A small amount of liquid
fluorescent dye is added to a circulating fluid system that is being
inspected for leaks. The system is then run for a short time to allow
the dye to mix and circulate with the host fluid.
dye/fluid mixture escapes with the host fluid wherever there is a leak
and glows a bright yellow/green when inspected with a high-intensity
ultraviolet or UV/blue light lamp. This method is extremely effective
in locating even the smallest, most elusive leaks, as well as multiple
Fluorescent Leak Detection
Applications (open and closed loop)
- Lubrication systems
- Hydraulic systems
- Air conditioning and refrigeration systems
- Cooling control and hydrostatic pressure systems
- Fuel systems
- Hydraulic systems are supposed to leak
- Dyes cost too much
- Hard to implement in large systems
- Fast, easy and accurate
- Finds all leaks—the first time, every time
- Reduces labor costs
- Perfect for preventive maintenance
- Environmentally friendly
- Improves working conditions
- Decreases equipment downtime
- Increases efficiency of machinery operation
Tanks often have a separate holding area where the oil is cooled.
Therefore, inject the fluorescent dye into the dispensed area to ensure
- When put into large tanks, the dye should first be diluted with the oil so it quickly mixes.
determining dye dosage, always base it on the capacity of the system,
including lines and tank. In addition to the tank capacity, there is a
significant amount of oil located in the lines.
- Develop a dye service card specific to each application.
- Include leak checking into your regular maintenance program.