Vaisala RS41-SG, RS41-SGP User Manual
M211667EN-G
User Guide
Vaisala Radiosonde
RS41-SG and RS41-SGP
PUBLISHED BY
Vaisala Oyj
Street address: Vanha Nurmijärventie 21, FI-01670 Vantaa, Finland
Mailing address: P.O. Box 26, FI-00421 Helsinki, Finland
Phone: +358 9 8949 1
Visit our Internet pages at www.vaisala.com.
© Vaisala 2018
No part of this manual may be reproduced,
published or publicly displayed in any form or by
any means, electronic or mechanical (including
photocopying), nor may its contents be modified,
translated, adapted, sold or disclosed to a third
party without prior written permission of the
copyright holder. Translated manuals and
translated portions of multilingual documents are
based on the original English versions. In
ambiguous cases, the English versions are
applicable, not the translations.
The contents of this manual are subject to change
without prior notice.
Local rules and regulations may vary and they
shall take precedence over the information
contained in this manual. Vaisala makes no
representations on this manual’s compliance with
the local rules and regulations applicable at any
given time, and hereby disclaims any and all
responsibilities related thereto.
This manual does not create any legally binding
obligations for Vaisala towards customers or end
users. All legally binding obligations and
agreements are included exclusively in the
applicable supply contract or the General
Conditions of Sale and General Conditions of
Service of Vaisala.
Table of Contents
1. About This Document..................................................................................... 5
1.1 Version Information............................................................................................. 5
1.2 Related Manuals...................................................................................................5
1.3 Documentation Conventions............................................................................. 6
1.4 Trademarks...........................................................................................................6
1.5 Regulatory Compliances.....................................................................................6
2. Product Overview............................................................................................. 9
2.1 Introduction to Vaisala Radiosonde RS41.........................................................9
2.2 Unwinder.............................................................................................................10
2.3 Packing................................................................................................................. 11
2.4 Product-Related Safety Precautions............................................................... 12
2.5 ESD Protection................................................................................................... 12
2.6 Lithium Battery-Related Precautions.............................................................. 13
3. Operation............................................................................................................ 15
3.1 Preparing the Sounding.................................................................................... 15
3.2 Preparing the Radiosonde Balloon..................................................................15
3.2.1 Handling the Balloon...................................................................................15
3.2.2 Filling the Balloon........................................................................................16
3.3 Preparing Optional Sounding Accessories.................................................... 20
3.3.1 Totex Parachute 5710-5...............................................................................21
3.3.2 Non-Totex Parachute...................................................................................21
3.4 Preparing RS41 Unwinder.................................................................................22
3.4.1 Detaching Unwinder Stick.........................................................................22
3.4.2 Handling the Unwinder String...................................................................23
3.4.3 Attaching the Unwinder to the Balloon...................................................24
3.5 Preparing the Radiosonde with Ground Check Device RI41........................ 25
3.6 Preparing RS41 Sensor Boom.......................................................................... 29
3.7 Checking the LED Light................................................................................... 30
Table of Contents
4. Storage and Transportation.........................................................................31
4.1 Storage................................................................................................................ 31
4.2 Transportation.................................................................................................... 31
4.2.1 Transporting RS41 Radiosondes with Lithium Batteries.........................31
Appendix A:
Appendix B: Radiosonde Warranty................................................................... 35
Technical Support...................................................................................................... 37
Recycling....................................................................................................................... 37
Safety Instructions for Balloon Operators........................... 33
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RS41-SG and RS41-SGP User Guide M211667EN-G
List of Figures
Figure 1 Vaisala Radiosonde RS41 with Unwinder...................................................... 10
Figure 2 RS41 Unwinder.......................................................................................................11
Figure 3 Radiosonde RS41 Optional Accessories....................................................... 20
Figure 4 RS41 Unwinder Details.......................................................................................23
Figure 5 Unwinder Clip Is Level with the Unwinder Bottom Plate......................... 24
Figure 6 Ground Check Device RI41................................................................................26
Figure 7 Lithium Battery Handling Label...................................................................... 32
2
List of Tables
Table 1 Manual Versions....................................................................................................... 5
Table 2 Related Manuals....................................................................................................... 5
Table 3 Unwinder Properties............................................................................................. 10
Table 4 RS41 LED Lights.....................................................................................................30
List of Tables
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RS41-SG and RS41-SGP User Guide M211667EN-G
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Chapter 1 – About This Document
1. About This Document
1.1 Version Information
This document provides information for operating Vaisala Radiosonde RS41-SG and RS41SGP, referred to as RS41 in this manual. For information on the sounding software, see the
appropriate sounding system documentation.
In this manual, RS41 refers to Radiosonde RS41-SG and RS41-SGP, unless otherwise
mentioned. RI41 refers to both RI41 and RI41-B, unless otherwise mentioned.
Table 1 Manual Versions
Manual Code Description
M211667EN-G May 2018. Updated images for the improved cover version of RS41.
M211667EN-F June 2017. Updated for the improved cover version of RS41.
M211667EN-E November 2016. Updated with the new Vaisala User Guide template.
M211667EN-D December 2015. Updated information on radiosonde LED light functionality.
Updated instructions for handling the balloon and the unwinder.
M211667EN-C March 2015. Updated for MW41 software release 2.3. Information on handling the
unwinder updated.
1.2 Related Manuals
Table 2 Related Manuals
Manual Code Description
DOC231720 Vaisala RS41 Unwinder Quick Guide
M211367EN Vaisala Guide to Sounding Preparations Technical Reference
M211429EN Vaisala DigiCORAâ Sounding System MW41 Getting Started Guide
- On-line help for Vaisala DigiCORAâ Sounding System MW41, available in the
sounding software user interface
Visit www.vaisala.com/RS41 to watch short videos on how to use the RS41 unwinder.
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RS41-SG and RS41-SGP User Guide M211667EN-G
1.3 Documentation Conventions
WARNING!
instructions carefully at this point, there is a risk of injury or even death.
CAUTION!
instructions carefully at this point, the product could be damaged or important data
could be lost.
Note highlights important information on using the product.
Tip gives information for using the product more eciently.
Lists tools needed to perform the task.
Warning alerts you to a serious hazard. If you do not read and follow
Caution warns you of a potential hazard. If you do not read and follow
Indicates that you need to take some notes during the task.
1.4 Trademarks
DigiCORAâ and MARWINâ are registered trademarks of Vaisala Oyj.
1.5
Regulatory Compliances
Vaisala Radiosonde RS41 complies with the following performance and environmental test
standards:
• 2004/108/EC Electromagnetic Compliance: EN 61000-4-2, EN 61000-4-3 and EN
55022 / EN 302 054-2
• ERM Electromagnetic Compatibility and Radio Spectrum Matters: ETSI EN 302054-1
and ETSI EN 302054-2
6
• RoHS compliance: RoHS Directive (2011/65/EC)
Chapter 1 – About This Document
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RS41-SG and RS41-SGP User Guide M211667EN-G
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Chapter 2 – Product Overview
2. Product Overview
2.1 Introduction to Vaisala Radiosonde RS41
Vaisala Radiosonde RS41 oers excellent data availability and accuracy of humidity,
temperature, pressure, and wind measurement. The radiosonde is fast and stable with
individual, SI-standard traceable calibration.
Vaisala Radiosonde RS41 temperature sensor utilizes linear resistive platinum technology.
The small size of the sensor results in low solar radiation error and guarantees fast response.
Wind data, height and pressure are derived from Vaisala Radiosonde RS41 GPS data
combined with
Robust design, Physical Zero Humidity Check and In-built Functional Temperature Check
ensure reliable performance in every situation. The radiosonde is also easy to use. For
example, there is no need for the user to connect the batteries to the radiosonde to activate
it. The radiosonde is automatically activated when placed on the ground check device. To
make it easier to check the status of the radiosonde, the radiosonde has LED light indicators
visible on the cover.
dierential corrected GPS data from the ground station.
To further improve the design of Radiosonde RS41, the radiosonde now has EPS covers
with plastic fasteners. This makes the radiosonde's look and feel slightly
before, but the radiosonde performance is still on the same high level. The plastic covers
have been removed to decrease the total plastic amount of RS41.
dierent from
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RS41-SG and RS41-SGP User Guide M211667EN-G
Figure 1 Vaisala Radiosonde RS41 with Unwinder
1 Sensor boom
2 Power switch
3 Additional sensor interface connector
4 Antenna
5 LED light
6 Unwinder
7 Unwinder stick
2.2 Unwinder
The unwinder is specifically designed for use with Radiosonde RS41. The unwinder is
installed to the radiosonde so that it bends the sensor boom to the correct sounding
position, ensuring repeatable results in the soundings.
Table 3 Unwinder Properties
Object Property
Material of the string Non-UV treated polypropylene
Tenacity <115 N
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Chapter 2 – Product Overview
Object Property
Length of the string 55 m
Unwinder weight with stick 29 g
The unwinders are shipped in the radiosonde package, packed separately from the
radiosondes. This allows the operator to prepare the balloon and the unwinder at a time that
is most convenient.
Figure 2 RS41 Unwinder
2.3
Radiosonde RS41 is shipped in a box with 40 radiosondes. The shipping box has been tested
following the standards to tolerate the mechanical and environmental transportation
conditions. Inside the shipping box, the radiosondes are packed in their own handling
packages.
Unwinders are packed in a separate cardboard box and shipped in the same box with the
radiosondes. The unwinder box contains 20 unwinders.
Packing
• The shipping box size is 740 x 400 x 320 mm (length x width x height), and it weights
10.9 kg.
• The unwinder box size is 375 x 300 x 70 (length x width x height), and it weights 0.8
kg.
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