Output - Endress+Hauser HART Proline Prosonic Flow B 200 Operating Instructions Manual

Technical data
Operable flow range
Input signal
Output signal
Signal on alarm
Load
Low flow cut off
Galvanic isolation
96
Recommended measuring range
"Flow limit" section (® ä 99)
30 : 1. Flow rates above the preset full scale value do not overload the amplifier so the totalized
values are registered correctly.
To increase the accuracy of certain measured variables, a measured pressure value can be used
instead of a fixed operating pressure. For this purpose, the measuring device continuously reads in
the operating pressure from a pressure transmitter (e.g. Cerabar M or Cerabar S) via the HART
protocol.
The pressure transmitter must support the following protocol-specific functions:
• HART protocol
• Burst mode
• Various pressure transmitters can be ordered from Endress+Hauser: see "Accessories" section
• Please comply with the special mounting instructions if using pressure transmitters
External pressure compensation is recommended to calculate the following measured variables:
• Corrected volume flow
• Corrected methane volume flow
17.4

Output

2-wire
• Current output 1: 4-20 mA HART, passive
• Current output 2: 4-20 mA, passive
• Lower-range value, full scale value and time constant (0.07 to 999 s) can be set
Depending on the interface, failure information is displayed as follows:
• Current output
– Failsafe mode selectable (in accordance with NAMUR Recommendation NE 43):
Minimum alarm: 3.6 mA
Maximum alarm (= factory setting): 22 mA
– Failsafe mode with user-selectable value: 3.59 to 22.5 mA
• Local display
– Status signal (in accordance with NAMUR Recommendation NE 107)
– Plain text display
• Operating tool via digital communication
– Status signal (in accordance with NAMUR Recommendation NE 107)
– Plain text display
• Operating tool via service interface
– Status signal (in accordance with NAMUR Recommendation NE 107)
– Plain text display
(® ä 21)
The switch points for low flow cut off are user-selectable.
All circuits for the outputs are galvanically isolated from each other.
Proline Prosonic Flow B 200 HART
Endress+Hauser