Veris Technologies pH Manager - Operating Instructions - Manual (Page 28)

Pub.# OM17-MSP-pH
3-20
From this screen, pressing the Engage key or Enter 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:
Figure 19
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:
Figure 20
“Cycling” means the sampler assembly is in the process of washing, and lowering for soil sampling.
After a core has been collected and is being held against the electrodes, the status text will change
to the following:
Figure 21
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 that
indicates the number of seconds the reading has required. When the maximum log time is
reached, the unit initiates a new sample cycle (refer to Controller setup for adjusting the log time).
Figure 22