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Perma Pure Sample Conditioning Systems

Nafion® ambient sample conditioning devices such as the Ambi-GASS (high flow) or ACES (< 2 lpm) will protect the sensor and enable years of accurate data flow

Ambient Applications: Nafion® dryers used in ambient applications protect electrochemical (EC) cells from an excess of condensing water which can impair readings or ruin sensors. EC cells and other sensors used for these applications require moderate relative humidity but cannot with-stand soaking conditions found inside closed tanks or in very humid environments.

• Oil/Gas Production, Coal Handling, Manufacturing - Safety sensors used in personal or area monitors to detect levels of: • H2S and CH4 (Waste treatment, gas production) • Phosgene, Cl2 and HCN (Manufacturing) • CO (Coal handling)
• Wastewater Treatment Facilities Monitoring of tank or digester gases: • CH4 • H2S • O2
• Traffic Safety & Chemical Warfare • CO Sensors (Tunnels and Subways) • Toxic gas (area monitors)

ACES

ACES systems prepare gas samples for analysis by electro-chemical sensor (EC) analyzers when the sample is too hu-mid for analysis but not condensing at ambient temperature. EC analyzers suffer reliability problems when the sample is either too wet or too dry. ACES systems reduce sample humidity to the ideal range for EC (typically 20-80%RH), while also removing any dust or dirt particles. Download brochure.

Ambient Applications:

• Ambient sampling up to 99% RH
• 20-80% RH sample outlet
• Accepts flow rates up to 2 lpm
• 0.1 micron particulate filter

Ambi-GASS

Ambi-GASS systems prepare non-condensing, ambient temperature gas samples for analysis. The Nafion dryers in the units provide full corrosion resistance and very high sample selectivity, so water-soluble gases are not lost. Ambi-GASS enclosures are fully sealed and corrosion-resistant so they can be mounted in harsh environments.

• Ambient sampling up to 99% RH
• Yields sample dew points as low as –25°C
• Accepts flow rates up to 25 lpm
• 0.1 micron coalescing/particulate filter
• No electrical power required; In-trinsically safe in hazardous areas

GASS-2040

The GASS-2040 conditions high-flow, high-moisture samples, eliminating acid mists or ammonia if present. It processes the toughest samples, with flows up to 25 liters per minutes and moisture contents in excess of 50%. The GASS-2040 can be mounted anywhere, including on the stack flange with an integral stack probe, which eliminates heated sample lines.

3 Temperature zones

• First zone—Sample passes through a heat exchanger, then through a coalescing particulate filter to remove particles down to 0.1 micron. Acid mists, if present, are coalesced then re-moved by an automatic drain. If ammonia is present, it is re-moved by a proprietary ammonia scrubber.
• Second zone– Sample passes through a Nafion dryer. The initial portion of the dryer is heated above the sample dew point to prevent condensation.
• Third zone—The sample passes through the remainder of the dryer, further reducing the dew point down as low as –25°C, depending upon dryer model selected and sample flow rate. This zone operates at ambient temperature.

When an integral sampling probe is added, the GASS-2040 can be mounted right on the stack flange. The probe filter and blow-back assembly are mounted inside along with a temperature controller and blowback timer. Conditioning the sample immediately after leaving the stack improves analytical integrity, eliminates the need for expensive heated sample lines, and reduces calibration times. Download brochure.

• Suited for high acid concentrations
• Optional built-in sample pump
• Achieves low sample dew points
• Stainless steel NEMA 4X enclosure
• Preserves water-soluble analytes

GASS Module

The GASS-Module is a cost-effective approach to gas sample conditioning that removes water, particulates and coalescable liquids from gas samples while retaining ana-lyte gases. The GASS-Module is a heated sampling system that brings maximum performance at minimal cost to systems integrators and OEM manufacturers of gas analysis systems by deferring all control to the central system, eliminating any electronics in the module and reducing the size and complexity of the device. Download brochure.

• Complete sampling system
• Dries continuously
• Samples up to 30% water by volume
• No moving parts
• Yields sample dew points as low as –35°C

Micro-GASS

Micro-GASS systems prepare gas samples for analysis by electrochemical sensors when the samples are hot and too humid for analysis, typically condensing at room temperature. Download brochure.

• Heated sampling for electrochemical sensors
• Yields 30-70% RH samples
• Accepts flow rates up to 1 lpm
• Built-in pump draws sample to sensor
• 01 micron disposable filter

Mini-GASS

The Mini-GASS 1228 offers many of the same proprietary sample conditioning qualities as the GASS-2040 in a smaller package for lower flow applications up to 10 lpm.The Mini-GASS comes with an optional integral probe and blow-back system for stack mounting, which eliminates the need for heated sample lines.The Mini-GASS comes in a heated NEMA 4X enclosure to protect components and ensure maximum drying power. Like all Nafion® dryers and systems, the Mini-GASS requires dry purge air at least two times the sample flow rate. Download brochure.

• Dries samples up to 10 lpm
• 3 dryer choices for a range of conditions
• High Impact plastic NEMA 4X box
• Nafion® drying for low final dew point
• Optional integral probe for stack mounting
• Optional Z-purge for Class I Div II environments.

Mini-GASS-1220

For mounting in climate-controlled, low dust envi-ronments, the Mini-GASS-1220 offers the same drying power as the MG-1228 in a lower cost package with only one heat zone. The lower portion of the Nafion® dryer extends below the heated enclo-sure to create a lower temperature “polishing” chamber. Download brochure.

• Dries samples up to 10 lpm
• 3 choices of Nafion® dryers for a range of conditions
• High Impact plastic NEMA 4X box
• Optional Z-purge for Class I Div II environments

Zero-Air Generator

Bring "Zero" air to the point of use without handling bulky and hazardous compressed gas cylinders. The Zero-Air generator produces up to 18 liters per minute of purified air with just the flip of a switch. Compounds treated include CO, NOx, SOx, water vapor, hydrocarbons, acid vapors, odors, and bacteria. Best of all, the unit is totally self-contained in a convenient portable case. Portability is enhanced by its light weight (27lbs), build-in carrying handle, and lack of protrusions outside the case. An internal Nafion gas dryer dries the air to a 0C dew point or better, depending on pressure and flow settings. A fixed purge stream is produced by expanding a portion of the dried gas exiting the dryer.

The Zero-Air generator only requires connection to standard 110 VAC power to operate. The internal compressor will supply up to 18 liters per minute of compressed air. The maximum pressure of the air is internally regulated to 30 psig. A panel mounted flow meter and pressure gauge indicate compressor output. Download brochure.

Rack-Mount Wall Coolers

Perma Pure can build a complete rack-mounted sampling system using any size Baldwin cooler to suite your application. Systems include sample pump, water slip sensor and your choice of impingers: stainless steel (best heat transfer), glass, Kynar® or Durinert-coated stainless steel (best corrosion resistance). Download brochure.

• Compact Design
• Incorporates any size cooler
• Kynar filter and water slip sensor
• Complete sampling system with sample pump
• Rack mounted for easy installation

Portable Products for the Stack Testers

Baldwin's Portable Sample Conditioning Systems are complete, lightweight, integrated stack gas sample conditioner packaged in a convenient yet rugged enclosure with carrying handle. All models include a Baldwin Thermo-Electric Cooler, sample pump, peristaltic drain pump, and flowmeter. Testers' Choice models include in-line sample filter with 2-micron ceramic element and water slip sensor.