EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3
Where:
I : Irradiance after Linearity Correction (W/m
2
)
ETC (E, T): Measurement Voltage after Temperature Correction above (mV)
S : Pyranometer Sensitivity (μV/W/m
2
)
k1, k2, k3, k4: Correction Coefficient (Ex.) When k1 is changed, Offset Output (μV) can be changed.
Default Values {k1: 0, k2: 1, k3: 0, k4: 0} Setting that does not use Linearity Correction
Temperature Correction
Parameters (x4) for correcting the temperature response which occur by the change in ambient
temperature
*Temperature correction is not setup in default setting. For general use, it is recommended not to
change the temperature correction setting.
Use following equation for correction by setting each item in the approximation formula (cubic equation):
ETC (E, T) = E / TC1 (T) , TC1 (T) = a + b x T + c x T
2
+ d x T
3
Where:
ETC (E, T): Temperature Corrected Measurement Voltage (mV)
E : Measurement Voltage (mV)
TC1 (T): Correction Efficient
T : Measurement Temperature (℃, Internal Temperature)
a, b, c, d : Correction Efficient
Default Values {a: 1, b: 0, c: 0, d: 0}: Setting that does not use Temperature Correction
Communication Settings
- mb ID (Modbus ID, Default: 1)
When connecting more than 2 units of MS-80M or connecting the EKO’s MC-20 and Bus,
individually setup a unique mb ID before connecting with Bus.
mb Baud. (Modbus Baudrate, Default: 9600)
Configurable Baud Rate [bps] {4800, 9600, 19200, 38400, 56000, 57600, 115200}
mb Par. (mb Parity bit, Default: None)
Configurable Parity {None, 1, 2 (for programming application by client)}
After changing the configurations, click [Send Config] button to write the changes to MS-80M, as
well as check the changes are reflected.
NOTE: When setting node with something different (i.e. Baud Rate 38400), the communication baud rate must
correspond to (38400).