manometer?

manometer?

PostBy: samhill On: Fri Nov 23, 2012 10:50 pm

Don't really know what I was looking at but Lowes had what was called a manometer but looked more like a tire pressure gage & as far as I could tell worked on the same principle. The way it's packaged I couldn't read much but it looked like you have the tubing with a fitting like a tire valve & just put this on to check the draft. It seemed to claim a high accuracy rate but I would have my doubts a lady was buying the last one there for her husband for a wood burner so I was just asking her & didn't get much of a chance to look at it. Just wondering if anyone else has seen or heard of these? I'm pretty sure it was around $10 or less.
samhill
 
Hot Air Coal Stoker Furnace: keystoker 160
Hand Fed Coal Stove: hitzer 75 in garage
Stove/Furnace Make: keystoker/hitzer
Stove/Furnace Model: koker 160/ hitzer 75

Re: manometer?

PostBy: rockwood On: Fri Nov 23, 2012 11:37 pm

I just checked Lowes website and nothing for manometer came up and I've never seen anything like that in Lowes around here.
rockwood
 
Hot Air Coal Stoker Furnace: Stokermatic coal furnace
Hand Fed Coal Stove: Rockwood Stoveworks Circulator
Baseburners & Antiques: Malleable/Monarch Range
Coal Size/Type: Soft coal: Lump and stoker (slack coal)

Re: manometer?

PostBy: WNY On: Sat Nov 24, 2012 9:22 am

Just get a Dwyer Model that is for measuring draft. Mark II model 25 is what most of us use.
You can find them online for $20-35 depending.

check ebay, sometimes you find a good deal or two there too.
WNY
 
Hot Air Coal Stoker Stove: Keystoker 90K, Leisure Line Hyfire I
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Re: manometer?

PostBy: Flyer5 On: Sat Nov 24, 2012 9:26 am

WNY wrote:Just get a Dwyer Model that is for measuring draft. Mark II model 25 is what most of us use.
You can find them online for $20-35 depending.

check ebay, sometimes you find a good deal or two there too.



The Dwyer 460 air meter works good as well and no fluid to worry about.
Flyer5
 
Stoker Coal Boiler: Leisure Line WL110
Hot Air Coal Stoker Stove: Leisure Line Pioneer

Re: manometer?

PostBy: lsayre On: Sat Nov 24, 2012 9:31 am

You might consider making your own.

http://ecorenovator.org/forum/tools/205 ... meter.html

I would suggest using Merriam 100 Red Unity Oil (same density as water, 1.00) since it won't evaporate as quickly as water would, but it will act the same way. That way your "inches of water column" scale will be drawn in inches taken straight off of a ruler. Use a ruler scaled in 10th's of an inch.

Dwyer's Red Oil (for comparison) has a density of 0.826.
lsayre
 
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Stockton Anthracite Pea
Other Heating: Resistance Boiler (13 KW)

Re: manometer?

PostBy: samhill On: Sat Nov 24, 2012 9:48 am

That looks like something that would be fun to play with, thinking about it I have something similar somewhere in the vast wasteland I call a garage. I also at one time had a GT750 motorcycle & made a three tube one to balance the carbs. For our needs I would think you would still need a Dwyer or some other to have a known level to compare to just to make sure.
samhill
 
Hot Air Coal Stoker Furnace: keystoker 160
Hand Fed Coal Stove: hitzer 75 in garage
Stove/Furnace Make: keystoker/hitzer
Stove/Furnace Model: koker 160/ hitzer 75

Re: manometer?

PostBy: VigIIPeaBurner On: Sat Nov 24, 2012 9:49 am

Flyer5 wrote:
WNY wrote:Just get a Dwyer Model that is for measuring draft. Mark II model 25 is what most of us use.
You can find them online for $20-35 depending.

check ebay, sometimes you find a good deal or two there too.



The Dwyer 460 air meter works good as well and no fluid to worry about.


Agreed :) The 460 has much lower resolution and the same top end that the model 25's. It might not be as easy to read from a distance but the added versatility is good to have. It's easily portable and can be used to measure and balance the air flow from the registers on ducted air systems . The added range that this instrument has makes it especially helpful to find leaks around gaskets. Last year I measured the pressure drop created by the intended lack of gasketing at the bottom of the Vigilant's window with my 460 (bought it from Flyer5 ;)) .
VigIIPeaBurner
 
Hot Air Coal Stoker Furnace: Keystoker Koker
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Re: manometer?

PostBy: lsayre On: Sat Nov 24, 2012 9:52 am

samhill wrote:For our needs I would think you would still need a Dwyer or some other to have a known level to compare to just to make sure.


Not if your vertical scale is drawn out accurately and with demarcation lines scaled in 10th's of an inch, and you use a unity oil. It will read accurately in 10th's of an inch of water column. The tricky part comes only if you use an oil that does not have a density of 1.00 (such as Dwyer Red Oil).

One thing I might consider would be to tilt it a bit more steeply so the precision in reading it is a bit higher.
Last edited by lsayre on Sat Nov 24, 2012 10:27 am, edited 1 time in total.
lsayre
 
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Stockton Anthracite Pea
Other Heating: Resistance Boiler (13 KW)

Re: manometer?

PostBy: VigIIPeaBurner On: Sat Nov 24, 2012 10:25 am

lsayre wrote:
samhill wrote:For our needs I would think you would still need a Dwyer or some other to have a known level to compare to just to make sure.


Not if your vertical scale is drawn out accurately and with demarcation lines scaled in 10th's of an inch, and you use a unity oil. It will read accurately in 10th's of an inch of water column. The tricky part comes only if you use an oil that does not have a density of 1.00 (such as Dwyer Red Oil).


FYI ... Dwyer 460 Air Meter measures "pressure ranges from .005-.09 and .05-1.0 inches w.c."

Here's a link to the [urlhttp://www.dwyer-inst.com/Product/Pressure/Manometers/FluidFilled/SeriesMarkII/Intro]Mark II Model 25[/url]
VigIIPeaBurner
 
Hot Air Coal Stoker Furnace: Keystoker Koker
Hand Fed Coal Stove: Vermont Casting Vigilant II 2310
Other Heating: #2 Oil Furnace