PID analyzer is a photoionization gas detector. It is used to measure the concentration of ionized particles. Besides that, it is also used to measure the concentration of volatile organic substances. It simply measures the concentration from the sub-parts billions to 10000 parts per million. This equipment generally releases the photons and these photons are absorbed by the ionization chamber. In a PID Analyzer, you get an immediate result, so you can easily and quickly note the readings.
What technology is used by the PID Analyzer?
PID Analyzer uses the Gas chromatography column supplier technology. This technology is generally used for gas separation in this equipment. In all this process one phase remains fixed on the other hand the second phase is a mobile phase, which is a carrier gas. This mobile phase flows over the stationary phase. The compounds with the lower vapor pressure remain stationary for a longer time.
There are two factors on which it depends for how long a compound can be in a stationary phase:
1. The first one is the compound’s vapor pressure
2. And the second one is “what is its solubility in the stationary phase?”
What are the benefits of the PID Analyzer?
There are several benefits of a PID analyzer for the detection process. These are:
· First of all the PID Detectors is very reliable.
· After that, these are very cost-effective. You can easily afford them.
· They provide very clear and quick results.
· And they are very long-lasting as well.
What is an FID?
Like PID, FID is also used to measure organic vapors, gases, and some inorganic compounds. FIDs are generally heavier than that PIDs. Besides that to determine the concentration of any gas the FIDs use the hydrogen-air flame to ionize the gas. Hydrocarbons, it is a very sensitive devices. But there is a weak point in that they destroy the sample after the ionization. So, you cannot use the sample for any other analysis after FID analysis. On the other hand, the PIDs are non-destructive. In PID the sample can be used even after the PID analysis. There is a good thing about the FID, that there is no impact of humidity on the FID analyzer. So, in this case, these are better than the PID analyzers. You must be surprised to know that the reading produced by the FID and the PID is quite different. FIDs show better results for the compounds of the carbon chain especially. For the compounds with functional groups, PIDs do a better job.
Disadvantages of FID Analyzer:
There are some disadvantages to FID Analyzer. These are:
First of all, these are not reliable.
After that, they are very costly.
The next thing is that its flame goes out so, it needs to fulfill the hydrogen cylinder regularly.
Now you know the difference between the PID and the FID analyzer. You know their good and bad. So, choose accordingly, you are totally free to make your choice.
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