Toshiba GF630 Instruction Manual page 19

To mount the GF630 series, place it between the upstream and downstream pipe flanges and tighten
it with flange bolts and nuts. See Figure 4.5 and follow the procedure below:
1. Insert two lower mounting bolts through the clearance holes in the upstream (or downstream)
pipe flange.
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2. Install a gasket
to the downstream (or upstream) pipe flange. The two mounting bolts can now be guided
through the clearance holes in the downstream gasket and flange.
3. Place the GF630 series flowmeter detector between the two flange gasket, 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
gasket 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)
Note1: 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).
Note2: In the case of detector with CR or PU lining, please avoid use of a gasket that is same materials
with lining material. If the same materials were used, gasket and lining would bond mutually.
CAUTION
(1) 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.
(2) To put the flowmeter temporarily on the floor, place it carefully with something, such as
stopper, to support it so that GF630 and GF632 will not topple over.
next to the upstream (or downstream) flange face and the other gasket next
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