Veris Technologies MSP EC and pH (1997-2008 CF card drive 1.10M) - Operating Instructions - Manual (Page 36)

Veris Technologies
Pub. #OM MSP03-1
36
See the troubleshooting section if this occurs frequently.
The Veris MSP pH Manager uses two electrodes for optimal data quality. If there is a difference of
0.75 or greater between the final electrode readings, an audible alarm will beep, informing the
operator of the erroneous reading.
To pause the data collection process at any time (but keep the same file), press the 1 key. Once the
sampling process has completed its cycle, it will disengage and the status text message will indicate
disengaged. (press 1 to start cycling again) If the system no longer senses a speed signal from the
GPS, it will also disengage. NOTE: do not depend on the GPS speed signal for disengagement.
Before inspecting or working around any component of the system, press the 1 key before
exiting the vehicle. Sporadic GPS signals may simulate movement and initiate the cycling
process, resulting in possible entanglement and injury.
If TAP or DI are selected as the wash water type, the water baseline process will be repeated every
40 cycles following the next engage press. If the pH during the cycling sequence does not get within
0.5 of the baseline pH, an audible alarm will sound and the pH labels will blink.
pH Offset and Settings Menu
While the instrument is in pH data acquisition, the pH sampler settings can be adjusted without exiting
the current file. Additionally, a correction can be applied to each electrode’s pH shown on the screen.
Occasionally, the pH readings shown on the screen may differ from those expected in the field. If this
is the case, the pH shown on the screen can be adjusted up or down. To enter the settings screen,
make sure message in the upper right of the screen says DISENGAGED. Press the 3 key. The
following screen will display:
This screen allows you to adjust the offset that will be applied to channel 1’s electrode
reading. The offset is adjustable in 0.5 pH increments up to +/- 2.00 pH. NOTE: The
instrument DOES NOT apply this offset to the extracted file. Only the readings seen on the
screen will be affected. Press 1 or 2 to adjust the reading down or up, and 3 to confirm the
offset and proceed to the next screen.
Similarly, an offset can be applied to channel 2’s electrode. Press 1 or 2 to adjust the offset
down or up, and 3 to confirm the offset and proceed to the next screen.
Sampling time is the duration that the sampler assembly is in the soil. Typically 2 seconds is
adequate. In soil conditions that do not produce a firm core, this time may need to be set at 3
seconds in order to allow soil to begin flowing through cutting shoe. If soil conditions result in a very
firm core, the sampling time may be reduced to 1 second. Press 1 or 2 to adjust the sample time,
press 3 to continue to the next screen.