7
Operating instructions for KME flow meter for compressed air and gases
2.1.1 Changing the pipe diameter
Upon delivery, the factory setting of the transmitter corresponds to the pipe diameter as ordered. The set-
ting must match the gauge mounting block. For use use with a gauge mounting block of different diameter,
the transmitter setting shall be correspondingly changed, otherwise it would lead to relevant measurement
errors.
Fig. 1
Pipe diameter on gauge mounting block
Pipe diameter
label
The pipe diameter setting of the transmitter can be viewed on the status page of the optional
display and can be changed using the “Pipe diameter” menu, see § 5, page 17.
Alternatively, the pipe diameter setting can be viewed and changed using the Product Configura
-
tor Software.
2.2 Functions
2.2.1 Analogue output (OUt 1)
The analogue current output (factory setting 4...20 mA or 0...20 mA) is used for the actual flow or
temperature measured values. The analogue output is freely configurable and scalable via the
display menu or the Product Configurator Software.
The analogue output features an error message function according to NAMUR NE43. In the event of a
faulty sensing head, the output signal will freeze at 21 mA.
2.2.2 Switch (alarm) outputs (OUt 1 and OUt 2)
The switch outputs can be set via the display menu or the Product Configurator Software. One
can select between “hysteresis mode” or “window mode” as well as between normally closed
(NC) or normally open (NO) contact.
NC (normally
closed contact)
NO (normally open
contact)
Switch point
Hysteresis
t
Nm³/h
0
1
0
1
Fig. 2
Hysteresis mode
NC (normally
closed contact)
NO (normally open
contact)
Switch point 2
Hysteresis 2
Hysteresis 1
Switch point 1
t
Nm3/h
0
1
0
1
Fig. 3
Window mode
