Xylem iRIS 150 GPRS DATALOGGERS - Manual (Page 25)

19 – IRIS 150 V1.11 User Guide
iQuest (NZ) Ltd - PO Box 15169, Hamilton, New Zealand Tel: +64 7 857-0810 Fax: +64 7 857-0811 Email: [email protected] 19
Option 3
When this option is selected you will be prompted to enter a number representing the operating mode of the
output.
> Mode (0..1)=
Valid modes are:
Source
Description
0 Schedule. Follows the schedule as defined by the settings in alarm config options 4-7.
1 Alarm. If any alarm is active, the digital output will be on.
Table 5 - Digital Output Modes
Option 4
When this option is selected you will be prompted to enter the length of time in seconds that you want the
iRIS to keep the output energised if the mode is set to 0 (schedule).
> Duration (sec)=
Option 5
When this option is selected you will be prompted to enter the length of time in minutes between the
successive operations of the output if the mode is set to 0 (schedule).
> Frequency (min)=
Option 6
When this option is selected you will be prompted to enter a string representing the time at which the iRIS is
allowed to start controlling the output if the mode is set to 0 (schedule).
> Start Time (HHNN)=
Option 7
When this option is selected you will be prompted to enter a string representing the time at which the iRIS
must stop controlling the output if the mode is set to 0 (schedule).
> End Time (HHNN)=
Typical Scheduled Output Example
A ground water site using an iRIS is required to log a sample every hour that is obtained from a pressure
transducer whose power supply is controlled from the digital output via a transistor switch. The transducer
needs to be powered up for one minute prior to the measurement being taken and logged. The settings
required to achieve this are shown below.
* Digital Output Cfg
0 Exit
1 Enable [Yes]
2 Polarity [Normal]
3 Mode [Schedule]
4 Duration [65 sec]
5 Frequency [60 min]
6 Start Time [0059]
7 End Time [2359]
The output will be activated at the beginning of the 59
th
minute of each hour in the day, starting at 00:59. It
will remain on for 65 seconds, ensuring that the sensor is still powered up at the point when the reading is
captured on the hour. The final output activation for the day will occur at 23:59 in preparation for the
midnight measurement.