Safety and monitoring systems for oil-fired boiler installations

摘要

A safety and monitoring system, especially for an oil fired boiler installation, comprising a valve unit 22 for fitting in a feed path 24, 26 from an oil storage tank 16 to a boiler 14, a boiler temperature sensor unit 28 and a remote unit 70. The valve unit shuts off the flow of oil from the tank to the boiler when the temperature measured by the senor unit exceeds a predetermined value. The valve unit also includes a pressure sensor for determining the pressure of oil in the feed path and a transmitter for transmitting a wireless signal dependent on the sensed pressure which is received by the remote unit where an indication is provided. Also described is a method of calibrating the system and a shape calibration which depends on the shape of the tank so that the indication provided by the remote sensor shows the volume of fuel in the tank.