S4-H2S

High precision and long life 

Fast response speed, fast return to zero 

Low power consumption, high sensitivity

Wide linear range, strong anti-interference ability 

Excellent repeatability and stability

Strong anti-interference ability

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Product Overview

The S4-H2S hydrogen sulfide gas detection sensor is a constant-potential electrolytic sensor. Hydrogen sulfide and oxygen undergo corresponding redox reactions on the working electrode and the counter electrode, respectively, and release charges to form a current. The generated current is proportional to the concentration of hydrogen sulfide. The hydrogen sulfide concentration can be determined by testing the current.

Application Field

  • Hydrogen sulfide alarm
  • Industrial site hydrogen sulfide gas detection
  • Mine hydrogen sulfide detection
  • Hydrogen sulfide detection in atmospheric environment

Product Characteristics

  • High precision and long life 
  • Fast response speed, fast return to zero 
  • Low power consumption, high sensitivity
  • Wide linear range, strong anti-interference ability 
  • Excellent repeatability and stability
  • Strong anti-interference ability

Specification

Technical parameters

Item Parameter
model S4-H2S
Detection principle Electrochemical Three electrodes
Detection gas H2S
Detection range 0-100PPM
Maximum load concentration 500PPM
Zero drift ±2PPM
Resolution 1PPM
Response time <30s
Bias voltage 0
Load resistance 5~30Ω
Load resistance -30℃-50℃
Load resistance 15%RH to 90%RH(no condensation)
Repeatability <±1% output signal
  Long-term stability <2% signal/month
Linearity Linearity,regression coefficient R²=0.999
Work pressure 90 to 110 kPa
Shelf life 12 months after delivery
Service life 3 years

Sensor size chart

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