EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80/80S/80U - Instruction Manual Ver. 1
Pg. 25
Datalogger connection (SDI-12)
Connect the 3 wires of the sensor cable with the corresponding wire color to the SDI-12 communication port of the
datalogger master and power supply unit (figure 5-13). Connect the power terminals to a DC power supply [12 V].
We recommend to use a fuse [0.5A] to the DC power supply line [+] for over current protection.
MS-80S can be configured within a multi sensor SDI-12 communication network. Up to 32 sensors can be
connected and be assigned with a unique address. For a multiple sensor network the sensors need to be
configured according to the recommended RS-485 configuration standards as shown in figure 5-14. Make
sure the cable length between the connecting slave and master be less than 60m. The shield cable must be
connected to the ground, otherwise noises may occur.
Figure 5-14. Communication Connection with SDI-12
SDI-12 Data
DC-12V+
Ground
Sensor
No.1
Sensor
No.2
Sensor
No. n
Master
Interconnect the power supply (-) and SDI-12 (-) line.
Fig. 5-13. How to connect MS-80S (SDI-12)
Brown
White
Blue
Shield
Power supply
DC12V
Data collection device
SDI-12
Fuse [0.5A]
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