Dear Experts,
Here is a tough question for you. I’ve to make several outdoor temperature measurements all around the world. Therefore I’m traveling by plane with a 34972A, several PT100 and a lot of cables. This is heavy and thus costy. I’m dreaming of a PT100 that can operate by Wifi and get rid of all cables. Simple no ? But I’ve been digging internet and no one seems to sell such device with a precision of 0.05°C. Therefore I’m thinking that I could build one myself.
To meet the accuracy, I need a precise DMM with at least 5 ½ digit :
OPTION 1 : U2741A has a USB connection that I can connect to a tiny computer like Raspberry PI and also connect a Wifi Module.
Issue 1 : Raspberry PI are linux world and doesn’t have driver for U2741A
Issue 2 : Raspberry PI have only one USB port.
Solution 1 : Use a Windows embded computer … possible but heavy.
OPTION 2 : M9181A is very very light and it is DC powered. A dream !
Issue 1 : Find a PXI to PCI adaptor and connect to a computer ???
OPTION 3 : 34972a strip the heavy casing a use the LAN interface to plug it to a wifi router. Rather expensive.
OPTION 4 : Ask mister KeySight to develop it : Take the M9181A, add a battery, add the LAN module of the 34972A, add a wifi chip and you’re done. Isn’t it a great R&D idea ? I’m sure it is going to be a hit.
More seriously, doesn’t anyone has a good idea to solve this issue ?
Regards,
Vincent
Here is a tough question for you. I’ve to make several outdoor temperature measurements all around the world. Therefore I’m traveling by plane with a 34972A, several PT100 and a lot of cables. This is heavy and thus costy. I’m dreaming of a PT100 that can operate by Wifi and get rid of all cables. Simple no ? But I’ve been digging internet and no one seems to sell such device with a precision of 0.05°C. Therefore I’m thinking that I could build one myself.
To meet the accuracy, I need a precise DMM with at least 5 ½ digit :
OPTION 1 : U2741A has a USB connection that I can connect to a tiny computer like Raspberry PI and also connect a Wifi Module.
Issue 1 : Raspberry PI are linux world and doesn’t have driver for U2741A
Issue 2 : Raspberry PI have only one USB port.
Solution 1 : Use a Windows embded computer … possible but heavy.
OPTION 2 : M9181A is very very light and it is DC powered. A dream !
Issue 1 : Find a PXI to PCI adaptor and connect to a computer ???
OPTION 3 : 34972a strip the heavy casing a use the LAN interface to plug it to a wifi router. Rather expensive.
OPTION 4 : Ask mister KeySight to develop it : Take the M9181A, add a battery, add the LAN module of the 34972A, add a wifi chip and you’re done. Isn’t it a great R&D idea ? I’m sure it is going to be a hit.
More seriously, doesn’t anyone has a good idea to solve this issue ?
Regards,
Vincent
1:
It has two USB ports
You could use one for a wifi adapter , and one for the DMM
2:
Have a lok at Alex's https://github.com/alexforencich/python-usbtmc
and
http://www.raspberrypi.org/forums/viewtopic.php?f=66&t=60784
Sidenote
The RasPi can be used with linux-gpib and an Agilent USB GPIB adapter , to do real GPIB
I know , as i submitted the patch to linux-gpib to get it running
See
http://www.eevblog.com/forum/reviews/using-a-raspberry-pi-with-linux-gpib-and-a-beiming-or-agilent-usb-gpib-adapter/
/Bingo