[OT] 433MHz remote measurement modules

[kender]

zw3100 data sheet

My question is not directly related to microcontrollers. I’m posting this question here, because you, guys, have seen a lot of instrumentation in your travels.

I’m looking for a wireless remote measurement system that communicates at 433MHz or lower frequency. FCC compliance is not a problem, because it will be working for one month, and it will be shielded from the outside world by a chainlink fence.

The purpose of the system is to measure and transmit gas pressure few times a minute for a month. The range is 50 to 100 meters. 4 or 6 units per base station. Of course, I can add my own pressure sensor to a system that has an A/D.

I’m looking for something that’s pretty small – about the size of a 9V battery

I guess, I could put such system together myself, but I’ve got a very short notice, and I will need to field this system very soon.

Could anyone recommend?

Thanks,
Nick

 

[IanP]

Maybe you can do something similar to this:


Regards,
IanP

 

[kender]

Ian, thanks for the tip. Unfortunately, I couldn't find the datasheet for the ZW-3100 transmitter. I forgot to mention in the original post that I need to have 6 transmitters working within 1m from each-other. They don't have to make measurements simultaneously. Unfortunately, I can't run wires and transmit 6 measurements through one (1) transmitter.

 

[IanP]

Here are both data sheets:
**broken link removed**
**broken link removed**
http://electus.vividcluster.global.net.au/products_uploaded/ZW3102(mod).pdf
http://electus.vividcluster.global.net.au/products_uploaded/ZW3100(mod).pdf

You may consider fitting all six units (pressure Tx+microcontroller) with transmitter and receiver pair, give each unit unique name (or number) and interrogate them in a sequence 1, 2, 3, 4, 5 and 6, .. , 1, 2, 3 .. and so on ..

Regards,
IanP

 

[kender]

You may consider fitting all six units [...] with transmitter and receiver pair ...

I'm looking for such a wonder from the very beginning. It has to be small, though.