Building a diy pressure testing device for IP rating…
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Building a diy pressure testing device for IP rating tests.
Hi all, i wasn't too sure where to ask this question, and I assumed there would be enough professionals here that someone might have some insight.
I work in the AV industry, and some of our devices are IP rated. After they have been opened up for repairs, maintenance etc they have ports on which allow the device to have a low pressure (less than 3 psi) put in to it, the idea being if the pressure goes down before the user lets it out, there is a leak in the waterproofing somewhere.
The manufacturer devices to do this test cost upwards of £1000, yet the parts required are in theory simple. And we have very few IP rated devices like this, so spending that amount of money is not really in the picture at the moment.
I have an manemometer which can measure the desired range down the the required accuracy (0.05kPA) and an assortment of fittings, valves, hoses and a pump (mostly using NPT threads and 8mm barbs)
However, there appears to be a leak in the tester itself, as when it is all assembled and put under pressure with no device on the test end, the pressure will slowly reduce to zero. All threads have the tape on currently, and I cannot find any leaks with soapy water or submerging the tester. However I am assuming that because the pressure is so low and the sensitivity so high, a really tiny air leak can be enough to invalidate the test.
When isolating just the manemometer, pressure remains stable, so i can only assume the leak is on one of the threaded or barb connections.
Does anybody have any advice when building something like this?
#diy
Hi all, i wasn't too sure where to ask this question, and I assumed there would be enough professionals here that someone might have some insight.
I work in the AV industry, and some of our devices are IP rated. After they have been opened up for repairs, maintenance etc they have ports on which allow the device to have a low pressure (less than 3 psi) put in to it, the idea being if the pressure goes down before the user lets it out, there is a leak in the waterproofing somewhere.
The manufacturer devices to do this test cost upwards of £1000, yet the parts required are in theory simple. And we have very few IP rated devices like this, so spending that amount of money is not really in the picture at the moment.
I have an manemometer which can measure the desired range down the the required accuracy (0.05kPA) and an assortment of fittings, valves, hoses and a pump (mostly using NPT threads and 8mm barbs)
However, there appears to be a leak in the tester itself, as when it is all assembled and put under pressure with no device on the test end, the pressure will slowly reduce to zero. All threads have the tape on currently, and I cannot find any leaks with soapy water or submerging the tester. However I am assuming that because the pressure is so low and the sensitivity so high, a really tiny air leak can be enough to invalidate the test.
When isolating just the manemometer, pressure remains stable, so i can only assume the leak is on one of the threaded or barb connections.
Does anybody have any advice when building something like this?
#diy
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