HyQuest Solutions iRIS 150FX - Internal Lithium Battery

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Installation
Abbreviation
Description
AI2
Analogue Input #2
GND
Ground (Analogue)
AI1
Analogue Input #1
GND
Ground (Analogue)
DI2
Digital Input #2
GND
Ground (Digital)
DI1
Digital Input #1
GND
Ground (Digital)
DO1
Digital Output (open drain pull-down)
SDI
SDI-12 data connection
+Vin
5 - 15 V DC External Power Supply
GND
0 V DC External Power Supply / Ground
Table 2 – External I/O Terminal Designations
This chapter contains the following subsections:
§ Internal Lithium Battery
§ External Power Supply
§ Analogue Inputs
§ Digital Inputs
§ Digital Output
2.4.1 Internal Lithium Battery
The iRIS 150FX has an internal AA size 3.6 V, 2400 mA/Hr lithium battery, which provides the power supply when no
external dc power supply is available. When external power is connected, the internal battery is completely disconnected.
The battery may be replaced by the user.
The internal AA battery is not intended for long-term use, rather as a back-up in the event of loss of external
power. Standard AA cells such as Alkaline, NiCad, NiMH, etc, cannot be used in the iRIS as they do not supply
sufficient voltage.
A variant is available that has a D-size lithium battery installed and this can be used for self-powered
installations connected to a rain gauge or water meter.
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