CPDS-1000: Canister Pressure Drop System
What's
the Pressure Drop Across Your Carbon Canister?
The
APS CPDS-1000 test stand is designed for manual control
of pressure and flow for testing carbon canister pressure
drop values. This system tests load and purge modes by utilizing
a compressed air supply and a vacuum pump. Test functions
of the CPDS are:
- Load
or fill mode simulation by applying pressure to the canister
load or tank port.
- Purge
mode simulation by applying vacuum to the purge port.
- Canister
weight determination on the optional scale.
The
CPDS can be used for the following tests:
- Purge
Vacuum Drop
- Measures
the total allowable purge vacuum drop across the carbon
canister.
- Loading
Pressure Drop
- Diurnal
(Enhanced Evaporative) - measures the total pressure
drop across the carbon canister.
- Refueling
(ORVR) - measures the total allowable air and tank
tube pressure drop across the carbon canister.
- Purge
Restriction
- Measures
the total allowable purge vacuum restriction across
the carbon canister for enhanced evaporative and ORVR.
Optional
features:
- Fully
automatic control and data acquisition system
- Full
integration with APS C2K (Canister Conditioning System)
- Fixed-in-place
or portable units
Technical
Specifications
- System
power requirements -
- Voltage:
120VAC 60Hz, Single Phase
- Current:
5 AMPS
Capabilities
- Maximum
purge flow rate: 100 slm
- Maximum
fill flow rate: 100 slm
- Maximum
vacuum reading: -25 in. wc
- Maximum
pressure reading: +25 in. wc
- Scale
capacity: 7.2 kg with 0.1 g resolution
Accuracy
- Mass
flow meter: +/- 1% of full scale
- Differential
pressure transmitters: +/- 0.25% of full scale
Purge
vacuum pump
- Rating:
4 cfm at -14 in. Hg
Compressed
air
- Maximum
pressure: 120 psig
- Minimum
pressure: 90 psig at 5 scfm
Operating
Temperature
- Maximum
ambient temperature: 105°F
Plumbing
connections
- Compressed
air: 1/2" OD
- Exhaust
vent: 1" PVC
Canister
connections
- Pressure
load port and pressure transducers: 1/4" OD, stainless
steel
- Vacuum
purge port: 3/8" OD, stainless steel
- Mass
flow meter ports - 1/2" OD, stainless steel
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