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Pascal Gauge
jpworks
Trying to find a 0-500 pascal gauge. Like the one on the 1kg Mill City.

Thanks
renatoa
Check Dwyer 2000-500PA Magnehelic
allenb
A few options:

https://www.allie.../70328650/

https://www.allie...lsrc=aw.ds

https://www.world...ure-gages/
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
BobbyS
I notice many cannot tolerate high temp
jpworks
Thanks for the suggestions.
jpworks
I am want to purchasing one of the Dwyer gauges. My understanding is I want to ready vacuum inside the roast chamber? The gauges recommended does not show a negative sign. Could someone please explain. Thanks
allenb
For anyone needing a US source for the gauge reading pascals

https://www.allie...5000-500PA

jp, why the need to measure vacuum?
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
jpworks
My thought is the drum fan is pulling air through the drum. There would be vacuum not pressure?
hankua
The reason for hooking up a Dwyer gauge to the drum/plenum/exhaust is to adjust the exhaust blower air flow. The would apply to a machine with a damper or variable speed fan.

For a 1k and under roaster the Dwyer 2000-00 0-0.25? wc should do the job and I have had good luck buying used gauges off Ebay. The easiest way to install is to drill out the plenum and tap in a fitting, tube it to the low side and put a little filter in the high side. They can be flush mounted or face mounted using a home made part from scraps. Once the gauge is installed you can use it to replicate any established air flow setting and figure out some new ones. Very handy inexpensive upgrade mod!
allenb
Reading negative pressure on the exhaust duct would be useful but curious why the mil city 1kg is using a range of 0-500 pascals (0-2" H2O) which would be out of optimal range for typical drum roaster exhuast fans and also out of range for LP and natural gas pressures.
allenb attached the following image:
capture_14.png

1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
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