| DG-1 | DG-2 | DG-3 | DG-4 |
| Mixing Stages | 1 stage | 2 stage | 1 stage | 2 stage |
| Gas Supply | 6 l/min air at 0.075MPag and -75°Cdp | 8 l/min air at 0.075MPag and -75°Cdp | 6 l/min air at 0.075MPag and -75°Cdp | 6 l/min air at 0.075MPag and -75°Cdp |
| Gas Output | 1 to 5 l/min air at 0.5 to 1 barg |
| Filter | Particulate filter |
| Saturator | Polycarbonate and porous polyethylene sinter |
| Heating | Finned heating elements 500 W, fan circulation | Finned heating elements 300 W, fan circulation | Finned heating elements 500 W, fan circulation | Finned heating elements 500 W, fan circulation |
| Power supply | 220/240 V, 50 Hz or 100/120 V; 60 Hz |
| Storage temperature | +5 to +40°C (with saturators empty) |
| Operating temperature | +18 to +24°C |
| Enclosure | 19" sub-rack x 6U high x 340 deep | 19" sub-rack x 12U high x 400 deep | 19" sub-rack x 6U high x 340 deep | 19" sub-rack x 12U high x 340 deep |
| Weight (approx) | 20 kg | 9kg | 25kg |