LSI LASTEM Alpha-Log Скачать руководство пользователя страница 81

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Alpha-Log

–

User manual

LSI LASTEM SRL

INSTUM_03388

Page 81 / 116

4.2.8.1

How to receive data on a smartphone

On the market are available several apps to receive an MQTT br

oker’s topics. Below is an example with the

app MyMQTT for Android.
MyMQTT is downloadable on

https://play.google.com/store/apps/details?id=at.tripwire.mqtt.client&hl=en

On the first start the app warns the user that there are no notifications
(

No notifications found… Add a new topic!

). Press on the message.

Press

[Connect]

Enter

Broker URL

and

Port

(ad es. 151.58.122.27 e 1883,

§2.2.6.4).

Press

[Save]

Press

[Settings]

Press

[Subscribe]

Enter

Topic

(e.g. for instant values:

device/ALP001/19070279/metrics/inst

Press

[Add]

Here is the screen with the main menu, where the notifications of
incoming messages (data) appear.

Here the MyMQTT dashboard, where the user can see data coming
(instant values).

The values update depends on MQTT’s parameter

Inst. values publishing

time rate

(§2.2.6.4).

Содержание Alpha-Log

Страница 1: ...Environmental monitoring solutions Alpha Log User manual...

Страница 2: ...ick e 17 11 2021 Description of Input types f 29 03 2022 Update based on Alpha Log fw v 2 06 g 04 07 2022 Added description of wind processing elements and the Declaration of conformity Notes on this...

Страница 3: ...2 Setup of the operative mode based on the available energy 17 2 2 3 Setup of the log file rows concerning diagnostic information 18 2 2 4 Alpha Log sensors configuration 18 2 2 4 1 Configuring sensor...

Страница 4: ...LIEM Alpha Log Input Extension Module 34 3 2 Guide to first starting of ALIEM 36 3 2 1 Connection to PC 36 3 3 Configuring ALIEM 37 3 3 1 Configuring ALIEM sensors 38 3 3 2 Configuring ALIEM sensors n...

Страница 5: ...ogic assigned to an action 59 4 1 11 Uploading configuration file to Alpha Log 60 4 1 11 1 Sending via SSH connection 60 4 1 11 2 Sending via USB pen drive 60 4 1 11 3 Sending via FTP server 61 4 2 In...

Страница 6: ...down 85 5 1 2 Use of the keyboard 85 5 1 3 Operating status LEDs 86 5 1 4 Menu navigation 86 5 1 4 1 Logging 87 5 1 4 2 Diagnostic 88 5 1 4 3 System 90 5 1 4 4 Maintenance 90 5 1 4 5 Advanced features...

Страница 7: ...features To facilitate the reading of the manual using electronic devices such as PCs tablets and smartphones the references to the various chapters indicated with the character to the tables figures...

Страница 8: ...2 2 4 2 C No Yes Yes A 2 Connection of ALIEM to the PC and registration of ALIEM SN inside 3DOM 3 2 1 3 ALIEM configuraztion 3 3 4 Sensors connections to ALIEM 3 4 5 Check acquisition of ALIEM measur...

Страница 9: ...ry time rate in alarm conditions 2 2 8 F Use MQTT 23 MQTT parameters configuration 2 2 6 4 No No No No END 24 Send configuration to Alpha Log 2 2 10 25 ALIEM connection to Alpha Log 0 F Use of ALIEM 2...

Страница 10: ...also integrated into more complex systems Based on a Linux architecture it contains the power of this kind of operating system but also an optimized hardware with extreme low consumption Also the usa...

Страница 11: ...EDs 10 Terminal block INPUTS Pulse Freq1 Pulse Freq2 for impulsive and frequency signals Pt100 platinum resistance thermometer SDI 12 SDI 12 serial line Com5 LCD On display activation external contact...

Страница 12: ...on devices turn off the power discharge the accumulated electrostatic charges touching a conducting material or a grounded device Do not start up the product if water or condensing humidity is present...

Страница 13: ...ouTube 2 3DOM Powering the device Alpha Log 2 Powering the device YouTube 3 3DOM How to set Ethernet port to connect PC to Alpha Log Alpha Log 3 How to set the PC Ethernet port to connect PC to Alpha...

Страница 14: ...network instead 1 Insert the LAN cable into the Alpha Log Ethernet 4 port and to the network socket 2 Connect a 12 30 Vdc power supply to the terminal 14 16 of the terminal block 10 3 Turn on Alpha L...

Страница 15: ...n is accessible after about one minute since the instrument s ignition 3 Insert the USB stick in one of Alpha Log s USB ports 8 By reference to 5 1 4 5 3 4 Choose Upload config and press then confirm...

Страница 16: ...Alpha Log 4 Setting Alpha Log as Modbus slave device YouTube If Alpha Log is connected to ALIEM modules start first the ALIEMs configuration 3 3 then configure Alpha Log unit by importing the measurem...

Страница 17: ...stead of the factory serial number It is possible to set the Alpha Log name and geographical information Time zone is needed to assign the time stamp to the measurements Go to Registry User and Site i...

Страница 18: ...d launch the search 3 or select the code from its category 4 and press Ok If the sensor hasn t been found see chapter 2 2 4 1 4 Select Add a new input type e g DMA672 1 Analog input and press Add 5 Se...

Страница 19: ...Data Logging section and press Add 2 Press 1 Create a new empty measure 3 Select Input type based on the sensor type 2 For more information about the input types see 4 1 5 4 Set the parameters relati...

Страница 20: ...chapter Title YouTube link QR code 14 Alpha Log ALIEM How to import an existing ALIEM configuration inside an Alpha Log pre set configuration Alpha Log 14 How to import an existing ALIEM configuratio...

Страница 21: ...boration type scalar vector and total The following will describe the operations using scalar type elaborations repeat the procedure with other typologies if any 7 In the Set elaborations for imported...

Страница 22: ...User manual Once completed the configuration of all probes channel it is possible to list them as wished In the next step will be to configure the instrument connectivity 2 2 5 Configuring Internet co...

Страница 23: ...server you only need to set Configuration to DHCP If on the contrary it is a static address set Configuration to Static address and specify IP address Subnet mask and Gateway For further information...

Страница 24: ...m 2 Press Test 10 to perform a connection test to the FTP site 3 enable the Configuration Authority checkbox 9 4 Press Ok 11 If Configuration Authority is enabled each time the configuration is saved...

Страница 25: ...be synchronized using the time given by the following NTP sites The time used keeps into consideration the time zone as set in the Registry For more information see 4 1 3 2 2 6 4 MQTT protocol Example...

Страница 26: ...data recording and processing system For more information contact the commercial service by writing to info lsi lastem com 2 2 6 7 Modbus RTU Slave protocol Example of parameters to send data via Mod...

Страница 27: ...the FTP protocol it is better to use the SFTP which allow to access to the whole Alpha Log file system 2 2 8 Data delivery to FTP and MQTT server or USB memory Typically Alpha Log send data in the fo...

Страница 28: ...ces such as sensors modems or alarm devices Additionally it can also send e mails SMS and MQTT messages All these actions take place when some specific logic conditions occur If the used configuration...

Страница 29: ...parameters is required the PC must be connected to the Internet press Yes and then Continue 3DOM will ask if it is needed to send the configuration to the instrument If yes press Yes and confirm with...

Страница 30: ...a USB stick or FTP server see 4 1 11 2 and 4 1 11 3 respectively 2 3 Connecting probes to Alpha Log The probes must be physically connected to Alpha Log according to configurations It is recommended t...

Страница 31: ...ed in the second if there are more than one ALIEMs one or more RS 485 HUBs must be used One ALIEM module connection via RS 232 Several ALIEM units connection via RS 485 Alpha Log can manage on its RS...

Страница 32: ...E C T I V I T Y E t h e r n e t W i F i P P P S M S S e t d e f a u l t I P Example of Ethernet port setting C F G S T A T I C I P 1 9 2 1 6 8 0 1 N M 2 5 5 2 5 5 2 5 5 0 G W 0 0 0 0 If modem is used...

Страница 33: ...rument serial number 2 Select Data Storage 1 from the 3DOM tool bar 3 Double click to select the data format required 2 The green mark advise that the selection has been activated For data download 1...

Страница 34: ...y Alpha log It measures the instant values from the sensors connected it does not perform any statistical processing and makes them available to Alpha Log through the Modbus RTU protocol on the RS 232...

Страница 35: ...ct1 5 6 An2 8 9 10 11 An3 12 13 14 15 18 Act2 16 17 An4 19 20 21 22 An5 34 35 36 37 40 Act3 38 39 An6 41 42 43 44 An7 45 46 47 48 51 Act4 49 50 An8 52 53 54 55 Digital input Terminal board GND Actuato...

Страница 36: ...file in ALIEM module using 3 DOM Alpha Log 9 ALIEM sensors configuration starting from empty configuration YouTube 12 Alpha Log ALIEM Upload configuration from 3DOM program to ALIEM module Alpha Log...

Страница 37: ...y configuration Moreover some configuration models are available Alpha Log configuration templates In both cases it is required to start from one of these configuration models and to adapt it accordin...

Страница 38: ...of the library is already appropriately set to be sampled by ALIEM Follow the steps below to check if the sensors are available in the library 1 In General Parameters section select Measure 1 2 Press...

Страница 39: ...not from the sensors library 1 From section General Parameters select Measures 1 2 Press New 2 3 As Measure behaviour select Acquired sensor 4 Set the remaining items of the General tab 5 Set the item...

Страница 40: ...the physical connection of the probes has been completed instant values can be viewed on 3DOM 1 Make sure that your PC is connected to ALIEM Com1 serial port 2 2 Turn on ALIEM by means of the On Off s...

Страница 41: ...ata The parameters in Device Identifier are editable These are Use an alternative serial code if set on Yes Alpha Log uses Alternative serial code instead of Serial number Alternative serial code the...

Страница 42: ...the regular mode the instrument set up its internal components to be always on so that they are always ready to communicate with the external devices at the expense of a higher power consumption In t...

Страница 43: ...the network connection in accordance with the protocol intended to be used 3DOM allows the user to configure the following network connections Ethernet If configured it permits SSH connection through...

Страница 44: ...ameter Dev must be set to dev tty SP3 Other parameters are those related to the telephone operator ATTENTION Password is stored not encrypted inside the configuration file Default value not configured...

Страница 45: ...onizing the Alpha log clock using the time obtained through an Internet server The configured servers are those of the NTP POOL PROJECT pool ntp org 0 pool ntp org 1 pool ntp org etc It is preferable...

Страница 46: ...he modem to Select COM1 Default value not used Speed is the speed Alpha Log communicates with the modem Select the same communication speed set in the modem Default value 38400 bps Parity parameter us...

Страница 47: ...after a timeout Fig 14 Com2 port configuration for Modbus RTU example Configuration parameters related to the Com4 also can be found in Input types in the Measurements acquisition section Select and o...

Страница 48: ...age applying a 100 resistor between terminals 17 18 For this type of input Alpha Log uses a filter to reduce the noise produced by the mains power supply During setup it is possible to choose the freq...

Страница 49: ...of the pulses Each impulse is given by each movement of the spoon across the magnetic o Total rain it is the rainfall recorded within the sampling rate 2 2 4 o Tip interval it is the time elapsed betw...

Страница 50: ...s It is associated with the COM4 port Fig 2 The parameters relating to the Thermo hygrometer type are the following Communication port it is the serial port where the sensor is connected It is not pos...

Страница 51: ...the sensor specifications Register it is the register containing the data to be read The first register starts from the address 0x0000 Data format it is the format of the data produced by the sensor A...

Страница 52: ...parameters 4 1 5 9 Boschung The Boshung type is used by Alpha Log for the acquisition of LSI LASTEM sensors with Boschung protocol It is associated with the COM2 4 and COM3 ports Fig 2 of the data log...

Страница 53: ...M User manual The manual is available as 3DOM online help Help User s manual 4 1 7 Elaboration parameters Alpha Log manages the measures elaborations as defined in the elaboration parameters In the no...

Страница 54: ...mperature limits of these devices You should be sure that your memory stick has an industrial protection grade as the LSI LASTEM XLA010 memory stick Most of the sticks are tested to operate in environ...

Страница 55: ...he Alpha Log for more info 2 2 1 containing the following files config json the current configuration available at the time of the export procedure HDR txt zero or more header files one for each proce...

Страница 56: ...is more than 4 2 and deactivated when the value is less than 3 8 Within this logic is activated when the measurement value is greater than the lower threshold plus the hysteresis value and lower than...

Страница 57: ...etermines how long the measurement must remain inside the limit for the logic deactivation 4 1 9 2 Timer logic Fig 17 it is an example of Timer logic Fig 17 Example of Timer logic It is possible to co...

Страница 58: ...tor is active when at least one logic status assigned is on The actuator assigned to a logic can work in low power mode off when the logic status assigned is off on when the status turns to on or in s...

Страница 59: ...logic status occurs Alpha Log exits from any low power mode and start sending data using the value reported in General parameters Elaboration data delivery rate in alarm condition 4 1 7 MQTT when the...

Страница 60: ...rrent one Port Fig 20 SSH connection to Alpha Log with factory IP address example To know the Alpha Log s IP address see 5 1 4 5 1 If the instrument does not have an IP address or it isn t in the same...

Страница 61: ...1 11 3 Sending via FTP server Alpha Log supports FTP protocol for the file transmission in client server mode This type of transmission assumes the FTP server to already be configured properly The FTP...

Страница 62: ...mission on one or more FTP servers the measures acquisition the actuators activation etc Therefore keeping the clock synced is important Alpha Log synchronizes the clock in the following circumstances...

Страница 63: ...on of the sun The calculation of the position elevation of the sun is obtained by an adaptation of SolarPosition realized by Ken Willmott github com KenWillmott SolarPosition You can choose between tw...

Страница 64: ...ation corresponding to the measurement obtained from a flat installed pyrometer I is the direct radiation obtained from the heliometer or another similar sensor obtained from the measurement calculate...

Страница 65: ...ion of the sun 4 2 3 1 and the coefficients A and B respectively set to the default values 0 73 and 0 06 Fig 27 Example of calculated measurement configuration of type Sun visibility Meteo France 4 2...

Страница 66: ...Set Enable Penman Monteith elaboration to Yes Then proceed to the compilation of the required fields according to the measures available on the data logger The elaboration results are stored in a spec...

Страница 67: ...ications EPA February 2000 To access the configuration 1 From section Estensions select Calculation Modules 2 Select Pasquill Gifford stability class calculation and press Edit 3 Set Enable Pasquill G...

Страница 68: ...ard atmosphere Since the standard formula has not yet been officially defined Alpha Log proposes the choice of three different types of calculation QNH WMO Table QNH ISA QNH ICAO The formula of type Q...

Страница 69: ...Alpha Log User manual LSI LASTEM SRL INSTUM_03388 Page 69 116 Fig 29 Table 3 10 reported in International Meteorological Tables WMO No 188 TP 94 1966...

Страница 70: ...MO ET Stand 1 Doc 10 20 XI 2012 Fig 31 Fig 31 Reference to equation No 7 given in CIMO ET Stand 1 Doc 10 20 XI 2012 Fig 32 Example of calculated measurement configuration of type QNH ISA Lastly the ty...

Страница 71: ...airstrip D Wind direction measured near the airstrip Dr Orientation direction of the landing strip with direction of travel relative to the indicated angle Consider the following aspects The direction...

Страница 72: ...wing vector calculations Prevailing average direction It is the vector angle value calculated as the vector sum of all wind components measured by the data logger within the selected statical time bas...

Страница 73: ...mes the wind direction has been excluded from the calculations of the above indices as they are not significant In case of total absence of wind during the processing period CalmPerc assumes the value...

Страница 74: ...se the extended file name for FTP transmission is enabled in 3DOM s Elaboration Parameters 4 1 7 the instrument will save files with the extended name Extended name Mxxxxxxxx CyyyyMMddhhmmss Bnn Eyyyy...

Страница 75: ...20171020122500 txt C20171020081421 B01 E20171020123500 txt C20171020081421 B01 E20171020124500 txt Fig 36 Files processed by Alpha Log example 4 2 5 1 Header files To define the processed data files i...

Страница 76: ...the measurement name ElElab UM is the items list of the elaboration followed by the measurement unit MEASURES includes the information on measures one measure on a single row Serial Latitude Longitude...

Страница 77: ...e item refers to followed by the items as described in the header file s HEADER section Datetime Serial Latitude Longitude Altitude UserSerial SiteName TimeZone Name_ElElab_1_ UM _m_1 Name_ElElab_n_ U...

Страница 78: ...on elaborated data files The result of evapo transpiration calculations according to Penman Monteith 4 2 3 4 are contained in text files txt identified as follows Name penman_yyyy1 MM1 dd1 hh1 mm1 ss1...

Страница 79: ...orated data files The result of Pasquill Gifford stability class calculation 4 2 3 5 are contained in text files txt The file naming is the same as the original files with the addition of SRDT before...

Страница 80: ...t S N latitude longitude altitude etc in the Elaboration Parameters 4 1 7 Possible topics to subscribe to are the following Argomento topic Descrizione device model serial metrics inst Instant values...

Страница 81: ...e user that there are no notifications No notifications found Add a new topic Press on the message 1 Press Connect 2 Enter Broker URL and Port ad es 151 58 122 27 e 1883 2 2 6 4 3 Press Save 4 Press S...

Страница 82: ...a files WEB server is not active by default To activate it follow the instructions reported at 2 2 7 1 To connect to Alpha Log it is sufficient to set the data logger IP address 2 2 5 in the address b...

Страница 83: ...e displayed the measures values in table and graphic form Fig 43 INSTANT VALUES page with the instant values visualization In the ELABORATED DATA page it s possible to download Alpha Log s data csv by...

Страница 84: ...Alpha Log User manual LSI LASTEM SRL INSTUM_03388 Page 84 116 In the SYSTEMS LOGS page it s possible to display the log files generated by Alpha Log Fig 45 SYSTEM LOGS page for Alpha Log s diagnostic...

Страница 85: ...the data logger turns the display off approximately after one minute 5 1 2 Use of the keyboard The keyboard consists in four buttons two of them are directional and the other two are functional The ma...

Страница 86: ...tion activity is ongoing on any serial port Wrk This LED green lights up to indicate any measurement activity of signals connected to the instrument it also briefly lights up if an event is registered...

Страница 87: ...t m P r e s s u r e 1 0 0 1 8 Mask Example where nnnnnnnnnnnnnn is the name of the measure in expanded format dddddd is the measure s value Err means the measure is in error In the compressed form it...

Страница 88: ...e event s description text Indication L means that a logic set during configuration occurred while A shows the corresponding action A logic example could be L Level ON Lev 6 3 m and the corresponding...

Страница 89: ...considers the time zone D T d d M M y y h h m m s s D T 1 8 0 1 1 8 1 6 2 3 4 5 R E S E T d d M M y y h h m m R E S E T 2 3 1 1 1 7 1 4 5 2 S T A T U S t t t t t t t t t t t t S T A T U S r u n n o r...

Страница 90: ...c o n t i n u e E n t e r t o c o n t I n u e E s c t o a b o r t E s c t o a b o r t If the operation is not allowed in that moment instrument will show the message Denied now In this case try again...

Страница 91: ...I T Y E t h e r n e t W i F i P P P S M S S e t d e f a u l t I P S e t D H C P R e s t o r e c o n f i g Ethernet In this screenshot are shown Ethernet port s information that identify Alpha Log in...

Страница 92: ...the name of mobile phone operator s access point Access Point Name for the Internet connection SMS In this screenshot are listed the telephone numbers of the SMS message addressers Set default IP Thro...

Страница 93: ...one of the two available ports The MEMORY menu allows the user to access the two types of memory showing capacity and occupied space M E M O R Y I n t e r n a l E x t e r n a l Internal Shows the inst...

Страница 94: ...he new settings Upload configuration file In this screenshot it s possible to save Alpha Log s current configuration on the USB pen drive S e n d c o n f t o U S B W a i t o p e r a t i o n s P r e s...

Страница 95: ...ion tests F T P S E R V E R S L i s t T e s t List Shows the names of the configured FTP servers Test Runs a test to check if the FTP servers configured are available T e s t F T P s e r v e r s W a i...

Страница 96: ...nts o Errors Diagnostic o Serial lines o Status o Actuators System o Advanced mode o About Maintenance o Suspend logging Advanced features o Connectivity Ethernet WiFi PPP SMS Set default IP Set DHCP...

Страница 97: ...using a Voltmeter Even though the instrument turns on with only 6 V it s recommended to have a voltage of at least 12 V especially if the switched power outputs for the sensors powering are being use...

Страница 98: ...t also the PC one one green and one yellow are lit If they aren t Alpha Log won t feel the network signal The cable might be fault or the socket it is connected to might not be connected to the networ...

Страница 99: ...errogated within this time itt turns off its serial port 3 If the measure is calculated a At least one main measure is in error Determine the cause b Check the measure configuration See the measure s...

Страница 100: ...sion may not occur 3 Ensure the entered recipient s telephone number is correct and active 4 1 9 4 Ensure the SIM is active enabled for message transmission and has enough credit 5 Check the modem con...

Страница 101: ...he wires that connect Alpha Log to the battery and the photovoltaic panel On of them might be loose b Check the battery status If it s damaged replace it If it s low check panel s efficiency Alpha Log...

Страница 102: ...detect and fix possible measurement errors 6 3 Contacting LSI LASTEM LSI LASTEM offers its assistance service at support lsi lastem com or filling out the Request for technical assistance module down...

Страница 103: ...10 Tot 01 00 Tot 24 00 Tot Last 10 min Mobile tot Last 60 min Mobile tot Pulse Freq1 DMA672 3 Temperature C 00 01 00 00 10 Min Med Max DevStd 01 00 Min Med Max DevStd 24 00 Min Med Max DevStd TTL Ser...

Страница 104: ...15 LEVEL m 00 01 00 00 10 Min Med Max DevStd 01 00 Min Med Max DevStd Last 60 min Mobile min Last 60 min Mobile max increase Type 2 configuration Alpha Log AIO rain Alpha Log Sensor Quantity DMA672 1...

Страница 105: ...Min Med Max DevStd 01 00 Min Med Max DevStd RAIN mm 00 01 00 00 10 Tot 01 00 Tot 24 00 Tot Last 10 min Mobile tot Last 60 min Mobile tot INSideTemp C 00 01 00 00 10 Min Med Max DevStd 01 00 Min Med Ma...

Страница 106: ...tdDir Calm AIRTemp C 00 01 00 00 10 Min Med Max DevStd 01 00 Min Med Max DevStd 24 00 Min Med Max DevStd RELHumid 00 01 00 00 10 Min Med Max DevStd 01 00 Min Med Max DevStd ATMPress hPa 00 01 00 00 10...

Страница 107: ...DevStd 01 00 Min Med Max DevStd Serial 2 WindDIR N 00 00 01 00 10 DirPrev DirRis VelRis DevStdDir Calm 01 00 DirPrev DirRis VelRis DevStdDir Calm AtmPres hPa 00 01 00 00 10 Min Med Max DevStd 01 00 Mi...

Страница 108: ...90 Logics Name Measure reference value Description Tot Rain last 10 min beyond limit RAIN Last 10 min Mobile tot Logic is activated when the precipitation detected in the last 10 minutes is higher tha...

Страница 109: ...last reading of the air temperature is lower than 35 C AirTemp Inst within limits Temperature Inst Logic is activated when the last reading of the air temperature ranges from 0 C to 35 C AirTemp Inst...

Страница 110: ...sories Ethernet cable DIN rod attachment RS 232 USB adapter RS 232 cable DIN rod attachment Power supply 6 30 Vdc 8 14 Vdc Technical characteristics Analogic inputs on optional external module MDMMB11...

Страница 111: ...ector with 3 3 V pullup resistance positive input Max input frequency 480 kHz for impulsive inputs 10 kHz for frequency inputs Linearization YES with intensity correction formula for Class A pluviomet...

Страница 112: ...ms for one minute RS 485 input output Inputs number 1 Mode Connection to sensors Modbus RTU Master protocol Connection to SCADA PLC systems Modbus RTU Slave protocol Powering Isolated 3 kVdc RS 232 in...

Страница 113: ...DC Resolution 12 bits oversampled up to 14 bit Filter Noise filtering 50 60 Hz Data transmission Modem External 3G 4G modems connection to RS 232 port Router 3G 4G External radio connection to Etherne...

Страница 114: ...ty cycle 0 01 Battery charger 17 V min Protections IEC 61000 4 2 ESD 30 kV air 30 kV contact Protection against self restorable PTC fuses overcurrent Reverse polarity protection Power input overvoltag...

Страница 115: ...Alpha Log User manual LSI LASTEM SRL INSTUM_03388 Page 115 116 Generic connection scheme...

Страница 116: ...Alpha Log User manual LSI LASTEM SRL INSTUM_03388 Page 116 116 Dichiarazione di conformit Declaration of conformity...

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