A range of complete sample conditioning systems for extractive gas analysers. Designed for process measurements and CEMs.

Extractive gas analysers require sample gas which is dry, dust free, at the correct pressure and flow rate. Correct conditioning of the sample gas will ensure accurate measurement and reduce maintenance requirements and cost.

Perma Pure complete, integrated systems offer:

Removal of water (liquid and vapour) and dusts
Compact, integrated units 'ready to use'
Uses well-proven Nafion^™ technology to reduce sample dewpoints to -10C
No design required, reducing system design costs
Proven on many applications worldwide
From a company that is a leader in sample conditioning
Easy to install and integrate with sample probes and gas analysers
Wide product range, from systems from low-cost CEMs to high accuracy, complex, process gas analysers
Only requires electrical power and clean, dry, compressed air (see Heatless Desiccant Dryers from Perma Pure)

Nafion technology

Nafion is a Dupont co-polymer that is highly selective in the removal of water. The water moves through the membrane wall and evaporates into the surrounding air or gas in a process called perevaporation. This process is driven by the humidity gradient between the inside and the outside of the tubing.

Water is removed as a vapor, so water solube compounds, such as the acid gases, are not removed from the sample gas. This makes Perma Pure sample conditioning systems the choice for applications such as monitoring the emissions from large combustion proccesses.

Sample conditioning systems

ACES		Sample conditioning system for gas analysers using electrochemical cells (ECS) for flow rates <1.5 l/min ACES systems reduce sample humidity to the ideal range for ECS (typically 30-70%RH), whilst also removing any dust or dirt particles present. Incorporating a Perma Pure Nafion membrane dryer, disposable 0.1 micron pre-filter and integral sample pump the ACES systems offer good corrosion resistance to sample components and very high selectivity so water soluble gases are not lost. The RH of 50 to 70% of the sample gas extends the life of electrochemical cells by ensuring the electrolyte is not dehydrated prematurely. System for extractive sampling of non-condensing gases Sample gases up to 99% RH Integral pump Low maintenance Extends life of measuring cells Price competitive NEMA-4X enclosure (~IP65 Applications include ambient monitoring, tunnels, water treatment plants. Read more...
Micro-GASS		Conditioning of gas samples for analysis by electro-chemical sensor (ECS) analysers when the sample is hot and wet Operating as a self-contained unit, the Micro-GASS incorporates a built-in sample pump to draw the sample gas through a cooler, an 0.1um filter to remove liquid water and a Nafion gas dryer to remove water vapour. The dried sample then flows to the sensor where the measurement is made. After exhausting from the ECS, the gas passes through a needle valve and expands, causing a reduction in vapour pressure. It then re-enters the dryer to be used as a purge gas. The Micro-GASS a self-regenerating and transportable conditioning system, requiring only electrical power. Flow rate 1.5 l/min. For hot saturated gas samples Integral pump Low maintenance Suitable for corrosive gases NEMA-4X enclosure (~IP65) Applications include monitoring of boilers and combustion plants, CEMs, scrubber exhausts Read more...
Mini-GASS		High performance gas drying system for flow rates <10 l/min The Mini-GASS sample conditioning systems prepares hot, dirty, wet, gas sample streams for high flow, high performance gas analysis applications. The Mini-GASS system will remove particulates, mists and water vapour from a gas stream without the loss of analyte gasses. Options of safety interlocks (to prevent water entering the analysers), electrical or steam heating (for use with flammable gases) and a choice of materials for optimum corrosion resistance. For process and CEMs For highly corrosive gas samples Can be used for analysis of HF, HCl, NOx and SOx without removal of gaes Low maintenance Dew point to -25 degC NEMA-4X enclosure (~IP65) Read more...
GASS-II		For CEMS and Process gas monitoring applications with high levels of contamination for flow rates <25 l/min The high specification GASS-II Systems combines Nafion dryers with a particulate/coalescing filter and all necessary controls to provide a complete gas sample conditioning system to remove high levels of dust, acid mists and liquid and vapour water. The GASS-II systems can process sample streams with flow rates of up to 25 l/min and water levels of up to 75%. Even at these high water levels, a properly configured system will reduce the water content to a dew point -25 degC without loss of analyte gases. Sample gases which are at high flow rate and hot, wet and corrosive Gives excellent speed of response Heated sampling system to prevent condensation Options: Steam heating Purging for flammable gases Heatless dryer eliminates requirement for instrument air Read more...
Mini-GASS Probe	Awaiting Picture Please return later	A stack mounted sample conditioning system with probe A complete stack mounted mount unit with: Integral sample probe Particulate filters Nafion dryer Option of heated blow-back Flow control The Mini-GASS eliminates expensive heated sample lines by performing all the sample conditioning at the probe mounted on the stack. A series of heated filters removes particulates and acid mists and water vapour before the sample is dried. Sample gas connection to a remote analyser is by normal, unheated sample lines. Flow rate up to 10 l/min gives fast response times. Reduces installation cost Eliminates cost of heated lines Nafion dryer removes water to dewpoint as low as -25 deg C Choice of probe material (to 1100 C) and probe lengths to 2m Optional automatic heated blow-back for preventing particulate build-up in sample probe
Ambi-GASS	Awaiting Picture Please return later	Ambient sampling up to 99% RH. Flow rates to 25 l/min Samples ambient gases and dries and filters them for subsequent analysis. Requires no electrical power so is suitable for installation in areas which may contain flammable gases. Self contained unit Removes particulates down to 0.1um Can be installed in areas where flammable gases may be present Nafion dryer technology removes water with high selectivity NEMA-4X weather resistant enclosure (~IP65) Read more...
Porta-GASS	Awaiting information	Awaiting information Please return later
GASS Module		Low cost conditioning units for OEM Minimum system for integration into original equipment. Available only to OEM customers. Contact us for further information.

Contact us for more details, prices and delivery information:

Brochures

Brochures for all systems can be downloaded from Perma Pure here

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Perma Pure^™ is a registered trademark of Perma Pure LLC
Nafion^™ is a registered trademark of E.I. DuPont and Perma Pure LLC

Update 26th Januaru 2005