Product Description:
YJJ 3NO2-500CT 057-3000-100 Electrochemical Nitrogen Dioxide NO2
Sensor Flue Gas Emission Harsh Industrial Environments
Features:
3NO2-500CT is a three-electrode electrochemical nitrogen dioxide
(NO2) sensor, primarily used for quantitative detection of NO2
concentrations ranging from 0 to 500 ppm. It is suitable for harsh
industrial environments such as industrial emissions and process
control, and can directly replace the mainstream 3-series NO2
sensors. It offers stable linear output and strong
anti-interference capabilities.
Core parameter description (20℃, standard atmospheric pressure)
Parameter Value Remarks
Detected gas Nitrogen dioxide (NO2) Three-electrode electrochemical
principle
Range 0-500ppm Maximum overload 1000ppm
Sensitivity -0.37±0.07μA/ppm Current signal is proportional to the
concentration, and the signal is output in a negative direction
Response time (T90) ≤35s Quickly captures concentration changes
Baseline (20℃) ±2ppm Initial zero position deviation is small
Baseline drift (-20℃~50℃) < -1ppm Controllable drift in a wide
temperature range
Resolution 0.5ppm Meet the routine monitoring accuracy
Linearity Linear Zero bias 0mV, no additional bias circuit required
Operating temperature -20℃~50℃ Adapt to industrial and outdoor
environments
Pressure range 1 standard atmosphere ±10% Compatible with routine
conditions
Humidity range 15%~90% RH (no condensation) Avoid the influence of
condensation on performance
Long-term stability <2% signal value/month Reliable long-term
monitoring data
Service life 3 years (in air) Storage temperature 10℃~30℃
Safety integrity Maximum open-circuit voltage 1.3V, maximum
short-circuit current < 1mA Compatible with explosion-proof
scenarios
Main applications
Industrial flue gas emission monitoring: Used for real-time
monitoring of NO2 emissions from fixed pollution sources such as
waste incineration plants, nitric acid plants, and electroplating
plants, meeting the continuous monitoring requirements of
environmental protection regulations for chimney emissions.
Industrial safety and process control: In production processes
involving NO2, such as chemical synthesis, metal processing, and
welding, real-time monitoring of leaks and process gas
concentrations to ensure personnel safety and production stability.
Environmental air quality monitoring: Integrated into air quality
monitoring stations or mobile monitoring equipment, used for
grid-based monitoring of NO2 concentrations in urban and industrial
park environments, assisting in pollution source tracing and
governance decision-making.
Equipment and instrument integration: As the core sensing element,
embedded in portable NO2 detectors, online analyzers, etc.,
suitable for complex working conditions such as explosion-proof and
outdoor environments, supporting rapid replacement of mainstream
3-series sensors, reducing maintenance costs.
Specifications:
| Overload | 0-500 PPM |
| Response time | 25 s |
| Size | 20 x 16.5 |
| detection range | 0-50ppm |
| Sensitivity | 450-750 na/PPM |
