Model ZAG-6L
DESCRIPTION
The California Analytical Model ZAG6L has been designed to operate
continuously 24 hours/day, 7 days/week to provide a pure air source of
“zero air” for use in analytical gas analysis
equipment. The ZAG6L
completely eliminates the inconvenience and high costs of precision
blended zero air cylinders. This is particularly important with
instrumentation which, in addition to zero calibration air, requires
pure air for burner combustion flame ionization detectors and ozone
production for chemiluminescence analyzers. In these types of
applications requiring a continuous supply of zero air, payback for the
ZAG is usually less than six months. The generator is quiet and easy to
install requiring only AC power and a source of compressed air. The
ZAG6L will continuously provide up to 6 liters per minute of zero air
and requires no consumable supplies or routine maintenance. The unit
will meet the specifications for zero air requirements for Inspection
and Maintenance emissions test programs.
SPECIFICATIONS
REDUCTION METHOD: Oxidation and Ozonification
OUTPUT FLOW RATE: Maximum of 6.0 liters/min.(Free flow at atmospheric
pressure)
OUTPUT PRESSURE: 15-60 psig (103-414 kPa). Based on inlet pressure
INPUT AIR: 7.0 liters/min. @ 60-125 psig (414-862 kPa)
MAXIMUM BACKGROUND CONCENTRATION:
50 ppm NOx
200 ppm THC (as methane)
200 ppm CO
1,500 ppm CO2
20 ppm SO2
MAXIMUM OUTPUT CONCENTRATION:
1.0 ppm NOX
1.0 ppm THC
1.0 ppm CO
1.0 ppm CO2
1.0 ppm CH4
1.0 ppm SO2
SHUT OFF ALARM: Loss of compressed air triggers alarm & shuts
off
voltage
FRONT PANEL: Status indicating lights (neon)
OUTPUT DEW POINT: –100°F (–73°C)
AMBIENT TEMPERATURE: 5 – 45°C
WARMUP TIME: 15 minutes
FITTINGS: ¼" tube
POWER REQUIREMENTS: 115 (±10%) VAC 60 Hz, 300 watts ;
115/230 VAC 50/60 Hz
DIMENSIONS: 26" H x 17" W x 5" D (660mm x 432mm x 127mm)
RELATIVE HUMIDITY: Less than 90% RH
WEIGHT: 46 lbs. (21 kg)
Specifications subject to change without notice
FEATURES
- Less expensive than cylinder
- Flow rate 6 liters/min.
- Convenient wall mount
- Pure air output <1 ppm: CH4 -
THC - CO - NOx - CO2 -
SO2
- No consumable supplies
- No service required
OPTIONS
- External buffer tank (3 liter)
- Nema 4 enclosure
- Tabletop mounting rack
- Inlet particulate and coalescing filters
- Inlet and outlet pressure regulators
METHOD OF OPERATION
The California Analytical Model ZAG6L Zero Air Generator utilizes the
principle of oxidation and ozonification to provide a clean and dry
supply of pure air for use in analytical instrumentation. The customer
supplied compressed air source is introduced to the ZAG6L which is then
purified for use in analytical gas monitoring equipment. The ZAG
reduces a contaminated air supply to provide pure air with less than 1
ppm carbon monoxide, carbon dioxide, total hydrocarbons (including
methane), and of oxides of nitrogen. The reduction meets the 1 ppm pure
air specification even with background concentrations of 500 ppm C THC,
200 ppm CO, 1,500 ppm CO2 and 50 ppm NOx. The
contaminated air source
is first passed through an oxidizer to reduce all hydrocarbons
including methane. The air is then passed through an ultraviolet
ozonator to convert any NO to NO2 and finally to
one of two switched
tubes containing a molecular sieve for NO2, H2O,
CO and CO2 removal.
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