EKO MS-60, Instruction Manual, Page: 34 / 45

EKO INSTRUMENTS CO., LTD. - Pyranometer MS-60/60S - Instruction Manual Ver. 4
Pg. 33
Sensitivity
10 Temp. Correction Temperature compensation. Compensated based on the temperature data,
which temperature characteristics caused by the change of ambient temperature,
measured with pt100 and the 4 temperature correction factors [a, b, c, and d]:
ETC [E, T] = E / TC1 [T] , TC1 [T] = a + b x T + c x T
2
+ d x T
3
ETC [E,T] : Measurement voltage that compensated the temperature
E : Measurement voltage
TC1[T] : correction factor
T : Measured temperature [Internal]
a, b, c, d : Correction factor
Default values {a: 1, b : 0, c : 0, d : 0}: Setup that does not use linearity correction
Linearity correction is not used in the default setting. Unless there is any special
reason, it is recommended not to change this setting.
11 Linearize Linearity correction. When you want to change the output linearity against the
solar irradiance, it can be corrected using 4 linearity correction factors [ k1, k2, k3,
k4 ]. To compensate, setup each item for the approximation used for
compensation like below formula.:
I = [ k1 + [ k2 x ETC [E, T] + [ k3 x ETC [E, T]
2
] + [ k4 x ETC [E, T]
3
]] / S
I : Solar irradiance after the linearity correction
ETC[E,T] : Measurement voltage after the temperature compensation
mentioned above.
S : Pyranometer sensitivity
k1, k2, k3, k4 : Correction factor
[Ex.] If k1 is changed, offset output [
μV] can be changed.
Default values { k1 : 0, k2 : 1, k3 : 0, k4 : 0}: Setup that does not use linearity
correction
Linearity correction is not used in the default setting. Unless there is any
special reason, it is recommended not to change this setting.
12 Analog output Switches the analog output. Select from: OFF/ 0-1V /4-20mA
13 Load Resistor Enter the actual value for 1
00Ω that is used during 0-1V output.
14 0V to 1V Setup the solar irradiance [W/m
2
] corresponding to 0-1V output.
[Default: 0V=0W/m
2
、
1V=1600W/m
2
]
15 4-20mA Setup the solar irradiance [W/m
2
] corresponding to 4-20mA output.
[Default: 4mA=0W/m
2
、
20mA=1600W/m
2
]
16 Read Memory Reads and displays the information on #1 to 15 from the memory.
17 Save Memory Writes the changed contents to MS-60S memory. To save the changed contents
permanently, press Reboot.
18 Reboot Reboot.
19 Load File Reads the configuration from the file. The file name is
“XXX.xml”
20 Save File Writes the current configuration to the file. The file name is
“XXX.xml”
21 COM Setting Opens the communication setting window.