Devices to measure pressure in a building?

[hyperboneious]

Can anyone out there recommend a device for measuring the pressure difference between the outside environment and the inside of a building? I was told to look at Magnehelic gauges but i'm not sure which range of pressures to get.

Thanks
-J

 

[MikeHalloran]

If the building exists, rig up a quickie water manometer and measure the actual pressure difference. Buy the Magnehelic with a range just larger than that.

Without transducers or alarm contacts, Magnehelics are pretty cheap. I'd buy a size up and a size down, too.



Mike Halloran
Pembroke Pines, FL, USA

 

[dvd]

You can gauge how much pressure by noticing how hard the doors are to open. Negative 1 inch of water gauge will make a door hard to open. It is like having an inch deep of water in a pan setting on a horizontal door and trying to open it. Unless you have a lot of fans drawing air out of the plant I would bet on 1 inch water gauge or less.