Dakota Ultrasonics VX - Manual (Page 3)

VX Ultrasonic Velocity Gauge
CONTENTS
I NTRODUCTION
O PERATION
T
HE
K
EYPAD
T HE D ISPLAY
T
HE
T
RANSDUCER
M AKING M EASUREMENTS
C ONDITION AND P REPARATION OF S URFACES
P ROBE Z ERO
C ALIBRATION
S CAN M ODE
T RANSDUCER S ELECTION
A
PPENDIX
A: P
RODUCT
S
PECIFICATIONS
A PPENDIX B: A PPLICATION N OTES
A
PPENDIX
C: S
OUND
V
ELOCITIES OF
C
OMMON
M
ATERIALS
W ARRANTY I NFORMATION
1
3
3
6
8
9
11
12
13
17
18
21
23
27
29
DISCLAIMER
Inherent in ultrasonic measurement is the possibility that the instrument
will use the second rather than the first echo from the back surface of the
material being measured. This may result in a reading that is TWICE what
it should be. This typically occurs when the material being measured is
thinner than the minimum capability of the transducer being used.
Responsibility for proper use of the instrument and recognition of this
phenomenon rests solely with the user of the instrument.