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Limiting Current Type Sensor Oxygen Sensors - SO-A0-010

Le 8 décembre 2016, 09:35 dans Humeurs 0

 

Limiting Current Type Sensor Oxygen Sensors - SO-A0-010

 

Measuring gas: Oxygen concentration
Measuring medium: Gaseous atmosphere
Measuring principle: Limiting current type sensor
Measuring ranges: 0.01 – 1.0 vol.% O2

 

 

SO-A0-010 Limiting Current Type Sensor Oxygen Sensors

 

Product Specification

 

SO-A0-010 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 0.01 to 1.0 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 “Single point calibration“ 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:  0.01 – 1.0 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 – 4.4 Volts
Power consumption:  1.3 to 1.8 Watts (depends on application and packaging)
Cold resistance:  R( 25°C ) = 3.25Ω ± 0.20Ω

 

Warm up time: Min. 30 s
Maximum permissible operating temperature: 350 °C (*)
*Depending on the cable and filter assembly (see paragraph: specification, Cable assembly)

 

Permissible volumetric flow rate (Purging the sensor)
For all sensor types, the maximum flow rate depends on the way of purging the sensor (sensor in direct gas flow, gas beam shape, etc.) and the size of the measuring chamber. Exception: SO-E1-xxx (TO8 + hose connection for direct gassing). Permissible flow
[ml/min]: 100 - 500 (optimal: 250)

 

Lifetime (MTTF): ~ 20.000 hours (*)
*Depending on measuring medium. Stated lifetime refers to a heated, operated sensor of type SO-xx-250 and SO-xx-960. A failure or reaching the lifetime typically means a slight deviation from the dispatch specifications.

 

Vibration resistance
Sensors based on the TO8 socket as well as those built with a TO39 socket (SO-Bx-xxx, SO-Ex-xxx, SO-Ax-xxx) meet the European Norm EN60068-2-6 (Sinusoidal vibration tests).

http://ameblo.jp/industrialb2b/entry-12226829670.html
http://chinawholesale.blogolink.com/billet/limiting-current-type-sensor-oxygen-sensors-so-a0-010-64918.html
http://www.industrialb2b.loxblog.com/
http://industrialb2b.bravesites.com/entries/general/limiting-current-type-sensor-oxygen-sensors-so-a0-010

 

 

 

CO-A4 Carbon Monoxide Sensor 4-Electrode

Le 30 novembre 2016, 09:18 dans Humeurs 0

 

CO-A4 Carbon Monoxide Sensor 4-Electrode

 

Temperature range :-30 to 50 ℃
Pressure range : 80 to 120 kPa
Humidity range :15 to 90 % rh continuous
Storage period : 6 months @ 3 to 20 ℃ (stored in sealed pot)
Load resistor :33 to 100 Ω (AFE circuit is recommended)
Weight : < 6g

 

 

CO-A4 Carbon Monoxide Sensor 4-Electrode

 

Product Specification

 

CO-A4 Carbon Monoxide Sensor 4-Electrode

 

PERFORMANCE
Sensitivity              nA/ppm in 2ppm CO                                           220 to 375
Response time       t90 (s) from zero to 10ppm CO                                     < 20
Zero current          nA in zero air at 20℃                                         -100 to +10
Noise*                  ±2 standard deviations (ppb equivalent)                           20
Range                   ppm limit of performance warranty 500
Linearity                ppm CO error at full scale, linear at zero, 15ppm CO    < ± 1
Overgas limit         maximum ppm for stable response to gas pulse 2000
* Tested with Alphasense AFE low noise circuit

 

LIFETIME
Zero drift             ppb equivalent change/year in lab air                        < ±100
Sensitivity drift     % change/year in lab air, monthly test                          < 10
Operating life      months until 50% original signal (24 month warranted)   > 36

 

ENVIRONMENTAL
Sensitivity @ -20℃ (% output @ -20℃/output @ 20℃) @ 5ppm CO        50 to 85
Sensitivity @ 50℃  (% output @ 50℃/output @ 20℃) @ 5ppm CO       110 to 125
Zero @ -20℃        nA change from 20℃                                                10 to 40
Zero @ 50℃         nA change from 20℃                                           -120 to -200

 

CROSS SENSITIVITY
Filter capacity       ppm·hrs H2S                                               250,000
H2S sensitivity      % measured gas @ 5ppm H2S                         < 0.1
NO2 sensitivity     % measured gas @ 5ppm NO2                          < -2
Cl2 sensitivity       % measured gas @ 5ppm Cl2                          < 0.1
NO sensitivity       % measured gas @ 5ppm NO                           < -2
SO2 sensitivity      % measured gas @ 5ppm SO2                        < 0.1
H2 sensitivity        % measured gas @ 100ppm H2  at 20℃           < 10
C2H4 sensitivity    % measured gas @ 100ppm C2H4                   < 0.5
NH3 sensitivity     % measured gas @ 20ppm NH3                       < 0.1

 

KEY SPECIFICATIONS
Temperature range   ℃                                                             -30 to 50
Pressure range          kPa                                                          80 to 120
Humidity range         % rh continuous                                          15 to 90
Storage period          months @ 3 to 20 ℃ (stored in sealed pot)              6
Load resistor            Ω (AFE circuit is recommended)                  33 to 100
Weight                    g                                                                      < 6

 

Spot-Welded Strain Sensor Fiber Optic Strain Sensor - SFO-W

Le 30 novembre 2016, 09:01 dans Humeurs 0

 

SFO-W Spot-Welded Strain Sensor Fiber Optic Strain Sensor - SFO-W

 

Immune to EMI/RFI/lightning
Intrinsically safe
Static/dynamic response
High sensitivity and resolution: 0.01% full scale
Signal transmitted over long distances
No interference due to fiber bending
Absolute measurements in engineering units
Data-acquisition compatible

 

 

SFO-W Spot-Welded Strain Sensor Fiber Optic Strain Sensor

 

Product Specification

 

SFO-W Spot-Welded Strain Sensor Fiber Optic Strain Sensor

 

The SFO-W is a fi ber optic, spot-welded strain sensor designed for civil engineering applications such as the monitoring of dams, bridges, tunnels, and other structures.

 

The SFO-W strain sensor offers small size, high accuracy, immunity to EMI/RFI, and resistance to corrosive environments with a high temperature range.

 

Key Features
Immune to EMI/RFI/lightning
Intrinsically safe
Static/dynamic response
High sensitivity and resolution: 0.01% full scale
Signal transmitted over long distances
No interference due to fiber bending
Absolute measurements in engineering units
Data-acquisition compatible

 

Applications
Steel structures
Dams
Nuclear power plants
Structural members of buildings and bridges
Tunnel supports
Corrosive environments
High EMI/RFI environments

 

Specifications
Strain range : ±1000 µε , ±1500 µε , ±2000 µε
Resolution : 0.01% of full scale
Transverse sensitivity : < 0.1% of full scale
Connector type : ST connector
Operating temperature : -55℃ to 85℃ (-67℉ to 185℉)

 

 

 

 

 

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