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Pressure Swing Dryers Dry Gas Generation using
‘Pressure Swing’ Principle |
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The PSD-Series is designed specifically for calibration applications. It utilises two desiccant columns of molecular sieve and operates on the pressure-swing principle. The columns are used alternately and a small quantity of dry air is bled from the in-service column to re-generate the line column.
Moisture is absorbed at elevated pressure whilst re-generation occurs at atmospheric pressure, hence the term 'pressure-swing'. The columns are automatically switched on a two minute cycle. The PSD-2 dryer operates continuously and desiccant life is normally in excess of five years. Using oil-free compressed air at 7 barg the PSD-2 delivers up to 10 Nl/min of air at a dew point of better than -75°C.
Caratteristiche del prodotto
- Ultra stable
- Maintenance free
- Two ranges: <1 ppm and < 10 ppb
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Specifiche Tecniche |
| PSD-2 |
| Type |
Twin column desiccant, pressure
swing |
| Desiccant |
4 Angstrom Molecular sieve bead |
| Timer |
Motorised cam |
| Gauges |
Bourdon type |
| Exhausts |
Sintered bronze silencers |
| Gas Inlet |
10 l/min at 70 to 100 psig; oil
free and liquid water free |
| Gas Outlet |
7 l/min (max) at stp less than 1 ppmV
(= less than -75°Cdp)
Outlet pressure 10 psig |
| Power Supply |
100/120 or 220/240 V AC, 50/60 Hz |
| Operating Temperature |
+5 to +35°C |
| Storage Temperature |
-40 to +35°C |
| Construction |
Aluminium case, 19” sub-rack 6U x
350mm deep |
| Weight |
12.5kg approx |
| PSD-4 |
| Type |
Twin column desiccant, pressure
swing |
| Desiccant |
4 Angstrom Molecular sieve bead |
| Timer |
Motorised cam |
| Gas Ports |
Gas inlet - stainless steel 6mm
Swagelok® bulkhead union tube fitting
Gas outlet - stainless steel
¼” Swagelok® bulkhead union VCR fitting |
| Gas Inlet |
20 l/min at 70 to 100 psig; oil
free and liquid water free (better or equal to -40°Cdp) |
| Gas Outlet |
10 l/min (max) at stp less than 13 ppbV (-100°Cdp) |
| Filter |
Millipore Wafergard IIF Micro Inline,
sealed type, retention rating of 0.003 µm, greater than 99.999% |
| Power |
220/240 V AC, 50/60 Hz |
| Operating Temperature |
+10 to +40°C |
| Storage Temperature |
-40 to +50°C |
| Construction |
IP66 (NEMA 4) GRP wall mounting
enclosure (700 x 500 x 270mm)
All gas wetted components 316 stainless
steel |
| Weight |
27kg approx |
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Applicazioni |
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