© 2023 HyQuest Solutions 9
Introduction
1.2.2 Logged Data Array Identification
Each sensor’s logged data is identified by an array ID number. For the primary logged data, the ID is the sensor number
itself. For the optional supplementary data (min/max/deviation/flow or total), the array ID has an offset added to the
sensor number that it is derived from. These ID offsets are as follows:
+60 (Not currently supported)
For example, Sensor 4 has been configured to log the average value, plus the maximum. Two data arrays will be logged
for this sensor at each log interval with IDs of 4 and 44 respectively. In HydroTel™ these will then relate to point
identifiers of 4 and 44.
1.2.3 Alarm Processing
Each virtual sensor can be checked for two separate alarm conditions. Each alarm has separate trigger and reset levels, as
well as an activation delay or accumulation period depending upon the data type. The alarms can also be used to control
the digital output or to generate a call-back to a base station when the logger is operating in telemetered mode. See
Sections Digital Output for further details on digital outputs or Section Telemetered Mode for details on using
Telemetry mode.
1.2.4 Real Time Clock & Calendar
The iRIS 150FX has a non-volatile real time clock that can be set by the user via iLink 2012 or HydroTel™.
If the clock is invalid (year < 2011), logging is inhibited. To draw attention to this situation, the LCD will flash
once per second until the clock is set correctly.
1.2.5 Security
The iRIS 150FX can be configured with a PIN code to prevent unauthorised access to restricted information through the
LCD and keypad. When a user is logged on, the totalisers can be reset via the keypad or a terminal session. When the unit
is locked, the totalisers can only be reset via a terminal session.
The PIN code is configured via the General Configuration section in iLink 2012. See Section General for more details.
1.3 iRIS 150 and iRIS 150FX Comparison
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Standard IEEE-754-2008 compliant Floating Point library.
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Datalogging sample values are floating-point with support for invalid values (NaN) if over-range analogue inputs or
failed SDI-12 communication. Logging multiplier completely removed!
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All timestamping is in UTC for internationally diverse markets.
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Default RS232 port speed increased from 38,400 to 115,200 bps.
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Configuration via text terminal removed and only basic terminal diagnostics supported.
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SDI-12 firmware engine re-engineered and now V1.3 compliant.
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Supports an optional custom SDI-12 command with a separate schedule from measurements.
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Alarm processing completely rebuilt. No longer 2 fixed alarms per sensor. Now a pool of 6 general alarms. Each can be
assigned to a sensor as required.
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Sensor logging rate can be different when alarm(s) on that sensors are active.
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All schedules have separate on/off/alarm intervals.
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