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EKO MS-21SH Instruction Manual

Pyrgeometer
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Summary of Contents for EKO MS-21SH

  • Page 2 A - 5 . S e t t i n g R e p o r t A - 6 . S u r g e P r o t e c t i o n EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 2...

  • Page 3: Important User Information

    The damage or defect is caused by disrespecting the specifications published on the Product Sheet or Manual. The bubble level fails or stops working (this part will not be serviced or replaced by EKO under warranty) There is discoloration of the pyrgeometer body, sun screen, and cable within a range that does not affect the function and performance of the product.

  • Page 4: Weee Directive

    2- 3. A bo ut T his Ins tr uc ti on Man ual Copy Rights Reserved by EKO INSTRUMENTS CO., LTD. Making copies of whole or parts of this document without permission from EKO is prohibited. This manual was issued: Jul.
  • Page 5 EMC-directive : 2014/30/EU Date: April. 11, 2023 Position of Authorized Signatory: General Manager of Quality Assurance Div. Name of Authorized Signatory: Taiji Yamashita Signature of Authorized Signatory: EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 5...

  • Page 6: Safety Information

    3. Safety Information EKO products are designed and manufactured under the consideration of the safety precautions. Please make sure to read and understand this instruction manual thoroughly in order to be able to operate the instrument safely and in the correct manner.

  • Page 7: Signal Cable

    4. About RS485 Modbus RTU Connection This product supports communication through the RS485 Modbus RTU. It is recommended to use the optional EKO converter cable when connecting MS-21SH to a PC. Depending on the USB-RS485 converter type, an additional termination resistor (120Ω) and/or pull- up/pull-down resistor (680Ω) is required for proper communication.
  • Page 8 MS-21SH is a high-end pyrgeometer suitable for research applications in reference meteorological networks (e.g.BSRN). The MS-21SH has specially coated silicon meniscus dome and is able to detect and measure only the long wavelength radiation even during the day by shutting out the unnecessary solar radiation. As temperature sensor, it is integrated with the Pt100 Class A element.

  • Page 9: Package Contents

    Nuts ( M5 ) x2 (1) As for the MS-21SH, 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. (2) Details about the setting report, see appendix A-5.

  • Page 10: Getting Started

    3. Sun screen, Sensor Body The MS-21SH has a sun screen to prevent body temperature increase generated by direct sun light. Weather resistant metal is used for the body, which has resistance against the decrease of nocturnal radiation and heat radiation, and rain and dusts.
  • Page 11 Durable materials are used for the cable and connector, and pin terminals are attached at the end of the cable for easy connection with data logger terminal block. *If longer cables, round terminals or fork terminals are required, please contact EKO Instruments or your distributor. (Also see [7. Specification, 7-4. Accessories List] for optional items.) EKO INSTRUMENTS CO., LTD.
  • Page 12 The sun screen can be removed by loosening the knurling screw and sliding it towards the bubble level direction. *When carrying the MS-21SH with sun screen attached, always hold the instrument from the bottom. Holding only the sun screen part may lead to dropping the sensor as it comes off from the sun screen.
  • Page 13 The dome heating function can be switched ON/OFF using the radio button in the ‘Settings’ => ‘HEATING’ screen. [Modbus RTU] ON/OFF can be switched by directly rewriting the internal register of the MS-21SH from the control device using RS485 communication. Register number: 151 ⇒ Set value: OFF = 0, ON = 1...

  • Page 14: Ground Connection

    Figure 5-2. MS-21SH Ground Connection Method 2. Wiring Procedure Connect the output cable to the MS-21SH: Insert the output cable into the connector port on the back of the sensor unit, and twist clockwise to fasten it. Make sure to tighten the connector all the way.
  • Page 15 5- 4. C on nec ti ons The MS-21SH features a digital smart processing interface providing advanced measurement functions with 2 different industrial signal outputs (Modbus RTU, SDI-12). Table 5-3. Pyrgeometer Output Parameters MS-21SH Output Parameters Modbus RTU / SDI-12 ○...
  • Page 16 1. Digital Output (Modbus RTU / SDI-12) The MS-21SH can work in two digital output modes, respectively Modbus RTU and SDI-12. Simply connect the desired output wires to automatically start communication. To change the digital output mode, turn off the MS-21SH and change the wiring.
  • Page 17 Figure 5-4. How to Connect MS-21SH (Modbus RTU RS485) The MS-21SH can be configured within a multi sensor RS485 Modbus RTU communication network. Up to 31 sensors per one master can be connected and be assigned with a unique address. For a multiple sensor network, the sensors need to be configured according to the recommended RS485 configuration standards as shown in figure 5-5.
  • Page 18 Although a surge protection board is embedded inside the pyrgeometer, if the cable length exceeds 10 m, add an appropriate SPD or the like shall be added to protect the measurement system from lightning surges (see A-6). EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 18...
  • Page 19 Figure 5-6. How to Connect MS-21SH (SDI-12) The MS-21SH can be configured within a multi sensor SDI-12 communication network. Up to 20 units of S-series sensors can be connected and be assigned with a unique address (*). For a multiple sensor network, the sensors need to be configured according to the recommended SDI-12 configuration standards as shown in figure 5-7.
  • Page 20 (*) Dome heating function is not available when operating with 5 VDC power supply. Each Number Corresponds to the Number in Table 5-4. Figure 5-8. Connector Pin Number of the MS-21SH EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 20...

  • Page 21: Data Logger Settings

    Depending on the sensor output which will be used, the data logger should be capable to measure the assigned output type. For the MS-21SH with digital output, Modbus RTU or SDI-12, the data logger should have those inputs. When configuring the data logger parameters, the sampling rate and data reduction methods can be defined right at the beginning of the data acquisition process.
  • Page 22 2. Pyrgeometer Default Settings The MS-21SH features a digital smart processing interface providing advanced measurement functions with different industrial signal outputs (Modbus RTU, SDI-12). Where to find information regarding the MS-21SH defaults settings and important parameters: Table 5-5. Where to find the settings?
  • Page 23 *The sensitivity S for the pyrgeometer is stated on the calibration certificate and the product label. The conversion of the MS-21SH to infrared radiation is performed on-board and will be outputted as one of the measurement parameters within the data string.

  • Page 24: Maintenance And Troubleshooting

    Recalibration Years Contact EKO for more details and pyrgeometer can change in time requests for a recalibration and which affects the sensor sensitivity. maintenance service. EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 24...
  • Page 25 Table 6-2. Maintenance Items2 (Advanced remote checks can be done on the MS-21SH) Maintenance Frequency How To Effect Item Check the daytime IR irradiance data When large difference occurs Data Validity Weekly and compare to the previous days or the operating problems or installation adjacent pyrgeometer.

  • Page 26: Calibration Method

    6- 2. C alib ra ti on It is recommended to recalibrate the MS-21SH pyrgeometer once every 2 years in order to verify the good quality of the solar radiation measurements. Below explains about the calibration methods of EKO pyrgeometers.
  • Page 27 6- 3. Tro ubl es hoo ti n g Read the following in case of any sensor trouble. If any questions should remain, please contact EKO for further technical support. Table 6-3. Troubleshooting Failure Action Make sure that the sensor is properly connected, and type of power supply and voltage There is no output.

  • Page 28: Py Rg Eom Ete R Sp Ec Ifi C A Tions

    Input Power Supply DC8V to DC30V±10% With dome heating function SDI-12 : DC12V±10% With/without dome heating function With heating : < 1.4W Power Consumption Without heating : < 0.2W EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 28...
  • Page 29 65 mm B. Body Height 77mm C. Levelling Screw Height 16 mm D. Width (including Sun screen/Cover) Φ97 mm E. Overall Height (approx.) 93mm Figure 7-1. Outer Dimensions EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 29...

  • Page 30: O Ut Pu T C Ables

    Cable Length:5m The standard cable length for the MS-21SH is 10 m. When using the optional cable, a power supply voltage of 24VDC or higher is recommended. EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 30...
  • Page 31 A- 1. Sp ec t ral Tra ns mit ta nc e The following is a typical value of the spectral transmittance of a silicon meniscus dome. EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 31...

  • Page 32: Software Installation

    If you use the optional ‘EKO Converter Cable’, you can install it simply by inserting the cable connector into the main unit. Power for the MS-21SH can be supplied via USB. (See Figure A3-2). * This conversion cable is for installation, so please avoid using it outdoors for a long time. Because the ground wire is not connected, surges can damage your PC during a lightning strike.
  • Page 33 After the software starts, the ‘Welcome’ window appears. Figure A2-3. Welcome window Automatic connection When using the ‘Auto-connect’ function to connect the MS-21SH with the ‘Hibi’ software, select the COM port that the RS485/USB converter cable is connected to. Figure A2-4. Com port select Click ‘Select’...
  • Page 34 Check that the power supply of the main unit is ‘OFF’. Then, click ‘CONNECT’ button. If the COM port is not recognized, press the refresh button and try again. Power on the MS-21SH within 10 seconds once the ‘Connecting your sensor’ message appears. Figure A2-6. Connecting screen EKO INSTRUMENTS CO., LTD.
  • Page 35 Make sure the connection settings are correct. To perform the ‘Auto-connection’ again, turn off the power of the MS-21SH, select ‘COM port’, and then click ‘CONNECT’. For manual connections, click ‘View settings’ at the bottom of ‘CONNECTION FAILED’ to go to ‘Settings screen’.
  • Page 36 Manual connection After turning on the power of the MS-21SH, click ‘CONNECT’ without selecting ‘COM port’. Clicking ‘view settings’ at the bottom of the ‘CONNECTION FAILED’ screen moves to the ‘Settings’ screen. (The same screen appears even when the ‘Auto-connection’ fails. To perform manual connection, set and connect using this procedure.)
  • Page 37 - ‘Read’ button: Read out the settings. - ‘Output’ button: Output the settings to CSV file Figure A2-12. Apply changes screen “Output” button “Read” button "Save" button Figure A2-13. Settings screen EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 37...
  • Page 38 100 when ‘00’) SDI-12 address 0 to 9 / A to Z / a to z Connection status Connected / Disconnect Figure A2-14. Communication setting screen EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 38...
  • Page 39 Calibration Sensitivity Sensitivity constant: Registered at the time of [µV/W/m manufacturer calibration, but can also be registered at the user side. Figure A2-15. Sensor information settings EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 39...
  • Page 40 4. ‘TEMPERATURE’ setting items Item Name Setting contents Setting range UNIT Preferred unit °C -Celsius / °F -Fahrenheit / K-Kelvin (Temperature unit setting) Figure A2-17. Sensor settings screen EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 40...
  • Page 41 Clicking ‘ZERO ADJUSTMENT’ allows you to adjust Tilt (X axis) and Roll (Y axis) of Tilting items using the present tilt angle as 0°. The spirit level can be used as a reference to readjust the tilt and roll position. The X and Y position of the MS-21SH is factory calibrated.
  • Page 42 Unit: selected from °C (Celsius)’, ‘°F (Fahrenheit)’ or ‘K (Kelvin)’. (°C: default) <Humidity> Humidity measurement data (Unit: ‘%RH’) <Tilt Angle> Tilt (X axis angle) and Roll (Y axis angle) data EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 42...
  • Page 43 (Start time < End time) ‘LOG DATA buttons:’ Click to start logging measurement data. When ‘STOP’ is clicked while measurement data is being logged, logging stops. EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 43...
  • Page 44 Contact (Contact) When you click the ‘Contact’ button, the contact page on [EKO Instruments] website appears in the Browser. Figure A2-22. Contact page @ eko-instruments.com Sensor internal humidity abnormality alert Hibi has a function to monitor the relative internal humidity of the pyrgeometer at all times. When the internal relative humidity exceeds the standard value due to external failure or deterioration of drying agent over time, Hibi judges it to be abnormal and displays an alert.
  • Page 45 * In the case of leap years, notifications will be displayed from the day before. FigureA2-24. Recalibration recommendation notice 10) Exiting the software (Hibi) To exit Hibi, click the ‘X’ in the upper-right corner of the window. EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 45...
  • Page 46 0x01 Read Coils 0x02 Read Discrete Inputs 0x03 Read Holding Registers 0x04 Read Input Register 0x05 Write Single Coil 0x06 Write Single Register 0x10 Write Multiple Registers EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 46...
  • Page 47 Table A3-4. Data Format to Use. Format Abstract Unsigned 16bit Integer Signed 16bit Integer Unsigned 32bit Integer Signed 32bit Integer IEEE754 32bit floating point format ASCII characters string EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 47...
  • Page 48 A3-6. Outline of 1 Holding/Input Register Map · The register map starts from address 0. · Registers No. 0 to 99 are read-only. · Registers after No.101 can be read or written to. EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 48...
  • Page 49 Alerts for abnormalities in the dome heating function of the dome heating function pyrgeometer of the pyrgeometer Normal: 0, Abnormality occurs: 1 30 to 49 are Reserve EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 49...
  • Page 50 A3-9. Register Details from No.50 to 99 · A fixed value of zero (U16) has been written to an address that is not used. · The ‘EKO’ character is written as the company name registration in register No. 96 and 97. Table A3-10. Register No.50-95 50 to 95 are Reserve Table A3-11.
  • Page 51 Sensor name (10,11) Sensor name (12,13) Sensor name (14,15) 174 to 189 are Reserve Cal.Date Calibration date in YYYYMMDD format Cal.Value Calibration value, μV/W・m 194 to 199 are Reserve EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 51...
  • Page 52 Infrared Radiation: I(C) = V(L) x 1000/S +σx(T+273.15)^4 *Since the unit of V(L) is millivolts, multiply it by 1000 to obtain the infrared radiation value. EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 52...
  • Page 53 · Do not write to any Coil other than Reboot/Save. · The readout is always zero. A3-13. Register Details Table A3-14. Coil Register Addr Parameter Type Reboot Save EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 53...
  • Page 54 Table A4-1. SDI-12 Communication Specifications Item Description Communications Protocols SDI-12 Version 1.4 Baud Rate 1,200 bps Data Length 7bit Stop bit Parity bit Even Communication Distance Within 60 m EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 54...
  • Page 55 1 for an abnormal condition. If the pre-measurement command is ‘MC’, then three CRC characters are followed, please refer to SDI-12 standard for the content of CRC characters. EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 55...
  • Page 56 Change the dome heating function setting to ON. aXHT0! a<CR><LF> Change the dome heating function setting to OFF. Variable Identify Measurement Commands and Identify Measurement Parameter METADATA depending on Commands are supported. request data EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 56...
  • Page 57 Analog sensitivity [µV/W/m2] Hardware version 7003 Firmware version (＊.＊＊＊) Dome Heating Function Setting ON/OFF ON(Default) Modbus RTU Setting Address Baudrate 19200 Parity EVEN SDI-12 Setting Address Baudrate 1200 EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 57...
  • Page 58 However, the type, rating, and connection method of the SPD to be used vary depending on the manufacturer, so please read the instruction manual of each manufacturer carefully. EKO INSTRUMENTS CO., LTD. - Pyrgeometer MS-21SH - Instruction Manual Ver.1 Pg. 58...
  • Page 59 MANUAL MS-21SH V01.2024...