Veris Technologies pH Detector - Operating Instructions - Manual (Page 11)

OM17-pH Detector
3-1
SECTION 3
Field Operations
Testing functions:
Turn external controller
power switch on, and check operation using status LED’s. Power light
should light, wash LED should light when wash pump switch is activated, and limit switch LED’s
should light when they are deployed. (In order to active the lower switch (#1), probe must be in
soil.)
Figure 1
Figure 2a and 2b
Power switch
Manual
wash switch
Power LED
Wash LED
Done LED
(measurement
complete)
In Progress LED
(measurement
underway)
Lower limit
switch (#1)
LED
Upper limit
switch (#2)
LED
limit switches:
upper (#2)
lower (#1)