Rev B, ECN 12
INTRODU
T
measure c
dynamic r
Lbs full sc
(quasi sta
500 Lbs fu
T
high prelo
dynamic f
negative-g
for tension
M
bottom an
surface an
connector
DESCRIP
R
cross sec
S
connector
top and bo
Figure
M
where rad
drop shoc
instrumen
machinery
around th
exit radial
R
member (
evenly ac
897, 08/18/16
UCTION
he 1051C for
compressive
range, e.g., fr
cale over a ve
atic to 50 kHz.
ull scale in te
hin x-cut qua
oad, provide a
force inputs. T
going for com
n.
Model 1051C f
nd top surface
nd load or im
r.
PTION
Refer to figure
tion of Model
eries 1051C
r and tapped
ottom for stud
e 1: CROSS
Model 1051C i
dial space is n
ck application
nt is also used
y shafts or pu
e machine fo
ly.
Referring to Fi
(called the pla
ross the quar
OP
CH
rce sensor is d
and tensile fo
om 10 Lbs fu
ery wide frequ
.) This sensor
nsion.
rtz crystals he
a charge outp
The output po
mpression and
features tapp
es for attachm
pact cap and
1 below for a
Series 1051C
has a transve
1/4-28 x .175
d mounting.
SECTION, M
is recommend
not limited suc
s and for gen
d to monitor fo
ushrods where
r the electrica
gure 1, the up
aten) distribut
rtz crystals wh
PLA
QUA
CRY
BAS
MOU
SUR
10-3
CON
PERATING IN
HARGE MOD
designed to
orces over a w
ll scale to 500
uency range,
r can measur
eld under ver
put analogous
olarity is
d positive-goin
ed holes at th
ment to test
a radial 10-3
a representati
C force senso
erse mounted
5 deep holes a
MODEL 1051C
ded for use
ch as in some
neral use. This
orces in
e there is spa
al connector t
pper threaded
tes the force
hile sealing th
ATEN
ARTZ
YSTALS
SE
UNTING
RFACE
32
NNECTOR
NSTRUCTIO
DE DYNAMIC
wide
00
re to
ry
s to
ng
he
32
ive
or.
d
at
C
e
s
ace
to
d
he
i
T
s
r
n
i
s
d
T
c
g
f
A
r
F
S
t
c
t
a
d
i
a
a
t
b
NS MODEL 1
C FORCE SEN
instrument ag
The very thin
small portion
results in a ve
natural freque
instrument is
steel of simila
Refer
127-1051C, s
dimensioned
THEORY OF
Force
crystals caus
generated, w
force. A spec
Amplifier beca
read out this c
Figure 2: TH
SCHEMATIC
A cha
the very smal
changing the
the charge m
a low impeda
directly to alm
A cha
input impedan
and with capa
as the gain of
the transfer fu
becomes:
1051C
NSOR
gainst moistur
quartz crysta
of the length
ery high stiffn
ency. The ove
almost comp
ar dimension.
r to the Outlin
supplied with
outline of Mo
OPERATION
e compressin
ing an electro
hich is exactly
cial type of am
ause of its hig
charge. Refe
E CHARGE A
C
arge amplifier
ll signal from
signal. The c
ode signal ge
ance voltage w
most any type
arge amplifier
nce-inverting
acitive feedba
f the amplifier
unction of the
re and other c
als comprise a
of the sensor
ess and high
erall stiffness
parable to a so
ne/Installation
this manual, f
odel 1051C.
N
g the load ce
ostatic charge
y analogous t
mplifier called
gh impedance
r to Figure 2 b
AMPLIFIER,
r has the abili
the force sen
charge amplifi
enerated by th
which may the
of readout in
r is essentially
amplifier with
ack. It can be
r (-A) approac
e charge ampl
2
contaminants
a relatively
r which
rigidity and
of this
olid piece of
n drawing,
for a
ll stresses the
e to be
to the applied
a Charge
e level must
below.
SIMPLIFIED
ty to read out
nsor without
ier converts
he crystals to
en be fed
nstrument.
y a very high
h infinite gain
shown that
ches infinity,
lifier
2
s.
e
d
t