In March 2020 the huge dam of Neckartal was inaugurated in Namibia. This dam is fundamental to bring water to the Namibian desert and irrigate 5 thousand hectares of land, stimulating the agriculture and creating employment.This work, realized with the RCC technology (Roller-Compacted Concrete), is the biggest dam of Namibia: 80m high, 518 long and […]
“The $1.86 billion Forrestfield-Airport Link is jointly funded by the Australian and Western Australian governments and will deliver a new rail service to the eastern suburbs of Perth – with three new stations at Belmont, Airport Central and Forrestfield.The rail link will connect with the existing Midland line near Bayswater Station and will run to […]
Reference products codes: MINIOMNIA Mini OMNIAlog is a 4-channels datalogger designed for hard environment field use; it groups both high measurement accuracy, simple installation and web-based management software. MAIN FEATURES: No software required USB 2.0 Comm ports High performances over all working temperature range(-30°C +70°C) 2GB internal memory Vibrating wire built-in interface Excellent value for […]
Under EU financing, a Center for monitoring of impact of infrastructure on environment has been created within Technical University of Bucharest.The project was developed though an International Tender which was awarded to SISGEO. The aim was to provide Technical University with comprehensive list of geotechnical equipment, in order to allow University specialist to deal with […]
The Doha Metro is part of the Qatar Integrated Rail Programme, which also includes the Lusail City LRT, 38.8 km with 36 stations to be completed in 2016; the West Bay people-mover, a 10 km dual-track, single-bore tunnel with 19 underground stations, linking the new Doha Convention Centre with the West Bay area; a high-speed […]
It could be a problem connected to the power supply given by the readout or logger. When the power supply is in the current loop (2-wire gauge) it is necessary to consider the effect of voltage drop across the shunt resistor on the voltage applied to the gauge. For example, suppose a 4-20mA gauge requires […]
When you create the dial-up remote connection to communicate with miniOMNIAlog, there could appear an error regarding the driver of the Standard Modem 56000bps used for the connection. This error appears only if you use certain versions of Windows in languages different from Italian and English. This problem could appear both configuring manually the connection […]
FAQ#082 – Is there any precaution to adopt for the number of measurements saved on the OMNIAlog / miniOMNIAlog memory?
OMNIAlog is equipped with a microSD 2GB memory. This memory allows to save a very high number of readings. For this reason, it is necessary to bear in mind what follows: Therefore SISGEO strongly suggests to periodically download data and, later, to delete them from OMNIAlog memory. This way it is guaranteed an efficient data download.
FAQ#080 – What dimensions has the .CSV file in columns that contains the measures acquired with OMNIAlog and miniOMNIAlog?
The dimensions of the measures file “in columns” downloaded with OMNIAlog and miniOMNIAlog vary according to the number of sensors acquired and the stored cycles of acquisition. The higher is the number of sensors acquired and the number of cycles of acquisition stored, bigger is the dimension of the file. It could be used the […]
Yes, if miniOMNIAlog is equipped with 2G (GSM/GPRS) modem. To do so, the user must have already configured the relative web pages.
FAQ#076 – Why it is necessary add a termination resistor to the last digitized sensor of each RS-485 chain?
All SISGEO digitized instruments (IPIs, Tiltmeters, H-Level…) use the RS-485 serial communication protocol The RS485 protocol contemplate a termination resistor. The recommended chain connection is point-to-point (multidropped) nodes as a bus mode (line). Star, ring or multiply network connection are not recommended. SISGEO dataloggers has already a termination resistor assembled (typically 120Ω). On the opposite […]
The sensors are read connecting the end cable to a Modbus Master unit (i.e. OMNIAlog or miniOMNIAlog) with RS-485 interface (DCE, Half duplex, no Echo) able to manage communication with SISGEO Modbus RTU communication protocol. SISGEO’s communication protocol is available for the release upon request. The power [W] of power supply must be chosen according […]