E-122-8-E
11
(3) Instantaneous flowrate
When the CPU accepts count (Parameter A) of pulses sampled within sampling time (Parameter At )
[sec], its period or the interval of occurrence T [sec] is measured. The instantaneous flowrate is then
determined by the following equations:
Hourly flowrate b1=3600
×
F
×
H
×
A / T
Per-mimute flowrate b2= 60
×
F
×
H
×
A / T
1.b1 shows a reading down to the decimal places set at "Parameter bP" menu.
2.b2 shows a reading down to the decimal places of b1 + 2 addditional places.
3.In the absence of any incoming pulses within sampling time At [sec], the instantaneous
flowrate reads "0".
4.If the instantaneous flowrate exceeds 99999, the reading remains at "99999".
7.4 Jumper, Switch, Potentiometer Setup and Adjustment
◎
The counter is configured to customer specifications at the factory and no further adjustment
is required except for later changes or adjustment.
Alteration and adjustment above requires removal of internal electronics.
7.4.1 Construction of Internal Electronics Assembly
In the pulse type, the internal assembly consists of a display board and a power supply board. The
analog type (option) has three boards with an additional F/I board. The power supply board and F/I board
connect to the display board. At the back, a terminal block for external connections is found. See "How to
Remove Internal Electronics Assembly" outlined on the next page.
7.4.2 How to Remove Internal Electronics Assembly
Do not fail to turn off power before removal.
Remove wiring connections with this assembly.
①
Remove panel mounting fitting and
draw the assembly out from the
panel rear panel opening.
②
Taking off rear panel fitting screws,
remove the rear panel.
③
Extract the internal electronics
assembly to the rear.
Panel Mounting Fitting
Rear Panel
Internal Electronics Assembly
Fig.7.5
Fig.7.4
Fig.7.3
Fig.7.2
F/I Baord (option)
Display Board
Power Supply Board
Terminal Blocks
