EKO INSTRUMENTS CO., LTD. MS-56 Pyrheliometer Manual Ver.5
Pg. 12
(5) Attach the V-Blocks on the 3-hole mounting plate with fixing screws (M3 x 5mm in 2 laces for each V-Block)
then attach the 3-hole mounting plate on the Sun Tracker Arm with 2 fixing screws. (M3 x 15mm)
(6) Attach the X/Y-Axis adjustment unit on the 3-hole mounting plate with the fixing screws (M3 x 15mm in 4
places) then attach the X/Y-Axis adjustment unit on the Sun Tracker Arm with the fixing screws (M3 x 15mm in 4
places)
Check to make sure all the screws are placed back in their positions.
3. Electrical Connection
In order to measure the solar irradiance, the MS-56 should be connected to a measurement device, in most
cases a data logger. MS-56 is a passive sensor that does not need any power; however to operate the window
heater, a DC12V (0.5W) power supply is required for heating.
It is recommended to keep the cable length between data logger and the sensor as short as possible.
Depending on how the cable is lined, unwanted noise is caused; thus, keep the cable away from the noise
cause, such as AC cable or high voltage line. Also in some cases, more noise is seen depending on the type
of data logger used.
