Poignard
Well-Known Member
Thinking of buying one of these.
Any forumites had any experience of them?
Any forumites had any experience of them?
Weems & Plath Marine Electronic Barometer
- Thread starter Poignard
- Start date
ColinHuggins
N/A
Had a look, as I recall too pricey for the boat, best at home in the hall - then I found my local chandlery was selling off a clock/barometer set which was gathering dust . .
Poignard
Well-Known Member
Yes but what atracts me to the W&P is that it is also a barograph, as well as a barometer, but doesn't have any moving parts, pens, ink etc. to corrode or wear out. And it is much cheaper than a mechanical one.
chas
Well-Known Member
I am not sure that we are talking about the same thing, but I have had a Weems & Plath electronic Barometer for a couple of years and, after the depth sounder, it must be the most useful instrument on board. Mine is about 4 inches square and records 24 hours worth of data (more if you press buttons). I think i paid about £50 to a supplier in the states via the web. I have seen the same instrument under other brand names.
cpedw
Well-Known Member
Having been inspired by the mantelpiece electronic weather station, I went looking for an instrument that would record several days of baro data but I couldn't find one. So I made one. It draws a graph showing the last 4 to 5 days and the current reading. It runs off 12 volts and draws about 5mA. I'm proud of it but the bits cost around £70 (and don't mention the intellectual effort) so that W&P device for <$100 makes me look a bit silly.
If you're interested, I am partway through writing up the projct; for a PM I can let you have the circuit and software and an incomplete description.
Derek
If you're interested, I am partway through writing up the projct; for a PM I can let you have the circuit and software and an incomplete description.
Derek
tangofour
Well-Known Member
No intellectual effort involved
http://www.sensortechnics.com/download/ssan-29-087.pdf
I have built a couple of these over the years and have a tube of the sensors (SCX 15 ANC ) if anyone is interested!
This sensor http://www.allsensors.com/datasheets/app_specific/14bit_dig_baro_ind.pdf gives a digital output and could be read using the parallel port of a PC or with a PIC or similar uProcessor could be used to log data for months using miniscule amounts of power.
very reasonable commercial unit here
http://www.edirectory.co.uk/pf/88888/mia/d/digital+barometer+weather+station/pid/3482110
http://www.sensortechnics.com/download/ssan-29-087.pdf
I have built a couple of these over the years and have a tube of the sensors (SCX 15 ANC ) if anyone is interested!
This sensor http://www.allsensors.com/datasheets/app_specific/14bit_dig_baro_ind.pdf gives a digital output and could be read using the parallel port of a PC or with a PIC or similar uProcessor could be used to log data for months using miniscule amounts of power.
very reasonable commercial unit here
http://www.edirectory.co.uk/pf/88888/mia/d/digital+barometer+weather+station/pid/3482110
dickh
Well-Known Member
I've used Jotun Sea Guardian for the last couple of years on the Deben, just get slime even with a mid season light scrub.
jimg
Well-Known Member
???? /forums/images/graemlins/confused.gif /forums/images/graemlins/confused.gif
Poignard
Well-Known Member
CPEDW
I'm very impressed by your skills to make such a thing but as I'm still working for a living, and sailing when I'm not, I can't spare the time to make one [even if I was capable of it!].
But thanks for the kind offer.
I'm very impressed by your skills to make such a thing but as I'm still working for a living, and sailing when I'm not, I can't spare the time to make one [even if I was capable of it!].
But thanks for the kind offer.
Poignard
Well-Known Member
Tangofour
"May I refer the honourable member to the answer I gave earlier" to CPEDW.
I had a look at the cheap instrument you link to, but there doesn't seem to be any historic pressure data, which is what the Weems & Plath instument offers. But thanks anyway.
I should point out that I'm not looking for an alternative to the W&P, but opinions [based on actual experience] of it.
"May I refer the honourable member to the answer I gave earlier" to CPEDW.
I had a look at the cheap instrument you link to, but there doesn't seem to be any historic pressure data, which is what the Weems & Plath instument offers. But thanks anyway.
I should point out that I'm not looking for an alternative to the W&P, but opinions [based on actual experience] of it.
ShipsWoofy
Well-Known Member
I have a 24hr barograph on my VHF, really handy as I am terrible for forgetting to check the barometer at set intervals. Also much better as there is no tapping involved, just read off an accurate measurement.
I live close enough to an airport listed on xcwind <sic> that allowed me to set it and check it for a week at home before installing on the boat.
Many people suggested that including it on a VHF is a gimmick, on the contrary I am now surprised others have not followed suit, a great add on. If you are changing the VHF it is cheaper than buying a radio and weather station type affair.
I live close enough to an airport listed on xcwind <sic> that allowed me to set it and check it for a week at home before installing on the boat.
Many people suggested that including it on a VHF is a gimmick, on the contrary I am now surprised others have not followed suit, a great add on. If you are changing the VHF it is cheaper than buying a radio and weather station type affair.
Talbot
Well-Known Member
Certainly looks a nice piece of kit and has a much more detailed history than all these others:
Poignard
Well-Known Member
Full info and downloads from www.weems-plath.com
Best price I've found so far is £70, including vat, from SailGB
Best price I've found so far is £70, including vat, from SailGB
chas
Well-Known Member
It also appears as a Vion 4010X - see http://www.ukweathershop.co.uk/acatalog/vion_meteo_concept_sub.html
Roberto
Well-Known Member
I have one, I do not know who is the original manufacturer but mine is made by Vion; I like it a lot and it has widely repaid itself /forums/images/graemlins/wink.gif
The graph shows 6-12-24 hourly pressures, but there is the possibility of having pressure digits (ie not the graph, simply the pressure digit) up to -48 hours.
It is an lcd display so better check the location and viewing angle at the chart table: I had to change its position as the lcd "faded" when viewed from aside.
Nice piece of kit /forums/images/graemlins/smile.gif
The graph shows 6-12-24 hourly pressures, but there is the possibility of having pressure digits (ie not the graph, simply the pressure digit) up to -48 hours.
It is an lcd display so better check the location and viewing angle at the chart table: I had to change its position as the lcd "faded" when viewed from aside.
Nice piece of kit /forums/images/graemlins/smile.gif
DeeGee
Well-Known Member
try here , or in a hurry... here
I have had one of these for ages, 3 or 4 years. I find entering the reading into each line of my log makes me far more aware of any dips in pressure, despite the direct view of the last 12hrs. Just keeps on working and has been chucked to the floor before now. /forums/images/graemlins/smile.gif
I have had one of these for ages, 3 or 4 years. I find entering the reading into each line of my log makes me far more aware of any dips in pressure, despite the direct view of the last 12hrs. Just keeps on working and has been chucked to the floor before now. /forums/images/graemlins/smile.gif
philip_stevens
Well-Known Member
The full list of 4001 and 4010 Vion barometers, can be seen here
