Hydrogen sulfide sensor S-H2S
- Manufacturer: Nesa
- Category: Gases - Particles, Meteorology – Climatology, SENSORS
The NESA S-H2S is a sensor for measuring the concentration of H2S (hydrogen sulfide) 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÷100 ppm or 0÷2000 ppm, resolution < 0.1 ppm (100) or < 1 ppm (2000) and response time <30 s. Output 4÷20mA / ModBus RS485.
Key points
- Range 0÷100 ppm or 0÷2000 ppm; resolution < 0.1 ppm (100) or < 1 ppm (2000)
- Response time 24 months
- Overload limit 500 ppm (range 0÷100 ppm) or 4000 ppm (range 0÷2000 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-H2S measure?
The concentration of H2S (hydrogen sulfide), using an electrochemical or infrared (NDIR) measurement principle (depending on the gas).
What range and resolution does it have?
0÷100 ppm (resolution < 0.1 ppm) or 0÷2000 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-H2S), output (A) and accessories: CS05, CS10 or CSxx sensor-datalogger cable. Example: S-H2S A 10.
Properties
| Feature | Specification |
|---|---|
| Measurement and operating principle | |
| Gas | H2S (hydrogen sulfide) |
| Measurement principle | Electrochemical or infrared (NDIR) (depending on the gas) |
| Range | 0-100 ppm or 0-2000 ppm |
| Resolution (0÷100 ppm) | < 0.1 ppm |
| Resolution (0÷2000 ppm) | < 1 ppm |
| Response time | <30 s |
| Shelf life | >24 months |
| Overload limit (0÷100 ppm) | 500 ppm |
| Overload limit (0÷2000 ppm) | 4000 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-H2SSH2S | Output: ModBus RTU · Supply: Full scale 100 ppm or 2000 ppm, IP54, with 1 m cable |
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