniki punktu rosy