The MODEL 700HFID uses a FID flame ionization detector for full heating measurement. Total hydrocarbon THC, LEL and other indicators can be measured, with readings measured in propane or methane. The instrument is designed with high intelligence, automatic flow control, self diagnosis of status, automatic designation, low maintenance, and low usage cost. The product complies with the US Environmental Protection Agency's EPA Method 25 VOCs testing standard and is widely used in VOC continuous emission testing CEMS, RTO inlet LEL explosion limit testing, engine/vehicle testing, and EPA25A compliance testing

Product Features

1. Can measure VOCs content from low ppm to% percentage

2. The system is heated throughout the entire process, ensuring stable performance

3. Automatic calibration, automatic zero point correction

4. Built in heating sampling pump to reduce adsorption pollution

5. Electronic flow control system

6. Safe and reliable, FID flame detection, automatic shut-off of hydrogen flow and alarm when turned off

7. Fast response time, less than 1.5 seconds

8. The temperature of the measuring pool can be heated to 191 ℃

9. Low maintenance and long instrument lifespan

working principle

The 700 HFID analyzer uses a hydrogen flame ionization detector. FID is responsive to all hydrocarbons and has a wide range of applications, requiring hydrogen and zero point air as auxiliary gases. Hydrogen and co combustion gases produce hydrogen flames, which ionize organic compounds when they enter the combustion flame. The free electron beam generated by ionization is directly sent to the detection circuit through the polarizing electrode in the detector. The detection phone processes this electron beam as a current, and the magnitude of the current depends on the content of organic volatile compounds in the detector. By measuring the current, the concentration of VOCs can be calculated. The instrument can separate CH4 through a built-in high-temperature catalytic furnace, calculate the LEL alarm value based on the on-site working conditions, and output a warning signal.