6.6 Alarm Circuit

Discuss the significance of contacts being held in their activated state by a deenergized system.

 

Describe the behavior of this alarm system.

system-7

 

Describe the behavior of the above circuit if a NO pressure switch and a NO temperature switch are placed in parallel with the NC-HO FS1.

 

Describe the behavior of the above circuit if the NC-HO FS1 at the top of the tank is replaced with a NO FS1 at the bottom of a tank.