FTIR Purge Gas Generators

For Dry, CO2-Free Air to 60 lpm

 

FTIR Purge Gas Generator


Compact, regenerative purge gas generators capable of delivering up to 2 SCFM (60 lpm) of dry, CO2-free air at a dew point of -100ºF (-73ºC) and a CO2-content of less than 1 ppm. Ideal for FTIR spectrometer purge and emissions monitoring applications. Units come standard with an inlet particulate filter, inlet coalescing filter, purge mufflers, moisture indicator, wall-mount bracket and outlet filter-regulator assembly. Accessories include sound suppression kit, flow meter and surge tank.

Product Features

  • CO2-free air to less than 1 ppm
  • Ultra-dry air to better than -100ºF/-73ºC dew point
  • Continuous self-regenerative operation
  • Outlet flow capacities to 2 SCFM (60 lpm)
  • Operating pressures of 50 to 150 PSIG (345 to 1000 kPa)
  • Compact, lightweight aluminum construction
  • Low power requirement (35 watts)
  • Standard purge mufflers ensure quiet operation
  • Easy to install and no regular maintenance is required
  • Ideal for laboratory, OEM and point-of-use applications

Typical Applications

  • FTIR spectrometer purge
  • Dilution air for stack gas emissions monitoring (CEMS)

Ordinary compressed inlet air is passed through one layered desiccant bed where the water is removed first, followed by the carbon dioxide. The air then continues to the outlet side of the manifold and on to the application. A portion of the purified air is expanded through an orifice and directed back through the off-line desiccant bed, purging the accumulated H2O and CO2. Every 30 seconds, a solid state timer and two solenoid valves reverse the process. The result is a continuous supply of dry, CO2-free air.

PCDA Operation


12" Towers 20" Towers
Outlet Air CO2 Concentration <1 ppm
Outlet Air Dew Point -100° F / -73° C or better ADP
Maximum Pressure Drop 3 PSID
Maximum Inlet Air Temperature 125° F

Operating PSIG of:
Maximum Flows (SCFM)1
Inlet / Outlet (Purge Orifice Sizing #)
150 2.1 / 1.5 (#15) 4.8 / 3.5 (#26)
125 1.8 / 1.2 (#18) 4.1 / 2.8 (#28)
110 1.5 / 1.0 (#18) 3.3 / 2.2 (#28)
100 1.5 / 0.8 (#22) 3.4 / 2.0 (#32)
90 1.4 / 0.7 (#22) 3.0 / 1.8 (#32)
80 1.2 / 0.6 (#22) 2.5 / 1.4 (#32)
70 1.0 / 0.5 (#22) 2.0 / 1.0 (#32)
60 0.8 / 0.3 (#22) n/a
50 0.6 / 0.2 (#22) n/a
Dimensions 17" H x 11" W x 5" D 25" H x 11" W x 5" D
Weight 12 lbs 20 lbs
Notes:

Sizing information is based on inlet air conditions of +70°F/+21°C

1. For flow rates in liters per minute (lpm), multiply flows in SCFM by 28.3

Ordering Information


FTIR-PCDA Numbering

Notes:

1. See specifications table for purge orifice numbers

2. Unit comes standard with power cord, purge mufflers and moisture indicator


Maintenance Kits


Part No. Description
P011048F15 2-Year Warranty Kit
P011048F24 Annual Maintenance Kit
P200499 Dryer Maintenance Kit (Dryers with ASCO brand valves)
P200499S Dryer Maintenance Kit (Dryers with SKINNER brand valves)


Filters & Elements


Part No. Description Replacement
Element
P010976F2 Inlet Carbon Filter P010657
P010553 Inlet Particulate Filter P010554
P010555 Inlet Coalescing Filter P010556
P010685 Outlet Filter / Regulator P010621
P07327G2 Inlet Filter Assembly (Particulate & Coalescing) P011048F24


Towers


Part No. Description
P07323G21 12" Tower - Black
P07323G46 12" Tower - White
P07323G22 20" Tower - Black
P07323G47 20" Tower - White


Solid State Timers


Part No. Description
P010980F1 110 VAC Timer - Repressurizing
P010980F2 220 VAC Timer - Repressurizing


Solenoid Valves


Part No. Description
P400589DC1 110 VAC Valve
P400589DC2 220 VAC Valve


Solenoid Repair Kits


Part No. Description
P200498 Solenoid Repair Kit (for ASCO brand valves)
P200498S Solenoid Repair Kit (for SKINNER brand valves)


Moisture Indicator


Part No. Description
P200405 Moisture Indicator


Purge Muffler


Part No. Description
P400399 Purge Muffler


Sound Suppression Kit


Part No. Description
P08084 Sound Suppression Kit

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Documentation

FTIR Specification Sheet

Instruction Manual for Compressed Air Dryers / Adsorbers




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