paint and bead materials on top of each other at different vehicle speeds.
Gun Delays
Paint Gun Delays
correct the mechanical response delay of the gun. Most
material applicators experience a time delay between the time the electrical
signal is applied from the skip timer, until the gun actually opens and
material can flow.
Most applicators take longer to turn off (pushing against high pressure)
than to turn on (pushing with high pressure). This causes a 10.0' stripe, for
example, to be longer, i.e. 10.5' to 11.0'.
Gun delays account for this delay with TIME. With the gun offsets already
set correctly, adjust the gun delays to correct the line length:
➢
If the stripes on the road are too long, use a negative Off Delay
➢
If the stripes on the road are too short, use a negative On Delay
IMPORTANT
: Do not correct distance factors (where the material falls)
with time (on and off delays), or time (how long it takes material to hit the
ground) with distance factors (offsets). The system will not correctly
respond to variations in speed.
If the desired line length is ten feet, then in the above example the line marked 1 is
SC-12 Road Marking Control System - Installation and Operation Manual
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