EKO MS-60 Instruction Manual Download Page 21

EKO INSTRUMENTS CO., LTD. - Pyranometer MS-60/60S - Instruction Manual Ver. 4

 

Pg.  20 

 

6.  Maintenance & Troubleshooting 

 

6 - 1 .   M a i n t e n a n c e  

Using  the  EKO  pyranometers,  accurate  results  can  be  obtained if  the glass  dome and  the  condition  of  the 

instrument are maintained properly.  Environmental conditions, such as for instruments mounted near highly 

frequented  traffic  lanes  or  airports,  may  have  a  deteriorating  effect  on  the  materials.  Therefore,  proper 

maintenance is needed and has to be adapted to the local environmental conditions. 

The following table describes the common maintenance tasks that should be performed on a regular basis: 

 

Table 6-1. Maintenance Items1 

Maintenance 

Item 

Frequency 

How To 

Effect 

Clean Glass 

Dome 

Several 

times per 

week 

Keep  the  glass  dome  clean  by  wiping 

with a soft cloth and alcohol 

The  irradiance  measurement  will  be 

affected 

due 

to 

change 

in 

transmittance of glass dome.     

Check   

Appearance 

Condition 

Weekly 

Check  for  cracks  and  scratches  on  the 

glass dome and body. 

May  lead  to  water  leakage  due  to 

rain/dew, which causes damage of the 

detector inside the pyranometer. 

Check   

Spirit level 

Weekly 

Verify  if  the  pyranometer  is  levelled  by 

checking the bubble is in the center ring 

of spirit level. [When the pyranometer is 

setup in horizontal position] 

An additional cosine/azimuth error will 

be introduced. 

Check   

Cable 

Condition 

Weekly 

Verify  if  the cable  connector  is  properly 

connected,  tightened  to  the  instrument, 

and  how  cable  is  lined;  make  sure  the 

cable is not swinging by wind. 

A  disconnected  cable  will  cause 

sporadic  reading  errors  or  failure  of 

operation.    If the cable is damaged, it 

may lead to noise or electric shock. 

Check   

Setup Base 

Condition 

Weekly 

Check  if  the  instrument  is  tightened 

properly to the mounting base plate and 

the  base  plate  and/or  table  is  securely 

fastened in a proper condition. 

Loose  instruments  and/or  mounting 

plates  can  lead  to  damages  of  the 

instruments and/or injury. 

Check the 

Sunscreen 

Weekly, 

Before/Aft

er Bad 

Weather 

Verify if the sunscreen is securely fixed 

on  the  body,  and  knurling  screw  is 

securely tightened. 

May lead to damaging the instrument 

and/or 

lead 

to 

increasing 

measurement 

error 

due 

to 

temperature  increase  by  sunscreen 

coming off. 

Recalibration 

Every 2 

Years 

To 

maintain 

the 

best 

possible 

measurement  accuracy,  recalibration  of 

the  pyranometer  is  recommended. 

Contact  EKO  for  more  details  and 

requests 

for 

recalibration 

and 

maintenance service. 

Due  to  natural  aging  of  materials  the 

detector 

properties 

of 

the 

pyranometer  can  change  in  time 

which affects the sensor sensitivity. 

 

 

 

Summary of Contents for MS-60

Page 1: ...INSTRUCTION MANUAL MS 60 MS 60S Pyranometer ISO9060 2018 Class B ISO9060 1990 First Class...

Page 2: ...e Contents 9 5 Getting Started 10 5 1 Parts Descriptions 10 5 2 Setup 12 5 3 Measuring Solar Irradiance 18 6 Maintenance Troubleshooting 20 6 1 Maintenance 20 6 2 Calibration and Measurement Uncertain...

Page 3: ...erica Region https eko usa com info eko usa com EKO INSTRUMENTS USA Inc 111 North Market Street Suite 300 San Jose CA 95113 USA Tel 1 408 977 7751 Fax 1 408 977 7741 2 2 Warranty and Liability For war...

Page 4: ...h the WEEE Symbol figure Trash bin to alert our customers that products bearing this label should not be disposed of in a landfill or with municipal or household waste in the EU If you have purchased...

Page 5: ...pjlabs com ISO IEC17025 provides a globally accepted basis for laboratory accreditation that specifies the management and technical requirements With calibrations performed at the EKO Instruments labo...

Page 6: ...his declaration relates is in conformity with the following harmonized standards of other normative documents Harmonized standards EN 61326 1 2006 Class A Emission EN 61326 1 2006 Class A Immunity Fol...

Page 7: ...connecting to a measuring instrument make sure to connect the shield cable to either the signal ground terminal on the measuring instrument side or GND the reference potential on the single end input...

Page 8: ...ss and may cause injuries by broken glass parts When carrying the MS 60 with sunscreen attached always hold the instrument from the bottom Holding only the sunscreen part may lead to dropping the sens...

Page 9: ...ld Radiometric Reference maintained at the PMOD WRC Physikalisch Meteorologisches Observatorium Davos World Radiation Center in Davos Switzerland Besides EKO provides a unique calibration service for...

Page 10: ...Category of ISO9060 2018 spectrally flat pyranometer of class B Key features Outputs MODBUS 485 RTU SDI 12 4 20mA configurable 0 10mA 0 1V with external 100 precision shunt resistor Wide range of volt...

Page 11: ...he glass domes of all EKO thermopile pyranometers permit to measure the cosine weighted global solar irradiance over the entire hemisphere i e with a field of view of 180 degree 2 Detector Thermopile...

Page 12: ...dry The dry air inside the sensor body prevents condensation of humidity on the inside of the glass dome 5 Cable and Cable Connector All pyranometers are shipped with a 10 meter long output cable as s...

Page 13: ...llows in mm Table 5 2 Fixing Hole Pitch and Bolt Size for Pyranometers MS 60 MS 60S Fixing Hole Pitch 65 mm Fixing Bolt Size M5 x 75 mm 2 Setup the pyranometer with the signal cable connector facing t...

Page 14: ...he cable does not swing or move by wind blowing Exposure of the signal cable to excessive electromagnetic emissions can cause noise in the output signal as well Therefore the cable should be lined at...

Page 15: ...How to connect 0 1V optional The default output is 4 20mA If 0 to 1V output is not selected as a purchase option 0 to 1V output is off Or the setting can be changed with the 485 USB conversion cable a...

Page 16: ...I 12 Connect the output cable end DC power supply 12 V and data logging device as shown in the figure below Install a fuse 0 5A in series between the DC power supply and the MS 60S connection as shown...

Page 17: ...digits of the product serial number If the last 2 digits are 00 the address will be 100 Communication errors may occur depending on the connection distance and the number of connections In that case...

Page 18: ...o 36V DC 5 to 36V DC12V DC5 to 36V 2 White 4 20mA GND GND GND 0 10mA 0 1V GND 3 Blue RS485 B SDI 12 Data 4 Black RS485 A 5 Gray 4 20mA 0 10mA 0 1V Shield Shield FG FG FG FG When selecting 0 1V output...

Page 19: ...the sensitivity of the MS 60 pyranometer is about 10 V W m 2 or 0 010mV W m 2 the maximum output voltage is about 1 400W m2 times 0 010mV W m 2 14mV b Calculate the Solar Irradiance W m2 The solar ir...

Page 20: ...2 response which is equal to 1 1 e This time constant represented by the symbol is 3 times smaller than the values specified by EKO The recommended 1 sampling rate for pyranometers is smaller than So...

Page 21: ...s in the center ring of spirit level When the pyranometer is setup in horizontal position An additional cosine azimuth error will be introduced Check Cable Condition Weekly Verify if the cable connect...

Page 22: ...s and sensor stability issues can be revealed Data Weekly For the S series with Modbus output check the body temperature Temperature changes can cause offsets and change of sensitivity due to the dete...

Page 23: ...e reference output mV and sensitivity V W m2 calculate the irradiance W m2 4 finally the sensitivity V W m2 value is calculated by division of the pyranometer output mV and reference irradiance W m2 M...

Page 24: ...ttings 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 r...

Page 25: ...l values Characteristics MS 60 MS 60S ISO9060 2018 Class B ISO9060 1990 First class Spectrally flat Fast response Response time 95 output 20 Sec 18 Sec 18 Sec Zero off set a 200W m2 15 W m2 5 W m2 5 W...

Page 26: ...utput Cable outer diameter AWG22 0 3mm2 2pins 4 8mm AWG20 0 5mm2 5pins 6 7mm Output Cable Terminal Pin Terminal 1 25 11S Pin Terminal 0 3 9 5 Output or Signal Voltage mV Default MODBUS 485 RTU SDI 12...

Page 27: ...Below table and figures give the pyranometer dimensions for each model Table 7 3 Dimensions MS 60 60S A Fixing Hole Pitch 65 mm B Body Height 91 5 mm C Levelling Screw Height 16 mm D Width including S...

Page 28: ...Cable Length 20m 30m 50m Terminals Fork Terminals Round Terminals Pin Terminals Ventilation Unit with Heater Model MV 01 RS485 USB Converter Cable Converts from RS485 USB for the communication with MS...

Page 29: ...d in units of W m2 or kW m2 Pyranometer A radiometer designed to measure the hemispheric solar irradiance over the wavelength range of about 300 to 3000nm Pyrheliometer A radiometer designed to measur...

Page 30: ...nce irradiance is 1 000W m2 ISO 9060 2018 modified Include the zenith angle of zenith angle 90 or more Spectral error ISO 9060 2018 added Maximum spectral mismatch error of Pyranometer with respect to...

Page 31: ...nd of the cable 3 Change of setting contents Here describes how to change the configurations such as MS 60S output range and sensitivity First install the software and connect the devices and PC with...

Page 32: ...off the converter power Please do not unconnect the Blue and Black cables 2 Press OK button 3 Turn on the converter power within 5 seconds Fig A 3 Rescue When the communication with converter is achi...

Page 33: ...types EKO Default MC 20 KZ Type HF Type Use only when communication installation of master device does not change in the case of installing different product such as swapping pyranometers Registry re...

Page 34: ...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 facto...

Page 35: ...its Stop Bit 1bit Default 2bits 2 Parity Bit None Default odd even Communication Distance Maximum 1 2km theoretical value Error Detection CRC 16 1 The open protocol for the serial communication which...

Page 36: ...conversion voltage mV 63 UINT16 Analog power supply voltage 5 000 mV 64 UINT16 Digital power supply voltage 3 300 mV 80 81 82 83 FLOAT32 FLOAT32 Tilt Angle Role Angle C 84 85 86 SINT16 X axis count v...

Page 37: ...Tilt sensor Z axis 1G value S 149 150 151 SINT16 Tilt sensor X axis origin Tilt sensor Y axis origin Tilt sensor Z axis origin T 152 153 UINT32 Manufacturing date YYYYMMDD type U 154 155 UINT32 Seria...

Page 38: ...mum angle 90 Role angle East West tilt angle When the pyranometer cable is facing north the inclination to the west is indicated with positive value and the inclination to the east is indicated with m...

Page 39: ...107 From the combination of amplifier type and input range it is selected with number Do not change from the factory setting TableA 10 Analog input setting Amplifier type Input range Amplifier type I...

Page 40: ...e change 1 set with 2 addresses Temperature correction is not setup in default setting ETC E T E TC1 T TC1 T a b x T c x T2 d x T3 Whereas ETC E T Measurement voltage that compensated the temperature...

Page 41: ...e hexadecimal Data Conversion 1 Conversion method when the data format is STR Data format after conversion ASCII Please convert according to ASCII code table Conversion example Data conversion of Mode...

Page 42: ...ample Data conversion of solar irradiance Address 2 to 3 The FLOAT data will be in the following order As shown in the example put the data for No 2 before and the data for No 3 after together to make...

Page 43: ...th address number a aM a0011 CR LF Request the device with address number a to perform measurement only one time aD0 1000 0 CR LF Request the device with address number a to send data The device will...

Page 44: ...case the original manufacturer calibration remains unchanged The multiplication factor can be applied in the data logger or processing software 2 MS 60S The scale difference can be applied to the sens...

Page 45: ...eko co jp EKO North America 111 North Market Street Suite 300 San Jose CA 95113 USA P 1 408 977 7751 F 1 408 977 7741 info eko usa com www eko usa com EKO Europe Middle East Africa South America Lulof...

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