EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80/80S/80U - Instruction Manual Ver. 1
Pg. 18
5- 3. Wiring
To extend the cable lifetime, make sure that the cables are not exposed to direct sun light or rain/wind by lining the
cable through a cable conduit. Cable vibrations will potentially cause noise in the output signal. Fasten the cable so
that the cable does not swing or move by wind blowing. Exposure of the signal cable to excessive electromagnetic
emissions can cause noise in the output signal as well. Therefore, the cable should be lined at a safe distance from
a potential source generating EMC noise, such as an AC power supply, high voltage lines or telecom antenna.
1. Ground connection
The pyranometer housing is connected to the shield wire of the cable, so connect the shield
wire to the ground on the measuring instrument side.
Do not connect the pyranometer housing to ground. It will be a two-point ground and it cause
a noise.
2. Wiring procedure
1) Connect the output cable to the MS-80 and MS-80S by inserting the cable connector to the connector on the
body then turn the screw cap. Make sure to check the pin layout of the connector before connecting the cable.
If the connector cannot be easily inserted, DO NOT use any force as it will damage the connector. Visually
check the pin layout again before retrying to insert the connector. Make sure to fasten the screw cap by turning
it all the way.
FG
Measurement Device
Measurement instrument side ground
Connect the shield wire of the cable to FG on
the measuring instrument side.
Fig. 5-4. MS-80/80S ground connection method
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