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100 Ppm Zetron Sulfur Dioxide Sensor SO2 Sensor 4-Electrode SO2-B4 Lightweight

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100 Ppm Zetron Sulfur Dioxide Sensor SO2 Sensor 4-Electrode SO2-B4 Lightweight

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Brand Name :	Alphasense
Model Number :	SO2 Sensor
Certification :	CE
Payment Terms :	L/C, D/A, D/P, T/T

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100 Ppm Zetron Sulfur Dioxide Sensor SO2 Sensor 4-Electrode SO2-B4 Lightweight

Alphasense Sulfur Dioxide gas sensors operate using proven fuel cell technology.
Sensors are available in the following sizes:
A: 20mm diameter, the industry standard size for portable gas detectors
B: 32mm diameter package, the best choice for fixed site applications
D: miniature, with proven long-term performance. Sensors designed for the next generation of portable gas detectors.
The SO2 range provides OEMs with reliable sensors for use in a variety of applications. Strong signal levels combined with low zero current allows resolution below 1ppm and an operating range for safety applications up to 2,000ppm. The sensors are designed for use in both fixed site and portable instrumentation.
The SO2 sensors offer our electrolyte leak-free guarantee and reliable long-term detection performance. The leakproof housing is moulded with a colour coded top for ease of identification.

SO2-B4 Sulfur Dioxide Sensor SO2 Sensor PERFORMANCE
Sensitivity	nA/ppm at 2ppm SO2	275 to 475
Response time	t90 (s) from zero to 2ppm SO2	< 30
Zero current	nA in zero air at 20℃
Noise*	±2 standard deviations (ppb equivalent)	5
Range	ppm limit of performance warranty	100
Linearity	ppb error at 100ppm SO2, linear at zero and 10ppm SO2	0 to -2
Overgas limit	maximum ppm for stable response to gas pulse	200
* Tested with Alphasense ISB low noise circuit

SO2-B4 Sulfur Dioxide Sensor SO2 Sensor LIFETIME
Zero drift	ppb equivalent change/year in lab air	< ±20
Sensitivity drift	% change/year in lab air, monthly test	< ±15
Operating life	months until 50% original signal (24 month warranted)	> 36

SO2-B4 Sulfur Dioxide Sensor SO2 Sensor ENVIRONMENTAL
Sensitivity @ -20℃	(% output @ -20℃/output @ 20℃) @ 2ppm SO2	70 to 82
Sensitivity @ 50℃	(% output @ 50℃/output @ 20℃) @ 2ppm SO2	95 to 110
Zero @ -20℃	nA change from 20℃	0 to -10
Zero @ 50℃	nA change from 20℃	10 to 30

SO2-B4 Sulfur Dioxide Sensor SO2 Sensor CROSS SENSITIVITY
Filter capacity	ppm·hrs	450
H2S	sensitivity % measured gas @ 5ppm H2S	< 2
NO2	sensitivity % measured gas @ 5ppm NO2	< -160
Cl2	sensitivity % measured gas @ 5ppm Cl2	< -40
NO	sensitivity % measured gas @ 5ppm NO	< -2
CO	sensitivity % measured gas @ 5ppm CO	< 2
H2	sensitivity % measured gas @ 100ppm H2	< 0.5
C2H4	sensitivity % measured gas @ 100ppm C2H4	< 1
NH3	sensitivity % measured gas @ 20ppm NH3	< 0.1
CO2	sensitivity % measured gas @ 5% CO2	< 0.1

SO2-B4 Sulfur Dioxide Sensor SO2 Sensor KEY SPECIFICATIONS
Temperature range	℃	-30 to 50
Pressure range	kPa	80 to 120
Humidity range	% rh continuous (see note below)	15 to 90
Storage period	months @ 3 to 20°C (stored in sealed pot)	6
Load Resistor	Ω (ISB circuit is recommended)	33 to 100
Weight	g	< 13

Matched Transmitter board for SO2-B4 SO2 Sensor

Individual Sensor Board (ISB) Alphasense B4 4-Electrode Gas Sensors
The Individual Sensor Board (ISB) is designed for use with the Alphasense B4 family of four-electrode gas sensors. This potentiostat provides a dual channel voltage output.
A low noise bandgap provides the bias voltage for NO sensors and the ISB can measure both oxidising (CO, H2S, SO2 and NO) and reducing (O3 and NO2) gases.
The ISB is configured for specific sensors: NO, NO2, O3 and CO / H2S / SO2 .
Designed for low power applications, the ISB requires 3.5 to 6.4 stable DC supply at only 1mA.

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