• High Concentration Sulfur Dioxide Sensor (SO2 Sensor)
  • High Concentration Sulfur Dioxide Sensor (SO2 Sensor)
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High Concentration Sulfur Dioxide Sensor (SO2 Sensor)

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  • Price

    Price on request   ≥1piece

  • Model Number

    SO2-AE

  • Data Sheet

  • Package

    Original packaging

  • Specs

    SO2-AE

  • Quantity

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Product Description

SO2-AE Sulfur Dioxide Sensor SO2 Sensor Description
Alphasense Sulfur Dioxide gas sensors operate using proven fuel cell technology.

SO2-AE Sulfur Dioxide Sensor sizes:
20mm diameter, the industry standard size for 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-AE Sulfur Dioxide Sensor SO2 Sensor PERFORMANCE
Sensitivity
 nA/ppm in 400ppm SO2
 55 to 80
Response time
 t90 (s) from zero to 400ppm SO2
 < 30
Zero current
 ppm equivalent in zero air
 < ±5
Resolution
 RMS noise (ppm equivalent)  
 < 1.5
Range
 ppm limit of performance warranty
 2,000
Linearity
 ppm error at full scale, linear at zero and 400ppm
 0 to -80
Overgas limit
 maximum ppm for stable response to gas pulse
 10,000



SO2-AE Sulfur Dioxide Sensor SO2 Sensor LIFETIME
Zero drift
 ppm equivalent change/year in lab air
 < 0.2
Sensitivity drift
 % change/year in lab air, monthly test
 < 4
Operating life
 months until 80% original signal  (24 month warranted)
 > 24



SO2-AE Sulfur Dioxide Sensor SO2 Sensor ENVIRONMENTAL
Sensitivity @ -20°C
 % (output @ -20°C/output @ 20°C) 400ppm
 80 to 92
Sensitivity @ 50°C
 % (output @ 50°C/output @ 20°C) 400ppm
 98 to 108
Zero @ -20°C
 ppm equivalent change from 20°C
 < ±3
Zero @ 50°C
 ppm equivalent change from 20°C
 < ±4



SO2-AE Sulfur Dioxide Sensor SO2 Sensor CROSS SENSITIVITY
Filter capacity
 ppm·hrs H2S
 < 5,000
H2S   sensitivity
 % measured gas @ 20ppm H2S
 < 2
NO2   sensitivity
 % measured gas @ 10ppm NO2
 < -200
Cl2     sensitivity
 % measured gas @ 10ppm Cl2
 < -60
NO     sensitivity
 % measured gas @ 500ppm NO
 < 25
CO     sensitivity
 % measured gas @ 400ppm CO
 < 10
H2     sensitivity
 % measured gas @ 400ppm H2
 < 1.5 
C2H4 sensitivity
 % measured gas @ 1000ppm C2H4
 < 40
NH3   sensitivity
 % measured gas @ 20ppm NH3
 < 0.1



SO2-AE Sulfur Dioxide Sensor SO2 Sensor KEY SPECIFICATIONS
Temperature range
 °C
 -30 to 50
Pressure range 
 kPa 
 80 to 120
Humidity range
 % rh continuous
 15 to 90
Storage period
 months @ 3 to 20°C (stored in sealed pot)
 6
Load Resistor
 Ω (recommended)
 10 to 47
Weight
 g
 < 6

Matched Transmitter board for SO2-AE SO2 Sensor

4-20mA Digital Transmitter Board
   • Factory calibration, custom-set for immediate use
   • Digital zero, sensitivity and temperature compensation
   • Digital and 4-20mA output
   • Biased or unbiased operation
   • Calibration and range change