Miniature Size Hydrogen Sulfide Sensor - H2S-D4

• Range: 100 ppm H2S limit of performance warranty
• Sensitivity: 110 to 170 nA/ppm 20ppm H2S
• Response time t90: < 25 (s) from zero to 20ppm H2S
• Resolution: < 0.2 RMS noise (ppm equivalent)
• Temperature range : -30 to 50 ℃
• Pressure range : 80 to 120 kPa
• Humidity range: 15 to 90%rh (see note below)
• Weight : < 2 g

  • Model Number: H2S-D4
  • Data Sheet: Date Sheet File
Quantity:
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  • Miniature Size Hydrogen Sulfide Sensor
  • Miniature Size Hydrogen Sulfide Sensor
  • Miniature Size Hydrogen Sulfide Sensor
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Product Specification

H2S-D4 Hydrogen Sulfide Sensor (H2S Sensor) Description
Alphasense Hydrogen Sulfide gas sensors operate using well-known fuel cell technology.

H2S-D4 Hydrogen Sulfide Sensor size:
miniature, with proven long-term performance. Sensors for the next generation of 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-D4 Hydrogen Sulfide Sensor (H2S Sensor) PERFORMANCE
Sensitivity
nA/ppm 20ppm H2S
110 to 170

Response time

t90 (s) from zero to 20ppm H2S

< 25

Zero current

ppm equivalent in zero air

< ±1

Resolution

RMS noise (ppm equivalent)

< 0.2

Range

ppm H2S limit of performance warranty

100

Linearity

ppm error at full scale, linear at zero and 20ppm H2S

< ±6

Overgas limit

maximum ppm for stable response to gas pulse

200




H2S-D4 Hydrogen Sulfide Sensor (H2S Sensor) LIFETIME

Zero drift

ppm equivalent change/year in lab air

< 0.2

Sensitivity drift

% change/year in lab air, monthly test

< 3

Operating life

months until 80% original signal(24 month warranted)

> 24

 

 

 

H2S-D4 Hydrogen Sulfide Sensor (H2S Sensor) ENVIRONMENTAL

Sensitivity @ -20°C

% (output @ -20°C/output @ 20°C) @ 20ppm

75 to 90

Sensitivity @ 50°C

% (output @ 50°C/output @ 20°C) @ 20ppm

103 to 112

Zero @ -20°C

ppm equivalent change from20°C

< -0.3 to 0.2

Zero @ 50°C

ppm equivalent change from 20°C

< ±1




H2S-D4 Hydrogen Sulfide Sensor (H2S Sensor) CROSS SENSITIVITY

NO2 sensitivity

 % measured gas @ 10ppm NO2

< -25

Cl2 sensitivity

 % measured gas @ 10ppm Cl2

< -25

NO sensitivity

% measured gas @ 50ppm NO

< 12

SO2 sensitivity

% measured gas @ 20ppm SO2

< 20

CO sensitivity

% measured gas @ 400ppm CO

< 1.5

H2 sensitivity

% measured gas @ 400ppm H2

< 1

C2H4 sensitivity

% measured gas @ 400ppm C2H4

< 0.1

NH3 sensitivity

% measured gas @ 20ppm NH3

< 0.1




H2S-D4 Hydrogen Sulfide Sensor (H2S Sensor) KEY SPECIFICATIONS

Temperature range

°C

-30 to 50

Pressure range

kPa

80 to 120

Humidity range

%rh (see note below)

15 to 90

Storage period

months @ 3 to 20°C (stored in sealed pot)

6

Load resistor

Ω (recommended)

10 to 47

Weight

g

< 2


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