Toshiba LF414 manual Installation Procedure, － ２７ －, ６Ｆ８Ａ０８７０

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4.2.2 Installation Procedure

To mount the LF414, place it between the upstream and downstream pipe flanges and tighten it 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 next to the downstream (or upstream) pipe flange. The two mounting bolts can now be guided through the clearance holes in the downstream packing and flange.

3.Place the LF414 flowmeter detector between the two flange packings, with the flowmeter detector body above the two bolts. The flowmeter must be oriented in accordance with the flow direction arrow.

4.Install the two upper mounting bolts through the clearance holes in the upstream and downstream packings 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 and tightening torque)

6.While centering the flowmeter with the longitudinal axis of the pipeline, tighten the nuts with a wrench 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 both upstream and downstream sides. This is essential to have stable characteristics of flow measurement (especially for flowmeters with meter sizes of 50 mm or less).

IMPORTANT

When high-temperature fluid is being measured, radiant heat from the detector pipe surface and adjoining pipes may cause the ambient temperature of the converter to go above 60 °C. If the ambient temperature goes above 60° C, try to lower the temperature by measures such as wrapping heat-insulating materials over the detector pipe and adjoining pipes.

Figure 4.4 LF414 flowmeter detector piping connections

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