Version 1.05 01/23/2018
Omega X3: USER GUIDE
Diamond Traffic Products, Inc.
Copyright © 1991-2019 All Rights Reserved
Page 7
1.b.1 Connecting Road Tubes
As the Omega X3 records a timestamp for each axle strike, it is highly important that the tubes be of similar
overall length. This will provide an equal distance for the sound/pressure wave to travel inside of the tube.
Having different lengths will cause the sound to travel a different distance and will skew the recorded data. A
vehicle
’s
recorded speed and or length can be affected when using tubes of a different overall length.
For Per Vehicle type data:
Use 2 tubes of equal length for sites with an expected ADT of less than 4500, use 4 tubes for those sites that
are expected to have an ADT higher than 4500, deploying the tubes in a short, long, short, long configuration.
2 tubes
•
Install one road tube perpendicular to the direction of traffic across both lanes of traffic, one if
you only want to collect data on a single lane.
•
Install a second tube 4 feet from the first tube. (We do NOT recommend spacing closer than 4
feet when classifying due to potential loss of accuracy). Connect the road tube, which will be
struck fi
rst by oncoming traffic (near lane) into the ‘A’ port.
•
Connect the other road tube, which will be hi
t second by oncoming traffic into the ‘B’ port.
4 tubes
•
Install one road tube perpendicular to the direction of traffic across a single lane of traffic (short
tube).
•
Install a second tube 1 foot away from the first, crossing both lanes of traffic (long).
•
Install a third tube 3 feet away from the second, crossing only one lane of traffic (short).
•
Install a fourth tube 1 foot away from the third, crossing both lanes of traffic (long).
Tube connection is vitally important with this setup and will be dependent on vehicle traffic in
reference to the lane nearest the counter location.
If Opposite direction
The first tube (short) will be plugged into port ‘A’
T
he second tube (long) will be plugged into port ‘D’
The third tube (short) will be plugged int
o port ‘B’
The fou
rth tube (long) will be plugged into port ‘C’
If Same direction
The first tube (short) will be plugged into port ‘A’
The second tube (long) wi
ll be plugged into port ‘C’
The t
hird tube (short) will be plugged into port ‘B’
The fourth tu
be (long) will be plugged into port ‘D’
