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I work with manual leak locating and have an H2000 detector. Do you have any good ideas or experiences on how to become even more efficient? |
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When should I choose a tracer gas method instead of pressure decay? |
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How often must I change the sensor? |
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What does the tracer gas mix, 5% Hydrogen in Nitrogen, cost and how much will I consume? |
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I work with manual leak locating and have an H2000 detector. Do you have any good ideas or experiences on how to become even more efficient?
Answer:
For certain applications you can speed up the process by using a bit of plastic foam, 5mm thick and of open cell type. If you apply the foam around for example a tube joint, it is often enough just sticking the probe into the foam at one point and get a gas indication even if the leak is on the other side of the tube. This is of course dependant on the dimension of the tube in question. You will have to try this specifically for your case. The reason why this happens is that the foam does not hinder but actually protects the gas from being vented away by the normal movements (draft) of the air. The gas seeps throughout the foam which will give you a gas indication whereafter you can remove the foam and start locating the leak. The foam actually gives you a fast and early indication if it is worth while to search the entire joint. Try it out and please let us know what you think about it.
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When should I choose a tracer gas method instead of pressure decay?
Answer:
a) when you are looking for leaks smaller than what pressure decay can find.
b) when you have variations in temperature in your test objects
c) when you have soft objects
d) where you risk having leaking connections
e) when you also want to locate your leaks
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How often must I change the sensor?
Answer:
Normally twice a year at continuous use. But in many cases less than once a year. Itīs like answering "How long will a light-bulb last?." The sensor is not used up in the same sense as a light bulb but it ages and may become insensitive over time. It all depends on how much you use it.
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What does the tracer gas mix, 5% Hydrogen in Nitrogen, cost and how much will I consume?
Answer:
The Hydrogen gas-mix costs about EURO 0,005 per liter. Helium costs about 4-5 times more. How much you will have to use depends on what you are using it for. You can calculate the gas per test by knowing the internal volume of the object and the pressure used at the test. Then you just multiply by the number of test per day/month/year and you will get your consumption figure. We have customers that have saved more money on gas the first year than the total cost of the Hydrogen instrument investment, by changing from helium to hydrogen.
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