Model 4525 Gate Monitor
Operator’s Manual
Ludlum Measurements, Inc.
Page 67
May 2018
The Profile tab displays a graph representing the background readings
during the occupancy. Up to three plots are display, with each plot
representing the sum of the left, right, and top (if available) panels. The
readings are displayed in counts per second (CPS) or in
µ
R/hr. If a valid
speed was calculated for the occupancy, the X-Axis will display the profile
samples in either feet or meters. If no speed was calculated, the X-Axis will
display as 100 ms sample intervals. The front and back of the occupancy is
denoted by two black vertical lines. A vertical red line will indicate the
location of the gamma alarm. The status of the infrared sensors is plotted at
the bottom of the graph as either dark red squares (one infrared sensor
blocked) or bright red (both infrared sensors blocked). If enabled, the
graph will also show the background averages used for the percent alarm
calculation. These are only plotted when both infrared sensors are blocked
and appear as dotted lines.
A movable cursor on the graph allows the user to move to any point on the
graph and display the current X and Y values.