Model 4525 Gate Monitor
Operator’s Manual
Ludlum Measurements, Inc.
Page 37
May 2018
another copy of the alarm report to be printed. The Audio Ack button will
silence the audible alert, and the Ack button will acknowledge the alarm and
close the alarm window. The alarm window will also indicate if the gamma or
over-speed alarm is being ignored because of the direction. The alarm window
can be configured to require a password before the alarm can be acknowledged.
The Profile tab displays a graph representing the background readings
during the occupancy. Up to three plots are displayed, 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.
