Here is the opportunity:

We have a chamber in the middle of nowhere that has an altitude valve, and we wish to monitor the pressures on the upstream and downstream sides.

The information will be sent by a cellular modem to the water plant.

We need two battery operated pressure transmitters
(capable of operation continuously for one or two months between replacement of batteries) with a range of 0 to 300 PSI.

Any suggestions as to suppliers?

Dennis
Dennis.phair @ hatchmott dot com

 

Rosemount have a range of transmitters that put out a voltage instead of current for low power applications.

Another possibility is to just sample the pressure, e.g. every 5 minutes power up a regular transmitter, wait for the signal to settle, then power down.

Roy