Instrument Expert
Original factory packaging
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Instrument Expert
Original factory packaging
Service Hotline：
(+86)010-52867771
Updated:2025-03-13
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PSD2 Product Manual PSD4 Product Manual PSD2 and PSD4 Datasheet
Pressure Swing Drying Principle for Continuous Operation
Features
Excellent long-term stability
Maintenance free except for a desiccant change once every 5 years
Completely self-contained
Low power consumption
Pressure Swing dryers provide a source of very dry compressed air for use as a zero gas in humidity calibration systems, or for general laboratory applications.
The Michell PSD Series Pressure Swing Dryers use two columns filled with 4? molecular sieve desiccant, which are used alternately on a two-minute switching cycle. The PSD dryers are designed to operate continuously, using a small proportion of the dried air, to regenerate the offline column - generally giving desiccant life in excess of five years. This type of heatless regeneration also uses significantly less energy than a 'heated' type of dryer.
Specifications
| Model | PSD2 |
PSD4 (Standard) |
PSD4-HFV (High flow volume) |
PSD4-HPO (High pressure output) |
| Performance | ||||
| Gas output | ||||
| Flow | 7 Nl/min (14.8 scfh) | 30 Nl/min (63.6 scfh) | 90 Nl/min (109.7 scfh) | 30 Nl/min (63.6 scfh) |
| Pressure | 4.8 barg (70 psig) |
User-settable up 8 barg (116 psig) |
||
| Moisture content | <1ppmv | <13.8ppbv | ||
| Input Requirements | ||||
| Gas supply | ||||
| Flow | 10 Nl/min (21.2 scfh) | 45 Nl/min (95.4 scfh) | 105 Nl/min (222.5 scfh) | 45 Nl/min (95.4 scfh) |
| Pressure | 5...7 barg (70...100 psig) | 6...10 barg (87...145 psig) | ||
| Moisture content | Oil and liquid water-free | <16ppmv | ||
| Electrical Input | ||||
| Power | 100...115 OR 220...240 VAC, 50/60Hz | 100...240VAC 50/60Hz | ||
| Power connection | IEC socket | |||
| Environmental Conditions | ||||
| Operating temperature | +5...+35 °C (+41...+95 °F) | +10...+40 °C (+50...+104 °F) | ||
| Storage temperature | -40...+35 °C (-40...+95 °F) | -40...+50 °C (-40...+122 °F) | ||
| Mechanical Specifications | ||||
| Type | Twin column desiccant, pressure swing | |||
| Desiccant | 4 ?ngstr?m Molecular sieve bead (4-8 mesh) | |||
| Amount required (approx.) | 2 Kg | 3.5 Kg | ||
| Timer | Mechanical cam | Programmable relay | ||
| Gas connections | ||||
| Inlet | Swagelog ® ?" | ?" VCR Swagelok® Tube | ||
| Outlet | Swagelog ® ?" | ?" VCR Swagelok® | ?" VCR Swagelok® | ?" VCR Swagelok® |
| Filters | ||||
| Outlet | None | Millipore Wafergard IIF Micro Inline (sealed type) with PTFE membrane element rated at >99.999% retention of 0.003μm particles | ||
| Vent | None | Bonded glass microfiber rated at >99.999% retention of 0.1μm particles | ||
| Construction | Rack mount: 19" x 6U x 324mm (12.8") | 304 stainless steel wall mounting enclosure: 800x600x300mm (31.5x24x12”) | ||
| Weight | 12.5kg (27.5lbs) | 30Kg (66lb) | 35Kg (77lb) | 32Kg (70lb) |
Suitable Applications
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