GOK GWS 904 Instructions De Montage Et De D'utilisation page 37

Table 12: Flat-bottom tank structures according to DIN 4419, EN 1993-4-2, EN 14015
• for above-ground storage
• Measure shell height H
• Calculate the response height L
maximum admissible filling volume of 95% (V/V)
L = H x 0.95
1
• Measure the perpendicular clearance auxiliary
measure k
k = clearance upper edge dome cover
GWG installation nozzle – upper edge tank shell.
• Calculate the adjusting dimension X according to
Figure 13
INSTALLATION TO THE TANK
Assembly insert
After having DETERMINED THE ADJUSTING DIMENSION X, the insert must be locked.
Insert G 1
• Connecting threads present on the tank larger than G1 can be brought to the connecting
thread G1 of the insert by using commercially available reducers. Due to the partial increase
of the fitting edge, the following is applicable: X = a + k + k
The following must be observed when installing the limit indicator in potentially
explosive areas
• Installation for the respective EX protection zone is admissible if the inflammable category 1
to 3 liquids belong to the temperature classes T1 to T4 according to EN 60079-0.
Group II device, category 1 and 2 G (gas) according to EN 60079-26.
• The temperature of the potentially explosive atmosphere may not exceed or fall below the
range of -20°C to +60°C.
• The pressure of the potentially explosive atmosphere may not exceed or fall below the
range of 0.8bar to 1.1bar (absolute).
• The inflammable category 1 to 3 liquids may not have any chemical or corrosive effects.
• The tightness of the sensor within the probe tube may not be jeopardised.
Part No. 15 382 65
Limit indicator GWG - type GWS -issue 2
, corresponding to the
1
• Loosen the adjusting screw
• Set the determined adjusting dimension X.
• Tighten the adjusting screw
cannot be moved.
• The cutting ring
with 1bar positive pressure can be performed on the tank and
leak indicators on vacuum-base with -0.33bar negative
pressure can be used.
• Ultimately, the adjusting dimension must be re-checked.
• Screw-in to the tank using sealing tape (PTFE tape).
on the insert.
so that the probe tube
in the insert ensures that pressure tests
.
Reducer
Figure 13
 B = H + k
 X = B – L
1
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