Select And Configure The Alarms; Figure 2 - Hach AS950 Grundfunktionen

used when the alarm for the measurement is not active or when the alarm configuration is not
set to Switch Log Interval.
• Secondary logging interval—The logging interval that is used when the alarm for the
measurement is active and the alarm is set to Switch Log Interval.

Select and configure the alarms

Configure data logging before the alarms are configured.
Select and configure the alarms that show on the Status screen and are recorded to the alarm log.
There are two types of alarms: system alarms and channel alarms. The list of system alarms follows:
Program start
Program end
Bottle change
The channel alarms are setpoint alarms for the recorded measurements (channels), such as the pH,
level and power supply voltage.
Note: Channel alarms are set to on or off at the logging interval. Refer to
System alarms occur in real time.
1. Push MENU.
2. Select Programming>Alarm Programming.
3. Add a system alarm as follows:
a. Select System Alarms>Add New Alarm>[Select System Alarm].
b. Push Next.
4. Add a channel alarm as follows:
a. Select Channel Alarms>Add New Alarm>[Select Channel Alarm], then push Next.
Note: The number that follows a channel alarm identifies the source sensor. For example, Temp 2 is the
temperature measurement supplied by Sensor 2. An IO number that follows a channel alarm identifies the
analog inputs of the optional IO9000 module.
5. Select an option, then push Next. Refer to
Option Description
Low/Low Sets the lowest alarm setpoint and the deadband for the lowest alarm setpoint.
Low Sets the low alarm setpoint and the deadband for the low alarm setpoint.
High Sets the high alarm setpoint and the deadband for the high alarm setpoint.
High/High Sets the highest alarm setpoint and the deadband for the highest alarm setpoint.
Rate of Change Sets the alarm setpoint, deadband for the setpoint and the amount of time for the rate of
change (rain only).
6. Select an option, then push OK.
Note: More options show when the optional IO9000 module is connected to the AUX port. Refer to the
IO9000 module documentation.
Option
Log Only
Switch Log Interval Sets the data logging interval to change to the secondary logging interval while the
N O T I C E
Pump forward
Pump reverse
Sample complete
Description
Sets the alarm to be recorded to the alarm log when the alarm occurs.
alarm is active. Refer to Configure data logging
Entire sample
Missed sample
Purge error
Configure data logging

Figure 2

for an example of a high alarm setpoint.
on page 10.
Distributor error
Pump fault
Full bottle
on page 10.
English 11