Lufft CHM 15k Nimbus User manual

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1300m
1500m
Manual
Cloud Height Sensor CHM 15k

Dear User
2Revision R09, November 2016
Note
This Manual is protected by copyright. No part of the Manual may be reproduced in any way
(by photographing, photocopying, microfilm or any other technique) without the prior written
approval of G. Lufft, nor may it be processed, duplicated or disseminated with the help of elec-
tronic systems. Any offence against these rules will be prosecuted.
Proper care was used in compiling this document. No liability will be accepted in the event of
damage resulting from failure to comply with information provided herein.
Documentation number: 8350.MEP
This documentation is valid for the following instrument types:
CHM15k Nimbus series with order numbers: 8350.00, 8350.01, 8350.03, 8350.10
G. Lufft Mess- und Regeltechnik GmbH
Gutenbergstrasse 20
70736 Fellbach / Germany
Phone: [phone]
Fax: [phone]
E-mail: [email protected] (Info & Sales)
E-mail: [email protected] (Support Lufft Berlin)
Date Revision Comment
March 2014 I0 Firmware 0.723, last Jenoptik release
September 2014 R02 Firmware 0.724, Lufft design, range resolution in NetCDF available,
small corrections
December 2014 R04 Firmware 0.730, cloud algorithm optimized in precipitation cases,
parameter in RS485 / web-interface added, chapter 7-8 corrected
May 2015 R05 Firmware 0.732
October 2015 R06 Firmware 0.735, small fixes
November 2015 R07 Small fixes chapter 9, table SCI
October 2016 R08 Firmware 0.743, all chapter revised
November 2016 R09 small fixes
You are advised to read this manual carefully before you start using the
CHM15k Nimbus ceilometer.
This is necessary to ensure that you will be able to utilize all the capabilities, which have been
designed into the equipment.
This technology is subject to further development.

Content
Revision R09, November 2016 3
1 Basic Information 5
1.1 Manual Structuring & Layout Note . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Intended Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2Safety 7
2.1 Standards & Directives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 General Safety Measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Safety Notes Regarding the Laser System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4 Requirements on Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5 Safety Notes Regarding Transportation, Installation, Commissioning & Cleaning . . . . . 8
2.6 Safety Labelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.6.1 User Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.6.2 CHM 15k. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3TechnicalData 11
4 Technical Description 15
4.1 Setup of CHM 15k. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2 Functional units in inner casing space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.2.1 Functional Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2.2 Measuring and monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5 Transportation & Scope of Delivery 19
6 Installation 21
6.1 Installing the CHM 15k . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.1.1 Preparatory Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.1.2 Installation on the Mounting Base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.2 Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7 Starting Up & Shutting Down 27
7.1 Starting Up with serial connection RS485 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.2 Starting up with LAN connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.3 Shutting Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8 Communication RS485 & Ethernet 31
8.1 List of configurable instrument parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.2 Instrument Configuration using RS 485 interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.2.1 Reading a parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.2.2 Setting a parameter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.2.3 Change in Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.2.4 Reboot, restart and reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.2.5 Changing the logging time dt(s), date & time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8.3 Data Queries RS485. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8.3.1 Polling Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.3.2 Automatic Output Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.3.3 Standard Data Telegram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
8.3.4 Extended Data Telegram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.3.5 Raw Data Telegram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.3.6 User configured data telegrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
8.4 NetCDF Format Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
8.4.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Content
4 Revision R09, November 2016
8.4.2 Fundamentals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
8.4.3 File Names. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
8.4.4 Format Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
8.5 Service Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
8.6 Firmware Update. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
8.7 Communication via Ethernet - Web-Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.7.1 Time Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.8 AFD Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8.9 Telegram over Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
8.10 NetCDF file tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
9 Data Evaluation/ Sky Condition Algorithm (SCA) 65
9.1 Laser remote sensing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
9.2 Data preprocessing and averaging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
9.3 Backscatter data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
9.4 Cloud ceilings/ cloud base heights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
9.5 Cloud Penetration Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
9.6 Parameters for data evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
9.7 Determination of Maximum Detection Range (MXD) . . . . . . . . . . . . . . . . . . . . . . . . . 68
9.8 Vertical optical range (VOR). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
9.9 Precipitation and haze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
9.10 Mixed layer height. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
9.11 Cloud amount/ cloud cover (BCC / TCC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
9.12 Sky condition index (SCI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
10 Cleaning, Maintenance & Service Instructions 73
10.1 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
10.2 Maintenance Intervals & Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
11 DataClient - Terminal software for CHM 15k 77
11.1 Software Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
11.2 Convention for the file names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
11.3 Start dialog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
11.4 Communication tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
11.5 Raw Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
11.6 Telegram & Cloud Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
11.7 Service Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
11.8 Service & Software Update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
11.9 General available controls or indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
11.10 Autostart and command line parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
11.11 DataClient Software Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Annex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
List of Illustrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97
List of Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
Declaration of Conformity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100

Basic Information
Revision R09, November 2016 5
1 Basic Information
This User Manual provides the information that is required to operate the CHM 15k Cloud Height
Meter.
1.1 Manual Structuring & Layout Note
The Manual consists of eleven chapters, each page indicating the chapter title in its headline.
The bottom line of each page contains the details of the revision state, date of issue and page
number. In the appendix a content list of the service manual, a list of software releases for this
manual revision and a configuration example is applied.
1.2 Intended Use
Operating safety can only be guaranteed when the CHM 15k Cloud Height Meter is operated as
intended and in accordance with the information contained in this Manual.
The CHM 15k is only intended for single-phase operation powered by a public low-voltage distri-
bution system as stipulated in IEC38, 6th revision of 1983.
The Cloud Height Meter may be used with a maximum tilt angle setting of 20 degrees. Any angle
setting in excess of this limit will be regarded as non-conforming use! The owner (operator) will
be solely responsible in the event of damage due to non-compliance of this kind.
You are strictly prohibited from using the CHM 15k in a horizontal position.
For proper operation, scheduled cleaning and maintenance cycles must be observed (refer to
chapter 10 of this Manual or to the Service Manual).

Safety
Revision R09, November 2016 7
2Safety
2.1 Standards & Directives
To guarantee the safe operation of laser devices, all binding standards, directives
and instructions regarding laser safety and laser radiation protection must be
observed by manufacturers and users (refer to Declaration of Conformity).
The CHM 15k Cloud Height Meter is built and tested for compliance with
the following standards and directives:
1. Council Directive 2004/108/EEC
on the approximation of the laws of the Member States relating to
electromagnetic compatibility (EMC),
conforming to EN 61326 and EN 55011 standard requirements
2. Council Directive 2006/95/EEC
relating to electrical equipment designed for use within certain voltage lim-
its (73/23/EEC)
conforming to the following standards:
– EN 60825-1; Safety of laser products
– EN 61010-1; Safety requirements for electrical equipment for measure-
ment, control and laboratory use
In accordance with EN 60825-1:2007 and its inherent risk potential, the
CHM 15k qualifies as a class 1M laser device.
2.2 General Safety Measures
lAll safety notes in this User Manual, including any other applicable docu-
ments, must be duly observed and followed.
lThis User Manual must be kept within easy reach of personnel at all times.
lThe CHM 15k may only be operated with the inner door closed.
lThe CHM 15k Cloud Height Meter may not be powered by nominal volt-
ages other than 230 VAC.
2.3 Safety Notes Regarding the Laser System
There is invisible 1064-nm laser radiation emerging from the CHM 15k. It emits a
laser beam of very small divergence (< 0.5 mrad) and 90 mm beam diameter.
lDo not directly look into the beam.
lAvoid unnecessary exposure to invisible laser radiation.
lIt is strictly forbidden to use optical instruments, notably, field glasses, for
viewing the laser beam.
lClass 1M laser radiation, if viewed over an extended period of time,
may cause damage to the eyes such as glare or irritation or even full
loss of eyesight.
lMake sure the laser beam path is free from material with reflecting sur-
faces.
lFollow all instructions especially those on emergence of laser radiation (also

Safety
8 Revision R09, November 2016
refer to chapter 2.6 Safety Labelling).
2.4 Requirements on Personnel
lThe CHM 15k may only be installed and commissioned by properly trained
personnel who have received instructions on operating safety.
lMaintenance or adjustment work on the CHM 15k may only be carried by
G. Lufft GmbH service personnel or specially trained and authorized techni-
cians of the Customer.
lAnyone who is entrusted with work to install and commission the CHM 15k
must have completely read and understood this Manual.
lPersonnel working with the CHM 15k must not be in a state of fatigue or
under the influence of alcohol or medication or have physical impairments
of any kind that might temporarily or lastingly restrict their attention or
judgement.
2.5 Safety Notes Regarding Transportation, Installation, Com-
missioning & Cleaning
lFor handling, shipment or transportation, the CHM 15k must be duly pack-
aged and placed in the transporting position (refer to Fig. 5). Adequate
hoisting equipment and an appropriate means of transportation must be
used in all cases.
lOnce packaged, the CHM 15k must be secured and protected against acci-
dental shifting, mechanical shock or other similar impacts that may occur
inside the selected means of transportation, for example, by using tension
belts.
lA packaged CHM 15k must not be stacked.
lThe CHM 15k requires a footprint area of 50 x 50 cm. It must be installed
and assembled in a stable and fixed position on a suitably sized concrete
foundation. The maximum permitted inclination angle of the mounting
base is 5 mm/m.
lIf the CHM 15k is not intended to be assembled immediately, it must be
protected from external influences and securely stored.
lFor installation, the following minimum prescribed clearances must be kept
betweenthe CHM 15k and:
lPrevent irradiation from strong light sources.
lThe angle of insolation must be less or equal 15 degrees against the vertical
line. Please ask for a suiable adapter plates.
lThe assembly site must be at a great enough distance from tree plantations
or shrubbery to prevent leaves or needles restricting the cloud meter's light
outlet openings.
lAt least two persons are required for installation of the CHM 15k.
lOn completion of installation work, ensure that no safety-relevant changes
- mobile phones 2,5 m
- stationary emitters, ground stations (100 W of output power) 25 m
- a second cloud height meter (to prevent optical interferences) 10 m

Safety
Revision R09, November 2016 9
have impacted the CHM 15k during installation.
2.6 Safety Labelling
2.6.1 User Manual
Throughout this Manual the following pictograms and signal words are used:
DANGER
Warns of laser radiation
CAUTION
Warns of potential damage
NOTE
Important general note
NOTE
Important note on environmental protection

Safety
10 Revision R09, November 2016
2.6.2 CHM 15k
Product labelling is as follows (see Fig. 1):
l4 warning labels with safety notes
l1 plate with performance data
l1 "Beware of Laser Radiation" warning label
l1 type plate (rear side)
Fig. 1: Labelling
1