So-e2-960
Limiting current type sensor oxygen sensors
When voltage is applied to a zirconia electrolyte cell, oxygen is pumped through the zirconia disc from the cathode side to the anode side because the carriers of the current flowing through the zirconia electrolyte are oxygen ions. By attaching a cap with a pinhole on the cathode side of the cell and by increasing the voltage over the cell the current shows saturation due to the rate limiting step in the transfer of oxygen to the cathode. This saturation current is called limiting current and is nearly proportional to the ambient oxygen concentration.
Below the advantages of the oxygen sensor:
Measuring range 1.00 to 96.0 vol.% oxygen
High accuracy
For many types a more or less linear characteristic
Small temperature dependence of the sensor signal
Low interference with other gases
Long service life
In many cases â??single point calibrationâ?? necessary only once
Applications:
Medical
Laboratory
Food industry
Household/gastronomy
Measuring technique
Security technology/monitoring
(electrical-) industry
Characteristic data:
Measuring gas: oxygen concentration
Measuring medium: gaseous atmosphere
Measuring principle: limiting current type sensor
Measuring ranges: 1.00 - 96.0 vol.% o2
Response time (t90): 2 to 25 sec. (depends on: sensor type, gas flow, measuring chamber)
Sensor voltage / heating voltage / power consumption / heater cold resistance
Sensor voltage: 0, 7 to 1, 6 volt
Heating voltage: 3.6 â?? 4.4 volts
Power consumption: 1.3 to 1.8 watts (depends on application and packaging)
Cold resistance: r( 25'c ) = 3.25 ohm â± 0.20 ohm
Warm up time: min. 30 s
Cozir ambient sensor
Ultra low power carbon dioxide sensor
Cozir is an ultra low power (3.5mw4), high performance co2 sensor, ideally suited for battery operation, portable instruments and hvac.Based on gss ir led and detector technology, and innovative optical designs, the cozir offers the lowest power ndir sensor available.Optional temperature, humidity and light sensing are available.Cozir is a third generation product from gss - leaders in ir led co2 sensing.
With measurement ranges of 0-2000ppm, 0-5000ppm and 0-1% the cozir ambient sensor is suitable for applications such as building control and horticulture.
* ultra-low power 3.5mw
* measurement ranges from 0 to 1%
* low noise measurement
Sprintir is a high speed (20 hz) co2 sensor, ideally suited for applications which require capture of rapidly changing co2 concentrations including metabolic assessment and analytical instrumentation.
* high speed sensing (20hz)
* measurement ranges from 0 to 100%
* 3.3v supply
* low power requirement 35mw
* flow through adaptor (optional)
Features:
* high selectivity to co2
* compact size
* low dependency on humidity
* long life and low cost
* low power consumption
Applications:
* indoor air quality control
* co2 monitors
Tgs4161 is a new solid electrolyte co2 sensor which offers miniaturization and low power consumption. A range of 350~10, 000ppm of carbon dioxide can be detected by tgs4161, making it ideal for indoor air control applications.
The co2 sensitive element consists of a solid electrolyte formed between two electrodes, together with a printed heater (ruo2 ) substrate. By monitoring the change in electromotive force (emf) generated between the two electrodes, it is possible to measure co2 gas concentration.
The top of the sensor cap contains adsorbent (zeolite) for the purpose of reducing the influence of interference gases.
Tgs4161 exhibits a linear relationship between â??emf and co2 gas concentration on a logarithmic scale. The sensor displays good long term stability and shows excellent durability against the effects of high humidity.
The luminox family is a range of factory calibrated optical sensors which measure ambient o2 levels using the principle of fluorescence quenching by oxygen.
Our unique patented process allows us to produce an oxygen sensor that benefits from low power, traditionally associated with electrochemical sensing devices, while providing a much longer lifetime due to the non-depleting sensing principle.
* low drift
* rohs compliant
* extended temperature range compared to electrochemical sensing devices
* low in cost
* factory calibrated
* measures temperature and pressure (if selected)
* small and compact
* maintenance free
Luminox unlike other sensor technologies is stable and robust, it is rohs compliant as it does not contain lead or any other hazardous materials and has negligible cross sensitivity.
Luminox can be purchased as a single optical sensor, or as part as an evaluation kit which includes the luminox sensor evaluation interface board, which was designed to allow customers to easily evaluate the sensor with minimum effort or design work.
Typical applications for the luminox optical oxygen sensor are;
* oxygen detection
* portable equipment
* breathing apparatus
* inerting
* medical
* lab equipment
* agriculture
* incubation
* fore prevention
* flue gas in condensing boilers
Part numbering system
Lox - xx
01: measures 0-300 mbar ppo 2 and temperature (â°c)
02: measures 0-300 mbar ppo 2 , 0-25% o 2 , temperature (â°c) and 500-1200mbar barometric pressure
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3sp_no2_20 p 15x15 no2 sensor 20 ppm p package 110-501
Benefits
* small size with low profile (20x20x3 mm)
* long life (10 years expected life)
* fast response (< 15 seconds)
* low power consumption
* individually calibrated (nist traceable)
* rohs compliant
Applications
* air quality monitoring
* industrial safety
* air purification control
Description
Spec's printed sensors offer the performance of the best quality electrochemical sensors at a fraction of the price. Spec's printed sensors are also ultra-thin, offering easy integration into wireless, portable, and networked solutions. These sensors are ideal for health, environmental, industrial and residential monitoring, because of their high performance, low cost and small size.
3sp_o3_20 p 15x15 o3 sensor 20 ppm p package 110-401
Benefits
* small size with low profile (20x20x3 mm)
* long life (10 years expected life)
* fast response (< 15 seconds)
* low power consumption
* individually calibrated (nist traceable)
* rohs compliant
Applications
* air quality monitoring
* industrial safety
* air purification control
Description
Spec's printed sensors offer the performance of the best quality electrochemical sensors at a fraction of the price. Spec's printed sensors are also ultra-thin, offering easy integration into wireless, portable, and networked solutions. These sensors are ideal for health, environmental, industrial and residential monitoring, because of their high performance, low cost and small size.
Minir is an ultra low power (3.5mw4 ), high performance co2 sensor, ideally suited for battery operation and portable instruments. Based on patented ir led and detector technology and innovative optical designs, minir is a third generation product from gas sensing solutions ltd - leaders in ir led co2 sensing.
* ultra-low power 3.5mw
* measurement ranges from 0 to 100%
* 3.3v supply.
* peak current only 33ma.
* compact 20mm diameter package
Cozir lp is a low profile, low power, high performance co2 sensor. Operating at a 2hz update rate while only consuming 3mw5 , its world leading power consumption make it ideally suited for battery operation and portable instruments. Based on proven gss ir led and detector technology and innovative optical designs. Cozir lp is a third generation product from gas sensing solutions ltd - leaders in ir led co2 sensing.
With measurement ranges of 0-2000ppm, 0-5000ppm and 0-1% the cozir lp sensor is suitable for applications such as building control and indoor air quality.
* ultra-low power 3mw
* measurement ranges from 0 to 1%
* 3.3v supply
* peak current only 33ma
* commands set and electrical interface compatible with gss cozir sensor range
Performance
Output î¼a @ 20.9% o2 80 to 120
Response time t90 (s) from 20.9% to 0% o2 < 15
Zero current î¼a in n2 < 2.5
Linearity % o2 deviation @ 10% o2 0.6
Lifetime
Output drift % change in output @ 3 months < 1
Operating life months until 85% original output of 20.9% o2 > 24
Environmental
Humidity sensitivity % o2 change: 0% to 95% rh @ 40â?? < 0.7
Co sensitivity % (change o2 reading) / % co2 @ 5% co2 0.1
Pressure sensitivity (% change of output)/(% change of pressure) @ 20kpa < 0.1
Features
* Battery operable
* High repeatability/selectivity to CO
* Linear relationship between CO gas concentration and sensor output
* Simple calibration
* Long life
* UL recognized component
* Meets UL2034, EN50291, and RoHS requirements
Applications
* Residential and commercial CO detectors
* CO monitors for industrial applications
* Ventilation control for indoor parking garages
* Recreational vehicle CO detectors
* Marine CO detectors
* Fire detection
Figaro's TGS5042 is a battery operable electrochemical sensor which offer several advantages over traditional electrochemical sensors. Its electrolyte is environmentally friendly, it poses no risk of electrolyte leakage, can detect concentrations as high as 1% CO, operates in a range from -40Ë? and +70Ë?C, and it has lower sensitivity to interferant gases. With a long life, good long term stability, and high accuracy, this sensor is the ideal choice for CO detectors with digital display. OEM customers will find individual sensors data printed on each sensor in bar code from, enabling users to skip the costly gas calibration process and allowing for individual sensor tracking. TGS5042 utilizes a standard AA battery-sized package.
Specifications
Model number: TGS5042-A00 (pin version)
TGS5042-B00 (ribbon version)
Target gases: Carbon monoxide
Typical detection range: 0 ~ 10,000ppm
Output current in CO: 1.2~2.4nA/ppm
Baseline offset:
Features:
* Long life
* Virtually no in�uence from CO2
* No external power supply required for sensor operation
* No warmup time is required
Applications:
* Water quality control
The GS Yuasa Dissolved Oxygen Sensor KDS-25B is a unique galvanic cell type sensor which was developed for water quality control. Its most notable features are long life expectancy and it is not influenced by CO2.
Specification:
Measurement range: 0~80mg/L dissolved oxygen
Accuracy in water at 25'C±1'C: ±5% (full scale)
Operating conditions
Atmospheric pressure: 81~203kPa (corresponds to 10m of water depth)
Temperature: 5~35'C
Relative humidity: 10 ~ 90%R.H. (no condensation)
Thermal time constant: 10 min. or less
Initial output voltage in clean air under standard test conditions: 8.0~15.0mV
Standard test conditions
Atmospheric pressure: 1013±5hPa
Temperature: 25'C±1'C
Relative humidity: 60±5%
1.Features
Gallium Nitride Based Material
Schottky-type Photodiode
Photovoltaic Mode Operation
Good Visible Blindness
High Responsivity & Low Dark Current
2.Applications
UV Index Monitoring
UV-A Lamp Monitoring
UVA-only SiC based UV photodiode A = 0.06 mm
Model Number: SG01SA18
1.Properties of the SG01SA18 UV photodiode
* UVA-only sensitivity, PTB reported high chip stability
* Active Area A = 0,06 mm2
* TO18 hermetically sealed metal housing, 1 isolated pin and 1 case pin
* 10mW/cm2 peak radiation results a current of approx. 222 nA
2.About the material Silicon Carbide (SiC)
SiC provides the unique property of extreme radiation hardness, near-perfect visible blindness, low dark current, high speed and low noise. These features make SiC the best available material for visible blind semiconductor UV de-tectors. The SiC detectors can be permanently operated at up to 170'C (338'F). The temperature coefficient of signal (responsivity) is also low, < 0.1%/K. Because of the low noise (dark current in the fA range), very low UV radiation intensities can be measured reliably
3.Options
SiC photodiodes are available with seven different active chip areas from 0.06 mm2 up to 36 mm2. Standard version is broadband UVA-UVB-UVC. Four filtered versions lead to a tighter sensitivity range. All photodiodes have a hermeti-cally sealed metal housing (TO type), either a 5.5 mm diameter TO18 housing or a 9.2 mm TO5 housing. Further op-tion is either a 2 pin header (1 isolated, 1 grounded) or a 3 pin header (2 isolated, 1 grounded).
Features:
* Virtually no influence from CO2, CO, H2S, NO, H2
* Temperature compensation circuit included
* Good linearity
* No position dependency
* Stable output signal
* No external power supply required for sensor operation
* No warmup time is required
Applications:
* Safety - Air conditioners, oxygen detectors, fire detectors, fuel cell systems
* Measurement - Oxygen monitors in flue gas
* Biotechnology - Oxygen incubators, anaerobic cultivators
* Food industry - Refrigeration, greenhouses
The Figaro Oxygen Sensor SK-25F is a unique galvanic cell type oxygen sensor. Its most notable features are no influence from CO2, good linearity up to 30% oxygen, and excellent chemical durability. This feature makes the sensor ideal for oxygen monitoring in various applications such as the biochemical field, food industry, and domestic safety applications.
Specification:
Measurement range: 0~30% O2
Accuracy: ±1% full scale
Operating conditions
Atmospheric pressure: 1013hPa ± 20%
Temperature: -10~50'C
Relative humidity: 0~99%RH (no condensation)
Response time (90%): â?¤ 15 seconds
Initial output voltage under factory test conditions: 5.5~8.5mV
Fcatory test conditions
Atmospheric pressure: 1013hPa
Temperature: 25±5'C
Life expectancy at 20'C in normal air: approx. 3 years
Miniature 30 bar Pressure Sensor Module MS5541-30C
0-30 bar absolute pressure range
16 Bit ADC
10 - 1100 mbar absolute pressure range
6 coefficients for software compensation stored on-chip
Piezoresistive silicon micromachined sensor
Integrated miniature pressure sensor 6.2 x 6.4 mm
16 Bit ADC
3-wire serial interface
1 system clock line (32.768 kHz)
Low voltage and low power consumption
Description:
The MS5540C is a SMD-hybrid device including a precision piezoresistive pressure sensor and an ADC Interface IC. It is a miniature version of the MS5534C barometer/altimeter module and provides a 16-bit data word from a pressure and temperature dependent voltage. MS5540C is a low power, low voltage device with automatic power down (ON/OFF) switching. A 3-wire interface is used for all communications with a microcontroller. Compared to MS5534A the pressure range (measurement down to 10 mbar) has been improved. The MS5540C is fully software compatible to the MS5534C and previous versions of MS5540. In addition, the MS5540C is from its outer dimensions compatible to the MS54XX series of pressure sensors. Compared to the previous version, the ESD sensitivity level has been improved to 4kV on all pins. The gel protection of the sensor provides a water protection sufficient for 100 m waterproof watches without any additional protection.
Features:
Integrated pressure sensor
Small size 6.2 x 6.4 mm
Pressure range 10-1100 mbar
Resolution 0.1 mbar
16 Bit ADC
6 coefficients for a software compensation stored on-chip
3-wire serial interface
1 system clock line (32.768 kHz)
Temperature range -40 ~ +85'C
Low voltage (2.2 to 3.6V)
Low power (Standby current:0.1uA)
Pb-free and RoHS-compatible
No external components required
Based on the rugged HS1101LF capacitive humidity sensor, HM1520LF is a dedicated humidity transducer designed for measurements at low humidity. Direct measurement of dew point or water concentration can be easily obtained in really cost effective conditions. Direct interface with a micro-controller is made possible with the moduleâ??s linear voltage output.
Main Features
* Tubular form for through wall mounting
* Not affected by water condensation
* Full interchangeability
* Typical 1 to 1.6 Volt DC output for 0 to 20% RH at 5 V DC supply
* Calibrated, linear voltage for easy electronic interface
* Controlled temperature dependency
* Ratiometric to voltage supply
Humidity Sensor Specfic Features
* No affected by long period at low humidity values.
* Patented solid polymer structure.
* High resistance to chemicals.
* Fast response time.
FOT-M Temperature sensor Fiber Optic Temperature sensor
The FOT-M is a fiber optic temperature sensor specifi cally designed for med-ical applications. The FOT-M temperature sensor combines all the desired characteristics you would expect from the ideal sensor. Its compact size, immunity to microwave and RF, resistance to corrosion, high accuracy and reliability make it the best choice for temperature measurements in harsh environments.
FISO's FOT-M fiber optic temperature sensor features complete immunity to EMI and RFI, built-in safety for medical applications, and high accuracy for temperature measurement. The FOT-M temperature sensor provides the medical industry with higher fi delity temperature measurements for demanding applications, like MRI applications.
Key Features
Intrinsically safe
Immune to EMI/RFI
Up to 85'C (180'F)
Accuracy of ±0.3'C
Miniature and rugged sensor
Fast response time
Applications
Medical applications
Industrial environments
Harsh and hazardous environments
MRI environment
Immune to microwaves and RF
Specifications
Temperature range: 20'C to 85'C (68'F to 185'F)
Resolution (*1): 0.1'C
Accuracy: ±0.3'C
Response time: Less than 750 ms
Connector type: ST connector
*1. Signal conditioner dependent
The gs oxygen sensor ke series (ke-25 and ke-50) is a unique galvanic cell type oxygen sensor which was developed in japan in 1985. Its most notable features are long life expectency, excellent chemical durability, and it is not influenced by co 2 . The ke series oxygen sensor is ideal to meet the ever-increasing demand for oxygen monitoring in various fields such as combustion gas monitoring, the biochemical field, medical applications, domestic combustion appliances, etc.
Features:
* long life
Ke-25 - 5 years / ke-50 - 10 years in ambient air
* virtually no influence from co2 , co, h2s, nox, h2
* low cost
* operates in normal ambient temperatures
* stable output signal
* no external power supply required for sensor operation
* no warmup time is required
Applications:
* medical - anesthetic instruments, respirators, oxygen-enrichers
* biotechnology - oxygen incubators
* food industry - refrigeration, greenhouses
* safety - air conditioners, oxygen detectors, fire detectors
Features
* oxygen pressure range 2 mbar - 3bar
* zirconium dioxide (zro2) sensing elements
* non-consumption technology
* integral heating element
* no need for temperature stabilisation
* no reference gas required
* high accuracy
* linear output signal
* operates with external interface boards
* m18x1.5 screw mount
Specifications
Heater voltage* 4.35v dc +/- 0.1v dc (1.85a)
Stand by 2v dc (0.85a)
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