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DESIGNED & OPTIMISED EXCLUSIVELY FOR
FOURIER TRANSFORM
RAMAN SPECTROMETERS


OPERATING INSTRUCTIONS
Z AXIS SAMPLE ROTATOR
(SERIES SR5)

PRINCIPLES OF OPERATION

The sample rotator is designed to examine samples held in shortened NMR tubes. The tubes are held from above and rotated by a motor gearbox system, very similar to the SR 1 sample rotator. The entire sample and motor are mounted on a stage which is translated vertically by a second motor gearbox and a lever system. The speed of rotation and the periodicity of the vertical movement are controlled electrically from the power supply. The amplitude of the vertical movement can be adjusted in steps.

INSTALLATION

  1. Open the carrying case. Remove excess foam packing. Discard.
  2. Remove the rotator from the carrying case. Check that it fits into your instrument.
  3. Fill an NMR tube about 12mm deep. Slide into the chuck on the unit. Note that the sample is held with an ‘O’ ring.
  4. Unpack the height setting jig. Plug the unit into the power supply. Set at very low speed. Using the jig, check that the powder sample remains in height range throughout its vertical movement. The top surface coincides with the laser beam in your Nicolet instrument.
  5. Increase/decrease the amplitude of vertical movement in steps. Remove the screw and brass cylinder from the operating arm. Fit into a hole of your choice.
  6. Fit the rotator into the spectrometer.
  7. Pass the cable through the light trap. Plug into the Ventacon Power Supply. One of the knobs will control the rotational speed. The other will control the periodicity of vertical movement.

NOTES

  • MOTORS When running the motors will whine. This is normal.
  • ROTATIONAL SPEED Run experiments at full speed for optimum results.
  • TRANSLATIONAL VELOCITY Run experiments at half velocity to optimise results.

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Ventacon 2007