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0 System. Components The TC-3000 system consists of three basic 2-Wire Connector Cable—This non- The parts. A monitor which continuously reads a degradable cable is used between monitor- 100K resistor that has been placed at the end of ing wells for 2-wire probes to connect one the cable. A drop in resistance, a short or break probe to another. it makes connection by in the cable will signal an alarm. The com- tmeans of a aches to eachpendwater resistant plug at- ponents which make up the system are des- cribed as follows: 4-Wire Monitor Cable—This non- Radial Combo Cable—This wire assembly degradable cable is available in a standard is used in double wall fiberglass tanks and length of 150' and is used to connect the Combo Cable in first tank to the TC-3000 some types of double wall steel tanks. It consists of bath our petroleum and water Monitor. Only one end of the Monitor Cable sensing cables inserted into the monitor fit- has a 4-pin plug, the other end is left bare ting and fished around the interstitial space for wiring into the monitor. of the tank. 2-Wire Monitor Cable—This non- 4-wire Vertical Combo Cable—This `� degradable cable is available in a standard Ling ly is used in jacketed steel tanks length of 150' and is used to connect the s e types of double wall steel tanks. It Petro Cable probe, in the first monitoring of both petroleum and water sens- well, with the TC-3000 Monitor. les, which is lowered down into the 4-Pin Terminating Plug—This plug is at- fitting (standpipe), at the lower endtached to the last length of Combo Cable ped tank. -m located at the tank which is at the end of the Petro Cable—This 2-wire sensor cable system. it's purpose is to complete cable is used in double wall fiberglass tanks the circuit of the entire cable system. (One and some types of double wall steel tanks. It per system) ; includes only the petroleum sensing cable 2-Pin Terminating Plug—This plug is st- and is inserted into the monitor fitting of the tached to the last length of a petro cable tank and fished around the interstitial space which is located at the monitoring station of the tank. furthest from the TC-3000 Monitor. it's pur- r Vertical Petra Cable—This d id eseannlo$ cable system. (One peis to complete r system) cable f the entire f cable is used in both jacket and double wall steel tanks as well as TC-3000 Monitor—This mounted monitor is ground monitoring wells. it monitors only located in the station and is connected to petroleum infiltration and not water. the system by the Monitor Cable. it has two Lateral Petro Cable—This 2-wire alarm circuits; one for signaling petroleum petroleum sensing cable is used for some infiltration and the other to signal water in- filtration. It is temperature compensated types of double wall piping as well as pipe and is designed exclusively for use with trench liners. It monitors only petroleum in- Total Containment sensing cables. A test filtration and not water. (Custom Sizes Only) switch permits daily inspection of the circuit 4-Wire Connector Cable—This non- for continuity and proper operation. degradable cable is used between tanks to `�� connect one Combo Cable to another. It Adaptor Coupling—This coupling is makes connection by means of a 4-pin designed to connect a 4-wire cable to a water resistant plug attached on each end. 2-wire cable. —2—