Sutron Corporation X-Link Operations & Maintenance Manual, Rev 1.63 5/24/2016 pg. 11
1.7.
Power Connections
1.7.1.1.
Battery
X-Link requires an ex12V power source to operate. The most common
power source is a lead-acid or gel cell type battery.
In the figure above, the battery and solar panel are shown connected
Connect the battery to terminals #1 and #2 labeled - GND and + Battery (8-16V)
on the external terminal strip.
The acceptable voltage range for X-Link to operate correctly is
8 to 16 volts.
The
capacity of the battery shall be chosen to support the overall station power
budget reflecting the type of sensors, how often they are measured, and desired
length of operation without solar power input. Typical small stations reading a
few sensors once per hour will find the 4 AHr battery sufficient. Power hungry
sensors and aggressive measurement schedules will require larger batteries and
or larger solar panels.
If a SDI-12 sensor is used, a minimum of 10V may be required.
The use of 4-20ma sensors may also necessitate using a battery of 12V
minimum. Consult the sensor manual for requirements.
1.7.1.2.
Solar Panel
X-Link features a built-in solar power regulator capable of handling up to 30
watts. Connect the solar panel to terminals #3 Solar Panel - and #4 Solar Panel +.
See figure above for connection details.