Endress+Hauser Cerabar M PMC41 - Dead Time, Time Constant (T63); Dynamic Behavior 4; Dynamic Behavior Current Output (HART Electronic); Dynamic Behavior Digital Output (HART Electronic)

Cerabar M
16 Endress+Hauser
Dead time, time constant
(T63)
P01-xxxxxxxx-05-xx-xx-xx-007
Illustration of dead time and time constant
Dynamic behavior 4...20 mA
(Analog electronic)
Dead time, time constant (T63)
Dynamic behavior
current output
(HART electronic)
Dynamic behavior
digital output
(HART electronic)
Dead time, time constant (T63)
For HART communication, the dead time consists of the internal dead time of the device and the update rate
on the bus:
Reading cycle
HART commands: on average 3 to 4 per second on average.
Update rate
On average 250 to 330 ms.
I
63 %
100 %
t
t
1
t
2
90 %
T90
Types Dead time t
1
Time constant (T63), t
2
Step response time (T90)
all --- 40 ms 80 ms
PMP46/PMP48 additional influence from the diaphragm seal
Types Dead time t
1
Time constant (T63), t
2
all 290 ms 240 ms
PMP46/PMP48 additional influence from the diaphragm seal
Types Dead time t
1
Time constant (T63), t
2
all 540 ms 240 ms
PMP46/PMP48 additional influence from the diaphragm seal