The BL981411 pH controller has been
designed for easy, affordable installation in
tight spaces, ideal for simple and effective
process control. The unit is provided with
high impedance pH input and can be used
with any pH electrode with a standard
BNC connector. Measurements are clearly
displayed on the LCD, while the status LED
indicates operating mode.
The BL981411 is also provided with a dosing
relay. Selecting acid dosing will cause the
relay to activate when the pH reading is
higher than the setpoint. If the basic dosing
is selected, the relay is activated when the
pH reading falls below the setpoint.
Setpoint adjustment (from 0 to 14 pH) and
calibration procedures are easily performed
with trimmers on the front panel. Users can
choose from automatic or manual dosing
modes with a switch on the front panel.
Manual control is particularly useful during
maintenance operations, because it permits
operators to enable or disable the dosing
relay according to need. An overtime control
system advises users when the relay is
active too long, to help prevent overdosing.