If the MP30 is signaling the MP10 too frequently, the operator can slow
down the pump flow rate by using the DOWN key (effectively increas-
ing the pump refill time period). MP30 probe position may also be
varied to provide a buffer zone for your draw-down limit and gauge
rate of pumping effect on water level in the well.
If the selected maximum drawdown level is being reached even with
the lowest desirable pump flow rate more drawdown may be required
to attain equilibration, or a passive sampling approach may be required.
In passive sampling, used where well recovery is extremely slow, sam-
ples are taken after just a few pump strokes sufficient to purge the pump
and tubing volumes.
Additional information on the MP30 is given in the MP30 O&M
manual
OPERATION
ID Mode
Figure 6 shows an example of the MP10 in ID time set mode.
Once you've used the MP10 in MP mode and found proper settings for
your wells, subsequent sampling events are speeded along by using the
controller in ID mode. Once the controller is turned on, a single press
of the MODE key places the controller in ID time set mode (the default
initial mode is MP mode). This mode allows the user to enter a 3-digit
ID, which then is translated into the correct flow settings (CPM and
refill / discharge time settings) for that well.
Figure 7 MP10 ID Set Mode
MicroPurge Basics Controller
MP Micro Purge
ID ID Time Set
MN Manual Time Set
LVL LevelShutoff
CYCLE
I I
MODE
CPM/Value
Flow/Value
Flow/Value
Hold/Sample
/Cycle
Start/Stop
ID/MN/MP/
Battery
Mode
CPM
ID
Time
Refill
Discharge
00.1 103 10.0
MP CPM4
>05.0
D
D
E
E
13
