Sofrel - Model LS -GSM/GPRS Data loggers LS for Drinking Water Networks

• Flow and pressure monitoring for leak detection
• Remote reading of network meters and management of consumption
• Control of pressure regulation valves…

GSM/GPRS data loggers designed to be installed in buried manholes

Our LS/LT data loggers are specially designed to be installed in manholes liable to flooding.

Their sturdy design and military-strength connections guarantee total watertightness (IP68). Their clamping ring enables the user to access the SIM card and the battery on site.

They are powered by a lithium battery with a battery life of up to 10 years.

Their GSM communication modes (SMS or GPRS) are based on a high-performance internal antenna specially designed for use in a buried manhole (an external antenna can be used if GSM signal reception is difficult).

Designed according to an industrial process and manufactured to the most demanding quality standards, the LS/LT data loggers are covered by a 3-year warranty.

A complete range

LS data loggers for the remote reading of district meters and for leak detection on drinking water distribution networks: 

• SOFREL LS42 (4 DI + 2 optional AI),
• SOFREL LS42EA (4 DI + 2 optional AI + remote antenna)
• SOFREL LS10 (1 DI for a single meter).
• SOFREL LS-V (4 DI + 2 optional AI) for pressure regulation valve control
  SOFREL LS-FLOW (1 AI) + 1 serial link for ABB Aquamaster and SIEMENS MAG 8000 flowmeter status reading

Reliability of transmissions

Although GSM coverage is broadly speaking quite adequate above ground, reception level can easily drop by 30 dB in underground installations such as sewer overflows or metering enclosures. 

LACROIX Sofrel has thus relied on its expertise in electronics and telecoms and has invested a great deal in developing a very high-performance antenna.

SOFREL LS/LT data loggers transmit their historical values and balances/reports every day to 1 or 2 PCWin2 SCADA Central Stations, a supervisory control software system, an OPC server or an LS web server. The network contract operator can then extract recorded data and draw up its operating reports.

On a change of state in a digital input (DI, level thresholds exceeded, sensor fault), the data logger can issue an alarm to a mobile telephone.

Easy to install and use

LACROIX Sofrel has endeavoured to offer products that are very easy to implement and use:

• Local maintenance is activated by an activation key. When activated, a visual diagnosis with LEDs of different colours let you control start-up/shutdown, the presence of the SIM card, the connection to the GSM network and reception level.

• The highly practical Bluetooth link enables the technician to work on the configuration, including outside the manhole. He can perform GSM communication tests (search the GSM operator offering the best coverage, test the positioning of the LS in the manhole, etc.). Data can also be processed on site via a Bluetooth link.

SOFREL LS: Solution for water network district metering
Watertight, battery-powered and communicating via GSM/GPRS, the SOFREL LS is a data logger specifically designed for applications involving remote metering and drinking water network district metering.

Functions specific to district metering and leak detection

• Metering and flow
• Recording of metering index following configurable period
• Calculation of average flows
• "In/Out" meter management
• Measurement
• Pressure monitoring
• Calculations and archiving
• Automatic calculation of average, daily and night flows
• Archiving of values by type of information (metering, reports, etc.)
• Signals and alarms
• DI attributable to contacts (buffer opening, etc.)
• Definition of thresholds
• In the event of change of status or exceeded threshold (communication to centralisation system / sending of alarm SMS)

Configuration and operation in an intuitive graphic environment

Configuration of the SOFREL LS is very easy to perform by means of a particularly user-friendly configuration wizard.

• The data logger is operated locally by Bluetooth link
• The archived values (metering, measurements, daily reports) are sent every day by SMS for exploitation
• Transfer of data with curve graphs and Excel tables

Remote communication
The archived values (metering, measurements, daily reports) are sent every day by SMS or GPRS for exploitation:

• Central Station
• Supervisor
• OPC server
• WEB LS

Watertight, battery-powered and communicating via GSM/GPRS, the SOFREL LS is a data logger specifically designed for key account customers and interconnection remote metering and water system diagnostics.

Functions specific to district metering and leak detection

• Metering and flow
• Recording of metering index following configurable period
• Calculation of average flows
• "In/Out" meter management
• Measurement
• Pressure monitoring
• Calculations and archiving
• Automatic calculation of average, daily and night flows
• Archiving of values by type of information (metering, reports, etc.)
• Signals and alarms
• DI attributable to contacts (buffer opening, etc.)
• Definition of thresholds
• In the event of change of status or exceeded threshold (communication to centralisation system / sending of alarm SMS)

Data centralisation

Installing LS data loggers leads to a rapid return on investment. Combined with centralised tools, they provide in-depth knowledge and optimal management of networks (improved efficiency, continuous monitoring, etc.).

Centralisation and remote use of data thanks to effective, user-friendly tools, gives operators an overview and accurate indicators on how their networks are performing. They can monitor changes in network efficiency, calculate losses per mains length, closely monitor consumption and take rapid action over network leaks.

The archived values (metering, measurements, daily reports) are sent every day by SMS for exploitation:

• Central Station
• Supervisor
• OPC server
• WEB LS