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Data Logging Question

Data Logging Question

(OP)
Hello Everyone,

I have been a little problem to solve and I could do with some input.

I need to trend a vacuum pressure level inside a tank at approximately 10Hz (every 0.1s). I was going to go with a Allen Bradley PLC and a sensor with an analogue output of 4-20mA or 0-10volt but the budget is not there for this as its a new company and they haven't budgeted for the initial software cost. This is only for R&D so I can choose any hardware I like as long as the cost is reasonable.

I was looking at a sensor like this to use "SPT25-20-V30D PRESS XMTR -14.7 TO 30 PSI 4-20mA 1/4in MNPT DIN L-CONN" from Automation Direct

http://www.automationdirect.co.uk/acatalog/dfgsdfg...

Then try and use one of these data loggers from Pico Tech.

http://www.picotech.com/precision-data-acquisition...

Ideally the data can be manipulated in excel but if not as long as it can bring up a nice graph would be good. Has anybody any other ideas?


Thanks Trevor

RE: Data Logging Question

Sounds like you're willing to have a host PC connected to your logger. In that case there are plenty of suitable loggers out there, many of them a bit cheaper and simpler than the one you propose. For example, the LabJack U12. There are smaller, more dedicated purpose devices, but I'm not sure if they'll quite match your requirements. For example, the DATAQ EL-USB-4 is close, but only logs at 1Hz.

On the transducer front, take your pick! Note though that AutomationDirect is just a very pervasive search engine result aggregater, not a manufacturer. Follow the links a bit further to find other more relevant suppliers and manufacturers.

RE: Data Logging Question

Did you see the "Click" line of PLC's...
Heck I've been using the Arduino board $20-30 for a bunch of work stuff lately.. Test fixtures,etc...

RE: Data Logging Question

I use the Arduino with ethernet shield to log data, then send it along to a server on querying the embedded web server.

RE: Data Logging Question

I have also used the redlion data station, you can stack a analog card on and data log the info to the data station, it would then be available over tcp/ip or they have a built in web server the opens up in internet explorer. Pretty solid hardware, software is free.

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