16
Operation
HP289
3.3
Calculation of Rate and Total
3.3.1
Frequency Input
The flowrate, R, is calculated as follows:
where
f
is the input frequency in Hz.
H
is the timebase of rate and is 1 for seconds, 60 for
minutes,3600 for hours, and 86,400 for days.
S
is the Scaling Factor.
The Scaling Factor,
S
, is equal to the K-factor of the flowmeter
expressed in pulses per unit volume.
The user sets the Scaling Factor and selects the timebase during the
configuration process as detailed in Section 5 of this manual.
S
fxH
R
=
Содержание 214D-1
Страница 2: ...HP289...
Страница 6: ...HP289...
Страница 10: ...Introduction HP289 2B This page intentionally left blank...
Страница 32: ...24 Options HP289 Figure 2 RS485 Interface...
Страница 46: ...38 Input Circuits HP289 The Frequency Input Circuit...
Страница 47: ...Input Circuits 39 HP289 1 MAG Coil 2 Redi Pulse CMOS or Pulse 3 Redi Pulse Open Collector...
Страница 48: ...40 Input Circuits HP289 4 Squarewave CMOS or Pulse 5 Open Collector 6 Reed Switch...