ShenzhenYijiajie Electronic Co., Ltd.
| Delivery Time | 5-8 days |
| Long-term drift | < 2% signal / month |
| Supply Ability | 1500 |
| Packaging Details | Canned |
| Bias voltage | 0 mV |
| Operating pressure | atmospheric pressure ±10% (90–110 kPa) |
| Operating humidity | 15%–90% RH (no condensation) |
| Expected lifespan | 2 years in air |
| Payment Terms | L/C, D/A, D/P, T/T, , |
| Operating temperature | -20℃ to +50℃ |
| Brand Name | YJJ |
| Model Number | 4SO2-2000 CLE-0423-400 |
| Place of Origin | Britain |
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Product Specification
| Delivery Time | 5-8 days | Long-term drift | < 2% signal / month |
| Supply Ability | 1500 | Packaging Details | Canned |
| Bias voltage | 0 mV | Operating pressure | atmospheric pressure ±10% (90–110 kPa) |
| Operating humidity | 15%–90% RH (no condensation) | Expected lifespan | 2 years in air |
| Payment Terms | L/C, D/A, D/P, T/T, , | Operating temperature | -20℃ to +50℃ |
| Brand Name | YJJ | Model Number | 4SO2-2000 CLE-0423-400 |
| Place of Origin | Britain | ||
| High Light | electrochemical sulfur dioxide sensor ，SO2 gas sensor for environmental monitoring ，YJJ sulfur dioxide sensor with warranty | ||
Product Description:
YJJ 4SO2-2000 CLE-0423-400 Electrochemical Sulfur Dioxide (SO2) Sensor for Environmental Monitoring
Features:
4SO2-2000 (CLE-0423-400) Three-electrode Electrochemical Sulfur Dioxide (SO₂) Sensor, specially designed for industrial and environmental monitoring with a range of 0–2000 ppm.
I. Core Parameters (Standard Specifications) Table
Parameter Item Value
Model 4SO2-2000 / CLE-0423-400
Detected Gas Sulfur Dioxide (SO₂)
Measurement Range 0–2000 ppm
Maximum Overload 4000 ppm
Sensitivity 0.020 ± 0.008 μA/ppm
Baseline (20℃) < ±0.4 μA
Baseline Drift 0–4 ppm SO₂ Equivalent (-20~40℃)
Resolution 5 ppm
Response Time (T90) ≤ 60 seconds
Linearity Full Scale Linearity
Long-Term Drift < 2% Signal / Month
Operating Temperature -20℃ ～ +50℃
Operating Humidity 15%–90% RH (No Condensation)
Operating Pressure Air Pressure ±10% (90–110 kPa)
Offset Voltage 0 mV
Expected Lifespan Airborne 2 Years
Warranty Period 12 Months After Shipment
Size / Weight φ20.2 mm, Approximately 5 g
II. Working Principle
It adopts the three-electrode electrochemical principle: SO₂ undergoes oxidation/reduction reactions at the working electrode, generating a weak current proportional to the concentration, which is amplified by the circuit and output as a concentration signal; no heating is required, and the power consumption is extremely low, making it suitable for portable and fixed equipment.
III. Typical Applications
Industrial Safety Monitoring: SO₂ leakage detection and alarm in chemical plants, metallurgy, thermal power, petrochemicals, etc.
Environmental Monitoring: Continuous monitoring of SO₂ concentration in flue gas emissions, waste gas treatment, atmospheric environment.
Fixed / Portable Instruments: Gas detectors, multi-parameter analyzers, flue gas analyzers, air quality monitoring stations.
Special Scenarios: Laboratory, storage, ships, mines, etc. for safety detection in restricted spaces.
IV. Selection and Usage Tips
Compatible with the 4-series industrial standard size and most gas detection instrument bases.
Recommended to connect using a PCB socket, and prohibit direct welding of pins at high temperatures.
Suitable for medium to high concentration SO₂ scenarios; for low concentrations (below ppm level), recommend models such as 4SO2-20 with smaller measurement ranges.
Specifications:
| Measurement Range | 0–2000 ppm |
| Maximum Overload | 4000 ppm |
| Sensitivity | 0.020 ± 0.008 μA/ppm |
| Resolution | 5 ppm |
| Response Time (T90) | ≤ 60 seconds |
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2006
Total Annual:
900000-1000000
Employee Number:
50~80
Ecer Certification：
Verified Supplier
Yijiajie Electronics is a full range of silicon pressure sensors from the United States, FREESCALE/, GE, MEAS, SMI, and a full range of sensing and control products from the United States pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV sensors, ph... Yijiajie Electronics is a full range of silicon pressure sensors from the United States, FREESCALE/, GE, MEAS, SMI, and a full range of sensing and control products from the United States pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV sensors, ph...
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