Endress+Hauser Proline Promag 300, Описание параметров устройства

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Proline Promag 300 Modbus RS485 Description of device parameters
Hauser 123
Pulse width 
Navigation  Expert → Output → PFS output 1 to n → Pulse width (0452–1 to n)
Prerequisite In the Operating mode parameter (→  120), the Pulse option is selected, and one of
the following options is selected in the Assign pulse parameter (→  122):
• Mass flow
• Volume flow
• Correct.vol.flow
Description Use this function to enter the duration of the output pulse.
User entry 0.05 to 2 000 ms
Factory setting 100 ms
Additional information Description
• Define how long a pulse is (duration).
• The maximum pulse rate is defined by f
max
= 1 / (2 × pulse width).
• The interval between two pulses lasts at least as long as the set pulse width.
• The maximum flow is defined by Q
max
= f
max
× pulse value.
• If the flow exceeds these limit values, the measuring device displays the diagnostic
message S443 Pulse output 1 to n .
B = P
B
P
P
B
B < P
t t
U[V] U[V]
A0026882
B Pulse width entered
P Pauses between the individual pulses
Example
• Pulse value: 0.1 g
• Pulse width: 0.1 ms
• f
max
: 1 / (2 × 0.1 ms) = 5 kHz
• Q
max
: 5 kHz × 0.1 g = 0.5 kg/s
Measuring mode 
Navigation  Expert → Output → PFS output 1 to n → Measuring mode (0457–1 to n)
Prerequisite In the Operating mode parameter (→  120) the Pulse option is selected and in the
Assign pulse parameter (→  122) one of the following options is selected:
• Mass flow
• Volume flow
• Correct.vol.flow