Veeder-Root Sensor Application Guide 15 Hydrostatic Reservoir Sensor The Hydrostatic Reservoir Sensor accurately detects fluid level change in the reservoir and interstice of a doublewall storage tank. This sensor is available in a dual-point or single-point configuration. The Dual-Point version is ideal for high groundwater areas, and can differentiate between a high level alarm condition and a low level alarm condition. If an inner-wall leak occurs, the brine seeps into the tank triggering a low level alarm, if an outer wall leak occurs, fluid seeps into the interstice triggering a high level alarm. The Single-Point version can be used in low groundwater locations. If an inner-wall leak occurs, the brine seeps into the tank triggering a fuel alarm, or if the outer wall leaks, the brine seeps out of the tank interstice triggering a fuel alarm. Sensor Detection Capabilities - Alarm Conditions • Dual-Point Version - Leak in inner wall triggers a low level alarm - Leak in outer wall triggers a high level alarm in high groundwater areas or a low level alarm in low groundwater areas. - An open sensor triggers a sensor out alarm. • Single-Point Version - Leak in inner or outer wall triggers a fuel alarm in low groundwater areas. - An open sensor triggers a sensor out alarm. Operating Capabilities • Operating temperature range: -25 to +50°C. • Storage temperature range: -40 to +60°C. • Operates in salt brine solution of up to 30% CaCl. • Cable length: 12 feet • Sensor dimensions: Single Point - 6” high, 2.5” diameter; Dual Point - 17.3” high, 2.5” diameter. Sensor Interface Module • TLS-350 series consoles (except TLS-350J) - Interstitial/Liquid Sensor interface module (P/N 329358-001) accepts up to 8 sensors (a maximum of 64 sensors could be monitored by the console). • TLS-350J console - 4 sensors max. • TLS-300i, PC-300i, TLS-300C, TLS-300J, PC-300C consoles (no Interface Module required)- 8 sensors max. • TLS-450 - USM (P/N 332812-001) accepts up to 16 sensors Console Software Compatibility • TLS-350 series/TLS-300 (Version 1 or later) • TLS-450 (All) Sensor Configuration • Single-Point Sensor - Form Number 794380-301 • Dual-Point Sensor - Form Number 794380-303 Related Sales Literature Visit our website at www.veeder.com for more information on Veeder-Root products and services. Cord grip 14'' min. dia. manhole Seal-off sensors\hssenap.eps 1/2'' rigid conduit (to console) Float Dual-point hydrostatic sensor Double-wall tank Riser pipe cap Reservoir Brine level Weatherproof junction box Fig. 12 Typical Hydrostatic Dual-Point Sensor Installation
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