Instrument extends deployments, conserves power, and withstands harsh environments

FORT COLLINS, COLORADO, March 18, 2009
In-Situ Inc. announced today the new Aqua TROLL^® 100 instrument for continuous measurement and logging of conductivity, salinity, and temperature. Water quality professionals use conductivity measurements to characterize water quality changes relative to a baseline or to estimate the concentration of contaminants. The Aqua TROLL 100 is an ideal instrument for monitoring saltwater intrusion, tracking movement of tracers and saltwater fronts, evaluating impacts of deicing chemicals on groundwater and surface water, estimating groundwater recharge rates, analyzing storm surge events, assessing estuary and wetland restoration projects, conducting remediation projects, and monitoring discharge.

To extend deployments, the titanium housing resists fouling and safeguards against corrosion in marine and other harsh environments. In addition, the integrated reference electrode compensates for light sensor fouling. Equipping the Aqua TROLL 100 with the new TROLL^® Shield antifouling system will further reduce biofouling and lengthen instrument deployment by six weeks or more depending on site conditions. Internal batteries are guaranteed for five years when reading every 15 minutes. External batteries, solar power, or external 8-36 VDC options are also available.

For telemetry and SCADA systems, the Aqua TROLL 100 offers open-architecture communication protocols, including Modbus RS485, SDI-12, or 4-20 mA signal outputs. Telemetered units can be accessed directly or via the secure, web-based In-Situ^® Data Center.

The Aqua TROLL 100 instrument includes linear, linear average, and event logging modes with a one per second logging rate and four megabytes of memory for up to 380,000 data points (time and date plus one parameter logged). Industry-leading Win-Situ^® software, standard with each instrument, simplifies instrument setup, automates site management, displays data graphically, and provides real-time data and instrument status. For added flexibility, the instrument also derives and reports values for salinity, total dissolved solids (TDS), resistivity, and water density.

The Aqua TROLL 100 instrument is now commercially available. The instrument easily connects with the In-Situ RuggedReader^® handheld PC, a laptop, or a TROLL^® Link telemetry system.

ABOUT IN-SITU INC.
In-Situ^® Inc. designs, manufactures, distributes, and rents environmental equipment for monitoring the quantity and quality of groundwater and surface water. From advanced aquifer characterization to long-term monitoring to economical data collection, In-Situ instruments provide accurate results and reliable operation even in harsh conditions. In-Situ Inc.'s headquarters are located at the foot of the Rocky Mountains in Fort Collins, Colorado, USA. In-Situ offers world-class technical support 24 hours a day, 7 days a week through its global network of regional offices and distributors.

In-Situ, RDO, TROLL, and Win-Situ are registered trademarks of In-Situ, Inc.