FB™-Series Inertial Bypass Filter

FB™-Series Inertial Bypass Filter

FB-Series bypass filters are inertial separation filters for high particulate load applications. Used upstream of fine particulate filters, FB filters greatly increase the life and performance of particulate and coalescing filters. Flow can be passed through under pressure or pulled through under vacuum. Perma Pure offers a compressed air-driven eductor and a heating system as options.

Inertial Bypass Filter

Large volumes of high-velocity, particulate laden gas pass straight through the filter element (see illustration). Sample is drawn from the bypass flow through a port which is perpendicular to the main flow. Pulled off the bypass stream, the sample is filtered by the mesh or porous filter element. The bulk of the particulate passes directly through the length of the filter element due to its high velocity and inertia, which prevents particulate from being diverted by the pull of the sample outlet port. Any particles that are pulled to the sample outlet are filtered by the element. The high velocity flow also continuously flushes the filter element, reducing pore clogging.

For applications involving a high temperature, wet sample, Perma Pure offers bypass filter heating systems. This involves a simple electrical resistance strip heater mounted in a piece of steel channel. The temperature is controlled with a factory pre-set mechanical thermostat which switches electrical power on and off to maintain the desired setting.

Applications for Perma Pure FB-Series bypass filters can be found in both CEMS and process monitoring applications. In addition to reducing high particulate, these filters can be installed to reduce the response time of analyzers. A pump or vacuum eductor is used to pull the fast bypass sample through the filter thus reducing the response time when the sampling system is located some distance from the sample point. Since analyzers generally only require a sample flow of 1-2 lpm, the time required to pull the sample from the sample point to the analyzer would be excessively long without this fast bypass loop. This increases the life of conditioning systems. By virtue of its design the Perma Pure Bypass Filter, which is sometimes called an inertial filter, serves to eliminate large amounts of particulate and tends to be self cleaning.

FB-Series filters are available in two models: FB-625 and FB-1000. Flow rating for the filters is dependent on the particulate level of the sample. In general the FB-625 Series filters are suitable for sample flows of up to 10 liters per minute while the FB-1000 Series filters can handle higher flows.

All connections are female NPT

All seals are viton

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Sample Gas Dryers, Humidifiers and Conditioning Systems Product Portfolio

Gas Sample Dryers Perma Pure offers Nafion® based tube and shell style dryers (requiring a dry counterflow gas) and dryers open to atmosphere for a wide range of flow rates up to 40 lpm. MD Series Gas Sample Dryers – Single tube Nafion® dryer for flow rates to 4 l/m MD-R Series Gas Sample Dryers –  Single tube Nafion®dryer with rotating ends, for flow rates to 4 l/m MD-700 Series Large Diameter Dryer – for Dust, Particulate and Aerosol Analysis MDH-Series Heated Gas Sample Dryer – Heated single tube Nafion® dryer for flow rates to 4 l/m PD-Series Gas Sample Dryers – Multiple tube Nafion® dryer for flow rates to 40 l/m ME-Series Moisture Exchangers – Single tube Nafion® dryer open to atmosphere for flow rates to 4 l/m	Medical Breath Dryers and Breath Sampling Lines Perma Pure offers Nafion® based breath dryers and standard breath gas sampling lines made from PE, PVC, or coextruded PE/PVC, available with a wide range of connection interfaces. ME-Series Medical Dryers / Moisture Exchangers – Single tube Nafion® dryer open to atmosphere for breath flow rates to 2 l/m Medical Sample Lines and Breath Gas Sampling Lines – A wide range of custom sample lines with or without a Nafion® dryer built in
Gas Humidifiers Where applications require a gas stream to be humidified. Perma Pure’s  Nafion® based Gas humidifiers are the ideal method using either gas or water to provide the humidification. MH-Series Humidifiers  – Single tube Nafion® humidifier for flow rates up to 10 l/m using DI water as the humidification source FC-Series Humidifiers – Multiple tube Nafion® dryer for flow rates up to 10,000 l/m. This product line was developed for fuel cell humidification applications in either gas to gas or water to gas modes.	Nafion® Based Sample Conditioning Systems Perma Pure’s Nafion®–based Sample Conditioning Systems’ advantage is the ability to remove moisture from the sample stream in the vapor phase, preserving the components to be analyzed – particularly water soluble gases such as SO2 and NOx among others. GASS 2040 Gas Sampling System MiniGASS Gas Sampling Systems MicroGASS Gas Sampling System Indi-GASS Modular Gas Sampling System AmbiGASS Gas Sampling System ACES Gas Sampling System SDS Supplemental Nafion Drying System
Baldwin Sample Gas Coolers Baldwin Classic Thermoelectric Gas Sample Coolers M115 Classic Series Thermoelectric Cooler M325 Classic Series Thermoelectric Cooler M425 Classic Series Thermoelectric Cooler Baldwin 5210 Classic Series Thermoelectric Cooler Baldwin 8210 Classic Series Thermoelectric Cooler Baldwin 20410 Classic Series Thermoelectric Cooler Baldwin SO3 Aerosol Removal Cooler model 10410 Baldwin eCool Thermoelectric Gas Sample Coolers e5300 eCool Series Thermoelectric Cooler e5400 eCool Series Thermoelectric Cooler e5500 eCool Series Thermoelectric Cooler e5800 eCool Series Thermoelectric Cooler e5900 eCool Series Thermoelectric Cooler e5500XP eCool Series Thermoelectric Cooler e5800XP eCool Series Thermoelectric Cooler e5900XP eCool Series Thermoelectric Cooler SDS Supplemental Drying System iCool OEM Gas Sample Cooler	Perma Pure and Baldwin Filters, Scrubbers and Accessories AS Series Ammonia Scrubber FB Series Inertial Bypass Filter FF 250 Series Filters HD Series Heatless Dryers DM Series Desiccant Dryers Portable Zero Air Generator
Baldwin Sample Conditioning Systems and Other Products Baldwin Complete Sample Conditioning Systems Baldwin Tester’s Choice Portable Sample Conditioning System Baldwin eCool 5400 Portable Sample Conditioning System Baldwin Flow Control Drawers RATAMATION Software	Baldwin Dilution and Extraction Probes Baldwin Model 45 Dilution Probe Baldwin Hazardous Area Extraction Probes Baldwin General Purpose Extraction Probes