Veris Technologies MSP EC and pH (1997-2008 CF card drive 1.10M) - Operating Instructions - Manual (Page 35)

Veris Technologies
Pub. #OM MSP03-1
35
pH and EC (option 3):
The display is showing the pH values from the pH electrodes, conductivity of the top 1’ (30 cm) and
top 3’ (90 cm) of the soil, and whether you have GPS or DGPS (differentially corrected) signal. At
any time during the mapping process, you can press the 4 key to stop the file. If you create more
than one file from the same field, you can bring the files into a spreadsheet program and combine
them prior to mapping.
From this screen, pressing the 1 key as you drive forward will initiate the automatic sampling process.
The software requires movement indicated by the GPS receiver in order to cycle. Speed must
be detected within 5 seconds after pressing 1 or the system will disengage.
If TAP or DI were selected as the wash water type above, the controller will go through a wash
baseline process after engage is pressed for the first time. The status text will change to the
following:
After the pH readings settle (or if RO was selected as the wash water type), the unit will continue
cycling and display the following screen:
“Cycling” means the sampler assembly is in the process of locating its position, washing, and
beginning to lower for soil sampling. After a core has been collected and is being held against the
electrodes, the status text will change to the following:
The pH readings on the display show what each electrode is reading at every second. The sampler
will hold the soil against the electrodes and continue to record pH until the readings settle. The
minimum recording time is 7 seconds; the maximum time is determined in the pH settings menu. The
pH values that are recorded are the final values at the end of the logging duration. (last reading on
the display before the “Cycling” status appears). The final pH value is logged along with the DGPS
position where the sample was collected.
If the electrodes take longer than 10 seconds to settle, a warning will appear by the readings:
and again at 20 seconds:
DGPS indicator:
NONE, _GPS,
DGPS Shallow and
Deep EC
readings
pH readings from each
electrode if equipped
with pH module
Status of pH
sampling
mechanism Speed in
MPH