Chapter 25. -NEW DEVELOPMENTS IN NAVAL ENGINEERING 



27.347 



Figure 25-15. — Propulsion Section. 



different functions may be displayed simulta- 

 neously. 



Data Logger Section 



The data logger section (fig. 25-18) consists 

 of plant performance data logging, alarm scan- 

 ning, and bell logging equipment. The plant per- 

 formance logging equipment can be set up 



to print at regular time intervals and on demand, 

 with continuous scanning of all sensor points. Ab- 

 normal conditions are printed in red by the per- 

 formance typewriter (shown on the left in fig. 

 25-18). The bell log typewriter (on the right) re- 

 cords each engine order telegraph signal along 

 with time and date, location of throttle control, 

 throttle control wheel position, and shaft RPM as 

 stated previously. 



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