Biogas Analyzers
KSA-2500Ex
Explosion-proof UV-DOAS Biogas Monitoring System
- Model
- KSA-2500Ex
- Manufacturer
- SENSORONIC
- Category
- Gas Analyzers › Biogas Analyzers
Parameters: CH4, CO2, H2S, O2
IndustriesEnergy & Biogas
Measurement PrincipleUV-DOAS
Overview
KSA-2500Ex is an explosion-proof UV-DOAS biogas analysis system that continuously measures and monitors the main biogas components CH4, CO2, H2S and O2.
It measures high-concentration H2S with 1 ppm resolution using UV absorption spectroscopy (UV-DOAS), and 2-channel sampling that switches between upstream and downstream of the H2S scrubber allows removal efficiency to be monitored.
It features automatic moisture removal, automatic purge and flow control, stainless-steel sampling lines, an IP65 stainless-steel cabinet and High & Low alarm outputs.
Key Features
- Continuous measurement of 4 gases: CH4, CO2, H2S, O2
- Precise high-concentration H2S analysis using UV-DOAS
- NDIR and electrochemical (ECD) sensors
- 2-channel sampling system upstream and downstream of the H2S scrubber
- Switching between upstream and downstream sampling points
- Monitoring of H2S scrubber removal efficiency
- H2S measurement with 1 ppm resolution
- Capable of measuring high-concentration H2S
- High accuracy and long life of the UV-DOAS sensor
- Automatic moisture removal and drain
- Automatic purge and gas flow control
- Stainless-steel sampling line
- Ex d IIC T6 explosion-proof design
- IP65 stainless-steel protective cabinet
- 4~20 mA analog output
- RS-232/RS-485 Modbus communication
- High & Low alarm output
- Modular sensor design for easy calibration
- Suitable for continuous monitoring of biogas production and treatment facilities
Measured Parameters
| Parameter | Measuring Range |
|---|---|
| CH4 | 0~100%vol |
| CO2 | 0~50/100%vol |
| H2S | 0~500/5000ppm |
| O2 | 0~25%vol |
Measurement Performance
| Parameter | Method · Accuracy · Resolution |
|---|---|
| CH4 | Method: NDIR · Accuracy: ±2%FS · Resolution: 0.01%vol |
| CO2 | Method: NDIR · Accuracy: ±2%FS · Resolution: 0.01%vol |
| H2S | Method: UV-DOAS · Accuracy: ±2%FS · Resolution: 1ppm |
| O2 | Method: ECD · Accuracy: ±2%FS · Resolution: 0.01%vol |
Specifications
| Manufacturer | SENSORONIC |
|---|---|
| Measured gases | CH4, CO2, H2S, O2 |
| Method | UV-DOAS / NDIR / ECD |
| Accuracy | ±2%FS |
| Repeatability | ≤1% |
| Response time (T90) | Within 10 s (NDIR) / within 20 s (ECD) |
| Gas flow rate | 0.7~1.2 L/min |
| Gas pressure | 2~50 kPa |
| Analog output | 4~20mA |
| Digital communication | RS-232/RS-485, Modbus Protocol |
| Alarm function | High & Low alarm output |
| Sampling method | 2-channel sampling upstream and downstream of the scrubber |
| Moisture removal | Condensate tank and manual drain valve |
| Purge function | Automatic gas and air vent valves |
| Heating system | Heated line at temperatures below 0℃ |
| Sampling line | Stainless steel |
| Gas outlet | Moisture removal from high-humidity sample gas |
| Enclosure material | Stainless-steel cabinet |
| Explosion-proof rating | Ex d IIC T6 |
| Protection rating | IP65 |
| Operating temperature | -15℃ ~ +45℃ |
| Operating humidity | 0~95%RH (non-condensing) |
| Ambient pressure | 80~120 kPa |
| Power supply | AC220V, 50Hz |
| Dimensions | 1600×700×600 mm (H×W×D) |
| Weight | 140 kg |
Applications
- Biogas composition analysis of anaerobic digesters
- Biogas engines and combined heat and power (CHP) plants
- Landfill gas monitoring
- Gas concentration monitoring of biogas flares
- Biogas production and treatment facilities in explosion-hazard areas
- Hydrogen sulfide measurement upstream and downstream of H2S scrubbers
- Biomethane production and upgrading facilities
- Biogas composition analysis at wastewater treatment plants
- Quality control and process control of biogas upgrading
Related Products
Biogas Analyzers
KSA-2000
Biogas Analyzer
Parameters: CH4, CO2, H2S, O2, Flow
Biogas Analyzers
KSA-2000P
Portable Biogas Analyzer
Parameters: CH4, CO2, H2S, O2, H2
Biogas Analyzers
KSA-2000PLUS
Portable Biogas Analyzer
Parameters: CH4, CO2, H2S, O2, CO, H2
Biogas Analyzers
KSA-2100UV
UV-DOAS Biogas Analyzer
Parameters: CH4, CO2, H2S, O2