User Manual

56
For these functions the output sends out a series of pulses where each pulse represents a fixed
mass or volume. So, for example, to set the converter for 1 pulse equal to 20g, proceed as
follows :
Begin from measuring mode
Menu Fct. 3.4.3 can now be used to set the minimum pulse width, τ , in the range 0.4 to
500 ms.
τ
τ
In this way the operator can be sure that the pulses produced by the impulse output will never
be shorter than the specified width.
When setting the pulse width, τ, and the mass (or volume) per pulse, Q, the operator
should take into account the maximum flow rate,
Flow
max
, he expects through the meter,
such that:
Flow
max
<
Q
2τ
where:
Flow
max
is in units g/s (or cm
3
/s)
Q
is in units of g (or cm
3
)
τ is in units of seconds
If
Flow
max
exceeds the above, limit saturation will occur and pulses will be lost and any external
counter connected will under-read. It is possible to generate warnings of saturation in one of
two ways:
Key Display
line 1 line 2
→↑↑ Fct. (3).0. INSTALL.
→↑↑↑ Fct. 3.(4).0. PULS.OUTP. P
→ Fct. 3.4.(1). FUNCTION P
→ (OFF)
↑ (MASS FLOW)
: (TOTAL MASS)
: (DENSITY)
: (TEMPERAT)
:(VOLUME.FLOW)
: (VOL. TOTAL)
↑ (DIRECTION)
↵ Fct. 3.4.(1). FUNCTION P
↑ Fct. 3.4.(2). PULSE/MASS
→ 1.000 1 P. = (KG)
Current setting 1kg per pulse
4x↑ 1.000 1 P. = (g)
→ (0)1.000 1 P. = g
↑↑ (2)1.000 1 P. = g
→9x↑ 2(0).000 1 P. = g
↵ Fct. 3.4.(2). PULSE/MASS