User's Manual

WWW.WARSENSOR.COM
WARSENSOR WSF User Manual
Revision 1 printed 8/16/2005
Mail: [e-mail]
14
Section 4
-Adjusting Velocity
-Checking FPS
CHRONOGRAPHING
INTRODUCTION
This not only addresses some of the questions about chronographs and their proper use, but also to inform players
how "less than ethical players" purposely circumvent safety rules. I realize that it may give people "ideas" on how to
cheat, but if everyone knows about these nasty techniques, maybe more people will pick up on them.
A CHRONOGRAPH
A chronograph is a device which is designed to measure the velocity of a moving object. The first type of
chronographs were the "sensor type". The chronograph had two light-sensitive sensors which marked the passing of
a projectile as a change in light levels. The computer chip in the chronograph uses the simple Velocity- Equals-
Distance-Divided-By-Time equation, to determine the speed of the paintball. The first chronographs probably
wouldn't fit in an average size garage and tipped the scales at a couple of tons. They were designed to aid in the
research and development of firearms and ammunition.
The second type of chronograph is the "radar type". A radar chronograph uses "Doppler effect" radar which detects,
and measures the speed of, a moving object. It's the same technology used for police "speed guns" and military
target tracking systems.
THE IMPORTANCE OF CHRONOGRAPHING
Paintball goggles are stress tested to absorb an impact of around 320 fps. Velocities over 300 fps tend to break skin
and cause severe bruising. Higher velocity paintballs have been known to cause concussions (when impacting on
the temple). We don't want people to get hurt, so the limit was set at 300 fps.
You can't "guess" a paintball's velocity by the sound of the Warsensor Field Marker. (Although more experienced
payers have been known to approximate velocities for the sounds of paintmarkers familiar to them--this doesn't
replace chronographing). You can't tell its velocity by the size of the splat it makes. The chronograph, when used
properly, is the safest, most accurate way to determine the Warsensor Field Marker's velocity.
NOTE: Warsensor Field Marker which are at velocities of over 300 fps are said to be "hot" or "shooting hot".
THE PROPER WAY TO CHRONOGRAPH
1.Sensor Type - The ideal position is as follows. -The end of the barrel should be at least one foot away from the
front of the chronograph and at least six inches above it. -The barrel should be parallel to the plane of the sensors.
2.Radar Type - Rest the end of the barrel on the mount provided. There should be a clear space of at least five feet