Function group
CURRENT OUTPUT
DUAL RANGE
MODE
For specific applications the scaling of a second end value is useful or
possibly required, e.g. for a higher resolution of the measuring signal with very
small flow velocities.
By activating the dual range mode, the system automatically changes between
full scale value 1 and 2 during normal measuring operation. Full scale value 1
and 2 are freely selectable.
Note!
• The appropriate configuration enables the actual full scale value to be
supplied or signalled via both relays (see following Figure and page 61).
In this case the following applies:
– Full scale value 1 active → Relay 1 or 2 energised (live)
– Full scale value 2 active → Relay 1 or 2 de-energised (dead)
• If the Promag 33 measuring electronics are fitted with a communication
module “RS 485”, then the full scale values 1/2 can also be activated using
the auxiliary input (see page 69).
6
OFF
–ON
Example (0...20 mA; Full scale 1 < Full scale 2)
bab
aba
a → Relay energised
b → Relay de-energised
ba009y37
F1 < F2
F1 > F2
smaller larger
full scale full scale
Note!
6 Description of Functions Promag 33
50 Endress+Hauser
To Next Page
Loading...
