Sulfur Dioxide Sensor (SO2) | 0 - 20 ppm |

Model: FD-SO2-REPLACEMENT
Datasheet: Click Here PDF
Availability: Usually in stock
Compatible: FD-90A-SO2

Features

• ⚛️ High precision and long life (2 years)
• 🚄 Fast response speed, fast return to zero 
• 🔋 Low power consumption, high sensitivity
• 🔬Wide linear range, strong anti-interference ability
• 💪 Excellent repeatability and stability

Description

These are generic SO2 sensors used as the pin-to-pin replacement of the standard 4-series electrochemical sensors. It is used throughout many gas detector brands and is an excellent SO2 gas sensor replacement element.

Our SO2 sensor employs an advanced electrolytic mechanism where sulfur dioxide and oxygen engage in precise oxidation-reduction reactions across specialized electrodes. By generating an electrical current directly proportional to the gas concentration, this sophisticated sensor enables accurate measurement of sulfur dioxide levels. The current's magnitude provides a quantitative assessment of SO2 presence in various environmental and industrial monitoring applications.

Our SO2 detection technologies serve as critical monitoring tools across diverse industrial and environmental sectors. From industrial sites and livestock facilities to smart city infrastructure and atmospheric research, SO2 detectors provide comprehensive gas concentration insights. These advanced sensing systems enable precise measurement, early warning mechanisms, and comprehensive monitoring, supporting environmental protection, public health, and regulatory compliance in multiple critical application domains.

Instructions

• Once replaced and installed in your gas detector or analyzer, please let it sit for 24 hours so the sensor can stabilize to your environment. This step is very important.
• Then undertake the appropriate zero and calibration for your specific gas detector. See your gas detector manufacturer's specific instructions.
• Once calibrated, your gas analyzer will be ready for use.

Specifications

Detection Principle	Electrochemical Three electrodes
Detection Gas	SO2
Detection Range	0-20 PPM
Maximum Load Concentration	150 PPM
Output Signal	500±100 nA/PPM
Zero Drift	0~1 PPM
Resolution	0.1 PPM
Response Time	<45s
Bias Voltage	0
Load Resistance	5~30Ω
Working Temperature	-30℃-50℃
Working Humidity	15%RH to 90%RH (no condensation)
Repeatability	<±2% output signal
Long-term Stability	<2% signal/month
Linearity	Linearity 150 PPM
Work Pressure	90 to 110 kPa
Shelf Life	12 months after delivery
Service Life	2 years

Cross-Sensitivity Data

Interfering Gas	Gas Concentration Used (ppm)	Value Displayed (ppm HCL)
CO	400	<3
H2S	20	0
H2	2000	<8
NO	20	0
NO2	20	<-24