SE-4SO2-2000-F

Electrochemical SO₂ Sensor (0–2000 ppm)

Product Description

The SE-4SO2-2000-F is an electrochemical sensor designed for accurate detection of sulfur dioxide (SO₂) gas within the 0 to 2000 ppm range. It is suitable for both fixed and portable gas detection devices, offering linear output and high resolution below 0.5 ppm. The sensor provides excellent selectivity with no response to major interfering gases such as CO, Cl₂, CO₂, and NH₃.

Additionally, it features a built-in filter with a capacity of 1000 ppm·hours that eliminates interference from H₂S, enabling precise measurements even in mixed-gas environments. The sensor operates reliably from -20℃ to +50℃ and provides an operating life of more than 24 months in air.

Key Features

- Measurement range: 0–2000 ppm
- Sensitivity: 60 ± 20 nA / ppm
- Response time: T90 < 60 sec
- Resolution: < 0.5 ppm
- Operating life: ≥ 24 months in air
- Operating temperature range: -20℃ to +50℃
- Low cross-sensitivity to: CO, Cl₂, CO₂, NH₃, H₂S, etc.

Performance Characteristics
Output Signal	60 ± 20 nA / ppm
Typical Baseline Range (pure air, @ 20℃)	≤ ±2 ppm SO₂ equivalent
Response Time (T90)	< 60 seconds
Filter	1000 ppm·hours H₂S filter capacity
Measurement Range	0–2000 ppm
Maximum Overload	5000 ppm
Linearity	Linear
Repeatability	< ±5% of signal
Recommended Load Resistor	10 ohms
Resolution (Electronics Dependent)	< 0.5 ppm typical
Bias Voltage	Not required
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	< 10% 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 5000 ppm	300 µA
Maximum o/c Voltage	< 1.0 V
Maximum s/c Current	< 0.1 A

Performance Characteristics

Output Signal

60 ± 20 nA / ppm

Typical Baseline Range (pure air, @ 20℃)

≤ ±2 ppm SO₂ equivalent

Response Time (T90)

< 60 seconds

Filter

1000 ppm·hours H₂S filter capacity

Measurement Range

0–2000 ppm

Maximum Overload

5000 ppm

Linearity

Linear

Repeatability

< ±5% of signal

Recommended Load Resistor

10 ohms

Resolution (Electronics Dependent)

< 0.5 ppm typical

Bias Voltage

Not required

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

< 10% 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 5000 ppm

300 µA

Maximum o/c Voltage

< 1.0 V

Maximum s/c Current

< 0.1 A

PRODUCTS

Product

SE-4SO2-2000-F (SO₂)

SE-4SO2-2000-F

Electrochemical SO₂ Sensor (0–2000 ppm)

Product Description

Key Features

Product Specifications

Sensor Specifications

Accessories

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