Electric conductivity - WTW cond340i

Parameter to be measured:

Electric conductivity (EC)

Method:

handheld EC meter

Equipment:

WTW cond 340i

Advantages:

• 800 measurements can be stored and later downloaded
• you can choose the temporal resolution of automatic measurements
• can also be installed in the field and log continuously for several days (depending on the chosen temporal resolution)

Disadvantages:

Sometimes the connection between laptop and EC meter fails before or while downloading the data and a number of datasets is not transmitted. Uninstalling AND re-installation of the software or downloading 2 or 3 times ensures that you have the complete dataset on your computer (but you might need to combine the files). Functions like configuring and starting the logging need awkward key-combinations that are hard to remember.

What to watch out for:

see disadvantages If you want 5 sec logging interval, choose >> 5 '' <<, not >> 5 ' <<. Obvious you think? So did we. Several times.

the cell constant has to be recalibrated periodically

Links

Projects that used the above equipment:

• Malalcahuello

Other related web sites:

• wtw: Manual
• newer model: Electric conductivity - WTW 3310