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iRIS 220 / iRIS 320, V1.19 User Guide - 6
6
iQuest (NZ) Ltd - PO Box 15169, Hamilton, New Zealand Tel: +64 7 857-0810 Fax: +64 7 857-0811 Email: iquest@iquest.co.nz
2.3 General Characteristics – iRIS 320
The iRIS 320 is supplied in an environmentally sealed (IP65) 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 12
characters (plus icons) LCD.
The iRIS 320 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 320 supports SDI-12 communication with a range of industry standard intelligent sensors. Refer to
Appendix C – SDI-12 (iRIS 320 / 320V only) for more details on the SDI-12 interface.
A variant of the iRIS 320, designated the iRIS 320V offers voice annunciation of sensor values using the
voice bearer of the wireless service. See Appendix B – Voice Annunciation (iRIS 320V) for details on this
model.
The iRIS 320 (from PCB revision 1.2) is able to manage a serial camera, the iRIS-CAM (via a small adaptor
module). This enabled the iRIS to capture colour images which can be unloaded in the same way as logged
data. Due to resource limitations, the iRIS 320V is unable to support the iRIS-CAM in conjunction with the
voice feature.
Figure 2 - iRIS 320 / iRIS 320V