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TRUCHEK°— State-of-the-art continuous monitoring RUCHEKO hydrostatic tank monitoring for double-wall tanks is an easy, precise and rel able method for continuous leak detection and for tank -tightness testing. For two decades, TRUCHEK has been successfully monitoring thousands of tanks in many different types o- installations. Continuous Monitoring When you order a Xerxes double-wall tank with the TRUCHEK option, the interstice between the two tank walls is filled at the factory with a calcium -chloride fluid that also partially fills a reservoir, creating hydrostatic pressure throughout the interstice. An electronic probe placed in the tank's reservoir alarms when the fluid level either falls below or rises above the acceptable level. This increasingly popular method of leak monitoring gives tank owners greater peace of mind than the alternative method of using a simple liquid sensor, which often never detects an outer -wall breach. TRUCHEK has become the industry standard as a state-of-the-art technique for continuous monitoring. Changing regulat.ons in some markets now require that new double- wall tanks have continuous leak detection using a constant vacuum, air pressure or hydrostatic pressure in the interstice. TRUCHEK is the ideal solution to this growing regulatory requirement. Tank Tightness TRUCHEK also provides a simple, precise and reliable method to perform a tank -tightness test. The 10 -hour tightness -test procedure meets the suet NFPA329 criteria. A snorter 4 -hour test (while product is dispensing) exceeds EPAs criteria for a tank -tightness test. Flow does TRUCHEK work? Primary -Tank Leak in Wet Hole or Dry Hole Reservoir Level Down U a Secondary -Tank Leak in Dry Hole Reservoir evel Down : 0 = d Secondary -Tank Leak in Wet Hole Reservoir Level Up r Leak i.. _- Wall 5