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H2S-B1 Hydrogen Sulfide Sensors

H2S-B1 Hydrogen Sulfide Sensors

Product catalog summary

Overview: The H2S-B1 Hydrogen Sulfide Sensor is a patented device designed to detect hydrogen sulfide (H₂S) gas. It is tested under ambient environmental conditions with a 10-ohm load resistor. Users are advised to conduct their own tests to ensure suitability for specific applications.

Performance Specifications:

Sensitivity: 300 to 440 nA/ppm in 20ppm H₂S.
Response Time: Less than 35 seconds from zero to 20ppm H₂S.
Zero Current: Less than ±0.2 ppm equivalent in zero air.
Resolution: RMS noise less than 0.1 ppm equivalent.
Range: Performance warranty limit at 200 ppm H₂S.
Linearity: Error at full scale ranges from 1 to -8 ppm.
Overgas Range: Maximum stable response to gas pulse at 500 ppm.

Lifetime:

Zero Drift: Less than 0.05 ppm equivalent change per year in lab air.
Sensitivity Drift: Less than 2% change per year in lab air, tested monthly.
Operating Life: More than 24 months until 80% of the original signal, with a 24-month warranty.

Environmental Specifications:

Temperature Sensitivity: 83 to 93% at -20°C and 102 to 110% at 50°C, compared to 20°C at 20ppm.
Zero Temperature Change: Less than ±1 ppm equivalent change from 20°C at both -20°C and 50°C.

Cross Sensitivity:

SO₂: Less than 18% at 20ppm.
NO: Less than 6% at 50ppm.
NO₂: Less than -30% at 10ppm.
Cl₂: Less than -25% at 10ppm.
H₂: Less than 1% at 400ppm.
C₂H₄: Less than 0.8% at 400ppm.
CO: Less than 4% at 400ppm.
NH₃: Less than 0.1% at 400ppm.

Key Specifications:

Temperature Range: -30 to 50°C.
Pressure Range: 80 to 120 kPa.
Humidity Range: 15 to 90% relative humidity.
Storage Period: 6 months at 3 to 20°C in a sealed pot.
Weight: Less than 13 grams.

Catalog excerpts

Figure 1 H2S-B1 Schematic Diagram > PATENTED 16.6 All dimensions in millimetres ( 0.1mm) Top ViewBottom ViewSide View PERFORMANCE SensitivitynA/ppm in 20ppm H > 2 S300 to 440Response timet > 90 (s) from zero to 20ppm H > 2 S< 35Zero currentppm equivalent in zero air< ѱ 0.2ResolutionRMS noise (ppm equivalent)< 0.1Rangeppm H > 2 S limit of performance warranty200Linearityppm error at full scale, linear at zero and 20ppm H > 2 S1 to -8Overgas rangemaximum ppm for stable response to gas pulse500 LIFETIME Zero driftppm equivalent change/year in lab air< 0.05Sensitivity drift% change/year in lab air, monthly test< 2Operating lifemonths until 80% original signal > (24 month warranted) > 24 ENVIRONMENTAL Sensitivity @ -20C% (output @ -20аC/output @ 20C) @ 20ppm83 to 93Sensitivity @ 50аC% (output @ 50C/output @ 20аC) @ 20ppm102 to 110 Zero @ -20Cppm equivalent change from 20аC< 1Zero @ 50ѰCppm equivalent change from 20C< б 1 CROSS SO > 2 sensitivity% measured gas @ 20ppmSO > 2 < 18 SENSITIVITY NOsensitivity% measured gas @ 50ppmNO< 6NO > 2 sensitivity% measured gas @ 10ppmNO > 2 < -30Cl > 2 sensitivity% measured gas @ 10ppmCl > 2 < -25H > 2 sensitivity% measured gas @ 400ppmH > 2 < 1C > 2 H > 4 sensitivity% measured gas @ 400ppmC > 2 H > 4 < 0.8COsensitivity% measured gas @ 400ppmCO< 4NH > 3 sensitivity% measured gas @ 400ppmNH > 3 < 0.1 KEY Temperature rangeC-30 to 50 SPECIFICATIONS Pressure rangekPa80 to 120Humidity range% rh15 to 90Storage periodmonths @ 3 to 20аC (stored in sealed pot)6 Weightg< 13 > NOTE: all sensors are tested at ambient environmental conditions, with 10 ohm load resistor, unless otherwise stated. As applications of use are outside our control,the information provided is given without legal responsibility. Customers should test under their own conditions, to ensure that the sensors are suitable for their ownrequirements. Alphasense Ltd, Sensor Technology House, 300 Avenue West, Skyline 120, Great Notley. CM77 7AA. UKTelephone: +44 (0) 1376 556 700 Fax: +44 (0) 137 6 335 899 E-mail: [email protected] Website: www.alphasense.com size="-4">

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