Endress+Hauser Deltabar PMD55B, Краткое руководство по эксплуатации

Страница: 24 / 28

Commissioning Deltabar PMD55B HART
24 Hauser
Prerequisites:
• Measured variable with square root extraction in relation to pressure
• In the Output current transfer function parameter, set the Square option.
Menu path: Application → Sensor → Sensor configuration → Output current transfer
function
• Enter the switch-on point for the low flow cut off in the Low cutoff parameter (default 5 %)
Menu path:Application → Sensor → Sensor configuration → Low cutoff
6%
5%
0% 0%
Q
Qmax
Q
Qmax
∆ ∆
p p
A0025191
• The hysteresis between the switch-on point and the switch-off point is always 1 % of the
maximum flow value
• If 0 % is entered for the switch-on point, low flow cut off is disabled
In the
Assign PV parameter, the Pressure option must be selected (factory setting)
Menu path: Application → Sensor → Scaled variable → Assign PV
Alternative menu path: Application → HART output
The set unit is also output on the fieldbus.