Nitrogen dioxide sensor S-NO2
- Manufacturer: Nesa
- Category: Gases - Particles, Meteorology – Climatology, SENSORS
The NESA S-NO2 is a sensor for measuring the concentration of NO2 (nitrogen dioxide) in a wide range of applications, both industrial and environmental, specifically made for outdoor applications with IP54 protection rating.
Electrochemical or infrared (NDIR) measurement principle (depending on the gas), range 0÷20 ppm or 0÷200 ppm, resolution <0.1 ppm (20) or <1 ppm (200) and response time <40 s. Output 4÷20mA / ModBus RS485.
Key points
- Range 0÷20 ppm or 0÷200 ppm; resolution <0.1 ppm (20) or <1 ppm (200)
- Response time: 12 months
- Overload limit 100 ppm (range 0÷20 ppm) or 1000 ppm (range 0÷200 ppm)
- Output 4÷20mA / ModBus RS485; power supply 11…30 Vdc; consumption < 2VA
- Operating range -30 ÷ 50°C; humidity 15…90 %RH non-condensing; IP54; 230 g; CE
Technical Frequently Asked Questions
What does S-NO2 measure?
The concentration of NO2 (nitrogen dioxide), using an electrochemical or infrared (NDIR) measurement principle (depending on the gas).
What range and resolution does it have?
0÷20 ppm (resolution <0.1 ppm) or 0÷200 ppm (resolution <1 ppm).
What exits does it have?
4÷20mA / ModBus RS485.
What is their diet and consumption like?
Power supply 11…30 Vdc and consumption < 2VA.
How do I order it?
Sensor (S-NO2), output (A) and accessories: CS05, CS10 or CSxx sensor-datalogger cable. Example: S-NO2 A 10.
Properties
| Feature | Specification |
|---|---|
| Measurement and operating principle | |
| Gas | NO2 (nitrogen dioxide) |
| Measurement principle | Electrochemical or infrared (NDIR) (depending on the gas) |
| Range | 0-20 ppm or 0-200 ppm |
| Resolution (0÷20 ppm) | <0.1 ppm |
| Resolution (0÷200 ppm) | <1 ppm |
| Response time | <40 s |
| Shelf life | >12 months |
| Overload limit (0÷20 ppm) | 100 ppm |
| Overload limit (0÷200 ppm) | 1000 ppm |
| Exit signals | |
| Exit sign | 4÷20mA / ModBus RS485 |
| Power supply, environment, and mechanical data | |
| Feeding | 11…30 Vdc |
| Consumption | < 2VA |
| Operating range (°C) | -30 to 50°C |
| Humidity | 15…90 %RH non-condensing |
| Degree of protection | IP54 |
| Use | For outdoor use |
| Dimensions | View map |
| Weight | 230 g |
| Regulatory compliance | EC |
| Reference | Configuration |
|---|---|
| S-NO2SNO2 | Output: Modbus RTU · Supply: Full scale 20 ppm or 200 ppm, IP54, with 1 m cable |
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