Description
Features:
The Optima MAX and MAX-E (see Figure 1-1) microprocessor controlled tabletop ultracentrifuges generate high centrifugal forces for a variety of high-speed applications. The instrument design features a variable-frequency induction drive, the thermoelectric temperature control system, self-purging vacuum system, rotor overspeed identification system, program memory that can contain up to ten five-step programs, and a choice of acceleration and deceleration rates.
Manual and programmed operation are available. • In manual operation, you enter the individual run parameters before beginning each run. • In programmed operation, you can duplicate runs quickly and accurately by selecting one of ten programs previously entered into the program memory. Each program can contain up to five steps. User messages and/or audible signals are provided to alert you to conditions that may need attention. An optional feature of the Optima MAX or MAX-E is the RS 232C Interface Accessory, which enables it to be connected to a personal computer. Information about this feature will be supplied upon request.
Specifications:
Only values with tolerances or limits are guaranteed data. Values without tolerances are informative data, without guarantee.
Speed
Set speed:
Optima MAX . . . . . . 5 000 to 130 000 rpm in 1 000-rpm increments
Optima MAX-E . . . . 5 000 to 100 000 rpm in 1 000-rpm increments
Speed control . . . . . . . . . . . . . actual rotor speed, ±50 rpm of set speed
Speed display . . . . . . . . . . . . actual rotor speed in 100-rpm increments above 5 000 rpm and 10-rpm increments at speeds below 5 000 rpm
Time
Set time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . to 99 hours 59 minutes
Time display
Manual operation . . . . . . . . . . . . . . . indicates run time remaining
Programmed operation . . . . . . . . . . . . . . . . time remaining in step
Temperature
Set temperature . . . . . . . . . . . . . . . . . . . . 0 to 40°C in 0.1° increments
Temperature control (after equilibration). . . . . ±2°C of set temperature
Temperature display. . . . . . . . . . . . . . . . . . . . . actual rotor temperature in 0.1° increments
Ambient temperature range . . . . . . . . . . . . . . . . . . . . . . . . . 15 to 35°C
Humidity restrictions. . . . . . . . . . . . . . . . . . . . . . . . <95% (noncondensing)
Vacuum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . below 10 microns (1.34 Pa)
Acceleration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 acceleration profiles—9 slow rates from 0 to 5 000 rpm followed by full acceleration to set speed; or maximum acceleration
Deceleration . . . . . . . . . . . . . . . . . 11 deceleration profiles—10 slow rates n from 5 000 to 0 rpm, including coasting to a stop without brake; or full dynamic braking from set speed
Dimensions
Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73.7 cm (29 in.)
Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58.4 cm (23 in.)
Height. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58.4 cm (23 in.)
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 kg (217 lb)
Ventilation clearances (sides and rear) . . . . . . . . . . . . . . . . 7.6 cm (3.0 in.)
Finishes
Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . coated polycarbonate
Top surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . urethane paint
Other surfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . general purpose paint
Electrical requirements
100-V instrument . . . . . . . . . . . . . . . . . . . 90–110 VAC, 12 A, 50/60 Hz
120-V instrument . . . . . . . . . . . . . . . . . . 100–130 VAC, 12 A, 50/60 Hz
220/240-V instrument . . . . . . . . . . . . . . . . . 198–254 VAC, 6 A, 50 Hz
Maximum heat dissipation into room under
steady-state conditions . . . . . . . . . . . . . . . . . . . . . . 1750 Btu/hr (0.5 kW)
Noise level 0.91 m (3 ft) in front of centrifuge . . . . . . . . . . . . . . . . <60 dBa
Installation category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II
Pollution degree. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
