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S <br /> Veeder-Root Sensor Application Guide <br /> Interstitial Sensors for Steel Tanks <br /> The Interstitial Sensor for steel tanks detects the presence of liquid between the double walls of the tank.An open <br /> sensor triggers a Sensor Out alarm. <br /> Table 11. Interstitial Sensor for Steel Tanks Features and Console Compatibility <br /> Item Description <br /> Form number 794380-420(16 foot[4.9m]cable);794380-460(30 foot[9.1m]cable) <br /> Operating principle Float switch <br /> Product activation height' 1.59 inches(4.05 cm) <br /> Operating temperature -4 to+1401(-20 to+60°C) <br /> Dimensions 2.5"(6.4cm)high,1.5"(3.8cm)diameter <br /> Compatible consoles TLS-450/TLS-450PLUS,TLS4/8601 Series,TLS-350 Series,TLS-300 Series <br /> Console Interface TLS-300 Series-No input module required <br /> Module <br /> TLS-350 Series,Interstitial/Liquid Sensor Interface Module,8 sensor input,P/N 329358-001 <br /> TLS-450/TLS-450PLUS-Universal Sensor Module(USM),16 sensor input,P/N 332812-001 <br /> TLS4/8601 Series-Universal Sensor Input Output Module(USIOM)(AC ver.),12 sensor input,P/N 333238-001;(AC ver.), <br /> 6 sensor input,P/N 333238-002;(DC ver.),12 sensor input,P/N 333238.003;(DC ver.),6 sensor input,P/N 333238-004 <br /> Maximum number of TLS-300 Series(8) <br /> sensors monitored per <br /> console TLS-350 Series(48) <br /> TLS-450/TLS-450PLUS(32) <br /> TLS4/8601 Series(12) <br /> Compatible fuels See"Sensor Application Matrix"on page 1. <br /> 'For additional third party evaluation data see:http://nwgide.org/evals/veeder_root_m.htmi <br /> Miscellaneous <br /> • Riser cap and adapter kit(2")- P '• weatherproof <br /> u. �a. � �� ® junction ox <br /> P/N 312020-928 ' <br /> • Installation example (see Fig.7) Manhole Seal-off <br /> --� <br /> Rigid conduit <br /> (to Console) <br /> 172"NPT <br /> cord grips <br /> a <br /> Appropriate reducer r----- ---- --with 1/2"NPT I I <br /> opening for cable <br /> cord grip I <br /> " I <br /> " I <br /> Leader cable <br /> e I <br /> , I <br /> B I <br /> Riser <br /> I I <br /> t I <br /> � I <br /> i I <br /> 1 I <br /> Tank <br /> I <br /> I <br /> I I <br /> it <br /> Sensor must reston bottom ofinterstitial riser <br /> r <br /> n <br /> 12 <br />