Toshiba LF414 Instruction Manual

Also see for LF414: Manual

－２３－６Ｆ８Ａ０８７０4.2.2 Installation ProcedureTo mount the LF414, place it between the upstream and downstream pipe flanges and tightenit with flange bolts and nuts. See Figure 4.4 and follow the procedure below:1. Insert two lower mounting bolts through the clearance holes in the upstream (or downstream)pipe flange.2. Install a packing next to the upstream (or downstream) flange face and the other packing nextto the downstream (or upstream) pipe flange. The two mounting bolts can now be guidedthrough the clearance holes in the downstream packing and flange.3. Place the LF414 flowmeter detector between the two flange packings, with the flowmeterdetector body above the two bolts. The flowmeter must be oriented in accordance with theflow direction arrow.4. Install the two upper mounting bolts through the clearance holes in the upstream and downstreampackings and flanges. Then install the remaining mounting bolts depending on the flange pattern used.5. Thread nuts on both ends of the 4 (or more) mounting bolts, finger tight. (See Table 4.1 Bolt length andtightening torque)6. While centering the flowmeter with the longitudinal axis of the pipeline, tighten the nuts with awrench diagonally across in even increments. (See Table 4.1 Bolt length and tightening torque)Note that the flowmeter detector pipe axis must be aligned with the pipeline axis on bothupstream and downstream sides. This is essential to have stable characteristics of flowmeasurement (especially for flowmeters with meter sizes of 50 mm or less).IMPORTANTWhen high-temperature fluid is being measured, radiant heat from the detector pipe surface andadjoining pipes may cause the ambient temperature of the converter to go above 60 °C. If theambient temperature goes above 60° C, try to lower the temperature by measures such as wrappingheat-insulating materials over the detector pipe and adjoining pipes.Figure 4.4 LF414 flowmeter detector piping connections