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Company Info
Shenzhen Isweek Ltd Shenzhen Isweek Ltd

Street Address: 16 Floor, Building #3, Zhongke Mansion, Gaoxin South 1st Rd, Hi-Tech Park, Nanshan

City: Shenzhen

Province: Guangdong

Country/Region: China

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Hydrogen Sulfide Sensor (H2S Sensor)

Hydrogen Sulfide Sensor (H2S Sensor)

Application:  \

Market Type:  After Market

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H2S-A1 Hydrogen Sulfide Sensor H2S Sensor Description
Alphasense Hydrogen Sulfide gas sensors operate using well-known fuel cell technology.

H2S-A1 Hydrogen Sulfide Sensor size:
20mm diameter, the industry standard size for portable gas detectors

With very high sensitivity and low zero, accurate and stable readings are possible when measuring current concentration ranges from ppb to 1% H2S.
 

H2S-A1 Hydrogen Sulfide Sensor H2S Sensor Schematic Diagram

 

 

H2S-A1 Hydrogen Sulfide Sensor H2S Sensor PERFORMANCE
Sensitivity nA/ppm in 20ppm H2S 550 to 875
Response time t90 (s) from zero to 20ppm H2S < 35
Zero current ppm equivalent in zero air < ± 0.4
Resolution RMS noise (ppm equivalent) < 0.05
Range ppm H2S limit of performance warranty 100
Linearity ppm error at full scale, linear at zero and 20ppm H2S 0 to -4
Overgas limit maximum ppm for stable response to gas pulse 500
     
H2S-A1 Hydrogen Sulfide Sensor H2S Sensor LIFETIME
Zero drift ppm equivalent change/year in lab air < 0.1
Sensitivity drift % change/year in lab air, monthly test < 3
Operating life months until 80% original signal (24 month warranted) > 24
     
H2S-A1 Hydrogen Sulfide Sensor  H2S Sensor ENVIRONMENTAL
Sensitivity @ -20°C % (output @ -20°C/output @ 20°C) @ 20ppm 80 to 92
Sensitivity @ 50°C % (output @ 50°C/output @ 20°C) @ 20ppm 100 to 110
Zero @ -20°C ppm equivalent change from 20°C < ± 0.5
Zero @ 50°C ppm equivalent change from 20°C < ± 0.7
     
H2S-A1 Hydrogen Sulfide Sensor H2S Sensor CROSS  SENSITIVITY
NO2 sensitivity % measured gas @ 10ppm NO2 < -20
Cl2    sensitivity % measured gas @ 10ppm Cl2 < -25
NO    sensitivity % measured gas @ 50ppm NO < 4
SO2  sensitivity % measured gas @ 20ppm SO2 < 10
CO    sensitivity % measured gas @ 400ppm CO < 1.5
H2     sensitivity % measured gas @ 400ppm H2 < 0.2
C2H4 sensitivity % measured gas @ 400ppm C2H4 < 0.5
NH3   sensitivity % measured gas @ 20ppm NH3 < 0.1
     
H2S-A1 Hydrogen Sulfide Sensor H2S 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 (recommended) 10 to 47
Weight g < 6

 


Matched Transmitter board for H2S-A1 H2S Sensor

4-20 mA 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

Hydrogen Sulfide Sensor (H2S Sensor)
 

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