Empathy List Archives

TV

Tom Van Baak

Tue, Jan 3, 2017 3:08 PM

I have some high-end temperature and pressure instruments. But for casual use in my home and mobile timing lab I use Sparkfun Weather Stations. The old URL is:

https://www.sparkfun.com/products/retired/10586

It's USB, talk-only, one reading a second, temperature, pressure, humidity -- about as simple as you can get. Perfect for data logging along with frequency standards, GPS, counters and such.

But they don't make 'em anymore. My question is what similar well-engineered, talk-only, serial or USB, temperature-pressure-humidity sensors have you run across and could recommend? Not to be picky bit no cheapo 1C or 0.5C sensors; 0.1C or better is ok.

I know it's "easy" to throw one together with an Arduino, but I'm looking for something pre-packaged, something that reliably works, out-of-the-box. I have backup plans but hope someone on the list knows some products they have used and would recommend.

We could extend the discussion to voltage and power monitors too. Or some kind of universal sensor TAPR project. But for now, let's just keep it to simple air / environmental sensing.

Thanks,
/tvb

I have some high-end temperature and pressure instruments. But for casual use in my home and mobile timing lab I use Sparkfun Weather Stations. The old URL is: https://www.sparkfun.com/products/retired/10586 It's USB, talk-only, one reading a second, temperature, pressure, humidity -- about as simple as you can get. Perfect for data logging along with frequency standards, GPS, counters and such. But they don't make 'em anymore. My question is what similar well-engineered, talk-only, serial or USB, temperature-pressure-humidity sensors have you run across and could recommend? Not to be picky bit no cheapo 1C or 0.5C sensors; 0.1C or better is ok. I know it's "easy" to throw one together with an Arduino, but I'm looking for something pre-packaged, something that reliably works, out-of-the-box. I have backup plans but hope someone on the list knows some products they have used and would recommend. We could extend the discussion to voltage and power monitors too. Or some kind of universal sensor TAPR project. But for now, let's just keep it to simple air / environmental sensing. Thanks, /tvb

AG

Adrian Godwin

Tue, Jan 3, 2017 3:14 PM

I haven't used this current generation of loggers (I do have a couple of
older RS232 units) but there's quite a range at

https://www.lascarelectronics.com/markets/environmental/

On Tue, Jan 3, 2017 at 3:08 PM, Tom Van Baak tvb@leapsecond.com wrote:

I have some high-end temperature and pressure instruments. But for casual
use in my home and mobile timing lab I use Sparkfun Weather Stations. The
old URL is:

 https://www.sparkfun.com/products/retired/10586

It's USB, talk-only, one reading a second, temperature, pressure, humidity
-- about as simple as you can get. Perfect for data logging along with
frequency standards, GPS, counters and such.

But they don't make 'em anymore. My question is what similar
well-engineered, talk-only, serial or USB, temperature-pressure-humidity
sensors have you run across and could recommend? Not to be picky bit no
cheapo 1C or 0.5C sensors; 0.1C or better is ok.

I know it's "easy" to throw one together with an Arduino, but I'm looking
for something pre-packaged, something that reliably works, out-of-the-box.
I have backup plans but hope someone on the list knows some products they
have used and would recommend.

We could extend the discussion to voltage and power monitors too. Or some
kind of universal sensor TAPR project. But for now, let's just keep it to
simple air / environmental sensing.

Thanks,
/tvb

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.

I haven't used this current generation of loggers (I do have a couple of older RS232 units) but there's quite a range at https://www.lascarelectronics.com/markets/environmental/ On Tue, Jan 3, 2017 at 3:08 PM, Tom Van Baak <tvb@leapsecond.com> wrote: > I have some high-end temperature and pressure instruments. But for casual > use in my home and mobile timing lab I use Sparkfun Weather Stations. The > old URL is: > > https://www.sparkfun.com/products/retired/10586 > > It's USB, talk-only, one reading a second, temperature, pressure, humidity > -- about as simple as you can get. Perfect for data logging along with > frequency standards, GPS, counters and such. > > But they don't make 'em anymore. My question is what similar > well-engineered, talk-only, serial or USB, temperature-pressure-humidity > sensors have you run across and could recommend? Not to be picky bit no > cheapo 1C or 0.5C sensors; 0.1C or better is ok. > > I know it's "easy" to throw one together with an Arduino, but I'm looking > for something pre-packaged, something that reliably works, out-of-the-box. > I have backup plans but hope someone on the list knows some products they > have used and would recommend. > > We could extend the discussion to voltage and power monitors too. Or some > kind of universal sensor TAPR project. But for now, let's just keep it to > simple air / environmental sensing. > > Thanks, > /tvb > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. >

J

jimlux

Tue, Jan 3, 2017 3:22 PM

On 1/3/17 7:08 AM, Tom Van Baak wrote:

I have some high-end temperature and pressure instruments. But for casual use in my home and mobile timing lab I use Sparkfun Weather Stations. The old URL is:

 https://www.sparkfun.com/products/retired/10586

Replaced by
https://www.sparkfun.com/products/12081
which doesn't have the USB.

By the time you add a board with a processor, you're in the $50 range..

I use these at work:

https://www.lascarelectronics.com/easylog-data-logger-el-usb-rt/
Well, actually I use the EL-USB-2-LCD.. which logs to internal memory
and can't log/unload data at the same time and which requires a windows
program.

That said, they work well, come with a traceable cal certificate, etc.
I don't know that they do 0.1 degree (the data sheet says 0.5C, and I
think that's the logging accuracy), and, well, humidity sensors are of
dubious accuracy away from the middle of the range

https://www.lascarelectronics.com/easylog-data-logger-el-usb-2-lcd/

It's USB, talk-only, one reading a second, temperature, pressure, humidity -- about as simple as you can get. Perfect for data logging along with frequency standards, GPS, counters and such.

But they don't make 'em anymore. My question is what similar well-engineered, talk-only, serial or USB, temperature-pressure-humidity sensors have you run across and could recommend? Not to be picky bit no cheapo 1C or 0.5C sensors; 0.1C or better is ok.

I know it's "easy" to throw one together with an Arduino, but I'm looking for something pre-packaged, something that reliably works, out-of-the-box. I have backup plans but hope someone on the list knows some products they have used and would recommend.

We could extend the discussion to voltage and power monitors too. Or some kind of universal sensor TAPR project. But for now, let's just keep it to simple air / environmental sensing.

Thanks,
/tvb

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

On 1/3/17 7:08 AM, Tom Van Baak wrote: > I have some high-end temperature and pressure instruments. But for casual use in my home and mobile timing lab I use Sparkfun Weather Stations. The old URL is: > > https://www.sparkfun.com/products/retired/10586 > Replaced by https://www.sparkfun.com/products/12081 which doesn't have the USB. By the time you add a board with a processor, you're in the $50 range.. I use these at work: https://www.lascarelectronics.com/easylog-data-logger-el-usb-rt/ Well, actually I use the EL-USB-2-LCD.. which logs to internal memory and can't log/unload data at the same time and which requires a windows program. That said, they work well, come with a traceable cal certificate, etc. I don't know that they do 0.1 degree (the data sheet says 0.5C, and I think that's the logging accuracy), and, well, humidity sensors are of dubious accuracy away from the middle of the range https://www.lascarelectronics.com/easylog-data-logger-el-usb-2-lcd/ > It's USB, talk-only, one reading a second, temperature, pressure, humidity -- about as simple as you can get. Perfect for data logging along with frequency standards, GPS, counters and such. > > But they don't make 'em anymore. My question is what similar well-engineered, talk-only, serial or USB, temperature-pressure-humidity sensors have you run across and could recommend? Not to be picky bit no cheapo 1C or 0.5C sensors; 0.1C or better is ok. > > I know it's "easy" to throw one together with an Arduino, but I'm looking for something pre-packaged, something that reliably works, out-of-the-box. I have backup plans but hope someone on the list knows some products they have used and would recommend. > > We could extend the discussion to voltage and power monitors too. Or some kind of universal sensor TAPR project. But for now, let's just keep it to simple air / environmental sensing. > > Thanks, > /tvb > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. >

PA

Paul Alfille

Tue, Jan 3, 2017 4:09 PM

If you don't mind using 1-wire sensors, there are many nice choices, like:

http://www.embeddeddatasystems.com/Environmental-Sensors_c_44.html for
temperature/humidity/barometric pressure...

On Tue, Jan 3, 2017 at 10:22 AM, jimlux jimlux@earthlink.net wrote:

On 1/3/17 7:08 AM, Tom Van Baak wrote:

I have some high-end temperature and pressure instruments. But for casual
use in my home and mobile timing lab I use Sparkfun Weather Stations. The
old URL is:

 https://www.sparkfun.com/products/retired/10586

Replaced by
https://www.sparkfun.com/products/12081
which doesn't have the USB.

By the time you add a board with a processor, you're in the $50 range..

I use these at work:

https://www.lascarelectronics.com/easylog-data-logger-el-usb-rt/
Well, actually I use the EL-USB-2-LCD.. which logs to internal memory and
can't log/unload data at the same time and which requires a windows program.

That said, they work well, come with a traceable cal certificate, etc. I
don't know that they do 0.1 degree (the data sheet says 0.5C, and I think
that's the logging accuracy), and, well, humidity sensors are of dubious
accuracy away from the middle of the range

https://www.lascarelectronics.com/easylog-data-logger-el-usb-2-lcd/

It's USB, talk-only, one reading a second, temperature, pressure, humidity

-- about as simple as you can get. Perfect for data logging along with
frequency standards, GPS, counters and such.

But they don't make 'em anymore. My question is what similar
well-engineered, talk-only, serial or USB, temperature-pressure-humidity
sensors have you run across and could recommend? Not to be picky bit no
cheapo 1C or 0.5C sensors; 0.1C or better is ok.

I know it's "easy" to throw one together with an Arduino, but I'm looking
for something pre-packaged, something that reliably works, out-of-the-box.
I have backup plans but hope someone on the list knows some products they
have used and would recommend.

We could extend the discussion to voltage and power monitors too. Or some
kind of universal sensor TAPR project. But for now, let's just keep it to
simple air / environmental sensing.

Thanks,
/tvb

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/m
ailman/listinfo/time-nuts
and follow the instructions there.

If you don't mind using 1-wire sensors, there are many nice choices, like: http://www.embeddeddatasystems.com/Environmental-Sensors_c_44.html for temperature/humidity/barometric pressure... On Tue, Jan 3, 2017 at 10:22 AM, jimlux <jimlux@earthlink.net> wrote: > On 1/3/17 7:08 AM, Tom Van Baak wrote: > >> I have some high-end temperature and pressure instruments. But for casual >> use in my home and mobile timing lab I use Sparkfun Weather Stations. The >> old URL is: >> >> https://www.sparkfun.com/products/retired/10586 >> >> > Replaced by > https://www.sparkfun.com/products/12081 > which doesn't have the USB. > > By the time you add a board with a processor, you're in the $50 range.. > > I use these at work: > > https://www.lascarelectronics.com/easylog-data-logger-el-usb-rt/ > Well, actually I use the EL-USB-2-LCD.. which logs to internal memory and > can't log/unload data at the same time and which requires a windows program. > > That said, they work well, come with a traceable cal certificate, etc. I > don't know that they do 0.1 degree (the data sheet says 0.5C, and I think > that's the logging accuracy), and, well, humidity sensors are of dubious > accuracy away from the middle of the range > > https://www.lascarelectronics.com/easylog-data-logger-el-usb-2-lcd/ > > > > > > > > It's USB, talk-only, one reading a second, temperature, pressure, humidity >> -- about as simple as you can get. Perfect for data logging along with >> frequency standards, GPS, counters and such. >> >> But they don't make 'em anymore. My question is what similar >> well-engineered, talk-only, serial or USB, temperature-pressure-humidity >> sensors have you run across and could recommend? Not to be picky bit no >> cheapo 1C or 0.5C sensors; 0.1C or better is ok. >> >> I know it's "easy" to throw one together with an Arduino, but I'm looking >> for something pre-packaged, something that reliably works, out-of-the-box. >> I have backup plans but hope someone on the list knows some products they >> have used and would recommend. >> >> We could extend the discussion to voltage and power monitors too. Or some >> kind of universal sensor TAPR project. But for now, let's just keep it to >> simple air / environmental sensing. >> >> Thanks, >> /tvb >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/m >> ailman/listinfo/time-nuts >> and follow the instructions there. >> >> > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/listinfo/time-nuts > and follow the instructions there. >

AG

Adrian Godwin

Tue, Jan 3, 2017 4:19 PM

All these (including the one I linked) seem to be 0.5C only.

This one gets to 0.2C : http://www.ti.com/tool/hdc1010evm

On Tue, Jan 3, 2017 at 4:09 PM, Paul Alfille paul.alfille@gmail.com wrote:

If you don't mind using 1-wire sensors, there are many nice choices, like:

http://www.embeddeddatasystems.com/Environmental-Sensors_c_44.html for
temperature/humidity/barometric pressure...

On Tue, Jan 3, 2017 at 10:22 AM, jimlux jimlux@earthlink.net wrote:

On 1/3/17 7:08 AM, Tom Van Baak wrote:

I have some high-end temperature and pressure instruments. But for

casual

use in my home and mobile timing lab I use Sparkfun Weather Stations.

The

old URL is:

 https://www.sparkfun.com/products/retired/10586

Replaced by
https://www.sparkfun.com/products/12081
which doesn't have the USB.

By the time you add a board with a processor, you're in the $50 range..

I use these at work:

https://www.lascarelectronics.com/easylog-data-logger-el-usb-rt/
Well, actually I use the EL-USB-2-LCD.. which logs to internal memory and
can't log/unload data at the same time and which requires a windows

program.

That said, they work well, come with a traceable cal certificate, etc. I
don't know that they do 0.1 degree (the data sheet says 0.5C, and I think
that's the logging accuracy), and, well, humidity sensors are of dubious
accuracy away from the middle of the range

https://www.lascarelectronics.com/easylog-data-logger-el-usb-2-lcd/

It's USB, talk-only, one reading a second, temperature, pressure,

humidity

-- about as simple as you can get. Perfect for data logging along with
frequency standards, GPS, counters and such.

But they don't make 'em anymore. My question is what similar
well-engineered, talk-only, serial or USB, temperature-pressure-humidity
sensors have you run across and could recommend? Not to be picky bit no
cheapo 1C or 0.5C sensors; 0.1C or better is ok.

I know it's "easy" to throw one together with an Arduino, but I'm

looking

for something pre-packaged, something that reliably works,

out-of-the-box.

I have backup plans but hope someone on the list knows some products

they

have used and would recommend.

We could extend the discussion to voltage and power monitors too. Or

some

kind of universal sensor TAPR project. But for now, let's just keep it

to

simple air / environmental sensing.

Thanks,
/tvb

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/m
ailman/listinfo/time-nuts
and follow the instructions there.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.

All these (including the one I linked) seem to be 0.5C only. This one gets to 0.2C : http://www.ti.com/tool/hdc1010evm On Tue, Jan 3, 2017 at 4:09 PM, Paul Alfille <paul.alfille@gmail.com> wrote: > If you don't mind using 1-wire sensors, there are many nice choices, like: > > http://www.embeddeddatasystems.com/Environmental-Sensors_c_44.html for > temperature/humidity/barometric pressure... > > > > On Tue, Jan 3, 2017 at 10:22 AM, jimlux <jimlux@earthlink.net> wrote: > > > On 1/3/17 7:08 AM, Tom Van Baak wrote: > > > >> I have some high-end temperature and pressure instruments. But for > casual > >> use in my home and mobile timing lab I use Sparkfun Weather Stations. > The > >> old URL is: > >> > >> https://www.sparkfun.com/products/retired/10586 > >> > >> > > Replaced by > > https://www.sparkfun.com/products/12081 > > which doesn't have the USB. > > > > By the time you add a board with a processor, you're in the $50 range.. > > > > I use these at work: > > > > https://www.lascarelectronics.com/easylog-data-logger-el-usb-rt/ > > Well, actually I use the EL-USB-2-LCD.. which logs to internal memory and > > can't log/unload data at the same time and which requires a windows > program. > > > > That said, they work well, come with a traceable cal certificate, etc. I > > don't know that they do 0.1 degree (the data sheet says 0.5C, and I think > > that's the logging accuracy), and, well, humidity sensors are of dubious > > accuracy away from the middle of the range > > > > https://www.lascarelectronics.com/easylog-data-logger-el-usb-2-lcd/ > > > > > > > > > > > > > > > > It's USB, talk-only, one reading a second, temperature, pressure, > humidity > >> -- about as simple as you can get. Perfect for data logging along with > >> frequency standards, GPS, counters and such. > >> > >> But they don't make 'em anymore. My question is what similar > >> well-engineered, talk-only, serial or USB, temperature-pressure-humidity > >> sensors have you run across and could recommend? Not to be picky bit no > >> cheapo 1C or 0.5C sensors; 0.1C or better is ok. > >> > >> I know it's "easy" to throw one together with an Arduino, but I'm > looking > >> for something pre-packaged, something that reliably works, > out-of-the-box. > >> I have backup plans but hope someone on the list knows some products > they > >> have used and would recommend. > >> > >> We could extend the discussion to voltage and power monitors too. Or > some > >> kind of universal sensor TAPR project. But for now, let's just keep it > to > >> simple air / environmental sensing. > >> > >> Thanks, > >> /tvb > >> _______________________________________________ > >> time-nuts mailing list -- time-nuts@febo.com > >> To unsubscribe, go to https://www.febo.com/cgi-bin/m > >> ailman/listinfo/time-nuts > >> and follow the instructions there. > >> > >> > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/m > > ailman/listinfo/time-nuts > > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. >

JH

Jim Harman

Tue, Jan 3, 2017 5:15 PM

These
https://www.adafruit.com/products/381
are .0625C resolution, 1-wire interface (temp only)

This one
https://www.adafruit.com/products/642
has Teflon insulation, for use at higher temps

Or this one, Temp/humidity with I2C interface
https://www.adafruit.com/products/1293

On Tue, Jan 3, 2017 at 11:19 AM, Adrian Godwin artgodwin@gmail.com wrote:

All these (including the one I linked) seem to be 0.5C only.

This one gets to 0.2C : http://www.ti.com/tool/hdc1010evm

On Tue, Jan 3, 2017 at 4:09 PM, Paul Alfille paul.alfille@gmail.com
wrote:

If you don't mind using 1-wire sensors, there are many nice choices,

like:

http://www.embeddeddatasystems.com/Environmental-Sensors_c_44.html for
temperature/humidity/barometric pressure...

On Tue, Jan 3, 2017 at 10:22 AM, jimlux jimlux@earthlink.net wrote:

On 1/3/17 7:08 AM, Tom Van Baak wrote:

I have some high-end temperature and pressure instruments. But for

casual

use in my home and mobile timing lab I use Sparkfun Weather Stations.

The

old URL is:

 https://www.sparkfun.com/products/retired/10586

Replaced by
https://www.sparkfun.com/products/12081
which doesn't have the USB.

By the time you add a board with a processor, you're in the $50 range..

I use these at work:

https://www.lascarelectronics.com/easylog-data-logger-el-usb-rt/
Well, actually I use the EL-USB-2-LCD.. which logs to internal memory

and

can't log/unload data at the same time and which requires a windows

program.

That said, they work well, come with a traceable cal certificate, etc.

I

don't know that they do 0.1 degree (the data sheet says 0.5C, and I

think

that's the logging accuracy), and, well, humidity sensors are of

dubious

accuracy away from the middle of the range

https://www.lascarelectronics.com/easylog-data-logger-el-usb-2-lcd/

It's USB, talk-only, one reading a second, temperature, pressure,

humidity

-- about as simple as you can get. Perfect for data logging along with
frequency standards, GPS, counters and such.

But they don't make 'em anymore. My question is what similar
well-engineered, talk-only, serial or USB,

temperature-pressure-humidity

sensors have you run across and could recommend? Not to be picky bit

no

cheapo 1C or 0.5C sensors; 0.1C or better is ok.

I know it's "easy" to throw one together with an Arduino, but I'm

looking

for something pre-packaged, something that reliably works,

out-of-the-box.

I have backup plans but hope someone on the list knows some products

they

have used and would recommend.

We could extend the discussion to voltage and power monitors too. Or

some

kind of universal sensor TAPR project. But for now, let's just keep it

to

simple air / environmental sensing.

Thanks,
/tvb

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/m
ailman/listinfo/time-nuts
and follow the instructions there.

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.

--

--Jim Harman

These https://www.adafruit.com/products/381 are .0625C resolution, 1-wire interface (temp only) This one https://www.adafruit.com/products/642 has Teflon insulation, for use at higher temps Or this one, Temp/humidity with I2C interface https://www.adafruit.com/products/1293 On Tue, Jan 3, 2017 at 11:19 AM, Adrian Godwin <artgodwin@gmail.com> wrote: > All these (including the one I linked) seem to be 0.5C only. > > This one gets to 0.2C : http://www.ti.com/tool/hdc1010evm > > On Tue, Jan 3, 2017 at 4:09 PM, Paul Alfille <paul.alfille@gmail.com> > wrote: > > > If you don't mind using 1-wire sensors, there are many nice choices, > like: > > > > http://www.embeddeddatasystems.com/Environmental-Sensors_c_44.html for > > temperature/humidity/barometric pressure... > > > > > > > > On Tue, Jan 3, 2017 at 10:22 AM, jimlux <jimlux@earthlink.net> wrote: > > > > > On 1/3/17 7:08 AM, Tom Van Baak wrote: > > > > > >> I have some high-end temperature and pressure instruments. But for > > casual > > >> use in my home and mobile timing lab I use Sparkfun Weather Stations. > > The > > >> old URL is: > > >> > > >> https://www.sparkfun.com/products/retired/10586 > > >> > > >> > > > Replaced by > > > https://www.sparkfun.com/products/12081 > > > which doesn't have the USB. > > > > > > By the time you add a board with a processor, you're in the $50 range.. > > > > > > I use these at work: > > > > > > https://www.lascarelectronics.com/easylog-data-logger-el-usb-rt/ > > > Well, actually I use the EL-USB-2-LCD.. which logs to internal memory > and > > > can't log/unload data at the same time and which requires a windows > > program. > > > > > > That said, they work well, come with a traceable cal certificate, etc. > I > > > don't know that they do 0.1 degree (the data sheet says 0.5C, and I > think > > > that's the logging accuracy), and, well, humidity sensors are of > dubious > > > accuracy away from the middle of the range > > > > > > https://www.lascarelectronics.com/easylog-data-logger-el-usb-2-lcd/ > > > > > > > > > > > > > > > > > > > > > > > > It's USB, talk-only, one reading a second, temperature, pressure, > > humidity > > >> -- about as simple as you can get. Perfect for data logging along with > > >> frequency standards, GPS, counters and such. > > >> > > >> But they don't make 'em anymore. My question is what similar > > >> well-engineered, talk-only, serial or USB, > temperature-pressure-humidity > > >> sensors have you run across and could recommend? Not to be picky bit > no > > >> cheapo 1C or 0.5C sensors; 0.1C or better is ok. > > >> > > >> I know it's "easy" to throw one together with an Arduino, but I'm > > looking > > >> for something pre-packaged, something that reliably works, > > out-of-the-box. > > >> I have backup plans but hope someone on the list knows some products > > they > > >> have used and would recommend. > > >> > > >> We could extend the discussion to voltage and power monitors too. Or > > some > > >> kind of universal sensor TAPR project. But for now, let's just keep it > > to > > >> simple air / environmental sensing. > > >> > > >> Thanks, > > >> /tvb > > >> _______________________________________________ > > >> time-nuts mailing list -- time-nuts@febo.com > > >> To unsubscribe, go to https://www.febo.com/cgi-bin/m > > >> ailman/listinfo/time-nuts > > >> and follow the instructions there. > > >> > > >> > > > _______________________________________________ > > > time-nuts mailing list -- time-nuts@febo.com > > > To unsubscribe, go to https://www.febo.com/cgi-bin/m > > > ailman/listinfo/time-nuts > > > and follow the instructions there. > > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > mailman/listinfo/time-nuts > > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > -- --Jim Harman

BC

Bob Camp

Tue, Jan 3, 2017 5:15 PM

Hi

There is an ever increasing pool of good sensors to put into something like this.
(More so for temperature and pressure. Humidity still is a bit of an issue.)
There’s not a lot to interface between the sensor and a USB “chip”. It’s surprising
that there aren’t more cheap / high accuracy choices out there.

Bob

On Jan 3, 2017, at 10:08 AM, Tom Van Baak tvb@LeapSecond.com wrote:

I have some high-end temperature and pressure instruments. But for casual use in my home and mobile timing lab I use Sparkfun Weather Stations. The old URL is:

https://www.sparkfun.com/products/retired/10586

It's USB, talk-only, one reading a second, temperature, pressure, humidity -- about as simple as you can get. Perfect for data logging along with frequency standards, GPS, counters and such.

But they don't make 'em anymore. My question is what similar well-engineered, talk-only, serial or USB, temperature-pressure-humidity sensors have you run across and could recommend? Not to be picky bit no cheapo 1C or 0.5C sensors; 0.1C or better is ok.

I know it's "easy" to throw one together with an Arduino, but I'm looking for something pre-packaged, something that reliably works, out-of-the-box. I have backup plans but hope someone on the list knows some products they have used and would recommend.

We could extend the discussion to voltage and power monitors too. Or some kind of universal sensor TAPR project. But for now, let's just keep it to simple air / environmental sensing.

Thanks,
/tvb

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Hi There is an ever increasing pool of good sensors to put into something like this. (More so for temperature and pressure. Humidity still is a bit of an issue.) There’s not a lot to interface between the sensor and a USB “chip”. It’s surprising that there aren’t more cheap / high accuracy choices out there. Bob > On Jan 3, 2017, at 10:08 AM, Tom Van Baak <tvb@LeapSecond.com> wrote: > > I have some high-end temperature and pressure instruments. But for casual use in my home and mobile timing lab I use Sparkfun Weather Stations. The old URL is: > > https://www.sparkfun.com/products/retired/10586 > > It's USB, talk-only, one reading a second, temperature, pressure, humidity -- about as simple as you can get. Perfect for data logging along with frequency standards, GPS, counters and such. > > But they don't make 'em anymore. My question is what similar well-engineered, talk-only, serial or USB, temperature-pressure-humidity sensors have you run across and could recommend? Not to be picky bit no cheapo 1C or 0.5C sensors; 0.1C or better is ok. > > I know it's "easy" to throw one together with an Arduino, but I'm looking for something pre-packaged, something that reliably works, out-of-the-box. I have backup plans but hope someone on the list knows some products they have used and would recommend. > > We could extend the discussion to voltage and power monitors too. Or some kind of universal sensor TAPR project. But for now, let's just keep it to simple air / environmental sensing. > > Thanks, > /tvb > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

RA

Robert Atkinson

Tue, Jan 3, 2017 5:45 PM

I've used the Dallas (now Maxim) Thermochron iButtons in several applications. Looks like a thick coin with battery, ram and RTC built in. Even used dozens of them map temperature distribution in a aircraft fuel tank. Also available as a 1-wire device. For precision I've used Pico Technology PT105 4 channel PRD interfaces.
Robert G8RPI.

  From: jimlux <jimlux@earthlink.net>

To: time-nuts@febo.com
Sent: Tuesday, 3 January 2017, 15:22
Subject: Re: [time-nuts] Temperature (environmental) sensors

On 1/3/17 7:08 AM, Tom Van Baak wrote:

I have some high-end temperature and pressure instruments. But for casual use in my home and mobile timing lab I use Sparkfun Weather Stations. The old URL is:

https://www.sparkfun.com/products/retired/10586

Replaced by
https://www.sparkfun.com/products/12081
which doesn't have the USB.

By the time you add a board with a processor, you're in the $50 range..

I use these at work:

https://www.lascarelectronics.com/easylog-data-logger-el-usb-rt/
Well, actually I use the EL-USB-2-LCD.. which logs to internal memory
and can't log/unload data at the same time and which requires a windows
program.

That said, they work well, come with a traceable cal certificate, etc.
I don't know that they do 0.1 degree (the data sheet says 0.5C, and I
think that's the logging accuracy), and, well, humidity sensors are of
dubious accuracy away from the middle of the range

https://www.lascarelectronics.com/easylog-data-logger-el-usb-2-lcd/

It's USB, talk-only, one reading a second, temperature, pressure, humidity -- about as simple as you can get. Perfect for data logging along with frequency standards, GPS, counters and such.

But they don't make 'em anymore. My question is what similar well-engineered, talk-only, serial or USB, temperature-pressure-humidity sensors have you run across and could recommend? Not to be picky bit no cheapo 1C or 0.5C sensors; 0.1C or better is ok.

I know it's "easy" to throw one together with an Arduino, but I'm looking for something pre-packaged, something that reliably works, out-of-the-box. I have backup plans but hope someone on the list knows some products they have used and would recommend.

We could extend the discussion to voltage and power monitors too. Or some kind of universal sensor TAPR project. But for now, let's just keep it to simple air / environmental sensing.

Thanks,
/tvb

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

I've used the Dallas (now Maxim) Thermochron iButtons in several applications. Looks like a thick coin with battery, ram and RTC built in. Even used dozens of them map temperature distribution in a aircraft fuel tank. Also available as a 1-wire device. For precision I've used Pico Technology PT105 4 channel PRD interfaces. Robert G8RPI. From: jimlux <jimlux@earthlink.net> To: time-nuts@febo.com Sent: Tuesday, 3 January 2017, 15:22 Subject: Re: [time-nuts] Temperature (environmental) sensors On 1/3/17 7:08 AM, Tom Van Baak wrote: > I have some high-end temperature and pressure instruments. But for casual use in my home and mobile timing lab I use Sparkfun Weather Stations. The old URL is: > > https://www.sparkfun.com/products/retired/10586 > Replaced by https://www.sparkfun.com/products/12081 which doesn't have the USB. By the time you add a board with a processor, you're in the $50 range.. I use these at work: https://www.lascarelectronics.com/easylog-data-logger-el-usb-rt/ Well, actually I use the EL-USB-2-LCD.. which logs to internal memory and can't log/unload data at the same time and which requires a windows program. That said, they work well, come with a traceable cal certificate, etc. I don't know that they do 0.1 degree (the data sheet says 0.5C, and I think that's the logging accuracy), and, well, humidity sensors are of dubious accuracy away from the middle of the range https://www.lascarelectronics.com/easylog-data-logger-el-usb-2-lcd/ > It's USB, talk-only, one reading a second, temperature, pressure, humidity -- about as simple as you can get. Perfect for data logging along with frequency standards, GPS, counters and such. > > But they don't make 'em anymore. My question is what similar well-engineered, talk-only, serial or USB, temperature-pressure-humidity sensors have you run across and could recommend? Not to be picky bit no cheapo 1C or 0.5C sensors; 0.1C or better is ok. > > I know it's "easy" to throw one together with an Arduino, but I'm looking for something pre-packaged, something that reliably works, out-of-the-box. I have backup plans but hope someone on the list knows some products they have used and would recommend. > > We could extend the discussion to voltage and power monitors too. Or some kind of universal sensor TAPR project. But for now, let's just keep it to simple air / environmental sensing. > > Thanks, > /tvb > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

J

jimlux

Tue, Jan 3, 2017 5:54 PM

On 1/3/17 9:15 AM, Bob Camp wrote:

Hi

There is an ever increasing pool of good sensors to put into something like this.
(More so for temperature and pressure. Humidity still is a bit of an issue.)
There’s not a lot to interface between the sensor and a USB “chip”. It’s surprising
that there aren’t more cheap / high accuracy choices out there.

the market probably isn't there for a cheap "pod" with an interface and
high accuracy..

The Lascar units (and similar $100-ish ones from others) meet most of
the existing need fairly well (e.g. monitoring the temperature of your
freezer for FDA regulatory compliance, monitoring the temp and humidity
in your ESD controlled space)..

The need for 0.1 degree C room temp measurement is, I think, fairly limited

On 1/3/17 9:15 AM, Bob Camp wrote: > Hi > > There is an ever increasing pool of good sensors to put into something like this. > (More so for temperature and pressure. Humidity still is a bit of an issue.) > There’s not a lot to interface between the sensor and a USB “chip”. It’s surprising > that there aren’t more cheap / high accuracy choices out there. > the market probably isn't there for a cheap "pod" with an interface and high accuracy.. The Lascar units (and similar $100-ish ones from others) meet most of the existing need fairly well (e.g. monitoring the temperature of your freezer for FDA regulatory compliance, monitoring the temp and humidity in your ESD controlled space).. The need for 0.1 degree C room temp measurement is, I think, fairly limited

SS

Scott Stobbe

Tue, Jan 3, 2017 6:08 PM

The good news is if the dataloger you get has a mems pressure sensor, you
will have a high precision temperature sensor, whether or not the product
software provides that resolution to you is another matter. In addition to
the piezo-resistive bridge being mechanically sensitive to diaphragm
strain, they are also great thermistors. Which ends up requiring a high
resolution temperature sensor to temperature compensate the bridge readings.

Two related but off target products I would personally recommend is picking
up a used EeePC as a usb data sink. I bought one of the originals back
almost 10 years ago, and I still find it to come in handy once in awhile
versus a rasperry pi, you could likely pick one up for nothing today. A USB
labjack works quite well to tack up a few thermistors to a DUT for logging,
it also has full driver support for linux/windows with a python interface
(other languages too).

On Tue, Jan 3, 2017 at 10:08 AM, Tom Van Baak tvb@leapsecond.com wrote:

I have some high-end temperature and pressure instruments. But for casual
use in my home and mobile timing lab I use Sparkfun Weather Stations. The
old URL is:

 https://www.sparkfun.com/products/retired/10586

It's USB, talk-only, one reading a second, temperature, pressure, humidity
-- about as simple as you can get. Perfect for data logging along with
frequency standards, GPS, counters and such.

But they don't make 'em anymore. My question is what similar
well-engineered, talk-only, serial or USB, temperature-pressure-humidity
sensors have you run across and could recommend? Not to be picky bit no
cheapo 1C or 0.5C sensors; 0.1C or better is ok.

I know it's "easy" to throw one together with an Arduino, but I'm looking
for something pre-packaged, something that reliably works, out-of-the-box.
I have backup plans but hope someone on the list knows some products they
have used and would recommend.

We could extend the discussion to voltage and power monitors too. Or some
kind of universal sensor TAPR project. But for now, let's just keep it to
simple air / environmental sensing.

Thanks,
/tvb

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.

The good news is if the dataloger you get has a mems pressure sensor, you will have a high precision temperature sensor, whether or not the product software provides that resolution to you is another matter. In addition to the piezo-resistive bridge being mechanically sensitive to diaphragm strain, they are also great thermistors. Which ends up requiring a high resolution temperature sensor to temperature compensate the bridge readings. Two related but off target products I would personally recommend is picking up a used EeePC as a usb data sink. I bought one of the originals back almost 10 years ago, and I still find it to come in handy once in awhile versus a rasperry pi, you could likely pick one up for nothing today. A USB labjack works quite well to tack up a few thermistors to a DUT for logging, it also has full driver support for linux/windows with a python interface (other languages too). On Tue, Jan 3, 2017 at 10:08 AM, Tom Van Baak <tvb@leapsecond.com> wrote: > I have some high-end temperature and pressure instruments. But for casual > use in my home and mobile timing lab I use Sparkfun Weather Stations. The > old URL is: > > https://www.sparkfun.com/products/retired/10586 > > It's USB, talk-only, one reading a second, temperature, pressure, humidity > -- about as simple as you can get. Perfect for data logging along with > frequency standards, GPS, counters and such. > > But they don't make 'em anymore. My question is what similar > well-engineered, talk-only, serial or USB, temperature-pressure-humidity > sensors have you run across and could recommend? Not to be picky bit no > cheapo 1C or 0.5C sensors; 0.1C or better is ok. > > I know it's "easy" to throw one together with an Arduino, but I'm looking > for something pre-packaged, something that reliably works, out-of-the-box. > I have backup plans but hope someone on the list knows some products they > have used and would recommend. > > We could extend the discussion to voltage and power monitors too. Or some > kind of universal sensor TAPR project. But for now, let's just keep it to > simple air / environmental sensing. > > Thanks, > /tvb > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. >

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Temperature (environmental) sensors