ZG3000EX NDIR Online Monitoring System Explosion Proof

System Characteristics

The system uses the imported sampling pump to pump CO gas in the coal mill or pulverized coal bin through the sampling probe, and the sample gas is pre-processed, and the SJ300 infrared CO analyzer is used to complete the detection of the CO gas concentration. Any increase in CO concentration is a sign of an early fire alarm, and the system can make a corresponding alarm.

The SJ3000EX complete set of equipment consists of seven parts: sampling, back-purge, gas sample pretreatment, gas sample analysis, instrument calibration, program control and signal output.

Project

Indicators

Measurement standard

CO、CO2、CH4、H2、O2、CnHm

CO、CO2

NDIR

Measuring method

H2

TCD thermal conductivity

O2

ECD electrochemistry

CO

0~100ppm, 0~100%

CO2

0~10ppm, 0~100%

Detection range

CH4

0~200ppm, 0~100%

H2

0～100%

O2

0~25%

CnHm

0~100ppm, 0~100%

Resolution ratio

≤ ±0.01%

CO、CO2、CH4、CnHm：≤ ±1%FS

Accuracy

H2、O2：≤ ±2%FS

Repeatability

≤1%

Measurement standard

CO、CO2、CH4、H2、O2、CnHm

Flow

0.7~ 1.2 L/min

Response time

T90＜25s（NDIR）

Working power

AC220V±10%，50HZ

Work environment

－5℃～+45℃；Humidity ≤ 90% RH

Sample gas flow

ExdIICT6 / Ex d e pz lIC T4 Gc

Signal transmission

RS485,4-20mA