EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80/80S/80U - Instruction Manual Ver. 1
Pg. 21
C. MS-80U (Temperature sensor type NTC 10kΩ). Connect the 4 wires with corresponding color to the input
terminals of the voltmeter or data logger (figure 5-7).
[*] Always connect the shield cable to prevent signal noise.
[**] See the Appendix A-7 resistor to temperature conversion table. [NTC 10k Ω].
2. Current output (4-20mA / 0-10mA)
MS-80S has two current outputs (4-20mA and 0-10mA). The 4-20mA output is default, the 0-10mA output can be
enabled through the “Hibi” software which can be downloaded from the EKO website (MS-80S product page). See
appendix 3 to change the current output settings. The current output can be converted into a voltage output when
a shunt resistor is used in series. In combination with an external 100Ω precision resistor (0.1%, 15 ppm) a 0-1V
output can be made.
Current output (4-20mA / 0-10mA)
Connect the 3 wires with corresponding color to the input terminals of the current meter or data logger (figure 5-8).
Connect the power terminals to a DC power supply [8 to 30 V]. We recommend to use a fuse [0.5A] to the DC power
supply line [+] for over current protection.
Interconnect the power supply (-) and 4-20mA / 0-10mA (-) line. The MS-80S current output
requires a 3 wire connection, contrary to the 2 wire configuration of MS-80A which is
current loop.
Fig. 5-7. How to connect MS-80U
Red
White
Green
Black
Shield
[Ω]
[***]
+
Measurement
Device
-
FG [*]
NTC
NTC
Fig. 5-8. How to connect MS-80S (4-20mA / 0-10mA output)
Brown
Power supply
DC8V to 30V
4-20mA input
Measurement Device
Fuse [0.5A]
White
Gray
Shield
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