Gateway™ ATR Flow Through Top Plate
7
4. Alignment of the
Gateway™ ATR Flow
Through Top Plate
Th
e Gateway™ ATR Flow Through Top Plate is to be installed onto
the optical unit (GS11170) of the Gateway™ ATR Accessory for
operation in the study of flowing or static liquids at room temperature
conditions. The Flow Through Top Plate should be optimised for its
energy light throughput from a particular alignment of the mirrors on
the optical unit when installed for use.
If the Gateway™ ATR Accessory (as the Kit GS11165) is available for
use please follow the instruction manual supplied (2I-11165-4) for the
alignment procedure to optimize the liqht energy throughput of the ATR
system on your particular spectrometer using either the Trough Top
Plate (GS11166) or Flat Top Plate (GS11133) assembly as supplied.
The input and output mirror settings for their rotation and tilt angles will
be established on the optical unit (GS11170) from the alignment
procedure using either of these two Top Plates.
When subsequently placing the Flow Through Top Plate onto the
optical unit as a replacement for either the Trough (GS11166) or Flat
(GS11133) Top Plate assembly, a signal throughput will be registered,
but it is possible the mirrors in the optical unit may require slight re-
adjustment for an optimum throughput to be established in use of this
alternative Flow Through Top Plate. Therefore, follow the alignment
procedure with the Flow Through Top Plate in position to obtain the
best throughput energy signal for the spectrometers system.
Note:
If just the Gateway™ optical unit (GS11170) and a Flow
Through Top Plate are available to use, unless the optical unit
has been pre-aligned to register some energy throughput with a
Top Plate in position, then it may be difficult to gain an optimum
alignment using the FTIR spectrometer systems energy source
and detection system. A rough pre-alignment is to be
established with the optical unit and Flow Through Top Plate in
position using a visible light source such as the Laser Alignment
Accessory (P/N GS24500).
