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Ultraprobe 9000 Loss Guess-Timator

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To help quantify and cost the compressed air leaks that you find when using the Ultraprobe 9000, please follow the instructions below to locate and roughly measure the air leakage. We have also provided a chart further down the page to estimate the annual cost of each leak.

Unfortunately, calculating the cost of a leak isn't an exact science. It is worth keeping in mind that factors such as instrument sensitivity, leak orifice configuration, moisture, pressure and turbulence can all significantly affect your results.

To locate and roughly measure a leak, please use the following procedure...
  • Using the scanning module, conduct broad scanning and pinpoint the leaks
  • Once a leak has been identified, fit the rubber focusing probe over the scanning module
  • The tip of the rubber focusing probe should be approximately fifteen inches away from the leak, which allows us to determine the leak rate
Please note that the values presented below (and used by the Loss Guess-Timator itself) are not stated as factual CFM measurements. These Loss Guess-Timators are provided solely for convenience, and should only be used as a general guideline.

 Related link: Ultraprobe 9000

Loss Guess-Timator Back to the top...

Please note that the calculations used below were last updated in March, 2008.

Sensitivity (dB) 100 PSI 75 PSI 50 PSI 25 PSI 10 PSI
10 0.5 0.3 0.15 0.1 0.05
20 0.8 0.9 0.5 0.3 0.15
30 1.4 1.1 0.8 0.5 0.4
40 1.7 1.4 1.1 0.8 0.5
50 2.0 2.8 2.2 2.0 1.9
60 3.6 3.0 2.8 2.6 2.3
70 5.2 4.9 3.9 3.4 3.0
80 7.7 6.8 5.6 5.1 3.6
90 8.4 7.7 7.1 6.8 5.3
100 10.6 10.0 9.6 7.3 6.0
Enter CFM result Annual leak cost (£)
As an example, this is the calculation we are using for the above figure in bold: 4.9 (CFM) x 1.8 (pence) / 100 (£) x 24 (hours) x 365 (days). The estimated leak cost per year would therefore be £772.63.

 As a rule of thumb: 1 kW per hour produces 5 CFM at a cost of 9 pence (or 1.8 pence per CFM)

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Should you have any questions, or if you would like to discuss anything that you have seen on this page, then please do not hesitate to get in touch.

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