Spirax Sarco ELM, Инструкция по установке, эксплуатации и обслуживанию, Страница: 57 / 80

IM-P309-02 MI Issue 2 57
15.6.1 Pulse or frequency output
The Pulse or frequency output function allows the operator to define whether pulses per
represent a unit of flow or a frequency between 0 and 1 kHz that represents an analog output
over the measuring range.
After selecting the frequency setting, the maximum frequency of 1 kHz will be generated when
the upper-range value for mass or volume flow is reached (depending on the selected pulse
unit). If the flow rate falls below the low flow volume, the actual frequency is 0 Hz.
After selecting the pulse setting, pulse value and unit the transmitter will determine the number
of pulses per flow volume. When choosing a combination of these settings that cannot be
fulfilled in real time for the upper-range value (e.g. the number of pulses per time unit cannot
be generated due to the pulse width which is too large), the error message "Pulse width too
large" or "Inconsistent parameter" will be displayed.
Press

to display the current setting:
Output of
(Pulses)
According to the description in Section 14.1.3.1 Selection window / make a selection, the
operator can toggle between frequency and pulse output (default setting).
15.6.2 Pulse output unit
This function allows the operator to define the unit to be counted. After selecting the Pulse
output unit function, press

to display the following selection field:
Accumulation of
1.0 l
The current value will be displayed. As mentioned in Section 14.1.3.1 Selection window /
make a selection, the operator can choose between the following units:
Mass units:
kg, t
Volume units:
m³, l, USG, UKG, ft³.
15.6.3 Pulse value
This function allows the operator to define how many pulses will be output per unit counted.
After selecting the Pulse value function, press

to display the current unit:
1 pulse per
(1.0) unit
As mentioned in Section 14.1.3.1 Selection window / make a selection, the operator can
choose between the following pulse values:
Values:
0.001, 0.01, 0.1, 1.0, 10.0, 100.0