flowplus - new fluid pressure sensor for process control and validation
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Transcript of flowplus - new fluid pressure sensor for process control and validation
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A newdispen
by Peter Introduc
There ar
accuracy
device m
high reli
One met
all other
against t
dispense
Pressure
affect th
obstruct
pressure
These is
under‐fi
substrat
reduced
pharmac
Howeve
restricte
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require t
A drawb
pressure
Most als
surface
is impor
anaerob
begin to
example
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w fluid prensing and
r Swanson, M
ction
re many app
y and repeat
manufacture,
ability dosin
thod to help
r factors bein
time can be
ed.
e monitoring
he material f
tions caused
e or simply th
sues can res
lling, or insu
te. Clearly, th
d end‐produc
ceutical app
er, the limited
ed the ability
tional Pressu
fluid pressur
the insertion
back to this d
e readings an
so incorpora
of the sensin
rtant to dete
bic adhesives
o react when
e, contact wi
will require s
ssure sendosing ap
MA (Cantab),
lications for
tability of the
, pharmaceu
g processes
p verify the d
ng the same,
used to give
g and analysi
low. These in
by contamin
hat the mate
sult in incons
fficient or ex
he conseque
ct integrity/p
lications for
d availability
y to utilise th
ure Sensors
e sensors us
n of an adapt
design is that
nd making cl
te a stainless
ng diaphragm
rmine poten
s, organic com
they come i
th metal ion
pecial treatm
sor for prpplication
, Managing D
precision au
e dispensed
utical formula
up to about
ispensed am
, the pressur
assurance t
s can reveal
nclude the p
nation, clogg
erial reservo
sistent and in
xcessive mat
nces vary ac
performance
example, ris
y of accurate
is approach
sed in this typ
tor into the l
t it can cause
eaning diffic
s steel diaph
m is in consta
ntial incompa
mpounds an
into contact
ns will initiate
ment to prec
ocess cons
Director, INT
utomated flu
amount is cr
ation or pack
100ml/minu
mount of fluid
re is directly
hat the corre
the presenc
presence of u
ging caused b
ir is empty.
naccurate ap
terial (such a
ccording to a
e, poor stand
sks to health
, efficient in‐
in these app
pe of applica
line carrying
e ‘dead space
cult.
hragm or me
ant contact w
atibilities bet
d body fluid
with metal.
e cure, mean
clude the rea
ntrol and v
TERTRONICS
uid dispensin
ritical. These
kaging, semi
ute flow rate
d or liquid is
related to th
ect amount o
e of issues w
unwanted air
by agglomer
pplication lea
as adhesive o
pplication an
ards complia
.
‐line fluid pr
plications.
ation (e.g. flu
the materia
e’ or underc
mbrane (som
with the mat
tween the tw
s such as blo
In the case o
ning that all m
active surface
validation
g, dosing or
e include pro
conductor fa
e and 1,600k
to monitor t
he flow rate.
of liquid or f
which may im
r bubbles in t
ation of fille
ading to, for
or lubricant)
nd industry s
ance and eve
essure sensi
ush‐mounted
l whose flow
uts, potentia
metimes cera
terial being d
wo. Many liq
ood – are eit
of anaerobic
metallic com
e in order to
n in critica
filling where
cedures in m
abrication an
Pa pressure.
the system p
Analysis of p
luid has bee
mpede or oth
the medium
rs, variable f
example, ov
being applie
sector, but in
en, in
ng technolog
d pressure se
w is to be me
ally distorting
amic). Becau
dispensed/do
uids – includ
her damaged
adhesives, f
mponents in t
be usable.
l
e the
medical
nd many
.
pressure;
pressure
n
herwise
,
feed
er‐ or
ed to a
nclude
gy has
ensors)
easured.
g
use the
osed, it
ding
d or
for
the
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flowplus
Market
stable p
designed
This com
(pressur
thin elas
elastom
measuri
fluid cha
provides
fluid cha
pressure
Installat
The new
both sid
install in
s16 Fluid Pres
demands to
rocess reliab
d specifically
mpact, in‐line
re) to the me
stomer diaph
er into smal
ng cell (man
annel within
s both an ine
annel design
e variations o
tion into the
w sensor is of
es, simplifyin
nto existing p
ssure Sensin
overcome th
bility – has le
y for small‐sh
Figure 1 – A
e, piezoresist
easuring cell.
hragm within
l geometry o
ny other pres
the sensor h
ert and impe
has no dead
or make clea
e fluid path
f in‐line desig
ng integratio
production li
ng Technolog
hese issues –
ed to the dev
hot dispensin
A schematic
tive sensor in
. Challenges
n the very na
of the sensor
ssure sensors
has been com
ervious intern
d space or un
aning difficul
gn and utilise
on into many
nes, where s
gy1
– as well as t
velopment of
ng, precision
of the flowp
ncorporates
which were
arrow tolera
r housing, an
s transfer the
mpletely coa
nal seal, and
ndercuts whi
t.
es the indust
y systems. Its
space might
the need to a
f a new kind
dosing, fillin
lus fluid pres
an elastome
overcome in
nce range re
nd connectin
e force via a
ted with a F
transmissio
ich would im
try standard
s compact di
be at a prem
achieve ever
of liquid pre
ng and mete
ssure sensor
er which tran
ncluded the v
equired, integ
g the elastom
n oil or simil
FKM perfluo
n of the inte
mpede mater
Luer lock ty
imensions al
mium.
greater and
essure senso
ring applicat
nsfers the fo
vulcanising o
grating the
mer to the
ar medium).
oroelastomer
ernal pressur
rial flow, cau
ype connectio
so make it e
d more
r
tions.
rce
of the
. The
r, which
e. This
se
on on
asy to
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Fig
Electrica
The sens
standard
integrat
stabilise
control s
Materia
The sens
optimal
which co
range of
can be c
enginee
ure 2 – The s
al output
sor provides
d M8 connec
ed amplifier
ed within the
signal, readil
al compatibil
sor’s flow ch
resistance to
ombined wit
f application
considered fo
ring, for exa
sensor is simp
a standard,
ctor. The mil
, obviating th
e operating te
ly utilised by
lity
hannel is fully
o many aggr
th high temp
s. The FFKM
or use in foo
mple.
ple to integr
calibrated, l
livolt signal g
he need for
emperature
y PLC‐based a
Figure 3 – O
y coated wit
ressive chem
perature resis
formulation
d preparatio
rate into exis
inear 0 ‐ 10V
generated at
an external t
range of 15°
automation o
Output signal
h FFKM (a fu
icals includin
stance make
n used in the
on, biochemi
sting lines wi
V output sign
t the source
transducer o
°C – 45°C. Th
or test & me
l vs. pressure
ully fluorinate
ng hydrocarb
e it sufficient
sensor has F
cal work, ph
ith Luer fittin
nal via an int
is converted
or booster, an
he 0‐10V out
easurement s
e
ed elastome
bons and hig
tly robust to
FDA complia
armaceutica
ngs on both e
egral cable a
d to this signa
nd it is intern
put is a stan
systems.
r). This prov
ghly corrosive
be used in a
ance, and the
als or genetic
ends
and
al by an
nally
dard
ides
e fluids,
wide
erefore
c
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Mainten
The new
achieved
and allo
Applicat
In the la
dynamic
This info
environm
which w
blockage
Connect
instigate
down th
log as pa
nance and Cl
w sensor is m
d by thoroug
wing it to dr
tions
boratory, th
c application
ormation is u
ments where
would disrupt
e building up
Fi
Figu
ted to a PLC
e a warning m
he process, o
art of the qu
leaning
maintenance‐
ghly flushing
ry.
e flowplus w
flow mecha
useful in man
e, for examp
t tight tolera
p in filled flui
igure 4 – Sign
ure 5 – Signa
or other con
message or e
or do so auto
ality assuran
‐free and req
the interior
will deliver pr
anics using th
ny analytical
ple, it can det
nce dispensi
ids, so enabl
nal from an i
al from an ou
ntrol system
error signal w
omatically. Fo
nce.
quires no cali
flow channe
ressure and f
he output an
and lab situa
tect irregular
ing on medic
ing correctiv
in tolerance
ut of toleranc
as part of an
which might
or process va
ibration. Cle
el with a solv
flow informa
nd appropriat
ations, but a
rities caused
cal devices o
ve action to b
dispensing o
ce dispensing
n automated
alert an ope
alidation, the
aning is stra
vent such as
ation, and ca
te software.
also has real
d by air bubb
r visual disp
be taken.
or dosing eve
g or dosing e
process, the
erator to inve
e output sign
ightforward,
isopropyl alc
an analyse st
value in prod
bles in adhesi
lays, or ident
ent
event
e sensor out
estigate or sh
nal can be ke
,
cohol
atic and
duction
ives
tify a
put can
hut
ept in a
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Conclus
The flow
and its s
line desi
fluorinat
many us
new sen
research
industry
When yo
process
Referen
1)
Contact UK & IreINTERTR17 StatioKIDLINGOxfordsOX5 1JDEnglandt 01865 e enquirwww.int
© Peter
ion
wplus pressu
standard out
ign means th
ted elastome
ses, including
nsor has foun
h & developm
y.
ou absolutel
reliability an
ces
® ViscoTec P
eland DistribRONICS on Field InduGTON hire D 842842 [email protected]
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the flowplus
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with new flu
and fluids ac
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armaceutica
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ments,
The in‐
ids. The
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l,
d across
ssurance,
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