Water & Wastewater Asia Jul/Aug 2018

WATER & WASTEWATER ASIA July / August 2018 TECH ROUND UP / 61 Perfect for ATEX environments Even installed underground with no power supply, and in humid and potentially explosive environments, the SOFREL LT-US ATEX is able to overcome all these constraints thanks to: • Its ATEX zone 2 certified case • I ts ATEX zone 1 cer t i f i ed ultrasound probe • Its long-life internal battery (up to 10 years’ battery life) • And its built-in high-performance 2G/3G antenna , spec i a l l y designed for use underground. An ultrasound probe entirely controlled by the data logger Fully integrated into the LT-US ATEX, the ultrasound probe offers a precise measurement of the height of effluents. In addition, the twin- step archiving enables overflow detection to be performed directly by ultrasound measurement, hence, maintenance is considerably reduced as compared to the submerged detector solution. In ATEX zone 1, the ultrasound probe is placed as close as possible to the effluents being measured. Its 5m or 10m cable helps to maintain the data logger in the ATEX zone 2. In fact, implementation is easy: • The LT-US ATEX can be started up in just minutes. • Thedataloggerandtheultrasound probe are calibrated very easily thanks to the SOFTOOLS graphical user interface. This s o f t wa r e c a n t e s t b o t h measurement quality and GSM reception. Find out more As an effective solution for telemetry and SCADA of the wastewater networks, the SOFREL LT-US ATEX offers numerous functions needed for diagnostics and self- monitoring of wastewater networks. For instance, the flow rate and water volumes can be calculated directly based on the measured level thanks to conversion tables built into the data logger. Warning thresholds can also be set using height or flow rate values. Although GSM coverage is by and large acceptable above ground, reception level falls considerably with underground installations. As a specialist in telecommunications for more than 40 years, LACROIX Sofrel has invested heavily in the development of its data loggers to offer an antenna that is now a benchmark for its reception qualities — ensuring a reliable connection. The LT-US ATEX transmits its historical values and balances daily via 2G/3G to the SCADA Central Stations, Supervisor, OPC server or WEB LS server. And when the threshold exceeds or if there is a change in the situation, an alert is sent via SMS message. WWA Even installed underground with no power supply, and in humid and potentially explosive environments, the SOFREL LT-US ATEX is able to overcome contraints

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