Perceptible movement on a water gauge

[Masood]

I was taught 0.25mbar is perceptible or gauge readable movement. On the Facebook group a few people are adamant it's 0.5mbar. Am I wrong? Has it changed?

 

[ambrosia]

nope its 0.25 mbar

tightness test is billy basics

 

[Masood]

nope its 0.25 mbar

tightness test is billy basics

Cheers mate, was 100% sure but when quite a few people said 0.5 I started questioning myself! Yeah, this is bread and butter stuff, I'm shocked at people not knowing..

 

[Rickster123]

It's Facebook what do you expect?!

 

[Sharp Point]

Thats why i won't entertain it ( facebook) or any other chuffin social media.

 

[hammers4spanner]

I wouldn't entertain that Facebook mob , just go on it stir up trouble then leave .

 

[Rickster123]

I wouldn't entertain that Facebook mob , just go on it stir up trouble then leave .

Much like here then hammers??:smilewinkgrin:

 

[AlexGas]

I was taught 0.25mbar is perceptible or gauge readable movement. On the Facebook group a few people are adamant it's 0.5mbar. Am I wrong? Has it changed?

IGE/UP/1B
TEST CRITERIA
...
Note:
A movement of 0.25 mbar or less on a fluid (water) gauge is considered to be “not perceptible”. Therefore, if the gauge is seen to move, it can be inferred that the pressure within the installation has altered by more than 0.25 mbar.
It follows that, where a gauge that can register perceptible movement of less than 0.25 mbar i.e an electronic gauge, is used, the pass criteria of “no perceptible movement” has to be considered to be a maximum of 0.25 mbar except for those gauges that read to one decimal place when “no perceptible movement” is considered a maximum of 0.2 mbar.

 

[AlexGas]

Any fluid (water) gauge shall be capable of being read to 0.5 mbar and any electronic gauge shall be capable of being read to 0.1 mbar.

 

[Masood]

IGE/UP/1B
TEST CRITERIA
...
Note:
A movement of 0.25 mbar or less on a fluid (water) gauge is considered to be “not perceptible”. Therefore, if the gauge is seen to move, it can be inferred that the pressure within the installation has altered by more than 0.25 mbar.
It follows that, where a gauge that can register perceptible movement of less than 0.25 mbar i.e an electronic gauge, is used, the pass criteria of “no perceptible movement” has to be considered to be a maximum of 0.25 mbar except for those gauges that read to one decimal place when “no perceptible movement” is considered a maximum of 0.2 mbar.

Any fluid (water) gauge shall be capable of being read to 0.5 mbar and any electronic gauge shall be capable of being read to 0.1 mbar.

The guy arguing the toss is working to UP/1 AND 1A apparently. On domestic...

 

[AlexGas]

The guy arguing the toss is working to UP/1 AND 1A apparently. On domestic...

You got the commercial documents up in your dropbox:
https://www.dropbox.com/sh/toq5i0zsvw78na9/AADO7DxDvIctrolmTuKnXX4za/IGEM documents?dl=0
Talking commercial, I think the dude got a bit confused between – NOT PERCEPTABALE MOVEMENT and GUAGE READABLE MOVEMENT.







I'm not commercial, just reading the docs.

 

[Pssst]

The guy arguing the toss is working to UP/1 AND 1A apparently. On domestic...

Yes ,,i was thinking that myself....of course with UP1/1A your even less certain as to whether something is really gas tight and so they then introduce the concept of nominal tightness

Being a bit blind i always make sure my guages are spotless and i bleached them internally every week and refill with nice clean water. I also use a small magnifying glass for close up monitoring of the meniscus.

 

[ambrosia]

Being a bit blind i always make sure my guages are spotless and i bleached them internally every week and refill with nice clean water. I also use a small magnifying glass for close up monitoring of the meniscus.

Try the blue U-gauge liquid, it stops it going moldy and makes the level much easier to see