Additional information on the MP30 is given in the MP30 O&M manual
Operation
ID Mode
Figure 6 shows an example of the MP50 in ID time set mode. Once you've used the
MP50 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 MP50 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
E
14
If the MP30 is signaling the MP50 too frequently, the operator can slow down the pump flow
rate by using the DOWN key (effectively increasing the pump refill time period). MP30 probe
position may also be varied to provide a buffer zone for your drawdown 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 app-
roach 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.
Summary of Contents for MP50
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