Patent ID: 11921008
Assignee: nan
Field: Measurement (Instruments)
Classification: CPC G | IPC F  G

Claim 0:
1. A calibration device for use with a normally closed water supply control system that uses a normally closed primary electrically actuated valve and a pressure sensor downstream of said valve, the device comprising:
an inlet conduit, downstream of the primary electrically actuated valve, for diverting water from a main water supply through an orifice;
an auxiliary electrically actuated valve for selectively causing water to flow through the inlet conduit from the main water supply to the orifice;
wherein the auxiliary electrically actuated valve is operable by an electronic control module which is programmed to open said auxiliary electrically actuated valve and measure the time it takes a system pressure of the main water supply to decrease from a first predetermined pressure to a second predetermined pressure based on input from the pressure sensor.