EKO MS-57 Instruction Manual
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EKO MS-57 Instruction Manual

Pyrheliometer
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MS-57
INSTRUCTION MANUAL
Pyrheliometer

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Summary of Contents for EKO MS-57

  • Page 1 MS-57 INSTRUCTION MANUAL Pyrheliometer...

  • Page 2: Table Of Contents

    A - 2 . The r mi s tor Te mpe r a tur e C on v ers ion Ta bl e A-3 . Pt1 00 C lass A C on vers ion Ta ble Pg. 1 EKO INSTRUMENTS CO., LTD. MS-57 Pyrheliometer Manual Ver.1...

  • Page 3: Important User Information

    For warranty terms and conditions, please contact EKO Instruments or your distributer for further details. EKO guarantees that the product delivered to customer has been tested to ensure the instrument meets its published specifications. The warranty included in the conditions of delivery is valid only if the product has been installed and used according to the instructions provided in this operating manual.

  • Page 4: About Operating Manual

    2-3. About Operating Manual Copy Rights Reserved by EKO INSTRUMENTS CO., LTD. Making copies of whole or part of this document without permission from EKO is prohibited. This manual was issued: 2017/05/10 Version Number: 1 2-4. Environment 1. WEEE Directive 2002/96/EC...

  • Page 5: Iso /Iec 1 725 :200

    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 calibration method) and...

  • Page 6: Ce Declaration

    Low Voltage Directive : 2014/35/EU Date: July 26, 2016 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. MS-57 Pyrheliometer Manual Ver.1...

  • 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: Power Supply

    Use this instrument with 0.5A fuse connected to the power supply line in series. Without connecting the fuse, it has risks of generating heat and fire due to large-current flowing by the power supply when internal damage on the electronics will occurs. Pg. 7 EKO INSTRUMENTS CO., LTD. MS-57 Pyrheliometer Manual Ver.1...

  • Page 9: Introduction

    The MS-57 has a standard full 5° (degrees) opening angle and 1° slope angle as defined by ISO Pyrheliometers Standards and greatly performs when used in combination with the EKO STR-21(G) or STR-22(G) Sun Tracker.

  • Page 10: Content Of Delivery

    4-2. Content of Delivery Check the package contents first; if any missing item or damage is noticed, please contact EKO immediately.     Figure 4-1. Package Contents Pg. 9 EKO INSTRUMENTS CO., LTD. MS-57 Pyrheliometer Manual Ver.1...

  • Page 11: Getting Started

    (Class A Pt100) to extend further research applications. Although the MS-57 dimensions are relatively small, it has a full 5° opening angle and 1° slope angle geometry. The front aperture has a unique integrated alignment sight for easy and precise alignment of the instrument on a Sun Tracker.

  • Page 12: Setup

    5-2. Setup 1. Installation In this application the MS-57 is mounted on the EKO Sun Tracker STR-21G/22G, which is a fully automatic sun tracking system supporting solar sensors capable of measuring Direct, Diffuse and Global radiation. X/Y-Axis Adjustment Unit When mounting the MS-57, use the fixing hole in Remove the knurling nut from the MS-57 mounting the middle of the mounting plate.
  • Page 13 When installing MS-57 on EKO Sun Tracker STR-21G/22G, 3-hole mounting plate is required. If you already have EKO Sun Tracker purchased before July 2011, you need to purchase the “3-hole mounting plate” (optional part) separately for installing MS-57. If the 3-hole mounting plate is already installed, skip this section and go to [3.
  • Page 14 Arm, and remove the fixing screws on both V-Blocks (M3 x 5mm in 2 places on each V-Block). Disassembling is completed and the 2-hole mounting plate is replaced with 3-hole mounting plate. Pg. 13 EKO INSTRUMENTS CO., LTD. MS-57 Pyrheliometer Manual Ver.1...
  • Page 15 X/Y-Axis adjustment unit on the Sun Tracker Arm with the fixing screws (M3 x 15mm in 4 places) Check to make sure all the screws are placed back in their positions. Pg. 14 EKO INSTRUMENTS CO., LTD. MS-57 Pyrheliometer Manual Ver.1...

  • Page 16: Electrical Connection

    To use the heater, 12V (0.5W) DC power supply is required. When installing in a site where the distance between MS-57 and the data logger is more than 50m, it is recommended to use voltage/current transducer.
  • Page 17 4. Sight Spot Adjustment In order to take an accurate measurement, MS-57 has to be aligned with the sun properly. When the sky is clear, the sunlight will go through the sight and a spot of light is shown on the sight spot surface of body top.

  • Page 18: Op Eration 1

    5-3. Operation After installing and connecting MS-57 to the measurement device, MS-57 can be operated and is ready to collect solar radiation data. It is recommended to use the window heater to prevent dew deposition at the Quartz window. Turn on the heater at least 30 minutes before sunrise.

  • Page 19: Maintenance & Troubleshooting

    6. Maintenance & Troubleshooting 6-1. Maintenance Once the MS-57 is installed, it is essentially free of any maintenance although care must be taken to keep the instrument in the best condition for accurate measurement. 1. Data Verification By analyzing the measurement data (such as irradiance and temperature), user can verify the condition of the instrument.
  • Page 20 6. Recalibration EKO Instruments recommend to recalibrate the sensor every 5 years (*). (*) When there is no condensation inside of the body. Table 6-1 Maintenance check List Check List Action Data verification Check the wiring connections Cleaning of Quartz window...

  • Page 21: C A L Ibra T Io N An D M Eas Ure Me N T U Nc E R Ta In T

    Davos (CH). Both MS-57 and reference pyrheliometer are mounted on a Sun Tracker to capture the direct solar radiation. The direct solar radiation is measured based on 1 minute averaged value for total of more than 2 hours both in the morning and the afternoon on a clear day.

  • Page 22: Tr Oub Les Hoo T In

    Check if the voltage reading is divided by the correct unrealistically high or low. sensitivity value. 2. Check the sight spot and make sure the MS-57 is aligned to the direction of the sun. Although the sensor is hardly susceptible to Electro Magnetic...

  • Page 23: Specification

    Every 5 years - - - - - - - Pt100 Class A, Sensor for Temperature Measurement IEC751 Compliance - - - - - - (Internal Temperature Measurement) - Thermistor 44031, 10kΩ@25℃ Pg. 22 EKO INSTRUMENTS CO., LTD. MS-57 Pyrheliometer Manual Ver.1...

  • Page 24: D Ime Ns Ions 2

    A response time of less than 0.5s to achieve 99% of the final measurement value is one of the unique features of the MS-57. The small thermopile detector having a low heat capacitance and high thermal conductivity responds quickly to changes of the solar radiation. To keep the detector-output stable and in perfect thermal balance during changing environmental and solar radiation conditions, the detector body is isolated from the sensor housing.
  • Page 25 In general the sensitivity of optical detectors depends on the temperature of the instrument because of material properties, known as the temperature coefficient (TC). However the MS-57 sensor construction has a built in special passive compensation network which reduces the temperature dependency to less than +/-0.5% between –20...

  • Page 26: Pro Duc T Ac C Es S Or Ies 2

    Cable Length* 20, 30, 40, 50m Fixing Ring STR-21/22 Mounting Jigs Mounting Plate (3-holes) Drying Cartridge Drying Cartridge Replacement Silica Gel Replacement Silica Gel (desiccant) container (500g) *Standard cable length: 10m Pg. 25 EKO INSTRUMENTS CO., LTD. MS-57 Pyrheliometer Manual Ver.1...

  • Page 27: Appendix

    APPENDIX A-1. Symbols Table A-1 Definitions of Symbols List of symbols Definitions Units μ Output Voltage Sensitivity μV/W･m Time τ Response Time Temperature °C Solar Irradiance Pg. 26 EKO INSTRUMENTS CO., LTD. MS-57 Pyrheliometer Manual Ver.1...
  • Page 28 47540 12260 3893 45270 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. 27 EKO INSTRUMENTS CO., LTD. MS-57 Pyrheliometer Manual Ver.1...
  • Page 29 96.1 107.8 119.4 96.5 108.2 119.8 96.9 108.6 120.2 97.3 109.0 120.6 97.7 109.3 120.9 98.0 109.7 121.3 98.4 110.1 121.7 98.8 110.5 122.1 99.2 110.9 122.5 99.6 111.3 122.9 Pg. 28 EKO INSTRUMENTS CO., LTD. MS-57 Pyrheliometer Manual Ver.1...
  • Page 30 EKO Asia, Oceania 1-21-8 Hatagaya, Shibuya-ku, Tokyo 151-0072 Japan P. +81.3.3469.6713 F. +81.3.3469.6719 info@eko.co.jp www.eko.co.jp EKO North America 95 South 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,...

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