Metex 8760CLP Total Free Chlorine & pH Analyzer - Manual (Page 53)

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53
Fault Alarm
A fault alarm for an input will be set when anything goes wrong with that input. Something is wrong
with an input if the input is off-scale or an unacknowledged error message exists for that input. Caution
messages do not cause a fault alarm.
To use an alarm as a fault alarm, select [FUNC] from the alarm menu, then select [Flt]. To enable the
alarm, make sure the on/off switch is set to [on]. Also, set the input in the alarm menu to the desired
input, either chlorine, pH or temperature.
The set-point and differential for the alarm have no effect when the alarm is used as a fault alarm.
Using Alarms for On/Off Control
The alarms can also be used for process control; the alarm contacts will then function as on/off signals
for switches controlling a valve, pump, or motor. The set-point determines the control point of the
system and the setting of the differential controls the amount of corrective action before a controlled
shut-off occurs.