Limit Indicator Replacement (Older Tanks) - GOK GWG Serie Manual Del Usuario

Table 7: Example for calculating the adjusting dimension X
Length = 1010mm
Rated volume of the tank = 1000L
305mm
1. Q pursuant to DIN 4755 and DWA-A 791
max
2. Total time t
pursuant to EN 13616
ges
3. Overrun volumeV
V
= 1200L/min; (5.5s • min / 60s)
1
V
for D = 55mm and L
2 i
V = V + V = 110L + 35L
4 1 2
4. Response height L
V = 95% (V/V) of 1000L
3
V = V - V = 950 - 145
5 3 4
a) Look up volume V
b) Approach: L
1
1000L ≡ 1000mm at 100% (V/V),
c) from a) or b): L
d) Adjusting dimension GWG
X = H - L - b + k
1
e) Control dimension GWG Y = Z - X

LIMIT INDICATOR REPLACEMENT (OLDER TANKS)

From DIBt information issue 1/2008
When replacing limit indicators on tanks with test certificates or general approvals of the
building inspectorate, the following limit indicator with the certificate of suitability for intended
use of the building inspectorate may be installed:
• limit indicators fitting into the designated connection on the tank,
• limit indicators having such a length allowing for the hitherto adjusting dimension to be re-
configurable and for reading off the related control dimension.
Part no. 15 382 56 b
Width = 1010mm
3
= 15m
FL
and adjusting dimension X
1
in calibration chart and find the level L
5
+ a - b = H - (2 • b)
= 805mm
1
= 1010 - 805 - 5 + 30
Limit indikator GWG type GWD
Height H = 1010mm
Bushing with k = 30mm
= 1000mm
805L ≡ L
[mm]
1
= 305 - 230
b = 5mm,
GWG with Z =
1200L/min
5.5s
110L
145L
950L
805L
_ _ _ _ mm
1
230mm
75mm
35L
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