Endress+Hauser Proline Promass Q 300, Manual

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Proline Promass Q 300
10 Hauser
Recommended measuring range
"Flow limit" section →  47
Operable flow range Over 1000 : 1.
Flow rates above the preset full scale value do not override the electronics unit, with the result that
the totalizer values are registered correctly.
Input signal Input and output versions
→  12
External measured values
Various pressure transmitters and temperature measuring devices can be ordered from Endress
+Hauser: see "Accessories" section →  83
It is recommended to read in external measured values to calculate the following measured variables
for gases:
• Mass flow
• Corrected volume flow
HART protocol
The measured values are written from the automation system to the measuring device via the HART
protocol. The pressure transmitter must support the following protocol-specific functions:
• HART protocol
• Burst mode
Current input
The measured values are written from the automation system to the measuring device via the
current input →  10.
Digital communication
The measured values can be written from the automation system to the measuring via:
• FOUNDATION Fieldbus
• PROFIBUS PA
• Modbus RS485
Current input 0/4 to 20 mA
Current input 0/4 to 20 mA (active/passive)
Current span • 4 to 20 mA (active)
• 0/4 to 20 mA (passive)
Resolution 1 µA
Voltage drop Typically: 0.6 to 2 V for 3.6 to 22 mA (passive)
Maximum input voltage ≤ 30 V (passive)
Open-circuit voltage ≤ 28.8 V (active)
Possible input variables • Pressure
• Temperature
• Density
Status input
Maximum input values • DC –3 to 30 V
• If status input is active (ON): R
i
>3 kΩ
Response time Adjustable: 5 to 200 ms