SemeaTech Electrochemical H2S-1000 Sensors - 4-Series H2S-1000

This sensor is designed for the measurement of Hydrogen Sulfide concentration in gas phase.

  • Model Number: 4-Series H2S-1000
  • Data Sheet: Date Sheet File
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  • SemeaTech Electrochemical H2S-1000 Sensors
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Product Specification

Product Description

    This sensor is designed for the measurement of Hydrogen Sulfide concentration in gas phase. It can be used as the pin-to-pin replacement of the standard 4-series electrochemical Hydrogen Sulfide sensors which made by the other manufacturers.


Performance Characteristics

Nominal Range

0 ~ 1,000 ppm

Maximum Overload

2,000 ppm

Sensitivity (20)

0.105 ± 0.055 μA/ppm

Response Time (T90)

 45 s

Zero Signal (20)

< ±0.4 μA

Baseline Shift (-40~ 50)

< 10 ppm


1 ppm


Linear up to 1,000 ppm

Bias Voltage

0 mV



Temperature Range

-40~ 50

Pressure Range

1 ± 0.1 atm

Humidity Range

15% ~ 90%RH non-condensing


Life Time

Long Time Output Drift

< 2% signal/month

Recommended Storage Temp

10~ 30

Expected Operating Life

2 years in clean air

Storage Life

6 months in original packaging


24 months


Intrinsic Safety Data

Max. Current at 2,000ppm H2S

< 0.5 mA

Max. O/C Voltage

1.3 V

Max. S/C Current

< 1.0 A


Physical Characteristics:

Housing Material


Weight (Nominal)

5 g




Product Dimensions:


All dimensions in mm

All tolerances ±0.10mm unless otherwise stated


Temperature Data:



Safety Note:

    This sensor is designed to be used in certain instruments for life critical applications. To ensure the sensor functions per its specifications inside the instrument, it is required to read the instrument user's guide carefully and comply with the calibration procedures by using certified target calibration gas before each use. Failure to do so may cause serious injury and fatality. Please do not open the sensor plastic enclosure because the electrolyte and other chemicals stored inside are harmful.

    It is highly recommended for customers to validate the sensor performance using this document as a reference for their product designs or applications.

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