User Manual

Installation and operating instructions BM 70 A/P Page: 23 11/00
6.1.7 Special options for the flange
Antenna heating/cooling device (> DN150/6") Purging device (>
DN100)
Double-walled antenna for cooling or heating, With connection for purging the inside surface
e.g. to avoid condensation (recommended for of the antenna to prevent heavy deposits of
liquid sulphur). product or to heat or cool the antenna.
max. differential pressure at antenna:
Standard DN150
= 6 bar (87 psig) (information on other pressure
levels provided on request)
6.1.8 Ultimate installation on the tank
• After carefull
y
p
ositionin
g
the BM 70 A/P on the
tank fittin
g
flan
g
e
(
not for
g
ettin
g
the
g
asket
)
,
align the BM 70 A/P and the gasket.
• Insert stud bolts and ti
g
hten nuts sli
g
htl
y
(
b
y
hand). (These items not included with supply).
• Press shieldin
g
stri
p
C* in the
g
a
p
between
tank flan
g
e and the BM 70 A/P flan
g
e and
secure with stra
p
retainer S*
(
both items
included with supply).
• Stra
p
retainer S* must fit closel
y
and overla
p
both flanges.
* only required for European radio approvals
• Tighten down stud bolts and nuts firmly. The
torque is dependent on the strength properties
of the stud bolts and the pressure rating of the
tank.
C* = shielding strip B = BM 70 A/P flange
S* = strap retainer F = tank flange
If a liquid is used for purging, this may interfere with the
functioning of the BM 70 A/P during the process.
Continuous purging with gas is not a problem as it does
not interfere with measurements.
The purge connection is closed off by the manufacturers
with a ¼" screw. When this screw is removed to connect
up a purging system, the operator is responsible for
ensuring conformity with "Ex" requirements in
connection with the purging circuit (e.g. fitting a flame
trap).
Hazardous-duty systems:
1. In Zone 0, the temperature of the
heating system and antenna may
not exceed 80 % of the ignition
temperature of the stored material.
2. Continuous monitoring shall
ensure, and operational inspections
shall verify, that the 80% level of
the ignition temperature stated in
Point 1 above is not exceeded.