Xylem SDI-12 Data Logger iRIS 220, iRIS 320, iRIS 350, iRIS 150, iRIS 300 - Manual (Page 38)

iRIS Datalogger User Guide V1.50
32 iQuest (NZ) Ltd - PO Box 15169, Hamilton, New Zealand Tel: +64 7 857-0810 Fax: +64 7 857-0811 Email: [email protected]
Option 1
When this option is selected you will be prompted to enable/disable the alarm.
> Enable (0:No 1:Yes)=
Enter a value of 0 to disable the alarm. Enter a value of 1 to enable it.
Option 2
When this option is selected you will be prompted to enter a trigger level for the alarm.
> Trigger=
Enter a value in engineering units that you want to use as the trigger point for the alarm. When the scaled
value crosses this limit the alarm will become active. The trigger direction is determined by the reset level.
See Option 3 below.
Option 3
When this option is selected you will be prompted to enter a reset level for the alarm.
> Reset=
Enter a value in engineering units that you want to use as the reset point for the alarm. When the scaled
value falls below this limit the alarm will be deactivated. If the reset level is set to a value greater than the
trigger level then the alarm is reverse acting. This mode is normally used for low voltage or level alarms.
Option 4
When this option is selected you will be prompted to enter a time in seconds to delay alarm activation. This
can be used to implement alarm hysteresis for analog data sources that vary. If the data source is one of the
internal counters, then this time is used to totalise individual sample values. If the total over the given alarm
duration is above the trigger level then an alarm is generated. Typically this feature is used for rainfall
alarms.
> Duration (min)=
4.4.11 Output Selection (Level 2)
The Output Selection menu is where you select the digital output you want to configure. From this menu,
you can see at a glance which outputs are enabled.
* Output Selection
0 Exit
1 Output #1 (Enabled)
2 Output #2 (Disabled)
>
Option 0
Select this option to return to the main menu.
Option 1
Select this option to display the set-up menu for Output 1.
Option 2
Select this option to display the set-up menu for Output 2.
4.4.12 Output Cfg (Level 3)
The Output Cfg menu is used to configure each digital output. In the example below, output 1 is being
configured.
* Digital Output 1 Cfg
0 Exit