Endress+Hauser Proline t-mass 65F - Page 31

Device Functions Proline t-mass 65 11 Group PULSE/FREQUENCY OUTPUT
Endress+Hauser 31
OUTPUT SIGNAL
(continued)
In the operating status (flow or temperature present), the output signal level changes
from 0 V to a positive voltage level.
A0001975
Example for output configuration PASSIVE-POSITIVE:
Output configuration with an external pull-down resistance.
In the quiescent state (at zero flow or minimum temperature), a positive voltage level is
measured via the pull-down resistance.
A0004689
m = Open collector
n = Pull-down resistance
o = Transistor activation in POSITIVE quiescent state (at zero flow or minimum tem-
perature)
p = Output signal level in quiescent state (at zero flow or minimum temperature)
In the operating status (flow or temperature present), the output signal level changes
from a positive voltage level to 0 V.
A0001981
Example for output configuration PASSIVE-NEGATIVE:
Output configuration with an external pull-up resistance.
In the quiescent state (at zero flow or minimum temperature), the output signal level at
the terminals is at a positive voltage level.
A0004690
m = Open collector
n = Pull-up resistance
o = Transistor activation in NEGATIVE quiescent state (at zero flow or minimum tem-
perature)
p = Output signal level in quiescent state (at zero flow or minimum temperature)
In the operating status (flow or temperature present), the output signal level changes
from a positive voltage level to 0 V.
A0001981
(continued on next page)
Function description PULSE/FREQUENCY OUTPUT
U (V)
t
U =30VDC
max
op
+
U (V)
t
U (V)
t
m
n
U (V)
t
U =30VDC
max
+
U (V)
t
U (V)
t
o
p
m
n
U (V)
t