Sierra Series 830/840/860 Side-Trak™ and ... - Sierra Instruments

Series 830/840/860 Instruction ManualChapter 2 InstallationCaution!Only qualifiedpersonnel should installthe transducer.Installing the TransducerFollow the installation instructions that are applicable to your transducer’sprocess connection. For all NPT and 1/2-inch size fittings,see the piping recommendations given on page 2-3. Before use, allplumbing should be checked carefully for leaks and the transducerpurged with dry nitrogen. Make sure that the tubing is free fromburrs, or rims caused by cutting.Compression Fittings1. Position the transducer with the flow direction arrow pointingdownstream in the directionof flow.2. Verify the position of thefront and back ferrule asshown at right. Insert thetubing into the fitting. Makesure that the tubing restsfirmly on the shoulder of the fitting and that the nut is fingertight. Scribe the nut at the six o’clock position.3. While holding the fitting body steady with a backup wrench,tighten the nut 1-1/4 turns, watching the scribe mark make onecomplete revolution and continue to the nine o’clock position.For 1/16-inch, 1/8-inch and 3/16-inch (2, 3 and 4 mm) sizes,tighten only 3/4 turn from finger tight. Do not over-tighten!4. Check the system’s entire flow path thoroughly for leaks. (Donot use liquid leak detectors, instead monitor pressure decay.Over-exposing the transducer to leak detector fluid may damagethe unit.)VCO Fittings1. Position the transducer with the flow direction arrow pointingdownstream in the direction of flow.2. Tighten the nut finger tight, and then 1/4 turn tighter with awrench. Do not over-tighten!3. Check the system’s entire flow path thoroughly for leaks. (Donot use liquid leak detectors, instead monitor pressure decay.Over-exposing the transducer to leak detector fluid may damagethe unit.)IM-83/84/86-H 2-3