Xylem SDI-12 Data Logger iRIS 220, iRIS 320, iRIS 350, iRIS 150, iRIS 300 - Manual (Page 77)

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11 Appendix A – iRIS 350 Specific Information
11.1 General Characteristics – iRIS 350
The iRIS 350 is supplied in an environmentally sealed (IP66) enclosure constructed from a special corrosion-
resistant aluminium alloy that is finished in a hard-anodised coating. This provides a very high degree of
mechanical strength and EMI shielding, and enables completely stand-alone mounting in outdoor situations.
The unit comes standard with an integral 12V gel-cell battery, membrane keypad and a 4 lines x 19
characters (plus icons) LCD.
The iRIS 350 supports a maximum of six external sensors (1-6). Sources for these sensors may be chosen
from physical digital or analog inputs or virtual sources (via serial communication or calculations). Each
sensor has two associated alarms, each with separate trigger and reset levels. Each alarm also has a
duration, which is used to delay the alarm trigger for analog inputs and to determine the time over which
pulse input counters should be totalised (rainfall etc).
Three additional sensors (7-9) are reserved for internal measurements (battery voltage, supply voltage and
temperature). Data from all enabled sensors are logged in a four word (8 byte) compressed format which
includes full date and time to fractions of a second.
The iRIS supports SDI-12 communication with a range of industry standard intelligent sensors. Refer to
Appendix G – SDI-12 for more details on the SDI-12 interface.
A variant of the iRIS 350 which is designated the iRIS 350V offers voice annunciation of sensor values using
the voice bearer of the wireless service. See Appendix D – Voice Annunciation (iRIS 3x0V) for details on
this model.
The iRIS 350 supports the connection of a proprietary serial camera, the iRIS-CAM. This enables the iRIS to
capture colour images which can be unloaded in the same way as logged data. Due to resource limitations,
the iRIS 350V is unable to support the iRIS-CAM in conjunction with the voice feature.
Figure 13 - iRIS 350 / iRIS 350V