Count Rate (Pulse Rate), Pulse Width Setting Mode And Pulse Width - Toshiba LF516 Instruction Manual

Switch operation
STEP4(=END)

8.2.20 Count Rate (Pulse Rate), Pulse Width Setting Mode and Pulse Width

In this section, the volume per count (pulse) for totalized flow operation and the pulse width for
totalization pulse output can be set.
The totalized flow counts is not affected by the display setting but it is recommended that you set a
volume unit for Display 1 or Display 2 to check its operation.
●The count rate must be set so that the pulse output at 100% output is within the range below:
3.6 to 10800000 pulse/h (0.001 to 3000 pulse/s).
If you try to set a value outside of this range, an error message HIGH OVER SPEC or LOW
OVER SPEC appears and the value returns to the previous value.
● The pulse width must be set to a value within the range of 0.3ms to 500ms.
If you try to set a value exceeding 500 ms, the value will be forcibly changed to 500ms.
● The pulse width must be set to 40% or less of the period of pulse frequency at 100% output.
If you try to set a value exceeding the limit, regardless of the setting above, an error message HIGH
OVER SPEC appears and the value returns to the previous value.
If the pulse width is set to 0, it will be automatically set to 40% of the period of pulse frequency at
100% output. In this case, the pulse width setting mode remains in the Manual mode. If the calculation
result exceeds 100ms, it will be forcibly set to 100ms.
Display example
DI FUNC
CNT ST/SP
SET OK?
ESC
O K
Note: Count rate setting range
Example: In the case the range is 108m
Minimum value (for 10800000 pulse/h):
108(m
Maximum value (for 3.6 pulse/h):
108(m
− 84 −
Description
When you push
to confirm whether the setting is OK or not.
If OK, push
O K
setting, push
N O
Pushing cancels the setting operation
ESC
and exits the setting screen.
N O
3
/h (0.03m
3
/h) / 10800000(pulse/h) = 0.00001m
3
/h) / 3.6(pulse/h) = 30m
6 F 8 A 0 9 3 4
, a message appears
. If you want to redo the
.
3
/s),
3
= 0.01L (liter).
3
.