Dynasonics D300_301 Series Doppler Ultrasonic Flow Meter - Manual (Page 19)

Rev. 2/00 -3.5- 300/301
F
ig
u
re
2.
3 D3
01
/30
0
O
p
er
ate
d
wit
h
1
2
-2
4 V
d
c P
o
wer
S
u
p
p
ly
02/
02/
2
000
R
110 [
D
A
M
P
]
C
o
nt
ro
l
A
d
ju
s
t R
1
1
0
[D
A
M
P
] to
s
ta
b
iliz
e
fl
o
w
ra
te
and ou
tp
u
t
re
adi
ng
s.
A
d
ju
s
t C
C
W
t
o
i
n
-
cr
e
a
se
t
h
e
r
e
sponse
o
f
th
e
i
n
st
ru
m
e
n
t;
ad
ju
s
t
C
W
t
o
de
cr
e
a
se
r
e
sponse
t
im
e
(
s
m
oot
h
t
h
e
di
sp
la
y
r
e
adi
ngs
and
ou
tput
s)
.
C
T
R
O
u
tp
u
t C
onne
ct
ions
The
C
T
R
out
put
i
s
de
s
igne
d t
o
ope
ra
te
bot
h
el
ec
tr
o
n
ic
a
n
d
el
ec
tr
om
ec
h
a
n
ic
al
t
o
ta
li
z
er
s
.
The
out
pu
t
can
dr
iv
e
l
oads
as
l
o
w
as
90
o
h
m
s
.
C
o
n
tr
o
l R
9
0
[C
T
R
] a
d
ju
s
ts
th
e
s
p
a
n
of
t
h
is
out
put
.
S
w
it
c
h
se
t S
W
1
c
ont
ro
ls
t
h
e
C
T
R
out
put
by
f
a
ct
or
s
o
f X
1
0.
S
e
e
de
ta
ils
in
th
e
m
a
nual
de
scr
ib
in
g
C
T
R
a
d
ju
st
m
e
n
t.
Is
o
lated 4-20m
A
Ou
tpu
t Co
nn
ect
io
n
s
Th
ere are tw
o m
e
th
ods to conn
ect t
h
is
o
u
tp
u
t:
•
T
o
operate th
e 4-20m
A
l
oop from
th
e
sam
e
DC su
pply
operatin
g t
h
e f
lo
w
m
e
ter,
conn
ect j
u
m
per w
ir
es from
+B/12V t
o
4-
20+ an
d from
GND to
I
S
OGND. Con
n
e
ct
th
e 4-20m
A
l
oop
load betw
e
e
n
4-20+ an
d
4-20-.
•
If
t
h
e target’s (ch
a
rt recorder, datal
ogger,
etc.) in
tern
a
l DC po
w
e
r sou
rce
is
u
tiliz
ed
to pow
er th
e 4-20m
A
l
oop, Co
nn
ect th
e
IS
OGND term
in
a
l to th
e target’s groun
d,
th
e target’s +DC ou
tpu
t to 4-20+ term
in
a
l
an
d t
h
e target’s 4-20
m
A
in
p
u
t to t
h
e 4-
20m
A
–
ter
m
in
a
l.
Con
trol
R100 [4m
A
]
is
u
s
ed to adj
u
s
t 4m
A
off-
set an
d R50 [20m
A
] to ad
ju
st 20m
A
span
.
Fl
o
w
Rate Rel
a
y
Co
n
n
e
ct
io
n
s
Th
e D300/D301 i
s
eq
u
ipped
wi
th
a f
low
rate
c
o
nt
ro
l r
e
la
y.
T
h
e
r
e
la
y
is
d
e
s
ig
ne
d
t
o
c
o
nt
ro
l
loads to 250 Vac an
d 10A
.
Th
e re
la
y
activ
a
tes
wh
e
n
th
e f
lo
w
rate
is
l
e
ss th
a
n
t
h
e set poin
t.
A
c
ti
v
a
ti
o
n
i
s
in
d
icated by
D23 [LED]. Th
e re
la
y
setpoin
t i
s
co
n
tro
lled by
adj
u
s
ti
n
g
R70 [A
L
M
]
th
ere
is
al
so a a
larm
del
ay
feat
u
re t
h
at requi
res
th
e a
larm
con
d
it
io
n
to be presen
t for a peri
o
d
of ti
m
e
before rel
a
y
activ
a
ti
o
n
.
Th
e del
a
y
ca
n
be in
creased by
adj
u
stin
g R80 [DEL
A
Y
] CW
.
P
o
w
e
r S
uppl
y J
u
m
p
e
r P
lace
m
e
n
t
1
2
-2
4
V
d
c
D
o
e
s
n
o
t
m
a
tt
e
r
Fus
e
T
h
e f
u
s
e
p
rov
id
es
p
rot
ec
ti
o
n
f
o
r A
C
p
o
w
er
ed
uni
ts
onl
y.
D
C
pow
e
r s
our
ce
s shou
ld
be
conne
ct
e
d
w
it
h
a 0
.25A
cu
rr
e
nt
l
im
it
e
r
[f
use
]
in
t
h
e
pos
it
iv
e
supp
ly
l
ine
.
12-24 Vdc P
o
w
e
r Co
nnect
io
n
s
Connect a D
C
po
w
e
r
so
u
rce c
apab
le
of so
u
rc-
in
g
0.2
A
to t
he term
ina
ls m
a
rk
ed +B/12V a
n
d
GND.
Th
e D
C
po
w
e
r
so
u
rce
will operat
e a
ll
funct
io
n
s of
th
e D30
0
/D301 e
x
cept t
he
is
o-
la
te
d 4-20m
A
o
u
tp
u
t.
See t
he bo
x
de
scr
ib
in
g
Is
o
lated 4-2
0
m
A
O
u
tp
u
t for c
o
nn
ect
io
n
deta
ils
.
0-
1 m
A
O
u
tp
ut
C
onne
ct
io
n
Thi
s
ou
tp
u
t
is
de
si
gne
d
to
d
ri
v
e
l
o
ads
up
to
1500 oh
m
s
. U
s
e
R
6
0
[
1
m
A
] con
tr
o
l t
o
ad
ju
s
t
span. Tr
ansdu
ce
r C
onne
ct
io
n
s
C
onne
ct
t
h
e
f
o
u
r w
ir
e
s
fr
o
m
t
h
e
t
w
o
coax
ia
l
c
a
b
le
s
to
th
e
re
s
p
e
c
ti
v
e
te
rm
in
a
ls
.
W
ire
m
a
rk
er
s
o
n
t
h
e c
o
a
x
ia
l
c
a
bl
es
i
d
en
ti
fy
t
h
e “
R
”
and
th
e
“
T
” pa
ir
. D
o
no
t r
u
n
t
h
e
s
e
cabl
e
s
adj
ace
n
t t
o
A
C
pow
e
r c
abl
e
s
.
R10 [
G
AI
N]
Cont
ro
l
Af
te
r al
l
el
e
c
tr
ic
al
a
nd t
ra
n
s
duce
r conne
ct
ions
hav
e bee
n m
a
de,
t
he G
A
IN
cont
ro
l
is
s
e
t t
o
m
a
tc
h
liqui
d
a
nd pi
pe pa
ra
m
e
te
rs
. To pr
op-
e
rl
y
s
e
t t
he R10 [
G
AI
N]
, t
he p
ipe
m
u
s
t be
f
u
ll
of
a
f
low
ing
liqu
id
. S
ta
rt w
ith
th
e
c
o
n
tro
l fu
lly
CC
W
[
c
ount
e
r cl
ockwi
s
e
].
Adj
u
s
t C
W
unt
il
D21 [
th
e
LED]
j
u
s
t be
gi
ns t
o
f
las
h s
tea
d
ily
.
L
O
W
V
e
lo
c
it
y
F
ilt
e
r
For
m
e
as
ur
ing f
lu
id
v
e
lo
ci
ti
e
s
up t
o
20 FPS [
6
M
PS]
s
e
t t
he t
w
o s
w
itches
a
t S
W
2 t
o
O
P
EN.
If
cont
inuous
f
low r
a
te
w
ill n
o
t e
xc
e
e
d
2
F
P
S
[0
.6
M
P
S
] tu
rn
th
e
tw
o
s
w
itc
h
e
s
O
N
.