User's Guide ______________________________________________________________________  
28 __________________________________________________________________ M210667EN-C 
 
  1104-088 
Figure 3  Transmitter Unit LTT111 with PWD Forward Scatter 
Sensor 
Both these units contain a similar mast construction with an inner and 
outer mast tube. The measurement unit of the transmitter and the receiver 
is mounted to the inner mast tube. All other parts of the measurement 
head are attached to the Support Unit which is mounted to the outer mast 
tube. The parts can be seen in Figure 4 on page 29.