sowacs: soil water moisture content measurement systems and sensors Google Group

Re: Heat and pollutant transport in groundwater.

2009-08-24T16:43:20Z

In case you are not already aware, the article is listed on the stuttgart university website

[link]

so contacting the university might help you locate it.

regards

Terry McBurney

----- Original Message -----
From: Priyantha B Kulasekera

Heat and pollutant transport in groundwater.

2009-08-24T15:18:41Z

Dear friends,
I am a Grad student and is looking for a copy of the following article.
Modellierung des grossraumigen Warme-und Schadstofftransports im Grundwasser Tatigkeitsbericht 1984/85
Translated title: Modeling large area heat and pollutant transport in groundwater
Kobus-Heimut
Stuggart/Institut fur Wasserbau der Universitat Stuggart

Re: Installing Theta Probe in Datalogger Campbell CR1000

2009-05-18T09:52:59Z

Dear Sebastian,

Thank you very much for sending the program.

Schöne Gruesse

Wenceslau

Em Seg, Maio 18, 2009 3:16 am, Sebastian Gimper escreveu:
- Hello Wenceslau Teixeira, IÂ´ve a programm. You can use it as a example.
- The wiring diagramm you will in the programm.
- Greetings from Germany

Re: Installing Theta Probe in Datalogger Campbell CR1000

2009-05-18T07:16:35Z

Hello Wenceslau Teixeira, I´ve a programm. You can use it as a example.
The wiring diagramm you will in the programm.
Greetings from Germany

Am Fr 15.05.2009 10:16 schrieb Wenceslau Geraldes Teixeira
<wences...@cpaa.embrapa.br>:

Installing Theta Probe in Datalogger Campbell CR1000

2009-05-15T08:17:08Z

Dear Sowacs Members,
Do someone have experienced to install the Theta Probe (from Delta T) in Campbell
Logger CR1000) ?
If anybody can give some tips (or the wire diagram)
I thanks in advance.
Wenceslau Teixeira
Embrapa Amazônia Ocidental
Amazon - Brazil

Installing Theta Probe in Datalogger Campbell CR1000

2009-05-15T08:16:54Z

Symposium on Soil Water Measurement Using Capacitance, Impedance and TDT

2009-05-14T09:41:14Z

Hello All
This is to inform you of the following symposium, which may be of interest.

The Third International Symposium on Soil Water Measurement Using
Capacitance, Impedance and Time Domain Transmission
April 7-10, 2010;
Murcia, Spain
The web site is:
[link]
For additional information, please contact: symposium2...@cebas.csic.es;

Re: Experiences with using CS616-L Soil Moisture Content Sensors in Sandy/gravel soil

2008-12-06T00:11:36Z

I work for a company that sells and installs the CS616 on occassion.
I would highly recommend the Campbell Dataloggers. The new systems
such as the CR800 and CR1000 are very reliable and will meet your
requirements. If you want to talk to an expert on the CS616 send an
email to Dave Meek at Campbell Scientific he is one of the soil

Re: Experiences with using CS616-L Soil Moisture Content Sensors in Sandy/gravel soil

2008-10-28T15:02:23Z

Hi Michael
As explained by several experienced scientists earlier, CS 616 is a reliable instrument. I had used it to continuously monitor water content data for the last three years without much problem. However, they need to be field calibrated for better results. One of the easy methods is to calibrate it against the TDR readings, which gives a fair estimation of water content when the equation developed by Topp et al. is used.

Re: Experiences with using CS616-L Soil Moisture Content Sensors in Sandy/gravel soil

2008-10-27T20:33:41Z

Hi Micheal
I'm using them in a sandy/gravelly soil in southeastern Manitoba. I'm quite
satisfied about them, they are producing stable results (no sudden
changes/noise), just for one year though. However, as every instrument they
have their disadvantages:
- they are fixed in one location: if the location is not representative of

Re: Experiences with using CS616-L Soil Moisture Content Sensors in Sandy/gravel soil

2008-10-27T06:39:32Z

Hi Michael,

I have used both the CS616 and the respective loggers from Campbell (I
think the CR-10 or so, but it's been a while...). They have been
running since late 2002, so in terms of the lifetime of the sensors, I
am not unhappy. Some of the loggers failed, though, and we had to
replace them. But this wasn't much worse than with other systems.

Re: Experiences with using CS616-L Soil Moisture Content Sensors in Sandy/gravel soil

2008-10-24T16:47:38Z

Dear Michael
I want to answer your questions to some extent how I can, I wish it will be usefull.
1. I didn't use campbell system but I have some good sugestions:
The time domain reflectometer is a system wich sends a electromagnetic signal to soil, and however if there isn't any iron or other yonic principles (water dielectric=81) water is the most effective on this signal (water dielectric may change by tempreture amoun 2 or 3 points), when signal recive to water molucols the rise time of signal will clopse and view a decrese about some micro seconds, and it is the point you can find water content by this.

Experiences with using CS616-L Soil Moisture Content Sensors in Sandy/gravel soil

2008-10-21T11:09:38Z

Hello all,

Michael here, I am a graduate student at the Galway Mayo Institute of
Technology in Galway, Ireland. I am researching combined heat and
moisture movement in the Irish soils surrounding underground heat
exchangers for heat pumping. I have installed temperature and moisture
sensors in profiles surrounding heat exchager pipes in the ground, to

Re: Interfacing Theta probes to a datalogger

2008-06-05T05:16:19Z

Dear all,
I am a PhD studet investigating ecohydrology of rehabilitated mined
land in Western Australia. I am using Theta probes (Delta T) hooked to
a Campbell Scientifc datalogger (CR1000). When I did a test run of the
system with the theta probes in their casings, I got quite variable
voltage readings ranging from -24 to about -68 mV (see attachment).

TDR Noise: Grounding, Bonding & Shielding

2008-05-26T02:44:18Z

Ah, two of my favorite topics: TDR and "grounding, bonding and shielding."
Without an image, it is difficult to say for sure, but the
description sounds like plain old intermittent AC mains interference.
It could also be a "ground loop:" current flowing on the shield
connecting pieces of equipment at different potentials. This is