schematic diagram of automatic boiler pressure automatic alarm

Simple Smoke Detector Alarm Circuit Diagram

Jul 19 2017 · Circuit Diagram of this Smoke Detector Project is given below: In this circuit we have used an MQ2/MQ6 Smoke Or Gas Sensor Module for detect smoke present in the air. A BC547 NPN transistor is used to to drive buzzer whenever it detects smoke. A 10K pot is also used for calibration.

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Automatic Level Control Systems | Spirax Sarco

The pressure inside the boiler is further reduced and a proportion of the boiler water will flash to steam. The flashing of the boiler water plus the increased heat input as the burners turn up to maximum means that the boiler water will contain even more steam bubbles and its density will be further reduced.

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