Author Topic: Hi-res air pressure/elevation/barometer sensor kit  (Read 6953 times)

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Offline SLOweather

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Hi-res air pressure/elevation/barometer sensor kit
« on: November 28, 2011, 01:36:33 PM »
And by Hi-res, I mean 1/3 INCH of elevation change or similar!



I saw this kit in the Ramsey Electronics catalog yesterday.

 Measure Elevation To A Third Of An Inch...
And Air Pressure In NINE Formats!
Accuracy And Sensitivity Beyond Belief!

    * Pressure resolution greater than 0.0001kPa!
    * Super elevation resolution better than 1/3"!
    * 128 x 64 pixel graphical display!
    * Shows realtime elevation & pressure changes!
    * USB computer interface for easy data transfer!
    * 13,824 samples of FLASH storage available!
    * Small coat pocket size
    * Input for storage of data when YOU want it!
    * Multiple built-in alarms
    * Settable offsets for pressure and elevation
    * Built-in Li-Ion rechargeable battery
    * Built-in charging & power management system
    * Run & charge from internal battery, USB power, or external 6-30VDC source!
    * Runs 2 days on a single charge
    * Simple graphical menu based operation

THE BEST JUST GOT BETTER!
The response to the UP24 was incredible! Customers from professional land surveyors, meteorologists, scientists, pilots and hikers to the curious hobbyist were overwhelmed with its sensitivity and accuracy. Reading realtime elevation to a third of an inch blew their minds! Even with this response we considered it a challenge to make it even better... and we sure did! Introducing the next generation UP24B!

First, for extended field use, we designed an internal lithium ion power cell and a state of the art power management system. Now you can charge the internal power cell from either an external source of 6VDC to 30VDC or a standard 5VDC USB connection from a PC, laptop, or USB charger! The power management system determines the best charging source to use as well as operates the UP24B while keeping the lithium Ion cell at full charge. Charging status and battery condition displays are also provided.

Next we added a "MARK" feature. This allows storing a single data point reading when YOU want instead of blindly storing readings at the selected sample rate. A connection jack is provided for a simple contact closure to make a reading. This closure can be a "dry" set of contacts or electronic closure. Data storage is in comma delimited format for easy loading into a spreadsheet. Each time you enter the "MARK MODE" a new data block is started allowing you to easily identify multiple sets of data. Current data is constantly displayed for your convenience in mark mode.

Finally, we streamlined the controls to make a more compact profile. The rotary menu navigation dial has been replaced by contactless proximity buttons for more reliable operation! Just touch your way through the menus without any dials or switches!

THE ULTIMATE PRODUCT FOR THE SERIOUS, THE CURIOUS, AND THE PROFESSIONAL!
We did it again! The UP24 was one of our most advanced kits to date. Rather than resting on our laurels we made it even better and the new UP24B is an absolute MUST for anyone serious about the environment around us! But the applications only begin there. The unique design allows unprecedented super high resolution measurements and display of absolute atmospheric air pressure and elevation. Hobbyists and weather enthusiasts absolutely love it! Land surveyors, scientists, and pilots have made it a "must have"!

ELEVATION TO A THIRD OF AN INCH!
I have written a lot of catalog pages and a boatload of specification sheets but this one is a challenge because the applications are endless and the performance characteristics are beyond description! The UP24B senses ambient air pressure and critically calculates elevation with unheard of precision!

Using a highly sensitive sensor and 24-bit A/D converter in a special noise-immune design, less than 1/3" of an inch of elevation resolution is achieved! YES, we said 1/3 of an inch! This high accuracy and resolution opens the door to a host of sophisticated environmental air pressure monitoring applications.

AIR PRESSURE IN ANY FORMAT!
Unlike your normal run-of-the-mill barometer, air pressure is sensed in Pa's or kPa's. What are those you may ask? Pascals or KiloPascals. However, don't be afraid, for your convenience, and to fit any application you may have, it is also displayed in millibars, bars, PSI, atmospheres, millimeters of mercury, inches of mercury, and feet of water! Take your pick! The range of the UP24B is 15kPa to 155kPa. That also means:

    *
      15000 to 155000 Pascal's
    *
      150 to 1550 Millibars0.15 to 1.55 Bars
    *
      2.175566 to 22.48085 Pounds per square inch
    *
      0.1480385 to 1.529731 Atmospheres
    *
      112.5093 to 1162.596 Millimeters of mercury
    *
      4.429498 to 45.77148 Inches of mercury
    *
      5.02 to 51.9 feet of water
« Last Edit: November 28, 2011, 01:40:51 PM by SLOweather »

Offline SLOweather

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #1 on: November 28, 2011, 02:11:37 PM »
I've already thought of a use for this, in our water company, that will pay for it.

We have 6 production wells and one spare. Every week I measure the depth to water in each of them, and the 7 day rainfall.

While all but 2 are clearly drawing from different formations, I've been curious about how the static water levels compare. However, all of them are drilled in hills at differing ground elevations, so I need to apply correction factors to each well's depth-to-water reading to do that. I got a quote on having them surveyed, and it was going to be a lot of money, over a kilobuck.

I can buy and build one of these kits, and get the comparative casing elevations in about an hour. If I can find a benchmark in the neighborhood, I should have a good idea of the actual elevations, too.

Offline Weather Display

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #2 on: November 28, 2011, 02:44:50 PM »
Interesting
would be cool to see the pressure changes that you get during thunderstorms/or when they are passing over or nearby

or obviously with  a frontal passage (where you can get up to 3hpa or more pressure changes in a few minutes)
Brian
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Offline d_l

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #3 on: November 28, 2011, 03:08:18 PM »
I can buy and build one of these kits, and get the comparative casing elevations in about an hour. If I can find a benchmark in the neighborhood, I should have a good idea of the actual elevations, too.

Chris, to do accurate altimeter elevation surveying, you need two of these kits.  You leave one of them recording the elevation of a benchmark while you are doing the surveying with the other.  Then you adjust your measurements by the deviations from the benchmark elevation that the stationary unit has recorded at the same time as your survey points were recorded.
--Dave--

Wireless VP2 w/ solar, 24hr FARS, Heater, (Envoy-WLIP)*3-Meteohub, plus custom VP2 @ 26', WL 6.0.4, WU & W4U=KNVRENO37 NetcamXL

People always talk about the weather, but they never do anything about it.  Not me.  I'm gonna measure it.  https://www.tceweather.com

Offline jgillett

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #4 on: November 28, 2011, 04:37:20 PM »
Windy - any chance of working the output of this into WD?
John
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Offline Weather Display

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #5 on: November 28, 2011, 05:45:43 PM »
the data to the PC just says its USB 2.0
any more info?
Brian
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Offline jgillett

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #6 on: November 28, 2011, 05:51:58 PM »
the data to the PC just says its USB 2.0
any more info?

Just what's on their site, which is essentially zippo as far as this subject is concerned.
John
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Offline SLOweather

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #7 on: November 28, 2011, 05:56:31 PM »
the data to the PC just says its USB 2.0
any more info?

The manual PDF is here.

Offline jgillett

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #8 on: November 28, 2011, 06:59:19 PM »
Thanks for that. Unfortunately I don't see anything about the USB interfacing in there - or did I miss it...
John
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Offline Weather Display

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #9 on: November 28, 2011, 09:29:15 PM »
the only info I see is
RS232 Baud Rate
This menu selection allows you to choose the IRDA communications
parameters. The first choice turns off all IRDA functions to conserve battery
power. Select the same baud and communications parameters as the PC or
other device you would like to transfer data to with the proper software.
Brian
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Offline jgillett

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #10 on: November 28, 2011, 10:16:36 PM »
Umm - 'proper software'. That's where you come in - right?   :roll:
John
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Offline SLOweather

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #11 on: November 29, 2011, 11:28:50 AM »
Thanks for that. Unfortunately I don't see anything about the USB interfacing in there - or did I miss it...

I noticed that too, and emailed Ramesy support.

Here's the UP24B CONTROL COMMANDS AND DRIVER/SOFTWARE INSTALLATION PDF.

It looks like everything Windy needs is in there. How to talk to it serially, GET commands for getting data out, SET commands for sending commands etc to the unit.
« Last Edit: November 29, 2011, 11:38:22 AM by SLOweather »

Offline jgillett

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #12 on: November 29, 2011, 11:57:40 AM »
Nice job. Looks like that might cover what Brian needs. Now - is there enough interest in this device for him to do that?

Thanks.
John
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Offline SLOweather

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #13 on: November 29, 2011, 12:02:03 PM »
Nice job. Looks like that might cover what Brian needs. Now - is there enough interest in this device for him to do that?

Thanks.

If he builds it we will come. ;) I'm still waiting on his support of the flat plate rain sensor. I'd love to be able to put that graph on my website.

Offline Weather Display

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #14 on: November 29, 2011, 02:38:11 PM »
Quote
I'm still waiting on his support of the flat plate rain sensor. I'd love to be able to put that graph on my website.
ah, I was waiting for you to email me about that, LOL
I will get onto that and let you know!
Brian
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Offline Weather Display

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #15 on: November 29, 2011, 02:45:44 PM »
communication with the kit looks easy
the driver converts the usb to serial
and its then easy to request and get back the data
nice
Quote
G PR Get Pressure
Explanation: Gets the current air pressure in the current units with offset
added.
Example:
G PR<CR> sent
1003.5213Pa<CR><LF> returned
So I can easily add support for this...i.e to use this as the baro sensor instead of from the station
Brian
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Offline SLOweather

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #16 on: November 29, 2011, 03:02:27 PM »
Quote
I'm still waiting on his support of the flat plate rain sensor. I'd love to be able to put that graph on my website.
ah, I was waiting for you to email me about that, LOL
I will get onto that and let you know!

Sorry, I posted in-line in the thread. Shoulda emailed. My bad.

Offline Weather Display

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #17 on: November 29, 2011, 03:31:07 PM »
proof of concept re the rain volume project
raw data appearing in WD in a debug window as I said the words testing into a microphone
now I just need to get the data plotted onto the temp/hum/rain graph on the main screen :)
Brian
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Offline Weather Display

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Re: Hi-res air pressure/elevation/barometer sensor kit
« Reply #18 on: December 08, 2011, 11:26:50 PM »
I have added initia support for the UP24B High resolution barometer sensor kit
into WD now (latest .zip update, in the advanced setup)
should at least get the raw data...will then need to parse that, once get that much working
Brian
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