adopt standards

HJ/T75—2007Technical Specification for Continuous Monitoring of Flue Gas Emissions from Fixed Pollution Sources

HJ/T76-2007 Technical Requirements and Monitoring Methods for Continuous Monitoring System of Flue Gas Emissions from Fixed Pollution Sources

GB13223-1996 "Emission Standards for Air Pollutants from Thermal Power Plants"

Main technical parameters

Monitoring of smoke and dust concentration

Method: Backscatter method

Measurement range: (0-500~1000) mg/m3 (range can be modified)

Zero drift: ≤± 2.0% F.S

Range drift:≤±2.0%F.S.

Output signal type: (4-20) mA/(0-10) V

Sampling method: direct measurement, no sampling required

Continuous smoke monitoring

SO2

Measurement range: (0-71500) mg/m3 (range can be modified)

Zero drift: ≤± 2.0% F.S

Range drift:≤±2.0%F.S

Response time:<180S

O2

Measurement range: (0-25)%

Resolution:0.1%

Zero drift: ≤ 2.0% F.S

Range drift:≤2.0%F.S

Response time:<180S

NO

Measurement range: (0-7150) mg/m3 (range can be modified)

Zero drift: ≤ 2.0% F.S

Range drift:≤2.0%F.S

Response time:<180S

Temperature, pressure, and flow rate monitoring of flue gas

flow velocity

Method: Micro pressure differential pitot tube method

Measurement range: (0-40) m/s

Resolution: 0.1m/s

temperature

Method: Pt100

Measurement range: (0-500) ℃

Measurement accuracy: ≤ 3 ℃

pressure

Method: Differential pressure sensor

Measurement range: (-20~+20) kPa

Instrument usage environment

Temperature: (-20~50) ℃, optimal working temperature: (22~25) ℃

Best operating temperature: (22-25) ℃

Output format: (4~20) mA, RS232

Power supply: AC220V ± 22V, 50Hz

Computer monitoring software

Store data for over ten years

Formulate reports and curves in national standard format

Display various working statuses of the system

Remote transmission via wired or wireless means