12-64B, 8-66B Installation, Operation andTroubleshooting GuideDocument 06EN003322 Rev. -Step 1. Pre-InstallationA. To get the best results, the sensor should be mounted 20 pipe diameters downstream from any flow disturbance(valve, pipe elbow) and 10 pipe diameters upstream from any disturbance.24 Hour Factory Service Hot Line: 1 (800) 854-1993B. Verify the serial numbers on the enclosures, flow element and electronics (control circuit) match. The instrumentmay not work if the serial numbers do not match.Tag LocationOn the top side of the local enclosureThe instrument tag shows the model number, tag number (ifnoted on the order) and serial number along with otherimportant safety information. Compare this information with theappropriate pipe installation drawings to be sure the instrumentis the correct configuration. Match the tag serial number on theenclosure, flow element and control circuit.Electronics Serial NumberStep 2. Flow Element InstallationAlert: DO NOT change the orientation of the flow element in the enclosure as the interconnecting RTD andheater wiring could be stressed and damaged. DO NOT apply any torque to the flow elementenclosure - only apply to the pipe surface itself.Install the flow element, with the Flat Up and Level (shown above) or parallel to the flow media (±2°) for top mountedinstruments. The enclosure, flow element and electronic control circuit card serial numbers should all match.Flow Element Serial Number.Also Showing Sensor Orientation Flat.(Located near the enclosure.It is also on the enclosure tag.)C. Recommended installation/troubleshooting tools are a 1-3/8 inch open ended wrench to fit the NPT connection, asmall flat blade screw driver for manipulating potentiometers, a medium flat blade screwdriver for tighteningconnections, 3 mm allen wrench for CENELEC approved instruments, and a DVM for Ohm/Voltagemeasurements.