11
Configuration
4.5 Alarms
4.5.1 pH alarms
To set the alarms, enter the upper and lower tolerance values with respect to the value entered as the
setpoint and the time from which, with the reading outside tolerance range, the alarm must be activated. If
the value = 0, the alarm is disabled. The alarms will activate only if the Control is ON.
pH
SP
07.00
CAL
CONTROL
ALARM
REGISTER
PH ALARM
Reset: N
o
Stop: pH
pH +
1.00
025
s
pH -
0.50
060
s
ENT
pH + 1.00: the alarm will activate when
the reading is 1.00 above the setpoint
value for 25 seconds
pH - 0.5: the alarm will activate when
the reading is 0.50 below the setpoint
for 60 seconds
Reset: enables automatic alarm reset when the reading is back within the permissible values.
Stop: enables shutting down of the dosing control output for the alarmed control parameter, for all or none.
4.5.2 Zero flow alarm
An alarm can be set to warn that there is no flow in the main pipe.
If the value = 0, the alarm is disabled.
Reset:
enables automatic alarm reset when the reading is back within the permissible values.
Stop:
enables the dosing control outputs to be shut down.
4.5.3 Flow detector alarm
When an external sensor holder is used through which a water sample is made to pass, and this has a
flow detector, an alarm can be configured to warn in the event that no water sample reaches the external
sensor holder.
If the value = 0, the alarm is disabled.
ENT
m3h
0.20 %
SP
CAL
CONTROL
ALARM
ALARM DETECTOR
REGISTER
Q
ALARM
o
Stop: None
Q = 0
200
s
Reset: N
Bear in mind that if there are any filters between the injection point and the sensor, the calculation of 10
metres x 1 m/s = 10 seconds will no longer be valid.
