Showing 0 products
Frequently Asked Questions
What is the real compromise?
The two halves expire differently.
Particulate media loads and raises pressure drop.
Adsorbent saturates invisibly at constant resistance.
They are bound in one frame and change together.
One of the two is always discarded early.
Which one depends on the duty.
When is the carbon wasted?
In dusty environments with little gas.
Pressure drop forces an early change.
Most adsorbent capacity remains unused.
Adsorbent is the expensive half.
That makes it a costly way to filter dust.
Separate filters avoid it entirely.
When does the carbon expire first?
In clean air with a real gas load.
Pressure drop stays low and signals nothing.
The filter keeps running with spent carbon.
Nobody notices until odour returns.
The interval must come from calculation.
Do not wait for the gauge.
When should a combination filter be chosen?
When only one filter position exists.
That is the honest justification.
Retrofits into single-track plant qualify.
Compact units with no room qualify.
Where two positions exist, use two filters.
Each is then changed on its own signal.
How is the change interval set?
From the shorter predicted life of the two.
Estimate carbon life from concentration and airflow.
Estimate particulate life from dust loading.
Change on whichever comes first.
Record both estimates for review.
Adjust after the first year of experience.
Does it cost more in pressure drop?
Yes, both sections add resistance.
The fan must have that available.
Retrofits are where this bites.
Airflow falls across the system if not.
Check available static before specifying.
Measure rather than assume.
Can the two sections be separated?
Generally not, and that is the point.
They are bonded into one frame.
Some designs offer replaceable carbon inserts.
Those recover much of the waste.
Ask whether that option exists.
It changes the economics considerably.