Active Motif 53081 Handbuch - Seite 9

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C. Calibration of the Platform Counter

The counter on the platform needs to be set to an

appropriate "zero" point to enable you to return the

platform to the same height consistently once you

have determined the appropriate height for your

purposes. We suggest that the "zero" point be set at

the bottom of the drive screw, meaning the lowest

point to which the platform can be cranked.

To set the platform to the bottom of the drive screw,

turn the crank clockwise until the platform base no

longer continues downward; then, turn the dial on the

analog counter clockwise to "0000" (right). From this

point on, a one unit increase in the counter equals a

0.1 mm increase in the height of the platform.

Note:

If the platform goes too low, it may

not move upward when you begin to

turn the crank. Gently lift underneath

the platform as you crank to engage

the gears completely.

D. Alignment of the Platform Stand

The platform stand can be adjusted in both the horizontal (x-y) and vertical (z) planes, ensuring

that the probe is centered in the tube and that its tip is at the chosen depth in the sample. The

provided Alignment Tool is used to set an approximate alignment for the tube and probe. It is

included because when a tube is placed in a Tube Cooler, you cannot see the probe tip or its

position relative to the bottom of the tube.

The Alignment Tool is used to make initial settings, which

are refined using a tube in the Tube Cooler. (This prevents

possible damage to the probe that could occur if you

simply raised the platform without knowing how deep in

the tube the probe will go.)

You should have already placed your converter/probe in

the bracket and set the counter to "zero", as described

above. To begin, lower the platform and place the

Alignment Tool in the hole on the stand. To lower the

platform, simply press in the latch located between the

counter and the crank (right). After placing the Alignment

Tool in the stand, move the entire platform up to the top

of the rod, against the Stop Collar.