The three-stage MD 1 VARIO-SP diaphragm pump with its variable speed drive system attains significantly higher pumping speed and a better ultimate vacuum than the corresponding fixed speed pump. The brushless 24V DC motor (maintenance-free) enables easy integration of the pump into other equipment and operation independent of line voltage. The pump is particularly silent and vibration-free, and has an outstanding lifetime of its diaphragms and valves. For exceptional chemical resistance of the pump´s internal flowpath it is also available as a chemistry design version (MD 1C VARIO-SP).
| Weight | 4.2 kg |
| Manufacturer | BRAND (BrandTech Scientific) |
| Items supplied | Pump completely mounted, ready for use, with 2 m cable without plug and with manual. |
| Protection class IEC 60529 | IP 20 |
| Upper ambient temperature (operation) | 40 °C |
| Lower ambient temperature (operation) | 10 °C |
| Dimension B in mm | 143 mm |
| Max. pumping speed 50 Hz | 1.8 m 3 /h |
| Max. pumping speed 60 Hz | 1.0 cfm |
| Ultimate vacuum | 2 mbar / 1.5 torr |
| Ultimate vacuum with gas ballast | 4 mbar / 3 torr |
| Number of heads | 4 |
| Number of stages | 3 |
| Lower ambient temperature (storage) | -10 °C |
| Upper ambient temperature (storage) | 60 °C |
| Max. back pressure (abs.) | 1.1 bar |
| Inlet connection | Hose nozzle DN 8-10 mm |
| Outlet connection | Hose nozzle DN 8 mm |
| Rated motor power | 0.064 kW |
| Dimension L in mm | 235 mm |
| Dimension H in mm | 175 mm |
| Noise (sound pressure level) in dBA at 50 Hz or 1500 rpm/62% (VARIO)/1500 rpm (VARIO-SP)/12500 Upm (VACUU·PURE®) | 37 dBA |
| ATEX conformity | II 3/- G Ex h IIC T3 Gc X Internal Atm. only |
| NRTL certification | Yes |
| Rated mains voltage range 1 | 24 V |
| Mains frequency 1 | DC |
| Minimum motor speed VARIO in min -1 | 200 min -1 |
| Maximum motor speed VARIO in min -1 | 2400 min -1 |