Beckman Coulter Airfuge, Инструкция по эксплуатации

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* Relative Centrifugal Field (RCF) is the ratio of the centrifugal acceleration at a specified radius
and speed ( r
ω
2 ) to the standard acceleration of gravity ( g ) according to the following formula:
where r is the radius in millimeters,
ω
is the angular velocity in radians per second
(2
π
RPM /60), and g is the standard acceleration of gravity (9807 mm/s 2 ). After substitution:
† Instrument operation at gauge pressures below 20 psig (138 kPa) may cause rotor instability.
‡
Normally only nonconductive pollution occurs; occasionally, however, a temporary conduc-
tivity caused by condensation must be expected.
RCF
r
ω 2
g
--------- =
RCF 1.12 r
RPM
1000
------------
⎝ ⎠
⎛ ⎞
2
=
Description
1-7
SPECIFICATIONS
Only values with tolerances or limits are guaranteed data. Values
without tolerances are informative data, without guarantee.
Speed range . . . . . . . . . . . . . . . . . . . . . . . . 80 000 to 110 000 (±5 000) rpm
Maximum relative centrifugal field*. . . . . . . . . . . . . . . . . . . . . 199 000
×
g
Air pressure:
Air pressure at ultracentrifuge for
routine operation . . . . . . . . . . . . . . . . . . . . . . . . . 30 psig (207 kPa)
Air pressure at filter for routine operation . . . . . . . . 42 psig (290 kPa)
Air pressure drop across filter . . . . . . . . . . . . . . . . . . 12 psig (83 kPa)
Maximum air pressure at ultracentrifuge . . . . . . . . . 75 psig (517 kPa)
Minimum air pressure at ultracentrifuge
for operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 psig (138 kPa) †
Maximum air flow rate at 30 psig (207 kPa) . . . . . . 0.0015 m
3
/s (3.5 cfm)
Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . to 5 hours in 5-minute increments
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . or continuous (hold)
Approximate acceleration time . . . . . . . . . . . . . . . . . . . . 30 to 60 seconds
Approximate deceleration time . . . . . . . . . . . . . . . . . 2
1
/
2
to 5
1
/
2
minutes
Rotor temperature . . . . . . . rotor temperature is always a few degrees above
. . . . . . . . . . . . . . . . . . ambient temperature; the instrument can be run
. . . . . . . . . . . . . . . . . . . . . . . . . . in a cold room for lower temperatures
Dimensions
Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 cm (11 in.)
Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 cm (15 in.)
Height. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 cm (8 in.)
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.4 kg (23 lb)
Finishes
Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . coated polycarbonate
Top surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . urethane paint
Other surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . general purpose paint
Electrical requirements
60-Hz instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 VAC
50-Hz instrument . . . . . . . . . . . . . . . . . . . . . . . . 100 or 220–240 VAC
Electrical supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class I
Installation (overvoltage) category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II
Pollution degree. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
‡