Some of the pros do as follows: ( be sure that you read steps 4 & 5 before proceeding )- 1. Purchase a tall & sturdy "Graduated Cylinder" from a chemical supply house, yes, expensive in glass. Maybe our resident Chemist on the 146.94 repeater could help.... This needs to have fine markings, not just every 100 ML as the cheaper ones do. The 500 ML cylinder or greater is the norm. 2. Attach a large funnel ( yet not overly large ) with or without a 'debris' screen above the cylinder. Thick plastic is the norm, yet UV safe ( black as a rule ). 3. Mount the three items above in a place that is not covered by trees or other obstructions above, nor subject to updraft wind ( this means away from their homes by more than 15 feet ). 4. Calculate the actual area of the funnel and apply some math to 'calibrate' the cylinder, or compare to others in the area for a few months ( the easier & less scientific method ). Hint: Use the number 3.1415926 ( Pi ) and the appropriate formula with conversion factors for millimeters, millileters ( not quarts) , and inches. 1 inch is 2.54 centimeters. Pies are round, Pi Radius Squared may help you. 5. Empty the gauge each day by inverting the system. Think about how you mount the cylinder and how well the funnel is attached. This is the worst part unless you are very dedicated...
That makes the 'seesaw' type look better for non-commercial or non-government types. ( Try Vaisala Systems if money is not an issue, tell 'em the guy who referred you used Surface Systems Inc. ( later called Quixote systems ) weather station equipment including Price Precip. sensors ). BTW- Price Precipitation sensors may no longer be in business. There were better systems that were less fragile... Jon L. Livingston, Electronics Technician 17722 Fieldglen Drive ( SE of FM 529 & Barker Cypress Road ) Houston, Texas 77084 jkli...@comcast.net General Radiotelephone license PGGB062294 CET Wireless Communications WCM-R185658 Amateur Radio license KB0MNM www.linkedin.com/in/jon-livingston for latest resume- needs updates... Previously employed by MnDOT and serviced approx. 12 Roadway Weather Information Systems in late fall to early winter- why? Farmer-plowed dirt at harvest time obscured visibility sensors until cleaned. ----- Original Message ----- From: "Michael Mustachia via BVARC" <bvarc@bvarc.org> To: "BRAZOS VALLEY AMATEUR RADIO CLUB" <bvarc@bvarc.org> Cc: "Michael Mustachia" <mmustac...@att.net> Sent: Wednesday, August 30, 2017 10:49:05 AM Subject: Re: [BVARC] Hurricane Harvey Rainfall I have two weather stations. Davis Vantage Pro $459.99 and Davis Vantage Vue $269.99. I bought them from Scientific Sales Inc. I think they are in New Jersey. If I am remembering correctly no tax and no freight. They both are very good. The one think to realize about the rain gauge is very accurate in a steady rain. I have compared with Channel 2. However in a heavy or blowing rain the design of all of the gauges will now allow them to keep up with the actual amount of rainfall or the rate. The collector depends on a sort of seesaw with cups on each end. Mike Mustachia KF5PHA -----Original Message----- From: D. Howard Bingham via BVARC Sent: Wednesday, August 30, 2017 1:19 AM To: BRAZOS VALLEY AMATEUR RADIO CLUB Cc: D. Howard Bingham ; ad...@yahoo.com Subject: Re: [BVARC] Hurricane Harvey Rainfall Anywhere LOCAL where one can find good quality rain gauges, not the small plastic jobs sold at home improvement stores.? Used to be AESHAM used to carry several pages of weather gear in their annual catalog (That I sorely MISS.) 73 Howard Bingham, Deer Park, TX No water in the House, but was wall to wall lake last Saturday morning. --- On 8/29/2017 8:05 AM, Leslie via BVARC wrote: > I am at approximately 32" in League City. No water in the house, still > have power, etc. > Be safe all. > 73 > Leslie , ad5wb > >> On Aug 29, 2017, at 7:33 AM, "Allen F. Mattis via BVARC" >> <bvarc@bvarc.org> wrote: >> >> As of 7:40 AM Aug 29, 2017 I have measured 22.84 inches of rain from >> Hurricane Havey. >> >> Allen N5AFV >> >> >> _ _______________________________________________ BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Message delivered to mmustac...@att.net _______________________________________________ BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Message delivered to jkli...@comcast.net
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