30
7.
Specifications for SDI-12 AnalogPlus module
Input Voltage
8 – 16 VDC
Power Consumption
< 0.5mA quiescent, 6 mA typ. measuring (exclusive of current
required by sensors)
Temperature Range
-40ºC to +60º
Communication Interfaces
SDI-12
SDI-12 Support
V1.3 - will work with V1.0, V1.1, V1.2, and V1.3 data loggers
Analog inputs
3 dedicated 1 programmable use.
0 – 5V input range.
Programmable Gain up to 128.
Any 2 analog inputs can be measured as a true differential pair,
not just the difference of two single ended readings.
24 bit A/D converter
Programmable high impedance input buffer (0.05 V to 3.5V)
Analog Accuracy
+ 0.02% FS @ 25°C
Temperature Coefficient
+ 5 ppm/°C typ., + 10 ppm/°C max.
Shared input
One analog input can be configured to measure digital inputs
up to 8 kHz.
Dedicated Digital input (1)
Up to 8 kHz. Programmable 20 k Ohm pull-up for switch
closure inputs.
Input Filtering
Digital inputs support programmable de-bounce filtering
Reference output
2.5V reference – 10 mA max.
Switched Supply Output
Programmable 5V or switched supply voltage – 100 mA max
5V 5%
Switched supply drop, 0.5V at 10 mA, 1.7 V at 100 mA.
Mounting
DIN rail with spring loaded metal clip.
Wiring Connections
Four pluggable terminal blocks
Ordering Information
Part Number
Description
6661-1248-1
SDI-12 AnalogPlus Module
