Hettich 4701 - ‎7.1.5 Temperature (for centrifuges with cooling)‎; ‎7.1.6 Relative centrifugal force, RCF‎; ‎7.1.7 Relative centrifugal force RCF and centrifuging radius RAD‎

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Rev.: 05 / 11.2023
AB4701en_SA
Software operation
6. Press the [START] button.
🡆 The setting is stored.
‘Store Settings ...’ is displayed briey
‘-> Settings’ is then displayed.
7. Press the [OPEN/STOP] button once to exit the ‘Settings menu’
or
Press the [OPEN/STOP] button twice to exit the ‘Machine Menu’ .
7.1.5
Temperature (for centrifuges with cooling)
1. Press the [T/°C] button.
🡆
The parameter T/°C or T/°F is displayed.
2. Use the rotary knob to set the desired value.
3. Press the [T/°C] button or the [START] button.
🡆 The setting is transferred to the indicator.
7.1.6 Relative centrifugal force, RCF
The relative centrifugal force RCF is dependent on the speed and the centri-
fuging radius.
The relative centrifugal force RCF is stated as a multiple of the acceleration
due to gravity (g).
The relative centrifugal force RCF is a dimensionless numerical value and is
used to compare the separation and sedimentation performance.
RCF = Relative Centrifugal Force
RPM = speed
r = centrifuging radius in mm = distance from the centre of the axis of
rotation to the bottom of the centrifuge tube.
7.1.7 Relative centrifugal force RCF and centrifuging radius RAD
The relative centrifugal force RCF is dependent on the centrifuging radius
RAD. The centrifuging radius must be set before setting the relative centri-
fugal force.
1. Press the [RCF] button repeatedly until the ‘RAD’ , ‘RCF’ parameters
are displayed and the value of the ‘RAD’ parameter is displayed in
brackets á ñ.
🡆 The [RCF] button lights up.
2. Use the [Rotary knob] to set the desired centrifuging radius.
The value of the RCF adjusts automatically when the centrifuging
radius is changed.
3. Press the [RCF] button.
🡆 The value of the ‘RCF’ parameter is displayed in brackets á ñ
4. Use the [Rotary knob] to set the desired ‘RCF’ .