EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80/80S/80U - Instruction Manual Ver. 1
Pg. 8
If the cable and main unit are in risk for getting damaged by birds and small animals, protect the cable
and the main unit by using:
1. Reflective tape
2. Repellent
3. Cable duct
4. Installing bird-spike
When using the configurable 0 to 1V output from MS-80S, please use a precision resistor 100Ω. The
settings can be changed with the 485 / USB conversion cable and dedicated software.
2. Handling
Be careful when handling instruments with glass domes. Strong impact to this part may damage the
glass and may cause injuries by broken glass parts.
When carrying any MS-80 model with the sunscreen attached, always hold the instrument from the
bottom. Holding only the sunscreen part may lead to dropping the sensor as it comes off from the
sunscreen.
For voltmeters, data loggers, etc. to be measured by connecting to MS-80, MS-80U, use a product with
an input resistance of 100MΩ or more.
3. Signal Cable [MS-80S]
Make sure to ground the signal cable. When grounding is insufficient, it may cause not only
measurement error due to noise, but also cause electric shock and leakage accidents.
Check the voltage and types of specified power supply before connecting this instrument. When
improper power supply is connected, it may cause malfunction and/or accident.
Use this instrument with 0.5A fuse connected to the power supply line in series. Without connecting the
fuse, it has risks of generating heat and fire due to large-current flowing by the power supply when
internal damage of the electronics occurs.
4. About RS-485 Modbus connection [MS-80S]
This product supports communication through the RS-485 Modbus RTU.
It is recommended to use the optional EKO converter cable when connecting MS-80S to a PC..
Depending on the USB-RS485 converter type, an additional termination resistor (120Ω) and/or pull-
up/pull-down resistor (680Ω) is required for proper communication.
When connecting to a RS-485 (Modbus) master peripheral device, an additional termination resistor
(120Ω) and/or pull-up/pull-down resistor (680Ω) is required for proper communication.
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