Continuous Automatic Monitoring System for Ambient NMHC

Product Introduction

The ambient air NMTC continuous automatic monitoring system consists of sampling manifold, pretreatment unit, analytical instrument, hydrogen generator, zero gas generator, air compressor, meteorological parameters, dynamic calibrator, electronic control unit, etc. It adopts the direct measurement method of cold trap enrichment to monitor the NMTC organics, which features low detection limit and good reproducibility. It can be applied in the industrial parks and the regions.

This equipment has higher reproducibility of VOCs components and smaller system drift and it can sensitively capture the complex and subtle changes of VOCs components in the boundaries of the enterprise or ambient air in real time. And real-time on-line monitoring of total hydrocarbons, non-methane total hydrocarbons, and methane and other indexes can be realized. At the same time, it meets the requirements of online data analysis, reporting and remote transmission of relevant national ambient air quality monitoring standards, and combines meteorological temperature, relative humidity, wind speed, wind direction, barometric pressure and other parameters to provide a scientific basis for the assessment of the pollution status of the characteristics of the VOCs in the regional ambient air and the trend of change.

 

Technical characteristics

⭐ The sampling pre-treatment system adopts constant temperature accompanied by heat to avoid condensation of water vapor in the sample gas and affect measurement concentration of the sample gas.

⭐ Perfect combination of dynamic curve tracking correction function (DCC) and multi-point calibration technology.

⭐ Simultaneously measure the five parameters of environmental meteorology, total hydrocarbons, methane, non-methane total hydrocarbons.

⭐ It can be equipped with explosion-proof instrument cabinet, suitable for explosion-proof occasions installation requirements.

⭐ The use of silanized gas piping greatly reduces the adsorption of gas samples in the pipe wall.

⭐ Intelligent FID detector flame out self-ignition alarm function, which enables effective safety control of hydrogen flame gas lines.

⭐ This analyzer supports multi-detector configuration to improve the application range of the analyzer.

⭐ TCP/IP network for remote control of the analyzer and on-site operation by touching the LCD screen.

Performance Parameters

Range	0~5ppm
FID baseline noise	1*10-12A
FID baseline drift	1*10-12A
FID detection limit	1.8*10-12g/s
Response time	120s
Zero drift	<0.5%F.S(24h)
Range drift	<2.0%F.S(24h)
Power specification	220VAC50Hz
Operating power	500W
Operating temperature	5~35℃
Operating humidity	<90%RH
Sample gas temperature	5~35”C
Sample gas flow rate	Not less than 0.5L/min
Methane chromatography column	Porapak Q packed column
Detector	FID detector
Analog input/output	USB；Relay interface；LAN；RS232；VGA

 

Case study