EKO INSTRUMENTS CO., LTD. Sunshine Duration Meter MS-093 Instruction Manual Ver.4
Pg. 16
7. Maintenance & Troubleshooting
7-1. Maintenance
To maintain accurate measurement, it is necessary to check and do the following.
With routine maintenance and periodical calibration, MS-093 can be used for a long period of time as more
than 10 years. Depending on the installation and operating environment, such as near heavy traffic road
and airport, MS-093 may get more impact from the environment. It is highly recommended to perform
proper maintenance for the installation and operating environment.
Table 7-1. Maintenance Items
Check Items
Frequency
How To
Effects
Clean Glass Cover
Several
times per
1 week
Wipe the dirt on the glass cover by
soft cloth and alcohol
Solar radiation is blocked by the dirt
on the glass cover and cause
decrease in output.
Check Glass Cover
Condition
Every
Week
Check glass cover for any
movement, scratch and/or crack.
Water may leak inside by rain drops
and condensation causing damages
to the sensor and internal parts.
Check Mirror
Rotation Condition
Every
Month
Check the reflecting mirror for its
movement; make sure it is rotating
smoothly and not stopped or
rotating irregularly.
MS-093 may not output any
sunshine signal, or may cause
misjudgment between sunshine/not
sunshine.
Check Horizontal
Level
Every
Week
Check and make sure the MS-093
base plate is in horizontal position
and adjust the level as necessary
Measurement error corresponding
to the shifted incident angle will be
accounted in the measurements.
Check Sensor
Latitude and Tilt
Condition
Every
Month
Check the latitude scale to check for
any shifts in the sensor position.
Measurement error corresponding
to the shifted incident angle will be
accounted in the measurements.
Check Sensor
Installation
Direction
Every
Month
Check the direction of MS-093
installation direction. Make sure it
is facing towards the right direction.
Measurement error corresponding
to the shifted direction angle will be
accounted in the measurements.
Check Silica Gel
Condition
Every
Month
Check the silica gel color change
from blue to reddish color. If the
color had been changed, replace
with new silica gel.
Condensation may occur inside the
glass cover due to humidity and may
lead to misjudgment of
sunshine/no-sunshine. Leaving
the without replacing silica gel may
lead to damaging the MS-093
Calibration
Every 2
Years
Contact EKO for calibration.
May lead to misjudgment of
sunshine/no-sunshine.
Overhauling
Every 2
Years
Contact EKO for overhaul service to
replace packing and O-rings which
are used in parts of MS-093 and are
consumable parts.
Water leakage inside the sensor
may occur easily, and lead to
misjudgment of sunshine/
no-sunshine if not treated.
