Adjust jet ?

wdk450

Well-known member
Khalsey and all:
According to this weblink on making your own U manometer, the markings should be 1/2" apart as the gas is pressing one side of the column of water down, and the other side of the column of water up. Your manometer might be wrong by a factor of 2. Here is the link: http://www.rverscorner.com/manometer.html

Here is one of my post from last year that you might be interested in.
You can easily make a water column pressure gauge. I made mine 24 inches tall and made hash marks on the board 1 inch apart. I then fastened a 5/16 tygon tubing on the board in a U shape. My tubing is 5 foot long. To use fill the U with water to about 11 or 12 inches then lift the range burner cover and slide the other end of tubing over burner orfice and turn that burner to high. Count the hash marks between high and low point of water in U and that will be the water column pressure. You must have another propane user on at the same time to remove static pressure such as oven or furnace.//heartlandowners.org/attachment.php?attachmentid=12007&d=1297716353&thumb=1​
 

Willym

Well-known member
You can't go wrong if you just measure the difference in height between the two legs of the "U". The one in the link uses a zero mark and if you start there you only measure from the zero on one side of the U. It's simpler and probably more accurate to just measure the difference.

Khalsey and all:
According to this weblink on making your own U manometer, the markings should be 1/2" apart as the gas is pressing one side of the column of water down, and the other side of the column of water up. Your manometer might be wrong by a factor of 2. Here is the link: http://www.rverscorner.com/manometer.html
 

wdk450

Well-known member
Michael & Kelly (and All):
The Dwyer U manometer you suggest is of the right series, but not the right length. The -8 manometer reads +/- 4 inches of water: The correct pressure setting for the LP gas regulator is 11 inches of water. Therefore the smallest size Dwyer U manometer of this series you can use is the 1221-24-W/M. Here is a link to the Dwyer products page:
http://www.dwyer-inst.com/Product/Pressure/Manometers/FluidFilled/Series1221-1222-1223/Ordering

Note that the item description says how much MERCURY is needed to fill each manometer. THIS IS WRONG ( and enviromentally unfriendly - maybe illegal - all of the mercury thermometers and blood pressure devices are supposed to be gone from hospitals by now). We are measuring inches of WATER, not inches of MERCURY, which are 2 different pressure scales (like PSI and KPA). You can fill these with plain water, or the special colored water Dwyer sells.

You can buy one on Amazon for 12 bucks. Might as well just buy one. It would cost you almost that much to make one.


http://www.amazon.com/Dwyer-Flex-Tu...82/ref=sr_1_22?ie=UTF8&qid=1329788627&sr=8-22
 
Top