ABB PGC2000 Process Gas Chromatographs 2002 2005 2007 5007
Instrument Air
Instrument air is used for the purge of the electronics
housings, the oven heater and to operate the chromatography
valves. Normally instrument air should be oil free with a dew
point of -40°C. However, if instrument air is used to supply FID
Burner air (see below) via an Air Clean-up Unit, then the Total
Hydrocarbons should be less than 100 ppm and Methane less
than 10ppm.
Burner Air
Air to support FID’s may be supplied either by an air clean-up
unit or from cylinders. Cylinder air should be of ISA Hydrocarbon Free Grade (Breathing Quality) with hydrocarbon
content<1ppm and dew point less than -40°C. In addition,
cylinder air may be used for FPD support. Air Clean-up Units
are not suitable for use with FPD’s since they convert the
hydrocarbons in the air to carbon dioxide and water, which is
detrimental to the FPD.
Carrier Gases
The most commonly used carrier gases are Hydrogen,
Nitrogen and Helium. For Flame Photometric Detectors only,
Air can be used in specific applications. The required purity
of these gases varies with the application; the lower the levels
of components being measured, the higher the carrier gas
purity necessary. Other factors affect the purity required, for
example, Molecular Sieve columns are de-activated by Carbon
Dioxide and Water.
Specifications
Power: Hot, Neutral, Ground
Voltage: 100 VAC (+15, -6 VAC), 120 VAC ± 10%, 230 VAC ± 10%
Frequency: 50/60 Hz ± 10%
Power consumption:
PGC2000 and PGC5000 series: 1200 VA Startup, 900 VA Steady-State Operation
PGC2002, PGC2005, PGC2007, PGC5007: 1800 VA Maximum, 1725 VA Typical (Typical, varies with installed options)
Instrument Air
Supply pressure:
PGC2000 and PGC5000 series: 414 kPa (60 psig) minimum
PGC2002 or 2005: 552-690 kPa (80-100 psig)
PGC2007 and PGC5007: 414 kPa (60 psig) minimum
Flow rates:
PGC2000, PGC2007, PGC5000, PGC5007:
Start-up Purge: 214-242 L/min (7.6-8.6 ft3/min) at 20°C, all purge types
Steady State Purge: 127-147 L/min (4.5-5.2 ft3/min) at 20°C, all purge types
PGC2002, PGC2005:
Start-up Purge: 378 L/min (13.4 ft3/min)
Steady State Purge: 310 L/min (11 ft3/min)
628 L/min (22.25 ft3/min) During Vortex Cool-down (If required)
A backup, instrument grade air cylinder, Size A1, is required to cool the Temperature
Programmed Ov
