Language: English
China suppliers
Sign in|Join Now Home > Week technology ltd > Products > SOH-A2 Sulfur Dioxide + Hydrogen Sulfide Sensor (SO2 + H2S Sensor)
Week technology ltd
Product Details
SOH-A2 Sulfur Dioxide + Hydrogen Sulfide Sensor (SO2 + H2S Sensor)
Category:Electronic Components & Supplies/Active Components/Sensors
Spec:
Packing:
Usage:
More Details

SOH-A2 Sulfur Dioxide + Hydrogen Sulfide Sensor Introduction
Personal gas safety monitors can be found in almost every industry, with the requirement for multiple gas detection becoming commonplace. 

Sulfur gases are toxic with a complex chemistry. Measuring both SO2 and H2S provides the information for separating the corrosive gases, but with different toxicologies.

2Sense Dual Gas
Save space and save cost with our 2Sense family of dual gas sensors, in the A-series 20mm size.
With a patented design and best response, these dual sensors offer the required performance with obvious advantages.

SO2 / H2S the SOH-A2 measures the two critical Sulfur gases together within one sensor body and using a software algorithm, separates the two gases for clear discrimination.

 

Sulfur Dioxide (SO2) Sensor Specification

Sulfur Dioxide Sensor PERFORMANCE
Sensitivity nA/ppm in 10ppm SO2 140 to 250
Response time t90 (s) from zero to 10ppm SO2 < 15
Zero current ppm equivalent in zero air < ± 0.2
Resolution rms noise (ppm equivalent) < 0.2
Range ppm SO2 limit of performance warranty 20
Linearity ppm error at full scale, linear at zero and 10 ppm SO2 < ±2
Overgas limit ppm maximum SO2 for stable response to gas pulse 50
     
Sulfur Dioxide Sensor LIFETIME
Zero drift ppm equivalent change/year in lab air < 0.5
Sensitivity drift % change/year in lab air, monthly test < 6
Operating life months until 80% original signal (24 month warranted) 24
     
Sulfur Dioxide Sensor ENVIRONMENTAL
Sensitivity @ -20℃ % (output @ -20℃/output @ 20℃) @ 10ppm SO2 90 to 100
Sensitivity @ 50℃ % (output @ 50℃/output @ 20℃) @ 10ppm SO2 80 to 100
Zero @ -20℃ ppm equivalent change from 20℃ -0.2 to 0.2
Zero @ 50℃ ppm equivalent change from 20℃ 0.2 to 0.8
     
Sulfur Dioxide Sensor CROSS SENSITIVITY 
Filter capacity ppm hours of Hydrogen Sulfide nd
H2S  sensitivity % measured gas @ 20ppm H2S  < 15
NO2  sensitivity % measured gas @ 10ppm NO2 < -150
Cl2    sensitivity % measured gas @ 10ppm Cl2 < -50
NO    sensitivity % measured gas @ 50ppm NO < 50
CO     sensitivity % measured gas @ 400ppm CO < 1
H2     sensitivity % measured gas @ 400ppm H2  @ 20℃ < 1
C2H4 sensitivity % measured gas @ 400ppm C2H4 < 40
NH3   sensitivity % measured gas @ 20ppm NH3 < 1
     
Sulfur Dioxide Sensor KEY SPECIFICATIONS
Temperature range ℃  -30 to 50
Pressure range kPa  80 to 120
Humidity range %rh continuous (see note below) 15 to 90
Storage period months @ 3 to 20℃ (stored in sealed pot) 6
Load resistor Ω (recommended) 10 to 47
Weight g < 6

 

Hydrogen Sulfide (H2S) Sensor Specification

Hydrogen Sulfide Sensor PERFORMANCE
Sensitivity nA/ppm in 20ppm H2S 450 to 900
Response time t90 (s) from zero to 20ppm H2S @ 20℃ < 25
Zero current ppm equivalent in zero air ± 0.25
Resolution rms noise (ppm equivalent) < 0.1
Range ppm H2S limit of performance warranty 100
Linearity ppm error at full scale, linear at zero and 20ppm H2S < ±5
Overgas limit maximum ppm H2S for stable response to gas pulse 200
     
Hydrogen Sulfide Sensor LIFETIME
Zero drift ppm equivalent change/year in lab air < 0.1
Sensitivity drift % change/year in lab air, monthly test < 2
Operating life months until 80% original signal ( 24 month warranted) 24
     
Hydrogen Sulfide Sensor ENVIRONMENTAL
Sensitivity @ -20℃ % (output @ -20℃/output @ 20℃) @ 20ppm H2S 75 to 90
Sensitivity @ 50℃ % (output @ 50℃ /output @ 20℃) @ 20ppm H2S 100 to 110
Zero @ -20℃ ppm equivalent change from 20℃ ±0.2
Zero @ 50℃ ppm equivalent change from 20℃ ±0.2
     
Hydrogen Sulfide Sensor CROSS SENSITIVITY
Filter  capacity ppm.hrs of SO2  nd
NO2   sensitivity % measured gas @ 10ppm NO2 < -25
Cl2     sensitivity % measured gas @ 10ppm Cl2 < -20
NO     sensitivity % measured gas @ 50ppm NO < 15
SO2   sensitivity % measured gas @ 10ppm SO2  < 30
CO     sensitivity % measured gas @ 400ppm CO < 1.5
H2     sensitivity % measured gas @ 400ppm H2 < 0.2
C2H4 sensitivity % measured gas @ 400ppm C2H4 < 0.2
NH3   sensitivity % measured gas @ 20ppm NH3 < ±0.5

 

Basic Product Details
  • Production Capacity:3000 Piece/Pieces per Month
  • Delivery Time:5~7 work days
  • Min.Order Quantity:1   Piece/Pieces
  • Port:HK
  • Payment Terms:T/T
  • Main Markets:
Contact Information
  • Company Name:Week technology ltd
  • Contact Person:Ms Lieen li
  • Telephone:0086-755-83289069
  • Fax:0086-755-83289052
  • Email:lixiaoling@isweek.com
  • Website:www.isweek.com
  • Country/Territory:China
  • Address:16 Floor, Building #3, Zhongke Mansion, Gaoxin South 1st Rd, Hi-Tech Park, Nanshan, Shenzhen, Guangdong, China (Mainland)
  • Zipcode:51800
Send your message to this supplier
Ms  Lieen
Enter between 20 to 3,000 characters,English only.