0000136965
Rev. 1.1
8
3.5__Dosing and adjustment examples
Dosing Operation/Pause (ON-OFF)
The instrument permits automatic control and modification of
the chemical measurement through Set Point 1, adjusting
dosing by means of On-Off Relay 1.
The dosing example on the side can be set using the following
parameters:
Set Point 1 = 7.20 pH
Type of Dosing = Alkaline
Hysteresis = 0.40
The instrument will begin dosing for values below 7.20 and
will stop dosing when above 7.60. If Acid is set for Type of Dosing, dosing will be the exact opposite: dosing will
begin above 7.20 and will stop below 6.80 pH. The instrument permits two independent dosings by setting Set
Point 2 associated with Relay 2.
Dosing with delays
The instrument permits dosing start and end delays. The dosing
example on the side can be set using the following parameters:
Delay Start (D-1) = 5 minutes
Delay End (D-2) = 5 minutes
This function is available for all of the previously described
settings: ON-OFF, Timed, Prop.
Note: The variables shown above are independently available for
Set Point 1 and Set Point 2.
4
TROUBLESHOOTING
The device does not come on…
o
Make sure that the power cables are correctly connected
o
Check whether the power supply is present
The display does not light up…
o
Regulate the display contrast
The chemical measurement function does not work…
o
Check the probe connection
o
Calibrate as instructed in the manual
o
Replace the probe
The mA output does not change…
o
Check the cable connection
o
Use the “Manual Control” function in the main menu to check whether the output produces the
desired effect.
o
Check the electrical characteristics of the remote device (maximum load: 500 ohm).
The relays do not work…
o
Check whether the instrument is correctly powered
o
Check the settings in the main menu
Note:
If the anomaly persists, please contact the supplier.
