Porvair Sciences MiniVap, Instruction Manual

Page: 16 / 30

Issue 5 – J
Setti
To obtain
adjusting
Note:
To set u
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A
T
o
o
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o
Warnin
Setting
The Min
perform
gas flow
Once th
maximu
valve to
clockwis
Once th
to heat
will start
The dia
high gas
sample
without
January 2014
ing Inle
n optimum p
g the System
up the Inlet
Ensure Sys
Adjust supp
The instrum
optimum pe
of 5 bar (75
The gas su
optimum pr
g:
System G
niVap is des
mance a sett
w meter.
he system in
um that can
o give the de
se.
he flow rate
the gas and
t to rise.
meter of the
s flow rates
disturbance
the risk of c
Decreas
Increas
4
et Oper
performance
m Gas Flow
This set
shown o
Due to i
pressur
Operating P
stem Gas Fl
ply system r
ment will ope
erformance
5 psi)
pply system
ressure of 5
Gas pre
pressur
as Flow
signed to wo
ting of 70 L/
nlet pressur
be maintain
esired flow r
exceeds 25
d the tempe
e needles h
s (> 75 L/min
e. This allo
cross conta
se gas flow
se gas flow
rating
e it is neces
w – see follo
tting is carri
on the syste
internal pre
re through in
Pressure, ca
low Meter v
regulator to
erate with o
it is recomm
m should be
bar (75 psi
essure must
re may resu
ork with a g
/min is reco
re is set to 5
ned, adjust
rate by turn
5 L/min the
erature indic
has been op
n) to be use
ws quicker
mination.
Sy
Pressu
ssary to cor
owing sectio
ied out at th
em gas flow
ssure and d
ndividual ne
arry out the
valve is fully
a value of b
operating pre
mended tha
set to the m
i) cannot be
t not exceed
ult in damag
gas flow betw
ommended.
5 bar (75 ps
the system
ning the valv
instrument
cated on the
ptimised to a
ed while min
sample con
ystem gas flo
ure
rrectly set th
on.
he supply re
w meter.
distribution
eedles.
e following s
y closed (tur
between 3 b
essures as
at the regula
maximum s
e achieved o
d 5.3 bar (8
e to the ins
ween 25 an
This is the
si), or the
gas flow
ve counter-
will start
e display
allow
nimising
ncentration
ow valve
he gas supp
egulator and
losses this i
tep:
rn clockwise
bar (45 psi)
low as 2 ba
ator is set to
ustainable p
or maintaine
80 psi). Exc
trument.
nd 100 L/min
value show
ply to the ins
d is not the v
is not the ga
e)
and 5 bar (
ar (30 psi) b
o supply a p
pressure if t
ed.
ceeding this
n. For optim
wn on the sy
strument be
value
as
(75psi).
but for
pressure
the
s
mum
ystem
16
efore