Refrigerated centrifuge Sigma 4-5KL
Refrigerated centrifuge Sigma 4-5KL IVD
11 Appendix
Version 06/2020, Rev. 1.2 of 28/04/2022
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Translation of the original operating manual, part no. 0703602
→
11.3 Acceleration and deceleration curves
Linear curves are numbered in the direction of increasing acceleration
(from right to left).
The deceleration curves are inverted images of the acceleration curves and
are assigned the same numbers. An exception is curve 0. It decelerates
brakeless (spin-out).
In general, the runtime, until the set speed is reached, depends on the
moment of inertia of the rotor.
Linear curves
The slope of the fixed acceleration curves defines the time that is required
to accelerate the rotor by 1,000 rpm.
Curve 9 is a special case compared to the other curves. The centrifuge
accelerates with maximum power. The runtime, until the set speed is
reached, depends solely on the moment of inertia of the rotor.
Linear curve no.
Slope
0
4 [rpm/sec]
1
6 [rpm/sec]
2
8 [rpm/sec]
3
17 [rpm/sec]
4
25 [rpm/sec]
5
33 [rpm/sec]
6
50 [rpm/sec]
7
100 [rpm/sec]
8
200 [rpm/sec]
9
1.000 [rpm/sec]
Fig. 40: Slope of linear curves
Fig. 41: Diagram of linear curves
