If my vacuum bagging pressure gauge is reading -0.76 bar, but the material handbook states I can use a pressure between 0.2 to 4 bar how do the two correlate?

no idea

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You should be ok with that.

http://en.wikipedia.org/wiki/Bar_(unit)#Absolute_pressure_and_gauge_pressure

maybe this is relevant

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It's strawberry floated.

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Protip: You need to reverse the polarity of the neutron flow

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Thanks for the help guys, but I am non the wiser from any of these answers

You need to hit it with a highly-focussed inverse tachyon beam. You may need to recalibrate your main deflector and divert auxiliary power from the phasers, but it should be doable.

What about the flux capacitor? If that's gone then he's going to have problems with the inner compensating lever.

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The flux capacitor is a triple-redundant system. If all three are gone, then he's got bigger problems to worry about than his compensating lever. A bigger concern is whether the EPS relays can withstand that amount of energy for a sustained period. If they're anything above a Mk V, he should be OK, as they increased the maximum energy throughput by a factor of 12 with that model. That should just about cover it.

I see what you mean. I think given the in-depth diagnosis and subsequent solution to the problem at hand there can be little or no doubt that, in fact, there is only one way to go from here.

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If it's a vacuum pressure you'd assume it's always going to be a negative pressure (else it'd be a blowy machine - technical term), so either the manual is being imprecise and not specifying a negative pressure or it's screwed.

Enough of this sci-fi futurebabble - the man wants a real answer!

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Put it in H!

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I'd recommend an external hard drive.

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The manual is not being very precise. But the manual is likely giving pressure differential link

So the manual states 0.2 to 4 bar and the gauge is giving -0.76 as it is in vacuum, but these negative signs are usually omitted (as explained on that wiki page) so -0.76 is simply 0.76 bar so falls within the range given in the manual.

However I also think I have read gauge pressures give a negative reading and this reading should be subtracted from 1bar (atmospheric pressure) to give the actual pressure in the vacuum which in this case would be 1-0.76 = 0.34 bar

Thoughts?

Or in other words like putting too much air into a balloon [/futurama]

What material is the balloon made out of?

The real question is why are you using a vacuum cleaner with bags in the year of our lord 2012?

?

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Taint

Its looking like the manual is not stating parameters for vacuum.

As the max possible for vacuum is <-1 bar -0.76 we currently do is pretty close to max. Trying to establish the minimum at the minute.