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Michell Instruments
Michell Instruments DG Series Dew-Point Generators
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Michell DG2/3/4: dew-point generators; to −75 °Cdp; 1–5 Nl/min; mixing stages. RFQ.
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Key parameters
Series Models
DG2, DG3, DG4 (and VDS3 companion)
Dg3 Humidity Range
−40 to +20°Cdp (−40 to +68°Fdp); 1-stage mixing
Dg2 Dg4 Humidity Range
−75 to +20°Cdp (−103 to +68°Fdp); 2-stage mixing
Gas Output
1 to 5 Nl/min (2.1 to 10.6 scfh) @ 0.5–1 barg
Gas Supply Dg3
6 Nl/min air @ 0.75 barg and −75°Cdp (typical)
Gas Supply Requirement
Oil-free dry gas <50 ppmV (<−48°C atmospheric dew point); max ~10 barg
Fits dew-point generation for calibration where you need a Michell Instruments DG Series. Mixing generators covering DG3 (−40 to +20 °Cdp, 1-stage) and DG2/DG4 (−75 to +20 °Cdp, 2-stage) with gas output about 1 to 5 Nl/min at 0.5–1 barg from oil-free dry supply under 50 ppmV.
Key advantages
- Models — DG2, DG3, DG4 (VDS3 companion)
- DG3 — −40 to +20 °Cdp; 1-stage
- DG2/DG4 — −75 to +20 °Cdp; 2-stage
- Output — About 1–5 Nl/min @ 0.5–1 barg
- Supply — Oil-free dry gas <50 ppmV
Typical applications
- Dew-point sensor cal.
- Hygrometer references.
- Lab humidity generation.
Selection guide
- DG3 vs DG2/DG4 range
- Gas supply dryness
- Flow need
Common mistakes
- Wet supply gas.
- Overpressure beyond ~10 barg.
- Wrong stage for target dp.
When to RFQ / what to tell us
- Model/flow.
- Quantity, ship-to.
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Specs
| Spec | Value |
|---|---|
| SKU | 46127 |
| Brand | Michell Instruments |
| Model | DG Series Humidity Generator |
| Product type | Humidity Generator |
| Series models | DG2, DG3, DG4 (and VDS3 companion) |
| DG3 humidity range | −40 to +20°Cdp (−40 to +68°Fdp); 1-stage mixing |
| DG2/DG4 humidity range | −75 to +20°Cdp (−103 to +68°Fdp); 2-stage mixing |
| Gas output | 1 to 5 Nl/min (2.1 to 10.6 scfh) @ 0.5–1 barg |
| Gas supply DG3 | 6 Nl/min air @ 0.75 barg and −75°Cdp (typical) |
| Gas supply requirement | Oil-free dry gas <50 ppmV (<−48°C atmospheric dew point); max ~10 barg |
Documents
FAQ
Q: Lowest class? A: −75 °Cdp on DG2/DG4.
Q: Output flow? A: About 1–5 Nl/min.
Q: What should I send for a quote? A: Model/flow, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Series Models | DG2, DG3, DG4 (and VDS3 companion) |
| Dg3 Humidity Range | −40 to +20°Cdp (−40 to +68°Fdp); 1-stage mixing |
| Dg2 Dg4 Humidity Range | −75 to +20°Cdp (−103 to +68°Fdp); 2-stage mixing |
| Gas Output | 1 to 5 Nl/min (2.1 to 10.6 scfh) @ 0.5–1 barg |
| Gas Supply Dg3 | 6 Nl/min air @ 0.75 barg and −75°Cdp (typical) |
| Gas Supply Requirement | Oil-free dry gas <50 ppmV (<−48°C atmospheric dew point); max ~10 barg |
| Heating | Finned heating elements 300–500 W with fan circulation (model-dependent) |
| Power Supply | 220–240 V 50 Hz or 100–120 V 60 Hz |
| Operating Temperature | +18 to +24°C |
| Storage Temperature | +5 to +40°C (saturators empty) |
| Dg3 Enclosure Weight | 19 in sub-rack × 6U × 340 mm deep; 9 kg (20 lb) |
| Dg2 Enclosure Weight | 19 in sub-rack × 12U × 400 mm deep; 20 kg (44 lb) |
| Connections | Swagelok 6 mm stainless bulkhead GAS IN / GAS OUT (DG3) |
| Control | Manual flow mixing (DG2/DG3); push-button presets + RS232 (DG4) |