EKO MS-40S User manual

INSTRUCTION MANUAL
MS-40
MS-40S
Pyranometer
ISO9060:2018 Class C
ISO9060:1990 Second Class

EKO INSTRUMENTS CO., LTD. - Pyranometer MS-40/40S - Instruction Manual Ver. 4
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1. Index
1. Index 2
2. Important User Information 3
2-1. Contac t I nformation 3
2-2. Warr ant y a n d Lia b ility 3
2-3. About O perati n g Manua l 4
2-4. E n v iron m e n t 4
2-5. I SO/IEC 17 0 25 5
2-6. C E Declar ation 6
3. Safety Information 7
3-1. G e n eral War nings 7
4. Introduction 9
4-1. I ntroduc tio n 9
4-2. P ackage C ontents 10
5. Getting Started 11
5-1. P ar ts Descript i o n s 11
5-2. S e tup 13
5-3. M e asuring S olar I rradi a nce 19
6. Maintenance & Troubleshooting 21
6-1. M a intenance 21
6-2. C alibr at i on and M easur em ent Uncer t a i nty 23
6-3. Troub leshoot ing 24
7. Specification 25
7-1. S p ec ific ations 25
7-2. D im ensio ns 27
7-3. O u tput Ca b l es 28
7-4. Accessori es List 28
APPENDIX 29
A-1. Radiom etr ic Term s 29
A-2. P yranom eter Characteris t ics 30
A-3. Configurator Softwar e [ M S -4 0 S] 31
A-4. Communicat ion S pec if ic a t ions [ MS-40S Mo d bus RTU] 35
A-5. C omm unic a t ion S pecif ic a t ions [ M S -40S SDI-12] 43
A-6. Recali br ation 44

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2. Important User Information
Thank you for using EKO Products.
Reading this manual is recommended prior to installation and operation of the product. Keep this
manual in safe and handy place for whenever it is needed.
For any questions, please contact us at below:
2-1. Contact I nformati on
EKO INSTRUMENTS CO., LTD.
Asia, Oceania Region
https://eko-asia.com
[email protected]
EKO INSTRUMENTS Co., Ltd.
1-21-8 Hatagaya, Shibuya-ku
Tokyo, 151-0072 Japan
Tel: +81 [3] 3469-6713
Fax: +81 [3] 3469-6719
Europe, Middle East, Africa, South America Region
https://eko-eu.com
[e-mail]
EKO INSTRUMENTS Europe B.V.
Lulofsstraat 55, Unit 28,
2521 AL, Den Haag, The Netherlands
Tel: +31 [0]70 3050117
Fax: +31 [0]70 3840607
North America Region
https://eko-usa.com
[e-mail]
EKO INSTRUMENTS USA Inc.
111 North Market Street, Suite 300
San Jose, CA 95113 USA
Tel: [phone]
Fax: [phone]
2-2. Warrant y an d Liability
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.
In case any manufacturing defect[s] will occur, the defected part[s] will be repaired or replaced under
warranty; however the warranty will not be applicable if:
➢Any modification or repair has been done by other than EKO service personnel.
➢The damage or defect is caused by disrespecting the specifications mentioned on the product
brochure or instruction manual.

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2-3. About Op erati ng 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: 2019/7/30
Version Number: 4
2-4. Environment
1. WEEE Directive 2002/96/EC
[Waste Electrical and Electronic Equipment]
In August of 2005, the European Union [EU] implemented the EU WEEE Directive 2002/96/EC and later the
WEEE Recast Directive 2012/19/EU requiring Producers of electronic and electrical equipment [EEE] to
manage and finance the collection, reuse, recycling and to appropriately treat WEEE that the Producer places
on the EU market after August 13, 2005. The goal of this directive is to minimize the volume of electrical and
electronic waste disposal and to encourage re-use and recycling at the end of life.
EKO products are subject to the WEEE Directive 2002/96/EC. EKO Instruments has labeled its branded
electronic products with 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 EKO Instruments branded electrical or electronic products in the EU and are intending
to discard these products at the end of their useful life, please do not dispose of them with your other
household or municipal waste. Disposing of this product correctly will help save valuable resources and
prevent any potential negative effects on human health and the environment, which could otherwise arise
from inappropriate waste handling.
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
RoHS Directive 2002/95/EC at concentration levels in excess of those permitted under the RoHS Directive
2002/95/EC, or up to levels allowed in excess of these concentrations by the Annex to the RoHS Directive
2002/95/EC.

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2-5. ISO/IEC 17 025
EKO Instruments Co. Ltd. calibration laboratory is accredited by Perry Johnson Laboratory Accreditation, Inc.
[PJLA] to perform pyranometer and pyrheliometer calibrations in accordance with the requirements of
ISO/IEC17025, which are relevant to calibration and testing.
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]
ISO/IEC17025 provides a globally accepted basis for laboratory accreditation that specifies the management
and technical requirements. With calibrations performed at the EKO Instruments laboratory we enable our
customers to:
・ Clearly identify the applied calibration methods and precision
・ Be traceable to the World Radiation Reference [WRR] through defined industrial standards:
ISO9846 Calibration of a pyranometer using a pyrheliometer
ISO9847 Calibration of field pyranometer by comparison to a reference pyranometer
ISO9059 Calibration of field pyrheliometers by comparison to a reference pyrheliometer
・ Obtain repeatable and reliable calibration test results through consistent operations
Our clients will obtain a highly reliable data by using an ISO/IEC17025 calibrated sensor. Our accredited lab is
regularly re-examined to ensure that they maintain their standards of technical expertise.

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DECLARATION OF CONFORMITY
We: EKO INSTRUMENTS CO., LTD
1-21-8 Hatagaya Shibuya-ku,
Tokyo 151-0072 JAPAN
Declare under our sole responsibility that the product:
Product Name : Pyranometer
Model No. : MS-40, MS-40S
To which this 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]
Following the provisions of the directive:
EMC-directive: 89/336/EEC
Amendment to the above directive: 93/68/EEC
Date: April 4 , 2019
Position of Authorized Signatory: General Manager of R & D Department
Name of Authorized Signatory: Shuji Yoshida
Signature of Authorized Signatory:
2-6. CE Declaration

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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
CAUTION
Attention to user; pay attention to the instructions given on the
instruction manual with this sign.
HIGH
VOLTAGE
WARNING
High voltage is used; pay special attention to instructions given in
this instruction manual with this sign to prevent electric leakage
and/or electric shocks.
3-1. Ge neral Warnings
1. Setup
➢The installation base or mast should have enough load capacity for the instrument to be mounted.
Fix the pyranometer securely to the base or mast with bolts and nuts; otherwise, the instrument
may drop due to gale or earthquake, which may lead to unexpected accidents.
➢Make sure the instrument and the cables are installed in a location where they will not get soaked.
➢When using this instrument by 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 side]. Noise may be included in the measurement data.
➢Although this product is tested to meet EMC Directive compliance requirements, it may not fully
satisfy its primary specification/performance when using this product near following locations
where strong electromagnetic wave is generated. Please pay attention to the installation
environment.
Outdoor: High voltage power line, power receiver/distribution facility, etc.
Indoor: Large-size chiller, large rotation device, microwave, etc.
➢Do not use this product in environment where corrosive gas, such as ammonia and sulfurous acid
gas, are generated. It may cause malfunction.
➢Do not install in area that cause salt damages. It may cause malfunction by paint peeling off or
corrosion. When installing in area with risk of salt damages, make sure to take following
measures:
1. Wrap the connector with self-fusing tape.
2. Change the fixing screw to bolt screw made of aluminum.
3. Run the cables in resin pipe or metal pipe treated with salt-resistant paint such as molten zinc
plating.
4. Periodically clean.

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➢Do not use this instrument in vacuum environment.
➢If the cable and main unit are in risk for getting damaged by birds and small animals, protect the
cable and the main unit by using:
1. Reflective tape
2. Repellent
3. Cable duct
4. Installing bird-spike
2. Handing
➢Be careful with glass dome when handling instruments. Strong impact to this part may damage the
glass and may cause injuries by broken glass parts.
➢When carrying the MS-40 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.
➢When using the 0 to1V, please prepare the precision resister 100Ω. If 0-1V output is not selected as
a purchase option, 0-1V output is off. Or the setting can be changed with the 485 / USB conversion
cable and dedicated software.
3. Power Supply [MS-40S]
➢Make sure to ground the power supply. When grounding is insufficient, it may cause not only
measurement error due to noise, but also cause electric shock and leakage accidents.
➢Check the voltage and types of specified power supply before connecting this instrument. When
improper power supply is connected, it may cause malfunction and/or accident.
➢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.

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4. Introduction
4-1. Introduction
The MS-40 sensor is perfectly suited measuring the solar energy in horizontal or tilted measurement
configurations. It is fully compliant with the “Spectrally flat Pyranometer of Class C” of ISO9060: 2018
standard. The MS-40 Pyranometer is sensitive within the entire spectral range from 285 to 3000nm. It can be
applied within the most demanding applications for solar radiation measurements.
The S-model has smart electronics, which provided advanced measurement functions with different industrial
signal outputs (MODBUS 485 RTU, SDI-12, 4-20mA, configurable 0-10mA / 0-1V with optional precision
shunt resistor 100Ω) and on-board sensors for remote diagnostics of the sensor temperature, relative
humidity and tilt position.
The MS-40 can be used in combination with the optional MV-01 [ventilator + heater unit] to reduce dew,
condensation and accumulation of dusts and snow on glass dome. The ventilation unit with heater is
recommended when the sensor will be deployed in harsh climate regions.
Each MS-40 is calibrated and tested at EKO upon manufacture against EKO’s reference sensors, which are
fully traceable to the WRR [World 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 pyranometers and pyrheliometers compliant to the
international standards defined by ISO/IEC17025/9847/9059 [Outdoor calibration method]. When an ISO/
IEC17025 calibrated sensor is purchased, EKO offers sensor at nearly constant calibration uncertainty. The
Accredited lab is regularly re-examined to ensure that they maintain their standards of technical expertise.
ISO 9060, an international industry standard, was revised to the 2nd edition in 2018. Along with this revision,
the Pyranometers are classified in order of the highest grade "Class A" "Class B" "Class C" and for
Pyranometers that meet the response time and spectral selectivity criteria, "fast response pyranometer" and
"spectrally flat radiometer" are classified as a sub-category.
1. MS-40
The analog MS-40 can be used in traditional sensor networks in combination with a data logger with
high-resolution mV input channels. The sensor has a light-weight anodized aluminum housing and
precision-machined hemispherical glass dome to provide good performance characteristics. The MS-40 is a
perfect balance between cost-effectiveness and quality.
2. MS-40S
The MS-40S with smart sensor technology and onboard diagnostic functions. 4 different output types can be
selected, which is a great benefit for system integrators who work with various industrial standards. This new
Smart transducer will also have additional features such as internal temperature and humidity sensors and a tilt
sensor for remote sensor diagnostics. These additional internal sensors will help the user to monitor the
stability of the irradiance sensors as well as to ensure its proper installation and maintenance practices.
Up to 100 smart sensors can be connected in one network. The signal converter settings can be changed
using the optional RS485 / USB converter cable and the configurator software.

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Category of ISO9060: 2018
“spectrally flat pyranometer of class C”
Key features:
•Outputs (MODBUS 485 RTU, SDI-12, 4-20mA, configurable 0-10mA / 0-1V with external optional 100Ω
precision shunt resistor)
•Wide range of voltage supplies available [DC 5 to 36 V]
•With built-in tilt / role sensor to check the sensor position over time.
•Humidity and temperature sensor to monitor the sensor temperature and condition of the drying agents
(silica gel) inside the sensor body.
4-2. Package Co ntents
Check the package contents first; if any missing item or damage is noticed, please contact EKO immediately.
Table 4-1. Package Contents
Contents
MS-40 / 40S
Pyranometer
○
Output Cable *
○
Sunscreen
○
Calibration Certificate
○
Quick Start Guide
○
Instruction Manual
Not included in the package
[Please download from EKO Website]
Inspection Report
-
Fixing Bolts
[ M5 ] x2
[Bolt Length: 75mm ]
Washers
[ M5 ] x4
Nuts
[ M5 ] x2
* Standard length is 10m for signal cable. For different length of cables [e.g. to meet your application needs]
please contact EKO or your local distributor.