Data Loggers

Bob Sweet

on which manuf. to look for?

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hvacfreak

bang for the buck

Supco has my vote for HVAC apps. I have a volt/amps model and it has helped me solve some "intermitent" problems.

Constantin

Depends... what are you trying to datalog?

Such systems range from simple little temp. dataloggers that you can leave on site and then later stick into your PC via the USB port all the way to little computers that can be attached to the internet. Some data loggers like the OnWatch are even specifically tailored to capture events with burners/boilers.

I happen to be very happy with my WEL from Phil Malone. However, that is a powerful solution and it may be overkill for what you are looking for.

Brad White

Onset Computer

I have used Onset "Hobo" data loggers for years now. ME I believe, is also an officianado. About the size of a tic-tac box, these little gems coupled with software give micro and macro views of events, temperature, humidity, current draw, etc. all over time.

At between $65 and $95 for most HVAC purposes, plus the software, a few hundred dollars is all it takes to get started. You can build on this over time as your needs change.

For building-wide, I am looking into the WEL (Web Energy Logger) by Phil Malone, as Constantin pointed out.

But the Onset Hobos have served me well on trending and troubleshooting jobs for years.

[Deleted User]

What Brad said...

Hobo Data Loggers by Onset Computers. Best dang investment you'll ever make. They have a new model out that does multi tasking. Larger than the old, but not unmanageable.

ME

hr

I have an Eatherton hand down HOBO

and it works great for basic temperature recording.

Keep an eye out for the next PHC News issue. My column "How Hot Is It" shows a bunch of unique temperature devices.

hot rod

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hr

I have an Eatherton hand me down HOBO

and it works great for basic temperature recording.

Keep an eye out for the next PHC News issue. My column "How Hot Is It" shows a bunch of unique temperature devices.

hot rod

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Bob Sweet

Thanks for the info

The Hobo looks pretty cool, when they say 4 channel, does that mean that it can log four seperate readings at one time? If thats what it can do , thats exactly what I'm looking for.

Thanks

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[Deleted User]

Yup...

4 channels at once, at the sample rate of your choice from 1/second all the way up to once per year if I'm not mistaken. All channels take a sample at the same time, at the same rate.

I'm learning how to use PLC's for data logging as well. A bit more expensive, but more robust and up to 8 or 16 points of input, and can be temperature, voltage, amperage, pressure, on/off... All the stuff us wet heads need to log.

HR, I can't think of anyone more deserving of a temperature recording device than yourself. I look forward to all your articles.

ME