Xylem iRIS 150 GPRS DATALOGGERS - Manual (Page 9)

3 – 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] 3
2.4 Technical Specifications
Dimensions:
115mm x 79mm x 32mm (4.5in x 3.1in x 1.3in)
(Including RS232 connector and glands)
Mass:
281g (9.9 oz) including lithium battery.
Power Supply:
Internal 3.6V 2400mA/Hr lithium battery which is normally used as a backup.
Primary supply - external 6-15V dc power supplies can be connected. The internal
backup battery is disconnected when the external supply present or USB is
connected. Nominal external supply current is 0.5mA with LCD backlight off.
Comms Interface:
1x RS232 DB9, DTE configuration. Fixed speed - 38400 bps. Or 1200bps / 9600bps
when active in telemetered mode.
1x USB slave via mini USB connector.
NOTE: The USB connector is unavailable unless the front label is opened which will
negate the IP65 rating. Contact iQuest for details on the USB connection.
SDI-12 Interface:
SDI-12 hardware interface that fully complies with the SDI-12 electrical standard.
Digital I/O:
2 x Digital Inputs
- 30Vdc maximum input, switch to 0Vdc to activate.
- Maximum input frequency 5kHz. Debounce filtering is provided reducing the
maximum frequency to 20Hz. This is enabled by a jumper link.
1 x Digital Output
- Open drain pull-down (max 300mA @ 30V)
Analogue I/O:
2 x 12-bit uni-polar analogue inputs. Range 0-5000mV. Input impedance approx
100k
Ω . Referenced to 0V common. Internal 250 Ω resistor is provided for current
input. The current sink resistors are enabled by jumper links.
Logging Memory: Non-volatile 8MB flash storage of 1,048,576 time/date stamped data points. Circular
buffer mode (oldest data is overwritten when the buffer is full).
Clock/Calendar:
Non-volatile with the integral lithium battery. Clock is fully Y2K compliant with leap
year recognition. Accurate to +/-20 secs month.
Environmental:
Storage Temperature: -20
°
C - +85
°
C. (-4
°
F - +185
°
F)
Operating Temperature: -10
°
C - +70
°
C. (14
°
F - +158
°
F)