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11 Commissioning
11.2 Measurement device functions and default settings
11.2.1 Language
The language for display and menu texts can be changed.
Choose between German, Spanish, French and English in the
relevant "Languages" submenu.
11.2.2 Dosing
A technical solution for overflow protection and an EMER-
●
GENCY STOP switch must be provided on-site. For safety
reasons, both functions must lead to the valve closing.
Important:
▶ If the dosing time = 0, timeout is deactivated.
Manual dosing can be configured via the dosing menu. It is
possible to enter the required "Batch quantity" and a "Dosing
time" for this. The dosing time is intended as a safeguard to
prevent unintentional overfilling, but can also be deactivated
when the value "Zero" is entered. "Start" and "Stop" of a dosing
can also be carried out via the menu.
"Batch quantity" setting range: 0–3500 litres, in 0.001 litre
"Batch quantity" factory set-
ting:
"Dosing time" setting range:
"Dosing time" factory setting: 3 seconds
Example:
Dosing time = 3 seconds. This means that the product issues
the closing signal to the valve after 2.1 to 3.0 sec. The dosing
time is meant as a fail safe function. Precise dosing using just
dosing time is not advisable.
11.2.3 Media
11.2.3.1 1-point correction
Setting range: -50.0 to 50.0% in steps of 0.1%
Factory setting: 0%
GEMÜ 3040
WARNING
NOTICE
steps
0 litres
0–3000 seconds, in 1 sec
steps with an accuracy of +0
-1.
11.2.3.2 Leak flow volume
Leak flow volume suppression serves to exclude flows from
the measurement which can be created by convection within
a narrow scope around zero even with the valve closed. Leak
flow suppression is set at the factory to an advisable stand-
ard value in relation to the cross-section of the measurement
device.
There are greater tolerances under the error of measurement
below the factory setting. (see "Mechanical data", page 9)
Leak flow volume suppression operates with a hysteresis of –
25%.
Flow [l/min]
1.2
1.05
0.9
0.75
0.6
-25 %
0.45
0.3
0.15
0
Pulse/
Active
current output
Fig. 10: Function of the leak flow volume suppression, using 0.6
l/min as an example
Example: Leak flow volume suppression = 0.6 l/min
If the flow falls below a value of 0.45 l/min, the pulse output/
analogue output becomes inactive. When 0.6 l/min is ex-
ceeded, the flow rate is output as a pulse again and is added
to the daily quantity counter. A value is also output at the ana-
logue output again.
Setting range: 0.0 to 36.0 l/min, in steps of 0.006 l/min
Factory setting:
–
0.3 l/min for DN10
–
0.9 l/min for DN15
–
3.5 l/min for DN20
–
5.0 l/min for DN25
–
9.0 l/min for DN32
–
18.0 l/min for DN40
–
36.0 l/min for DN50
20 / 34
1 Switch-on point of leak flow volume suppression
2 Switch-off point of leak flow volume suppression
2
2
1
1
Inactive
Active
Inactive
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