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SulfurGuard Filter Time Interval Explanation

The CG series filter

The SG series filter

The PSF series filter

The PSF series filter

The PSF series filter has a specific rating for filter failure. Failure is based on the filter media plugging and not absorbation. There are two methods of use for the PSF filter. The first is to use the filter without cleanings. Using this method will allow you to run the filter until complete failure and then replace the filtration discs. I have listed failure rates in the chart below. To find the number of hours or weeks the filter will last, we use a linear relationship.

hours of flow prior to failure =	failure rate of filter at ppm level
	flow rate

 

Weeks prior to replacment =	Hours of flow prior to failure
	Hours of use per week

 

Filter element	Typical flow rate scenario	PPM Level	Lbs. of CO2 absorbed prior to failure
FMT-10-S20x10	<2,000 lb/hr	0.05	1,956,757
FMT-10-S20x10	<2,000 lb/hr	0.10	1,036,042
FMT-14-S20x8	>2,000 lb/hr	0.05	13,156,018
FMT-14-S20x8	>2,000 lb/hr	0.10	7,254,165

*Note: In examples where two different contaminants are present at 2 different ppm levels, we would use the higher of two levels for our failure rate.

Example:

Company is running CO2 filter system at 350 psi and 4,000 lbs. per hour. System is used for 40 hours per week. Incoming CO2 is expected to have 0.05 ppm contaminant level of H2S and COS.