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EKO MS-80 Manual

Pyranometer
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  • Page 2: Table Of Contents

    A- 7. Tem per at ur e Co n v er s i on Ta b le ( 44 0 31 , 1 0k ΩNT C) 51 Pg. 1 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...

  • Page 3: Important User Information

    For warranty terms and conditions, contact EKO or your distributor for further details. EKO guarantees that the product delivered to customer has been verified, checked and tested to ensure that the product meets the appropriate specifications. The product warranty is valid only if the product has been installed and used according to the directives provided in this instruction manual.

  • Page 4: Environment,

    2. RoHS Directive 2002/95/EC EKO Instruments has completed a comprehensive evaluation of its product range to ensure compliance with RoHS Directive 2002/95/EC regarding maximum concentration values for substances. As a result all products are manufactured using raw materials that do not contain any of the restricted substances referred to in the...
  • Page 5 EKO is a unique manufacturer who can offer calibration service for pyranometers and pyrheliometers in-house. Based on the applied calibration methods EKO provides the best quality solar sensor calibrations compliant to the international standards defined by ISO/IEC17025 / 9847 (Indoor method) and ISO9059 (Outdoor method) (Certification: L13-94-R2 / www.pjlabs.com)
  • Page 6 Amendment to the above directive: 93/68/EEC Date: Dec. 1, 2015 Position of Authorized Signatory: Deputy General Manager of Quality Assurance Dept. Name of Authorized Signatory: Shuji Yoshida Signature of Authorized Signatory: Pg. 5 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...

  • Page 7: Safety Information

    3. Safety Information EKO Products are designed and manufactured with consideration for safety; however, please make sure to read and understand this instruction manual thoroughly to be able to operate the instrument safely in the correct manner. WARNING Attention to user; pay attention to the instructions given on the CAUTION instruction manual with this sign.
  • Page 8  When carrying any MS-80 model with the sunscreen attached, always hold the instrument from the bottom. Holding only the sunscreen part may lead to dropping the sensor as it comes off from the sunscreen.

  • Page 9: Introduction

    4. Introduction EKO’s new generation sensor, called MS-80 broke with the rules of traditional pyranometer architecture. The innovative design was inspired by the combination of latest technologies and state-of-the-art thermopile sensor, enabling a breakthrough in unprecedented low zero-offset behaviour and fast sensor response.
  • Page 10 In case of the MS-80 the detector it is totally isolated below the sensor optics surface, which is sealed, and can’t be affected by a high dose of UV, moisture or pressure differences.
  • Page 11 2. MS-80A The MS-80A is a MS-80 with built in 4-20mA converter which can transfer data in long distance. Due to the ultralow temperature dependency and non-linearity characteristics, the converter guarantees an optimal sensor performance throughout year and day. For easy conversion, the MS-80 output by the integrated...
  • Page 12 Compact and light weight  Fast Response time (<0.5s@95%, <1s@99%)  Excellent temperature response over a wide temperature range (-20 to +50℃)  Low offset characteristics Pg. 11 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...

  • Page 13: Package Content

    Nuts ( M5 ) x2 *In case of MS-80/80A/80M, standard length is 10m for both signal/power cable. For different length of cables (e.g. to meet your application needs) please contact EKO or your local distributor. MS-80U cable length is 3m, no other optional lengths are available.

  • Page 14: Getting Started

    B. Glass Dome C. Sensor D. Body Levelling Screw Cable G. Bubble Level *The cable can’t be removed from the pyranometer Figure 5-2. Pyranometer Parts Name (MS-80U) Pg. 13 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 15 The sensor (thermopile detector), which is the heart of the pyranometer generates a voltage signal that is proportional to the solar irradiance. The sensor determines the majority of the measurement properties (e.g. response time, zero offset B, non-linearity, sensitivity, etc.). MS-80 sensor varies less by aging due to special construction.
  • Page 16 The sunscreen can be removed by loosening the knurling screw and sliding it towards the bubble level direction. *When carrying the MS-80 with sunscreen attached, always hold the instrument from the bottom. Holding only the sunscreen part may lead to dropping the sensor as it comes off from the sunscreen.
  • Page 17 [Installing at Tilted Position] After the MS-80 is adjusted to horizontal position in levelled surface, install it on tilted mounting position. *When installing the instrument, do not remove the levelling feet or fixed feet; if the levelling feet are removed, it may cause abnormal output values due to the thermal effects from the mounting part.
  • Page 18 24V for power supply voltage. *Please choose the precision resistance value and cable length those can keep the power supply to MS-80 over DC 9.6V Pg. 17 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 19 Connect the + and – for the master to (A/Tx) and (B/Rx) for each MS-80M. Also at the end of network, connect 120Ω terminating resistance. *Modbus ID setting is required separately. (See [A-5. Change MS-80M Settings]). Figure 5-4. Communication Connection with Modbus RTU Pg. 18 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 20 MS-80/80A/80M ach number corresponds to the number in Table 5-4. There is no corresponding figure for MS-80U because the cable can’t be removed from MS-80U body. Pg. 19 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 21 The maximum output voltage can be calculated by multiplying the maximum solar irradiance with the calibration factor (e.g. when the sensitivity of the MS-80 pyranometer is about 10μV/W・m 0.010mV/W・m , the maximum output voltage is about 1,400W/m times 0.010mV/W・m...
  • Page 22 Hence, sampling rates and data reduction methods can be defined right at the beginning of the data acquisition process. The response time that is given in the specifications of the EKO pyranometers states the amount of time, which is necessary to reach 95% of the final measurement value. It is also possible to define a 63.2% response (which is equal to 1-1/e).

  • Page 23: Maintenance & Troubleshooting

    6. Maintenance & Troubleshooting 6- 1. Main te na nc e Using the EKO pyranometers accurate results can be obtained if the glass dome and the condition of the instrument are maintained properly. Furthermore, regular maintenance and scheduled re-calibrations can extend the lifetime of EKO pyranometers over 10 of years.
  • Page 24 6- 2. Cali br ati on an d M eas u rem e nt Unc e rtaint y It is recommended to recalibrate MS-80 pyranometer once every 5 years in order to verify the good quality of the solar radiation measurements. Below explains about the calibration methods of EKO pyranometers and their calibration uncertainty.
  • Page 25 6- 3. Tro ubl es h ooti ng 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 Make sure that the sensor cable is connected properly to the instrument.

  • Page 26: Specifications

    7- 1. Spec ific ati ons 1. Pyranometer Specifications The comparison table below, Table 7-1, shows typical values for the characteristic parameters of the EKO Pyranometers and the corresponding values of the ISO 9060: 2018 norm. The content of the characteristic item is partly changed from ISO 9060: 1990.
  • Page 27 ** Temperature sensor is internally connected to MODBUS electronics ***The operational maximum irradiance is defined as the irradiance level beyond which damage may occur to the sensor. Pg. 26 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 28 C. Levelling Screw Height 16 mm Φ96 mm D. Width (including Sunscreen/Cover) 101mm E. Overall Height (approx.) Figure 7-1. Outer Dimensions (MS-80 / 80A / 80M) Pg. 27 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 29 A. Fixing Hole Pitch 65 mm B. Body Height 50 mm C. Levelling Screw Height 16 mm Φ78 mm D. Width Figure 7-2. Outer Dimensions (MS-80U) Pg. 28 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 30 For MS-80A Configuration Cable Converts from RS485  USB for the communication with MS-80M and RS485 / USB Converter Cable allows to connect to PC with USB terminal Pg. 29 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...

  • Page 31: Appendix

    Pyrheliometer is classified into 4 classes of AA, A, B and C based on the performance of each characteristic, and specifications of "spectrally flat radiometer" and "Fast response radiometer" are set as sub-categories. Pg. 30 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 32 (ISO 9060: 2018 added) Error generated when converting the analog output of Pyranometer processing errors or Pyrheliometer into a digital signal with a signal converter etc. Pg. 31 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...

  • Page 33: Software Installation

    A- 3. Co nfig u ra to r Soft wa re ( MS -8 0A, MS - 80 M ) With the EKO Sense Configurator software which can be downloaded from the EKO website and optional controller, MS-80A and MS-80M configurations, such as output range and sensitivity, can be changed.
  • Page 34 The software installation finishes when [Finish] button is clicked and software starts up. If you don’t wish to start the software immediately, check the checkbox before clicking the [Finish] button. Figure A-4. Setup Complete Window Pg. 33 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...

  • Page 35: Hardware Preparation

    Once the software is installed, connect the devices necessary for configuring. Connections for MS-80A After software installation, connect the USB connector of “EKO Sensor USB Controller” to PC, and clamp the MS-80A output cable terminal with the crocodile clip on the other end of the cable.
  • Page 36 (Tools/Language) to change the language to be used: English, Portuguese, Spanish, or Japanese. Figure A-7. Language Setting Next, select the device to be configured. Click [4-20mA] icon for MS-80A. Figure A-8. Selecting Configuring Device Pg. 35 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 37 The written configuration is maintained even in the condition without power being supplied. *Unless [Write Device] is clicked, the changes will not be reflected on the configuration. Pg. 36 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 38 After the password [eko2014] is entered, configuration items for [Advanced Options] appear on the window. The linearity correction and temperature correction can be configured in this section. Pg. 37 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 39 Measurement Temperature (Internal Temperature) a, b, c, d : Correction Efficient Default Value {a: 1, b: 0, c: 0, d: 0} (= Configuration for when not using temperature correction) Pg. 38 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 40 Figure A-13. Selecting Configuring Device In order to make changes to the MODBUS sensor, connect the sensor with the USB/RS485 cable to a PC. The upper field of the EKO Sense Configurator is used to change the USB/RS485 sensor communication settings.
  • Page 41 Node number Change sensor parameters The lower field of the EKO Sense Configurator is used to change the sensor parameters. The sensor parameters can be changed in order to connect to a large Node network where each sensor has it private address (ID). Some of the parameters are password (“8355”) protected (Sensor Temperature Compensation, Sensor non-linearity, Node ID (address), baud rate, Parity).
  • Page 42 Measurement data can be logged easily. Click [Log Data] button  Starts to save the measurement data by assigning the destination folder for the log file to be saved. Pg. 41 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 43 Use following equation for correction by setting each item in the approximation formula (cubic equation): I = (k1 + (k2 x ETC (E, T) + (k3 x ETC (E, T) ) + (k4 x ETC (E, T) )) / S Pg. 42 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 44 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.
  • Page 45 8bit 8bit n * 8bit 16bit A silent interval (≧3.5 char) (≧3.5 char) Modbus Data (RTU) Table A-7. Function Code Code: decimal Function Read Holding Registers Pg. 44 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 46 ※1: UINT16: Integer without 16 bits symbol. ※2: FLOAT: Single precision floating point number, Send and receive the low order word first then high order word second Pg. 45 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 47 Correction Coefficient; When k1 is changed, offset output (μV) can be changed Default Values {k1: 0, k2: 1, k3: 0, k4: 0}: Setting for not using linearity correction Pg. 46 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 48 Converting data for Minimum Irradiance and Maximum Irradiance (Addresses No. 13 to 14) Conversion result: Minimum Irradiance: 0 [W/m ], Maximum Irradiance: 1600 [W/m Address No. Output Data Conversion result 1600 Pg. 47 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 49 Connect the No.23 data to make one data for before conversion. Next, calculate the data before conversion according to the IEEE754 standard. Conversion result: 820.52 [W/m Address No. Output Data Data Before Conversion 444D2147 Conversion result 820.52 Pg. 48 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 50 (4-20mA or MODBUS). When MS-80 is calibrated at an external calibration laboratory, in practice slight differences can be expected relative to the MS-80 manufacturer calibration scale and lab-scale. A difference in the calibration measurement results can be explained by the differences with respect to the method of calibration, reference sensors, sensor characteristics and measurement conditions.
  • Page 51 Appendix A-7. T = (α + β (LN(R )) + γ (LN(R )) -273.15 Where: Detector temperature (℃) Resistance value (Ω) α 1.0295・10-3 β 2.3910・10-4 γ 1.5680・10-7 Pg. 50 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...
  • Page 52 11770 3758 43110 11290 3629 41070 10840 3504 39140 10410 3385 37310 10000 3270 35570 9605 3160 33930 9227 3054 32370 8867 2952 30890 8523 2854 Pg. 51 EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80 - Instruction Manual Ver. 3...

This manual is also suitable for:

Ms-80aMs-80mMs-80u

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