9
UK
4.6 Volumetric flow or temperature monitoring / analogue
function
•
Analogue start point [ASP] determines at which measured value the output
signal is 4 mA�
•
Analogue end point [AEP] determines at which measured value the output
signal is 20 mA�
Minimum distance between [ASP] and [AEP] = 25 % of the final value of the
measuring range�
Example of volumetric flow monitoring:
Factory setting
Measuring range scaled
I [mA]
20
4
0
MEW
Q
I [mA]
20
4
0
MEW
AEP
ASP
Q
MEW = final value of the measuring range
In the set measuring range the output signal is between 4 mA and 20 mA�
It is also indicated:
Volumetric flow above the measuring range: output signal > 20 mA�
4.7 Adjustment to the internal pipe width
The unit can be used for different internal pipe widths� The selected internal pipe
width must be set via the menu (→ 9.2.1 Adjustment to the internal pipe width).
Set the internal pipe widths before defining values for switching limits (SPx,
rPx) and analogue limit values (ASP, AEP)�
4.8 Set standard conditions of the volume flow
The unit is adjusted to a standard volume flow to DIN ISO 2533, i�e� volume flow
at 1013 hPa, 15 °C and 0 % relative air humidity�
