Kipp&Zonen SMP3 Pyranometers - Manual (Page 3)

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Dear customer, thank you for purchasing a Kipp & Zonen instrument. It is essential that you read this manual completely for a
full understanding of the proper and safe installation, use, maintenance and operation of your new SMP series pyranometer.
We understand that no instruction manual is perfect, so should you have any comments regarding this manual we will be pleased
to receive them at:
Kipp & Zonen B.V.
Delftechpark 36, 2628 XH Delft, - or
P.O. Box 507, 2600 AM Delft,
The Netherlands
+31 15 2755 210
[email protected]
www.kippzonen.com
Warranty and liability
Kipp & Zonen guarantees that the product delivered has been thoroughly tested to ensure that it 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 supplied by Kipp & Zonen.
Kipp & Zonen shall in no event be liable for incidental or consequential damages, including without limitation, lost profits, loss
of income, loss of business opportunities, loss of use and other related exposures, however incurred, rising from the faulty and
incorrect use of the product.
Modifications made by the user may affect the instrument performance, void the warranty, or affect the validity of the CE declaration
or other approvals and compliances to applicable International Standards.
Copyright © 2015 Kipp & Zonen B.V.
All rights are reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or
by any means, without authorisation by Kipp & Zonen.
Kipp & Zonen reserves the right to make changes to this manual, brochures, specifications and other product documentation
without prior notice.
Manual document number: V1501
Publication date:
1 st January 2015
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Throughout this manual the following symbols are used to indicate to the user important information.
General warning about conditions, other than those caused by high voltage electricity, which may result in physical
injury and/or damage to the equipment or cause the equipment to not operate correctly.
Note Useful information for the user
1.1 Product overview
According to International Standard ISO 9060:1990 and the World Meteorological Organisation (WMO) a pyranometer is the
designated type of instrument for the measurement of hemispherical (global or diffuse) solar radiation integrated over the
wavelength range from 0.3 µm to 3 µm (300 nm to 3000 nm). All pyranometers within the SMP series are compliant with one
of the classes specified by the international standard.
This manual, together with the instruction sheet, provides information related to the installation, maintenance, calibration,
product specifications and applications of the SMP series pyranometers.
If any questions should remain, please contact your local Kipp & Zonen representative or e-mail the Kipp & Zonen customer and
product support department at:
[email protected]
Please go to www.kippzonen.com for information about other Kipp & Zonen products, or to check for any updates to this manual
or software.
1.1.1 The pyranometer
The SMP series instruments are high quality radiometers designed for measuring short-wave irradiance on a plane surface
(radiant flux, W/m²), which results from the sum of the direct solar radiation and the diffuse sky radiation incident from the
hemisphere above the instrument.
SMP pyranometers feature internal digital signal processing and interfaces optimised for industrial data acquisition and control
systems. Kipp & Zonen has developed a smart interface that features RS-485 Modbus® data communication for connection to
programmable logic controllers (PLC’s), inverters, digital control equipment and the latest generation of data loggers. Amplified
Voltage or Current outputs are also included for devices that have high-level analogue inputs or current loop interfaces.
There are three models in the SMP series, SMP3, SMP10 and SMP11, and available in two versions. One has an analogue voltage
output of 0 to 1 V, the other has an analogue current output of 4 to 20 mA. They all have a 2-wire RS-485 interface with Modbus®
(RTU) protocol.
Digital signal processing provides faster response times and, with an integrated temperature sensor, corrects for the temperature
dependence of the detector sensitivity.
To achieve the required spectral and directional characteristics SMP Series pyranometers use thermopile detectors and glass
domes. SMP3, SMP10 and SMP11 have built-in bubble levels and adjustable levelling feet. Snap-on sun shields reduce solar
heating of the housings. The waterproof connectors have gold-plated contacts.
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The pyranometers are normally delivered with a waterproof plug pre-wired to a high quality signal cable, typically this is 10 m
long but other lengths are available. The instruments can also be ordered with a plug only, for the user to fit their own cable.
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SMP3 features a 64-junction thermopile sensing element with a highly absorptive, and spectrally flat, black coating to capture
incoming radiation and convert it to an electrical signal. This detector is protected by a high quality glass dome which is 4 mm
thick. The housing is completely sealed.
SMP10 and SMP11 have a larger housing than SMP3 with increased thermal mass. Its 32-junction thermopile sensing element
features faster response, better linearity and a wider measurement range than the SMP3. There are two high quality concentric
glass domes, 2 mm thick, which provide improved directional error and thermal isolation. The radiometric levelling is more
accurate and SMP11 has a drying cartridge with replaceable desiccant. The SMP10 has internal desiccant that lasts for 10 years.
Features and specifications of the SMP3, SMP10 and SMP11 pyranometers are explained later in this manual.
1.1.2 International Standards
SMP3 is fully compliant with the requirements of ISO 9060:1990 for a Second Class Pyranometer.
SMP10 and SMP11 are fully compliant with the requirements of ISO 9060:1990 for a Secondary Standard Pyranometer.
SMP series pyranometers are calibrated in accordance with Annex A.3 of ISO 9847 ‘Calibration of Field Pyranometers by
Comparison to a Reference Pyranometer’. Annex A.3 refers to ‘Calibration Devices Using Artificial Sources’. Calibrations are
traceable to the World Radiometric Reference (WRR) in Davos, Switzerland.
SMP series pyranometers comply with IEC 60904-1 ‘Photovoltaic devices - Part 1: Measurement of Photovoltaic Current-Voltage
Characteristics’.
1.2 Key parts of the SMP3 pyranometer
1.3 Key parts of the SMP10 pyranometer
1.4 Key parts of the SMP11 pyranometer
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Important user information