LSI

Weather instrumentation and air quality solutions

Air quality 

M-Log

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The compact and versatile data logger M-Log is a line of compact data loggers for environmental monitoring, suitable for portable indoor applications. Small and flexible, but also powerful and reliablem M-Log can be used in virtually unlimited environmental applications. Typically M-Log (ELO009) is used on a portable tripod fot Thermal Environmental measurements for the assessment of thermal comfort and stress, air quality, ventilation measurements, thermo-hygrometric measurements for assessing the energy efficientcy of buildings and HVAC tests. The ELO008 model, having terminal block input, is more suitable for measurements always in the field of environmental monitoring, but in industrial situations. Typically, thanks to the Modbus-RTU protocol (Master/Slave), it is used as an interface between sensors and systems such as PLCs, as well as storing processed values and sending instantaneous values to PC.

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Net radiometer

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Sensor for measuring the radiant heat flow Also designed for environments with low air velocities in which it is possible to obtain a measurement close to the plane average radiant temperature with the direction of the heat flow. The integrated air temperature sensor allows the calculation of the planar radiant asymmetry value on the three axes. Portable use is possible or can be attached to a stand for extended measurements.

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R-Log – Radio Data logger

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The data logger for wireless networks R-Log data logger is a line of compact data loggers for environmental monitoring, suitable for portable indoor applications, but also fixed for continuous monitoring. R-Log can be connected to a wide range of LSI Lastem’s sensor. R-Log can receive measurements via radio from radio sensors, or from other R-Log units in order to create a wireless sensor network. Small and flexible, but also powerful and reliable, R-log is used in multi-measurement (different parameters) and multi-point (different measurement points) applications.

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SO2/ NO2/ CO/ H2S/ O2/ O3/ NO/NH3/ CO2/ VOC sensors

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Range of sensors for measuring gas concentration in indoor environments. The line includes sensors with cables and mini-DIN connectors, to be used with LSI Lastem data loggers type M-Log (ELO009) and R-Log (ELR510.1) and sensors with 4-20 mA output that can be used by third party systems or LSI Lastem data logger with inputs terminal block. The sensors are based on electrochemical cell technology. Only the CO2 sensors are based on infra-red cell technology and the VOCs sensors on the PID cell technology.

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Air velocity 

Portable hot wire anemometer probe

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LSI LASTEM supplies a vast range of indoor monitoring sensors addressed to their own data acquisition device as well as to third part data management systems. The sensor range include sensors for portable application as well as fix application.

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Meteorology 

Air Quality

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Meteorological conditions are important information in Air Quality Monitoring Sy-stems and Networks. As the fate of air pollutants is influenced by the movements and characteristics of the air mass into which they are emitted, no air quality data is com-plete without an accurate in situ record of meteorological conditions. Atmospheric dy-namics determine the formation, transport, deposition and dilution of the pollutant. Primary meteorological variables for AQM applications include Wind Speed, Wind Di-rection, Air Temperature and Relative Humidity, Atmospheric pressure, Radiation and Rain. The turbulence index of the atmosphere typically refers to the atmospheric stabil-ity which is an important information to analyse the deposition and dilution of the pol-lutant over a certain area. Characterization of atmospheric stability for dispersion mod-elling purposes involves measurements of temperature, radiation intensity and wind speed.

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Air temperature and relative humidity

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Thermohygrometers for any type of environmental application Wide range of precise and reliable sensors designed for continuous meteorological measurements even in severe climatic conditions and in the presence of strong thermal and hygrometric variations. Temperature measurement principle RTD Pt100 1/3 DIN B (Class AA EN60751) and capacitive humidity.

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All-in-one sensors

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Up to six parameters from the same sensor body Sensors integrates a unique folded-path sonic anemometer with a multi-element temperature sensor, fast-response capacitive relative humidity sensor, state-of-the-art barometric pressure sensor. Alternative versions are equipped with photodiode radiation sensor or optical rain sensor. The result is a professional grade All-In-One Weather Sensor designed for reliability, longevity, and ease of installation. Two classes of sensors are available; Standard made in aluminum and Compact series made in plastic, with different size and different features concerning the wind measurement. All models can be connected to any LSI Lastem data logger on serial port COM2 using its Modbus output protocol.

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Alpha-Log

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The most powerful data logger of the LSI Lastem family Alpha-Log is the latest addition to the LSI Lastem data logger family. It contains the most efficient technical solutions assimilated in more than 40 years of experience by LSI Lastem with its data acquisition systems. Alpha-Log was created with the clear need to be an independent acquisition system, but also integrable in more complex systems. Based on a Linux architecture, it contains the power of this operating system, but also the extreme low consumption of its acquisition part. Also the part of usability and data management in addition to that relating to the outputs has been taken care of in consideration of the most modern needs.

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Asphalt state temperature, aqueous film, freezing and residual salt

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Wide range of sensors for continuous monitoring of the conditions of asphalt surfaces Different versions of the same sensor are made to measure also the underground temperatures using separate sensor units. Main difference between DQA352 and DQA353 is the better accuracy of the DQA353 in the Water film thickness and Freezing point temperature specifications. DQA352 has RS485 output with an open protocol suitable for connection to LSI Lastem and Boschung data loggers as well as third part integration systems. DQA353 has a Boschung proprietary protocol only. DQA352-353 sensors are made by Boschung Mecatronic AG.

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Atmospheric pressure

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High quality barometers for meteorological applications Sensors designed for accurate measurement of atmosperic pressure. DQA240.1 is more suitable for LSI-LASTEM data acquisition systems (0-1Vdc output). DQA801 is also suitable for integration in third part systems (0/4-20 mA output), its range is locally selectable by trimmer DQA251 is a high precision instrument for absolute pressure, QNH, QFE, QFF. Long-term stability and a web interface make it the perfect instrument for professional acquisition systems and meteorology, aviation. Heavy duty enclosure IP67, allows an easy installation also in harsh environmental conditions. This sensor is built according WMO and ICAO standards.

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Digital display

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Digital indicators for displaying sensor signals CAO is a range of display units including small display units (96×48 mm format) which receive different type of signals (impulse, mV, Vdc, mA). Some models are equipped with n.2 relay outputs in order to activate external devices using programmable thresholds. All models are equipped with optical led, it can be activate when the measurement is out from a programmable range.

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E-Log

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The data logger for meteorological monitoring E-log has been explicitly designed for environmental applications: it is equipped with specific inputs for a wide range of sensors and calculations of derived quantities. E-Log stores the data from the connected sensors and supports different communcation protocols both in input and output. Robust and reliable, E-Log makes measurements possible even in the most severe environments, while the 16-bit A/D converter ensures accurate and reliable data in classic meteorological, hydrological and air quality applications and – more generally – in any environmental application.

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Evaporation

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System for measuring evaporation LSI-Lastem evaporimeter pan and plastic platform are built to WMO standards for class “A” evaporimeters.The pan is made in stainless steel. The platform is made of white plastic. The pan features a stainless steel still well fit to contain the evaporimeter level sensor. The sensor consists of a piezometric water level sensor with analogue output for easy connection to any data acquisition systems. LSI-Lastem data loggers can manage the switching of a solenoid valve for the automatic refill of water (when the measured level is below 25 cm).

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First rain display and regulator

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System for the management of rain and washing waters LSI Lastem supplies a range of digital display to display the quantities and convert the signals coming from the supplied sensors. First rain condition is the first 5 mm of water rained in a given period of time. More than 5 mm of rain it it treated as “further rain” condition. DGP020 display, connected to a rain gauge, informs through its relay about the rain condition status. Also, it shows on the display the total rain, the rain intensity and the duration of the rain event.

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Gidas Viewer

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GIDAS Viewer is the LSI Lastem program for viewing historical data downloaded from data loggers (through 3DOM, CommNET and P1-CommNET). The program uses the data in the SQL GIDAS database and produces tables and graphs, both of raw data and of reprocessed data, according to different time bases that can be selected by the user. The re-elaborations can be exported as Excel files ( CSV) or text files ( TXT), the graphs can be saved as images (* JPG). The program allows you to save data view filters (Views), with the possibility of including data from more than one station at the same time, using the same settings without having to re-edit them. The display can include one or more quantities acquired by one or more devices in order to aggregate data from different data loggers.

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M-Log

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The compact and versatile data logger M-Log is a line of compact data loggers for environmental monitoring, suitable for portable indoor applications. Small and flexible, but also powerful and reliablem M-Log can be used in virtually unlimited environmental applications. Typically M-Log (ELO009) is used on a portable tripod fot Thermal Environmental measurements for the assessment of thermal comfort and stress, air quality, ventilation measurements, thermo-hygrometric measurements for assessing the energy efficientcy of buildings and HVAC tests. The ELO008 model, having terminal block input, is more suitable for measurements always in the field of environmental monitoring, but in industrial situations. Typically, thanks to the Modbus-RTU protocol (Master/Slave), it is used as an interface between sensors and systems such as PLCs, as well as storing processed values and sending instantaneous values to PC.

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MSB – Modbus sensor box

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Signal converter (Voltage, Pt100 and Frequency) to RS485 with Modbus RTU protocol Sensor conditioning unit to convert (Volt, Pt100 e Hz) signals into RS485 over RTU Modbus protocol. It can receive signals from different sensors on the market as: solar irradiance sensor, also pyranometers (configurable sensitivity value), temperature sensors (Pt100), wind speed sensor (Hz) and Storm distance sensor.

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Particulate concentration

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Optical technology for continuous measurements The fine dust sensors are optical sensors for continuous measurement and control of fine dust contents, three particulate sizes are available: simultaneous PM10 and PM2.5, and separate PM 2.5 and PM10. The determination of the dust content is based on the method of scattered light measurement. The sucked air is tempered. The flow enforcement takes place via the integrated fan (2 l/min). In the device there is a periodic control and correction of zero point and reference point which is enabled by the electrostatic precipitator with integrated high voltage module. A high zero-point stability is achieved by evaluation of the internal measuring signals.

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Rain presence

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Sensor for measuring the presence of precipitation Rain presence sensors are used when it is necessary to discriminate between rainfall and condensation. The measurement principle employed is that of conductivity between two electrodes; these are kept above environmental temperature by heaters in order to prevent condensation.

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Rainfall

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Rain gauges suitable for every need Wide range of sensors to measure the quantity and intensity of precipitation. Our rain gauges are composed of a precipitation collection funnel that conveys the water into a double-tank receiver connected to a magnet. The magnet activates a read relay which generates a pulse that can be counted from an external counter. Models are available equipped with a siphon positioned at the end of the collection funnel to regulate the flow of water in the event of heavy rainfall. This solution is ideal when the goal is to measure the total rainfall over a long period, not to measure the intensity. Class A models are available which, following calibration in an internal laboratory, comply with the European standard UNI EN 17277: 2020, which defines the accuracy for measuring intensity and how to calibrate the instrument and correct the data.

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R-Log – Radio Data logger

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The data logger for wireless networks R-Log data logger is a line of compact data loggers for environmental monitoring, suitable for portable indoor applications, but also fixed for continuous monitoring. R-Log can be connected to a wide range of LSI Lastem’s sensor. R-Log can receive measurements via radio from radio sensors, or from other R-Log units in order to create a wireless sensor network. Small and flexible, but also powerful and reliable, R-log is used in multi-measurement (different parameters) and multi-point (different measurement points) applications.

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Snow level

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Sensor for measuring the height of the snowpack The robust design of DQL011.1 makes it the ideal solution for reliable measurement of snow-depth in extreme conditions.The additional air-temperature detection feature guarantees precise readings over a wide temperature range. The powerful ultrasonic impulses emitted by this sensor deliver reliable readings even when there is a difficult reflection ratio, as is the case with powdery or fresh snow. The sensor is characterized by a high level of operating reliability, low energy consumption and ease of use in the field.

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Soil moisture and temperature

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Sensors for measuring the temperature and volumetric content of water Series of sensors designed to measure inside soils or other porous materials. This sensor is the ideal solution for the measurement of volumetric moisture in soils and other porous materials. The sensor is based on TDR technology (Time Domain Reflectometry), ensuring good accuracy even in very wet soils, and without special calibration for mineral soils. Using its rods, the sensor can be inserted in the material for 11 cm or fully burried inside the soild. It measures both soil moisture (0-100% range) and temperature.

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SOLAR ENERGY - Monitoring equipment

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For an operating Photovoltaic Plant, the main exogenous limitation to optimal performance is represented by the environmental conditions and by soiling presence on the PV module surfaces. The main environmental parameters as solar radiation, the basic feedstock of the system, and temperatures, influence performances of the plant, and less-heralded factors such as wind speed, wind direction, rainfall, concur to generate the environmental conditions determining the potential expected plant yield against which actual plant performances are measured. For this reason monitoring of the environmental characteristics of the site and, on the other hand, of the PV module itself, can give parameters to calculate the efficiency of the power plant. The key variables to be monitored are: global irradiance, air temperature and module temperature, diffuse irradiance. Also wind speed, wind direction, rain and storm distance are key factors in the field of risk prevention during extreme events.

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STB – Sensor Transducer Box

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4-input converter for a wide range of signals Four inputs signal conditioning unit to converter Voltage, Pt100, Thermocouples and Frequency signals into 4÷20 mA. It can receive signals from different sensors on the market as: solar irradiance sensor, also pyranometers (configurable sen-sitivity value), temperature sensors (Pt100 and thermocouples) and wind speed sensor (Hz).

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Storm front distance

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For the measurement of electrical emissions into the atmosphere Detection of the storm front distance (not lightning strike intensity) within an area of in 5÷40 km range. Utilizing a sensitive RF receiver and integrated proprietary algorithm, all models detect the electrical emissions from lightning activity and then provide for an estimation of the distance to the head of the storm from 40 km away, while rejecting disturbances from manmade signals such as motors and microwave ovens. The estimated distance which is detected idoes not represent the distance to the single lightning but the estimated distance to the leading edge of the storm.

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Surface freezing temperature of the asphalt

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Sensor for a very accurate measurement of the freezing temperature This sensor is an active sensor, which performs measurements by cooling a sensor cell (Peltier cell) to a temperature of 15 ° C lower than that of the road surface. This series brings a great advantage in airport applications, where the thawing agent is not allowed, it also ensures the accuracy of the measurement of the freezing temperature as required by the European standard EN15518. This sensor has RS485 output with an open protocol suitable for connection to LSI Lastem and Boschung data loggers as well as third part integration systems. This sensor is made by Boschung Mecatronic AG.

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Surface temperature, asphalt state and aqueous film

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Series of sensors for monitoring the condition of the asphalt Different versions of the same sensor are made to measure also the underground temperature using separate sensor units. DQA356 has RS485 output with an open protocol suitable for connection to LSI Lastem and Boschung data loggers as well as third part integration systems. DQA356 sensor is made by Boschung Mecatronic AG.

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Visibility

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Sensors for measuring visibility and present weather Wide range of sensors designed for monitoring on roads and in tunnels. Models with a wide measuring range are available to detect fog and haze; models with both digital and analog outputs, as well as relays for activating external equipment to be integrated into intelligent transport systems and used to automatically switch warning signals in changing visibility conditions. All models are also “Present weather” sensors, that is, they can measure the intensity of precipitation by providing the analysis of water particles: fog, rain, snow or mixed form.

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Weather observations

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Weather monitoring: what is it for? Meteorological measures have multiple uses that make them of primary importance for monitoring areas, of different sizes, and for managing extreme situations, such as floods, exceptional snowfalls, strong winds or harmful solar radiation. Professional weather stations are used to monitor the parameters that are the basis of the complex algorithms of forecasting models. Long time series of reliable and quality weather data make a valuable contribution to climate change research both locally and at the mesoscale. What is a weather station made of? A weather station is typically composed by a series of sensors for the measurement of the various parameters: solar radiation, wind direction and speed, air temperature and humidity, precipitation, atmospheric pressure and others. All the data are stored in a data logger, which has the task of archiving them, processing the first calculated quantities, and managing the communication of the data to a web-based software or to a traditional server. The weather station is installed on one or more physical structures such as poles and towers depending on the place of installation. There are some clear prescriptions from W.M.O. (World Meteorological Organization) on the proper installation of the weather stations, to obtain quality data that are representative of the climatic zone. The continuous operation of all equipment is guaranteed by the power supply, either from the power grid or solar panels. In this last case, the size of the panel is calculated based on the number of sensors, the rate of data acquisition and transmission and the availability of solar radiation (latitude, frequent or long-lasting cloud cover). The station is completed by the data transmission system, via modem, radio or more rarely via cable.

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Wetness presence

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Sensor for the presence and persistence of water on the leaf surfaces The leaf wet presence sensors detect the presence of water over the leaf surface irrespective of the source. Sensors is based on the principle of conductivity between electrodes, which are arranged on the double sensitive surface.

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Wind polar unit

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For displaying real-time wind speed and direction It shows on digital display the instant and maximum wind speed value in knots, MPH, Km/H, m/s It shows instant wind direction (alternately to max wind speed) and shows the wind direction on a polar display made by 36 led with the last 10 acquisitions information. Information regarding instant wind speed and direction measurements can be replaced by the average values over a programmable time base. Polar wind display unit informs about alarm situation over wind speed and direction using led and relay contacts. It has 0-5 Vdc (and RS485, ASCII file) output for wind speed and direction. More units (up to 16 units) can be mounted together over a RS485 line.

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Temperature & Humidity 

Heat Shield

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  • WBGT

Heat Shield includes globe temperature, wet bulb temperature the, dry bulb temperature and relative humidity and displays on-line WBGT indoor & outdoor index, Heat Index and Humidex. Thanks to its built-in radio technology, Heat Shield can support up to two satellite units to calculate WBGT at different levels (As per the recommendations outlined in ISO 7243: 1989) or in different locations. When equipped with the anemometer, the unit can be also used for accurate thermal environments analysis thanks to the most advanced software available on the market for this purpose, GlDAS TEA.

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Thermal comfort 

Gidas Viewer

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GIDAS Viewer is the LSI Lastem program for viewing historical data downloaded from data loggers (through 3DOM, CommNET and P1-CommNET). The program uses the data in the SQL GIDAS database and produces tables and graphs, both of raw data and of reprocessed data, according to different time bases that can be selected by the user. The re-elaborations can be exported as Excel files ( CSV) or text files ( TXT), the graphs can be saved as images (* JPG). The program allows you to save data view filters (Views), with the possibility of including data from more than one station at the same time, using the same settings without having to re-edit them. The display can include one or more quantities acquired by one or more devices in order to aggregate data from different data loggers.

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Heat Shield

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  • WBGT

Heat Shield includes globe temperature, wet bulb temperature the, dry bulb temperature and relative humidity and displays on-line WBGT indoor & outdoor index, Heat Index and Humidex. Thanks to its built-in radio technology, Heat Shield can support up to two satellite units to calculate WBGT at different levels (As per the recommendations outlined in ISO 7243: 1989) or in different locations. When equipped with the anemometer, the unit can be also used for accurate thermal environments analysis thanks to the most advanced software available on the market for this purpose, GlDAS TEA.

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Portable hot wire anemometer probe

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LSI LASTEM supplies a vast range of indoor monitoring sensors addressed to their own data acquisition device as well as to third part data management systems. The sensor range include sensors for portable application as well as fix application.

More info