Sutron Corporation Satlink Operations & Maintenance Manual, Rev 8.04.2 11/3/2016 pg. 26
The key settings for 4-20mA sensors connected to the 4-20mA input are:
Measurement Type: Analog
Analog Type: 4-20mA
The built-in 4-20mA connection has an internal 200 ohm load consisting of transient protection
and a precision 100 ohm sense resistor. External load resistors should also be 100 ohm in order
for the system to operate down to voltages between 10-12VDC. In some cases, the 4-20mA
sensor may need supply voltages > 12VDC to operate. The supply voltage needs to be greater
than the minimum voltage the sensor requires plus the maximum voltage across the load
resistance (2V for 100 ohms).
The key settings for 4-20mA sensor connected to A and B are:
Measurement Type: Analog
Analog Type: 0-5V A or B.
Add a 100 ohm load resistor between A or B and Signal ground.
4.14.
Connecting Status Sensors
A status output is a switch that is open or closed. SL3-1 supports up to two status outputs using
either of the digital inputs (DIN#1 or DIN#2). An internal pullup resistor on DIN#1 or DIN#2
provides the excitation voltage for the switch.
SL3 will return a 0 when the switch is open and a 1 when the switch is closed.
The key settings for pulse sensors are:
Measurement Type: Digital
Digital type: Level 1 or Level 2
DIN#1
DIN#2
