Portable VOC analyzer

Brief introduction

VOCs are a general term for a series of volatile organic compounds, which are important atmospheric pollutants. When present in the air, they undergo chemical reactions to produce fine particles such as secondary aerosols (SOA), as well as chemical pollution caused by the generation of ozone.

At present, VOCs emissions in China mainly include two parts: anthropogenic sources and natural sources. The former includes vehicle exhaust and industrial emissions, while the latter includes plant volatilization. At present, industrial VOCs are the main battlefield for control in China. Among them, petrochemical and packaging printing are at the forefront as pilot industries!

In response to the diversity and complexity of measuring VOCs, we have introducedPortable VOC analyzerPID can facilitate customers to detect the required areas at any time, with high accuracy, fast response, and high stability. It has a wide range of compatible expansion interfaces and can be configured with a variety of sampling extension rods according to different customer needs, suitable for different environments!

2、 Industry Applications

The current national standards for VOCs are mainly concentrated in industries such as petrochemicals, chemicals, oil storage and transportation, plastic, rubber, leather products, as well as social services, furniture, and batteries. Local standards are mainly distributed in industries such as biopharmaceuticals, automotive painting, and printing. As of this year, there are currently 76 organic pollutant projects.

3、 Product Features

GLT-VOC700 typePortable VOC analyzerSuitable for monitoring the trend or range of VOC concentration changes in ambient air and surrounding gases, and detecting whether there are significant abnormal concentration issues in unorganized emissions or open areas. It is mainly used for leak warning and environmental monitoring.

a) Using a touch 4.3-inch LCD screen, the operation is simple.

b) Communication RS232 output

c) After charging, it can be used for 4-6 hours

d) It can perform automatic calibration of zero and full range.

e) Can compensate for other cross interfering gases.

f) The enclosure has a protection level of IP65 and is suitable for outdoor use.

g) Repeatability: ± 1% FS

h) Linearity: ± 2% FS

i) Drift: Zero/Full Scale ± 2% FS

4、 Principle

The PID photoionization detector uses a vacuum ultraviolet lamp (UV) with a specific ionization energy (such as 10.6eV) to generate ultraviolet light. When organic gas molecules bombard gas molecules in the ionization chamber, the organic molecules contained in the gas are ionized and broken into positively charged ions and negatively charged electrons. Under the electric field of the polarizing plate, the ions and electrons collide with the plate, forming a detectable weak ion current.

The gas around the air is extracted into the system through an extraction pump, impurities in the air are filtered through a micro filter, water vapor is removed through a micro water barrier, and finally enters the detector for analysis to remove impurities and the impact of water vapor on the sensor, ensuring measurement accuracy.

5、 Technical parameters

Physical Characteristics

Complete sensing unit includes detector cell, UV lamp, lamp driver, amplifier and sample filter

All sensors calibrated with Isobutylene

Warranty Period: 1st of 18 months from ship date or 12 months from install date

Electrical Characteristics

Operating Conditions