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Michell Instruments
Michell Instruments PSD2 / PSD4 Pressure Swing Dryers
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Michell PSD2/PSD4: heatless PSA dryers; <1 ppmV / <13.8 ppbV; twin-column. RFQ.
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Key parameters
Dryer Type
Twin-column heatless pressure-swing dryer with 4 Å molecular sieve
Psd2 Output
Up to 7 Nl/min (14.8 scfh); moisture <1 ppmV; outlet ≈0.7 barg
Psd4 Output
PSD4-STD 30 Nl/min; PSD4-HFV 90 Nl/min; PSD4-HPO 30 Nl/min up to 8 barg; moisture <13.8 ppbV
Desiccant Life
Typically >5 years with heatless regeneration
Psd2 Inlet
10 Nl/min at 5–7 barg; oil- and liquid-water-free
Psd4 Inlet
45–105 Nl/min at 6–10 barg; inlet moisture <16 ppmV
Fits dry gas generation for calibration where you need a Michell Instruments PSD2 or PSD4. Twin-column heatless pressure-swing dryers with 4 Å molecular sieve: PSD2 to about 7 Nl/min at <1 ppmV moisture, PSD4 variants to 30–90 Nl/min with moisture under 13.8 ppbV and desiccant life typically over 5 years.
Key advantages
- Type — Twin-column heatless PSA; 4 Å sieve
- PSD2 — Up to ~7 Nl/min; moisture <1 ppmV
- PSD4 — 30–90 Nl/min class; <13.8 ppbV
- Desiccant — Typically >5 years life
- Power — 100–240 VAC class
Typical applications
- Hygrometer cal dry gas.
- Lab dew-point supply.
- Analyzer zero gas.
Selection guide
- PSD2 vs PSD4 flow
- Inlet pressure / dryness
- VAC option
Common mistakes
- Oily inlet gas.
- Liquid water at inlet.
- Wrong inlet flow.
When to RFQ / what to tell us
- Model/flow.
- Quantity, ship-to.
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Specs
| Spec | Value |
|---|---|
| SKU | 46241 |
| Brand | Michell Instruments |
| Model | PSD2 / PSD4 Pressure Swing Dryers |
| Product type | Pressure Swing Dryer |
| Dryer type | Twin-column heatless pressure-swing dryer with 4 Å molecular sieve |
| PSD2 output | Up to 7 Nl/min (14.8 scfh); moisture <1 ppmV; outlet ≈0.7 barg |
| PSD4 output | PSD4-STD 30 Nl/min; PSD4-HFV 90 Nl/min; PSD4-HPO 30 Nl/min up to 8 barg; moisture <13.8 ppbV |
| Desiccant life | Typically >5 years with heatless regeneration |
| PSD2 inlet | 10 Nl/min at 5–7 barg; oil- and liquid-water-free |
| PSD4 inlet | 45–105 Nl/min at 6–10 barg; inlet moisture <16 ppmV |
| Power | PSD2 100–115 or 220–240 VAC 50/60 Hz; PSD4 100–240 VAC 50/60 Hz IEC |
Documents
FAQ
Q: PSD2 moisture? A: <1 ppmV.
Q: Desiccant life? A: Typically >5 years.
Q: What should I send for a quote? A: Model/flow, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Dryer Type | Twin-column heatless pressure-swing dryer with 4 Å molecular sieve |
| Psd2 Output | Up to 7 Nl/min (14.8 scfh); moisture <1 ppmV; outlet ≈0.7 barg |
| Psd4 Output | PSD4-STD 30 Nl/min; PSD4-HFV 90 Nl/min; PSD4-HPO 30 Nl/min up to 8 barg; moisture <13.8 ppbV |
| Desiccant Life | Typically >5 years with heatless regeneration |
| Psd2 Inlet | 10 Nl/min at 5–7 barg; oil- and liquid-water-free |
| Psd4 Inlet | 45–105 Nl/min at 6–10 barg; inlet moisture <16 ppmV |
| Power | PSD2 100–115 or 220–240 VAC 50/60 Hz; PSD4 100–240 VAC 50/60 Hz IEC |
| Operating Temperature | PSD2 +5 to +35 °C; PSD4 +10 to +40 °C |
| Construction | PSD2 19-inch 6U rack; PSD4 304 SS wall enclosure 800×600×300 mm |
| Weight | PSD2 12.5 kg; PSD4 30–35 kg depending on variant |
| Special Features | Self-contained zero-gas source for humidity calibration systems; low power |
| Gas Connections | PSD2 Swagelok ¼ in; PSD4 VCR / Swagelok options with particulate filters |