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Hi all -
As usual I have the highest confidence on this lists members to suggest some ways to accomplish this new task. Thanks all in advance.
We have some retractable Thermal Massflows installed on various points of a grid of water conduits. Those conduits have I.D. of 3 to 108 inches and insertion fitting are 1inch Fem. NPT.
The flowmeters are giving 4/20mA outputs. We need :
1. Log average flow for periods of...Ex: 10s every 15 min. during a period of 100 days...
2. Retrieve those Data and visualise them on an Excel spreadsheet
3. Draw graphics and print them...
All this is not much of a challenge but :
A . Instruments are located in manholes on busy streets
B. All instruments must be battery operated.
C. All electronics must be -20C to + 40C
D. We want to retreive the data with a laptop when we pass over the manhole with a service vehicle ... (could stop for a few minutes...)
E. The battery should be an ordinairy lead/acid type (like golf carts, etc)
Your help will be greatly apreciated.
Pierre Desrochers
System Integrator
Integral Instrumentation Inc
[email protected]
As usual I have the highest confidence on this lists members to suggest some ways to accomplish this new task. Thanks all in advance.
We have some retractable Thermal Massflows installed on various points of a grid of water conduits. Those conduits have I.D. of 3 to 108 inches and insertion fitting are 1inch Fem. NPT.
The flowmeters are giving 4/20mA outputs. We need :
1. Log average flow for periods of...Ex: 10s every 15 min. during a period of 100 days...
2. Retrieve those Data and visualise them on an Excel spreadsheet
3. Draw graphics and print them...
All this is not much of a challenge but :
A . Instruments are located in manholes on busy streets
B. All instruments must be battery operated.
C. All electronics must be -20C to + 40C
D. We want to retreive the data with a laptop when we pass over the manhole with a service vehicle ... (could stop for a few minutes...)
E. The battery should be an ordinairy lead/acid type (like golf carts, etc)
Your help will be greatly apreciated.
Pierre Desrochers
System Integrator
Integral Instrumentation Inc
[email protected]