Leak detector

A backflow prevention assembly comprising:

• a backflow prevention device;
• a leak detector assembly coupled to the backflow prevention device having a first sensor for sensing discharge from the backflow prevention device to generate leak signal;
• and
• a printed circuit board for:
• receiving the leak signal from the leak detector assembly;
• determining a comparison of the at least one signal to a predetermined threshold;
• and generating a first alarm based upon the comparison,
• wherein:
• the first sensor does not require movement to generate the leak signal;
• the first alarm is a low flow error signal for tracking by maintenance personnel;
• and
• the leak detector assembly includes:
• a housing defining a passageway for receiving a fluid;
• and a flap assembly coupled to the housing, the flap assembly including a flap mounted in the passageway such that when flow of the fluid moves the flap, a second sensor is activated by flap movement to generate a second alarm, which is a high flow error signal generated by the printed circuit board indicating immediate attention is required by the maintenance personnel.

A backflow prevention assembly comprising:

• a backflow prevention device for preventing cross-contamination between an upstream potable water source and a downstream non-potable water source by discharging backflow to a drain;
• and
• a leak detector assembly coupled to the backflow prevention device before the drain for sensing the discharged backflow from the backflow prevention device, the leak detector assembly including:
• a housing defining a passageway for the discharged backflow;
• and a flap assembly coupled to the housing,
• wherein the flap assembly includes:
• a flap mounted in the passageway such that when flow of the discharged backflow moves the flap to open the passageway, the leak detector assembly generates a high flow error signal;
• and
• a sensing element on the flap to determine a presence of the discharged backflow without movement of the flap to generate a low flow error signal based on a low flow of the discharged backflow with the flap having a normal position at an angle with respect to a direction of flow of the discharged backflow for preventing puddling of the discharged backflow on the flap.

A backflow prevention assembly comprising:

• a backflow prevention device for preventing cross-contamination between an upstream potable water source and a downstream non-potable water urce by discharging backflow to a drain;
• a leak detector assembly coupled to the backflow prevention device before the drain for sensing the discharged backflow from the backflow prevention device, wherein the leak detector assembly includes:
• a housing defining a passageway for receiving the discharged backflow;
• and a flap assembly coupled to the housing, the flap assembly including a sensing element on a flap to determine a presence of the discharged backflow without movement of the flap to generate a low flow error signal based on a low flow of the discharged backflow;
• and
• a screen for disbursing energy of the discharged backflow prior to contact with the flap.