Veeder-Root TLS-50 Series Manual

Also see for TLS-50 Series: Setup and operation Quick help

Contents

Veeder-Root TLS-50 Series Manual Manual pdf 18 page image

Probe Installation Installing Field Wiring from Probes to TLS-50 Console13Installing Field Wiring from Probes to TLS-50 ConsoleTwo wiring run methods are commonly used for probes - Shielded wiring pulled through buried, sealed 1/2” rigidconduit (discussed in the following paragraphs); or direct burial cable (discussed on page 15).Buried Rigid ConduitThe preferred method, especially in new sites before driveway surfaces are paved, is to pull probe wiring throughburied 1/2” rigid conduit [Figure 10].Figure 10. Example Probe Wiring Run in Buried Rigid ConduitPull shielded cable consisting of two conductors, color-coded #14-18 AWG stranded copper wire, between theconsole and the junction box at each probe location (do not gang wires together). Use single lengths of wire withno splices to ensure optimum signal strength.IMPORTANT! Maximum probe-to-console cable length is 1000 feet (305m).Since wires for multiple probes may enter the console through a single conduit, it is recommended that you use adifferent color-code for each wire or individually mark each wire to identify probe inputs. Also, if the intrinsicallysafe wires enter the building in a wiring trough, only intrinsically safe wires (from TLS-50/-50C probes) can be inthe trough. Keep all low power (intrinsically safe) wiring physically isolated from high power wires in all wiringtroughs per the NEC.WARNINGProbes operate in areas where flammable liquids and explosive vapors may be present.Improper installation may result in fire or explosion causing serious injury or death.Practice the following:1. Read thoroughly and follow the instructions shipped with each probe.2. Probe wiring conduit must not contain any other wires.3. Probe wiring and conduits must enter the console only through their designatedareas (see Figure 4).4. Power and communication wires and conduit must not enter the intrinsically safecompartment of the console. (see Figure 4).Cord grip sealsWeatherproof junctionbox with 1/2-inch N.P.T.threads (16 cubic inchminimum)Epoxy seal per NFPA specprobes\pconduit.eps1/2'' rigid conduit (to console)Tank.. .... ..... ..... ...... .... .. .... ...... ..... ..... .... ..... ..... .... ..... ..... ...... .... ..... ....... .... ...... .. ...... .... ..... .... ...... .... ..... ... ... .......... . ... ...... .... ..... ...Seal-OffSplice Closure