nitrogen oxides test principles and characteristics

Nitrogen oxides detector Effective monitoring of nitrogen emissions can be achieved, thereby reducing the occurrence of accidents. Nitrogen oxides, dominated by nitrogen oxides and nitrogen dioxide, are an important cause of photochemical smoke and acid rain. It's called photochemical smoke. Photochemical smoke has a special smell. Stimulating the eyes, Harming plants, It also reduces atmospheric visibility. Nitrogen oxides, which react with water in the air, are the components of acid rain. Nitrogen oxides in the atmosphere are mainly from the burning of fossil fuels and the burning of plants. And the transformation of nitrogen compounds in agricultural soils and animal excreta.

I. Nitrogen oxides test principles

The key component of the gas detector is the gas sensor. The gas sensor can be classified in principle into three broad categories:

A) Gas sensors of a physico-chemical nature such as semiconductor (surface control, volume control, surface level), catalytic combustion, solid thermal conductor, etc.

B) Use of gas sensors of a physical nature such as thermal conductor, light interferometry, infrared absorption, etc.

C) Use of electrochemical gas sensors such as Electrolytic, Gavarie battery, diaphragm ion electrode, fixed electrolyte, etc.

II. Basic properties of the nitrogen oxides instrument 

• Explosive Class ExdIICT6

• High-precision, long-lived imported electrochemical nitrogen oxides sensors

• Auto-track zero, full range, temperature compensation

:: Automatic protection against high concentration gas shocks

• Full software calibration, with users able to calibrate on their own, with 3 keys and simple operations

● Trilinear 4～20mA Output

• Two cable portals to facilitate installation on site

• Independent gas chamber structure, easy replacement of sensors

III. Nitrogen oxides technical indicators 

Detected gases: nitrogen oxides in air

Test principles: electrochemical

Measurement range ：0～100ppm、500ppm、1000ppm、2000ppm、5000ppm

Resolution   ：0.01ppm（0～100 ppm）；0.1ppm（0～1000 ppm）1ppm(0～5000 ppm）

Fine 　　 degrees ：±3%FS

Response Time ：≤30 sec

Recovery Time ：≤30 sec

Explosive marker: ExdIICT6

Blast-proof connection screw: 3/4 "NPT

Installation: walled, piped options

Method of measurement: diffuse, pump-inhaled, mobile optional

Signal Output ：2 Wire 4～20mA Standard current

Maximum transmission distance: 1100 m (Rvv0.75 mm sq. mm shield cable)

Working temperature ：-20℃～+50℃

Relative humidity ：10%～95%RH

Power supply: 24 VDC ±12 VDC

Maximum power: 2.5 W

Heavy     Volume ： Approximately 1.5Kg