Final answer:
The purpose of a pressure gauge in a fire extinguishing system is to measure and monitor the pressure inside the system and ensure it is at an appropriate level for effective operation.
Step-by-step explanation:
A pressure gauge in a fire extinguishing system is used to measure and monitor the pressure inside the system. It helps to ensure that the pressure is at the appropriate level for the system to function effectively. If the pressure is too low, the fire extinguishing system may not be able to deliver the necessary amount of extinguishing agent to put out the fire. On the other hand, if the pressure is too high, it can put excessive strain on the system, potentially causing damage or malfunction.
The pressure gauge provides a visual indication of the pressure level, allowing operators to take appropriate action if necessary. For example, if the pressure is low, they may need to refill or recharge the system. If the pressure is high, they may need to release some of the pressure to prevent damage. Overall, the purpose of a pressure gauge in a fire extinguishing system is to ensure the system is operating safely and effectively.