SS2198 (H₂S)

Electrochemical H₂S Sensor (0~100ppm)

DESCRIPTION

The SS2198 is a high-sensitivity electrochemical hydrogen sulfide (H₂S) sensor capable of measuring concentrations in the 0–100 ppm range. It features a strong linear output of 700 ± 200 nA/ppm, fast response time under 20 seconds (T90), and high resolution of less than 0.1 ppm, making it ideal for low-concentration H₂S detection. With low cross-sensitivity to CO, H₂, SO₂, NO, and NO₂, the sensor performs reliably in complex gas environments. Its long lifespan (over 24 months) and excellent repeatability make it suitable for petrochemical, wastewater, refinery, mining, and confined space applications.

KEY FEATURES

- Measuring Range: 0–100 ppm (Max: 500 ppm)
- Output Signal: 700 ± 200 nA / ppm
- Resolution: <0.1 ppm (typical)
- Response Time: T90 < 20 sec
- Low Cross-sensitivity: CO, H₂, SO₂, NO, NO₂
- Service Life: ≥24 months
- Excellent Linearity and Repeatability

Performance Characteristics
Output Signal	700±200 nA / ppm
Typical Baseline Range (pure air, @ 20℃)	±2 ppm H₂S equivalent
Response Time (T90)	< 20 seconds
Filter	None
Measurement Range	0–100 ppm
Maximum Overload	500 ppm
Linearity	Linear
Repeatability	< ±2 ppm H₂S equivalent
Recommended Load Resistor	10 ohms
Resolution (Electronics Dependent)	< 0.1 ppm typical
Bias Voltage	0 mV
Environmental
Temperature Range Continuous	-20℃ to +50℃
Pressure Range	800 to 1200 mbar
Operating Humidity Range	15% to 90% RH
Lifetime
Long Term Output Drift	< 5% per annum
Recommended Storage Temp	0℃ to 20℃
Expected Operating Life	> 24 months in air
Standard Warranty	24 months from date of dispatch
Intrinsic Safety Data
Maximum at 1,000 ppm	40 mA
Maximum o/c Voltage	< 1.0 V
Maximum s/c Current	< 0.1 A

Performance Characteristics

Output Signal

700±200 nA / ppm

Typical Baseline Range (pure air, @ 20℃)

±2 ppm H₂S equivalent

Response Time (T90)

< 20 seconds

Filter

None

Measurement Range

0–100 ppm

Maximum Overload

500 ppm

Linearity

Linear

Repeatability

< ±2 ppm H₂S equivalent

Recommended Load Resistor

10 ohms

Resolution (Electronics Dependent)

< 0.1 ppm typical

Bias Voltage

0 mV

Environmental

Temperature Range Continuous

-20℃ to +50℃

Pressure Range

800 to 1200 mbar

Operating Humidity Range

15% to 90% RH

Lifetime

Long Term Output Drift

< 5% per annum

Recommended Storage Temp

0℃ to 20℃

Expected Operating Life

> 24 months in air

Standard Warranty

24 months from date of dispatch

Intrinsic Safety Data

Maximum at 1,000 ppm

40 mA

Maximum o/c Voltage

< 1.0 V

Maximum s/c Current

< 0.1 A

PRODUCTS

Product

SS2198 (H₂S)

SS2198 (H₂S)

Electrochemical H₂S Sensor (0~100ppm)

DESCRIPTION

KEY FEATURES

Product Specifications

Sensor Specifications

Accessories

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