Monarch Instrument DC6000 - Manual (Page 56)

Section 5 – Recorder Setup
I.
Page 48
1/06/2012 REV 1.10.2
Figure 5-12 Frequency Setup
Reset Print: When this box is checked each time the total is reset, the information will be
appended to the alarm/event log (time and total).
Flow Rate /: The Flow Rate will be displayed per second, minute, hour or day
depending what is selected in this drop down menu.
Cut Off Level: This is the low and high flow cut off levels. If the input value of the
base point is less than or equal to the low value or greater than or equal to the high
value, it will not be totaled. This prevents erroneous totalizing in the event of sensor
failure.
Base Point: This is the actual source for the totalization. The channel selected
from the drop down menu should be set up for the correct input and in the correct
units.
Total Reset on Alarm – If checked the Total will be reset by the Alarm
condition selected. In this case when Channel 1 Alarm 1 is active, the
Total will be reset.
5.1.3.8 Frequency/Pulse Count
Channels 1, 6, 7 and 12 can be used to measure
frequency. Frequency is applied to a separate
isolated input. Inputs are TTL compatible and can
take signals up to 12 volts. There are two options for
frequency that can be selected: Frequency
– which
measure actual frequency in Hz and may be scaled
accordingly. Pulse Count
– which counts pulse
transitions on the inputs and may be scaled
accordingly. In addition alarm and reset features can
be applied.
5.1.3.8.1 Frequency
Select Frequency from the setup menu. The Input
High and Low and Output High and Low can be
used to scale the frequency. For example: to have
the readings be in revolutions per minute (RPM) set
the input to 0 and 1000 for low and high respectively
and the output to 0 and 60000.
Neg. Edge Trigger: Checking this box will cause
frequency to be measured on the Negative Edge of
the input waveform as opposed to the default
positive edge.
Filter: The filter is applied to the inputs when the
Enable check box is checked. The filter performs a
running average of n samples, where n is the
numeric value set in the AVG box from 1 to 100.
Calculator: This will bring up a calculator
that allows computations to calculate the
scaling factors.
Apply: Save the values and exit Cancel: Exit without making any changes
Figure 5-11 Frequency Select