Brodie BERT-E, Инструкция по установке и эксплуатации

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Gate Function (
GATE
)
The gate function is used for displaying slow pulse rates. Using the programmable gate, the meter is able
to display pulse rates as slow as 1 pulse every 9,999 seconds (0.0001 Hz). The gate function can also be
used to obtain a steady display reading with a fluctuating input signal.
There are two settings for the
Gate
, low gate (
LO
) and high gate (
HI
).
Low Gate (
LO GaTe
)
For most applications, low gate setting should be left at 1 second. Increase low gate setting to obtain a
steadier rate display. The rate display will update in accordance with the low gate setting, for example if
low gate is set at 10, the display will update every 10 seconds; changes in rate between updates will not
be reflected until next display update.
High Gate (
HI GaTE
)
Set the high gate value to correspond to the highest expected pulse period (lowest pulse rate). For
instance if the meter must display a rate when there is 1 pulse coming into the meter every 10 seconds,
set the high gate to 11 seconds. When the signal is removed from the meter, the display will show the last
reading for 11 seconds; then it will read zero.
Contact Debounce Filter (
FILTER
)
The filter function (
FILTER
) can be used for applications where the meter is set up to count pulses
generated by switch contacts. There are three settings,
HI
(high speed),
nmed
(medium speed), and
LO
(low speed). High speed disables the contact debounce filter and allows any pulse of the minimum
specified width for the selected input type. Press ENTER when
nmeD
or
LO
is displayed to enable the
filter function.
The medium filter ignored signals faster than 250 Hz max, or pulse widths less than 2 ms at 50% duty
cycle. The low filter ignores signals higher than 100 Hz, or pulse widths less than 5 ms at 50% duty cycle.
Low-Flow Cutoff (
CUTOFF
)
The low-flow cutoff feature allows the meter to be programmed so that the often-unsteady output from a
transmitter at low flow rates, always displays zero on the meter.
The cutoff value may be programmed from 0 to 9999.9. Below the cutoff value, the meter will display
zero. Programming the cutoff value to zero disables the cutoff feature.
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