Data Acquisition & Telemetry


Wireless remote level measurement from Instrotech

May 2011 Data Acquisition & Telemetry

Data collection on the levels of groundwater, waste water and mobile tanks on vehicles is easy and convenient with the Keller GSM-2 remote data transmission unit and integrated data-logger. Measurements, trends and monitored limits can be sent from the logger direct to a PC for analysis, or transferred to a mobile phone via SMS.

The cylindrical design of the GSM-2 allows the data-logger, which ‘self-dials’, to be accommodated in the top of a sounding pipe used in groundwater measuring equipment. The housing is designed to withstand condensation and also submersion for short periods and the antenna is protected by a lockable plastic cap.

Equipped with energy efficient electronics and a robust lithium battery, the logger can send results for up to 10 years at a speed of one measurement per minute. Two voltage inputs, two digital inputs, an RS485 interface for up to five level sensors or the optional SDI12 interface for water analysis units, make the GSM-2 data-logger a universal module for wide area measuring networks. Air pressure and temperature sensors integrated into the unit ensure long-term stability within the range of a few millimetres.

The heart of the system is the user-friendly PC software DataManager that works as a central monitoring, controlling and organising unit. This software acquires, allocates, and displays the measurements in graphical format, stores them in a mySQL database and provides a signal when limits are exceeded. Third parties can access the measurements using various export and Internet functions for integration into data acquisition systems. All parameter settings and monitoring of the individual GSM-2 data-loggers is carried out using the DataManager software.

For more information contact Pieter Deysel, Instrotech, +27 (0)11 462 1920, [email protected], www.instrotech.co.za



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