With the increasing tension of oil resources, the chemical industry derived from it will be the focus of China's medium and long-term energy development strategy, and will occupy an important position in the long-term development in the future. At the same time, in the industrial route, whether it is coking industry, coal gasification synthetic ammonia, or coal-based methanol, coal synthetic oil, coal chemical co-production, etc., in which the production of toxic waste gas needs to be online real-time monitoring and processing. Among these toxic waste gases, benzene is a common and typical waste gas.

Benzene is a chemical,The chemical formula isC6H6,is a colorless, toxic, flammable liquid,It has a special aromatic smell. Benzene has toxic properties. Although the poisoning caused by benzene exposure will not produce signs immediately, it will still affect human liver, kidney, nervous system, blood system, etc. Therefore, it is necessary to do a good job in chemical plants. The detection and treatment measures of benzene gas are placed to avoid human inhalation or intake of benzene gas.

For chemical enterprises, in order to protect the life and health of production personnel, they generally use light ion organic gas monitor to monitor benzene gas in waste gas in real time. The photo ion organic gas monitor is shown in the figure below.

photo-ion organic gas monitor

Sensors in light ion gas monitors are generally used.PIDsensors, because organic gases are generally volatile, andPIDThe sensor is designed to measureVOCGas. Here, let's recommend two models.PIDSensor, modelPID-A12/A15. Because of itsVOCHigh sensitivity, wide dynamic range and other characteristics, widely welcomed in the market.

PID-A12/15The sensor is a simple plug-and-play sensor that can detect thousands of volatile organic compounds in many different applications(VOC)Provides a dynamic and reliable response. Designed for diffusion and in-line pumped sampling, the sensor provides excellent response time and clearance. The sensor uses a bulb with special brightness and stability, which can reliably detect weak volatile and difficult-to-detect compounds over a long period of time 。

PID-A12 photo-ion sensor

PID-A12Key Features:

·Moisture resistance

·anti-pollution design

·Removable, pneumatically sealed sensing electrode set

·4/ADepartment

·12 month warranty(Excludes bulb and grid)

·life expectancy>5Year

Main specifications and parameters

Performance:

·Minimum resolution50 ppbisobutylene

·Range0-4000 ppmisobutylene

·T90Response time (Seconds)

·Sensitivity> 0.6 mv/ppmisobutylene

·Bulb Energy10.6 eV

Power consumption and signal:

·Supply voltage(Onboard Regulator Not Enabled)   3.2~3.6VDCIdeal adjustment range 0.01V

·Supply voltage(Onboard Regulator Enable)    3.6~10VDC(Application of the securityMax10V, non-InthenarianMax18V)

·Current20-32 mA(At startup130 mAContinued100 ms)

·Power consumption90 mW @ 3.3 V, continuous at startup200msof460mWinstantaneous power consumption

PID-A15Key Features:

PID-A15 photo-ion sensor

PID-A15Key Features:

·Moisture resistance

·anti-pollution design

·Removable, pneumatically sealed grid

·4/ADepartment

·12 month warranty

·life expectancy>5Year

Main parameters

Performance:

·Minimum resolution100ppbisobutylene

·Range0-4000 ppmisobutylene

·T90Response time (Seconds)

·Sensitivity> 0.69 mv/ppmisobutylene

·Bulb Energy10.6 eV

Power consumption and signal:

·Power consumption80mW~200mWDepends on supply voltage

·Supply voltage3.2~5.5VDC

·Output signal 0.040~2.85V