Hach AS950 Fonctionnement page 12

For example "15, 15" identifies that the primary logging interval is 15 minutes and the
secondary logging interval is 15 minutes.
b. Select the source of the measurement.
c. Enter the logging intervals, then push OK. Options: 1, 2, 3, 5, 6, 10, 12, 15, 20, 30 or
60 minutes.
• Primary logging interval—The logging interval that is used when no alarm is configured for the
measurement. If an alarm is configured for the measurement, the primary logging interval is
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.
4.1.4 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
Low/Low
Low
High
High/High
Rate of Change Sets the alarm setpoint, deadband for the setpoint and the amount of time for
12 English
N O T I C E
Pump forward
Pump reverse
Sample complete
Description
Sets the lowest alarm setpoint and the deadband for the lowest alarm
setpoint.
Sets the low alarm setpoint and the deadband for the low alarm setpoint.
Sets the high alarm setpoint and the deadband for the high alarm setpoint.
Sets the highest alarm setpoint and the deadband for the highest alarm
setpoint.
the rate of change (rain only).
Entire sample
Missed sample
Purge error
Configure data logging
Figure 2 for an example of a high alarm setpoint.
Distributor error
Pump fault
Full bottle
on page 11.