EKO MS-80 Manual

EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3
Pg. 24
6-3. Troubleshooting
Read the following in case of any sensor trouble. If any questions should remain, please contact EKO for
further technical support.
Table 6-2. Troubleshooting
Failure
Action
There is no output.
MS-80
MS-80U
Make sure that the sensor cable is connected properly to the instrument.
To verify the connection, measure the impedance of output cable
(between the “+” and the “-” wires) and check if the measured
impedance is within the proper range as shown in the specification
table.
MS-80A
Make sure that the sensor is properly connected, and type of power
supply and voltage value are appropriate
MS-80M
Make sure that the sensor is properly connected, and type of power
supply and voltage values are appropriate. Also check the
communication settings (i.e. port, baud rate, converter ID) are
appropriate.
Output value is too low
The glass dome maybe soiled with rain or dust. Clean the glass dome
with a soft cloth.
The output may be decreased due to regular change. Recalibrate
periodically.
There are some output signals during
night time.
Pyranometers generate an output signal, which is proportional to the
temperature differences between the sensor’s so-called hot and cold
junctions; hence, small differences in temperatures between, for
example, the housing and the sensor generate in some cases a small
voltages. This is an instrument-intrinsic phenomenon, which has no
significance related to the quality of the instrument.
There are unusual noise.
Check the shield connection and make sure it is connected securely.
Check to make sure the output cable is not swinging by wind; take
necessary measure by fixing or lining the cables through metal pipe.
Check for any objects which emit electromagnetic wave around the
instrument and or cable.
When using data logger or measuring device with <100MΩ input
impedance, the datalogger potentially won’t measure the sensor output
correctly; thus take following measures in composition:
1. Use measuring device with input impedance more than 100MΩ
2. Setup the integration time and stability time as long as possible.
3. Use moving average processing on the data
4. Attach 2 or more ferrite cores at the end of the cable.

EKO MS-80 Specifications

General

Brand	EKO
Model	MS-80
Category	Measuring Instruments
Language	English