YOKOGAWA 3142 User manual
·-
1E C
t··O·J\C..iP,.-"-l4i)
(._oP'-f
INSTRUCTIONS
INSTRUCTION
MANUAL
FOR
AC-DC
CONVERTER
TYPE
3 I
42
Edit.
4-
YEW
INSTRUCTION
MANUAL
FOR
AC-DC
CONYER
TER
TYPE
3142
Edit.
4-
s::::
4-
I 'f7S. Z
-~
-~
3 ;no. 6
:::.
llJ
z
1965.
12
Dl::
1 J
'165.
6
Edit.
Paqe
Date
I
YOKOGAWA
ELECTRIC
WORKS.
LTD.
r
YEW
-
CONTENTS
-
Page
l .
GENERAL
DESCRIPTION
. . . . . . • . • . . . . • . . . . . . • . . . . . . . . l
2.
FEATURES
I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 1 I 1 1 1 l
3.
SPECIFICATIONS
.........
I
•••••••••••••••••••••
I • • • • 1
4.
METHOD
OF
OPERATION
. • . . • • • • • . . . . • . . . . . . . . . • . . . . 3
5.
OPERATIONAL
FUNCTION
I I I I I I I I I I I I I I I I I 1 I 1 I 1 1 1 1 1 4
6.
EXPLANATION
OF
CONSTRUCTION
AND
OPERATION
• . . 5
7.
ADJUSTMENT
...
I
••••
I
•••••••
'
•••••••••••••
I
••
I
••••
I 6
8.
SELECTION
OF
GALVANOMETER
AND
RECORDING
SENSITIVITY
...............
I
•••••••••••••••
I • • • • • • • • 7
9.
CAUTIONS
FOR
USE
. . . • • . . . • • • . . . . . . . . . • . • • • . . . . • . . . 8
CIRCUIT
DIAGRAM
AND
LIST
OF
PARTS
YOKOGAWA
ELECTRIC
WORKS,
LTD.
YEW
P,
1 .
GENERAL
DESCRIPTION
This
equipment
is
manufactured
as
auxiliary
equipment
for
the
Photocorder
(namely
YEW
Electromagnetic
Oscillograph),
This
AC-DC
Converter
uses
the
G-l?OB
GALVANOMETER
to
convert
AC
voltage
to
DC
current
and
record
on
the
electro-
magnetic
oscillograph.
This
equipment
converts
sine
wave
voltages
of
frequency
30
Hz
to
1
20
kHz
to
1. 5
rnA
direct
current.
According
to
the
current
sensitivity
of
the
galvanometer,
with
the
use
of
the
Type
G-l?OA
galvanometer,
recording
of
about
200
mm
is
possible,
This
equipment
is
also
de
signed
to
extract
1Om
V
output
by
using
a
slide
switch
as
an
accessory
to
the
X-
Y
recorder,
In
addition,
there
is
another
AC-DC
Converter
(Type
3147)
in
our
product
line,
of
the
peak
value
rectifying
type,
with
excellent
linearity
and
frequency
characteristics,
2,
FEATURES
The
features
of
this
equipment
are
as
follows:
1)
The
rectifying
type
is
half-wave
rectification,
By
using
a
negative
feedback
amplification,
excellent
linearity
is
obtained.
2)
The
operation
of
this
equipment
is
very
stable,
since
it
is
entirely
transistorized.
3)
It
can
serve
as
an
accessory
to
a
servo-recorder
as
well
as
electromagnetic
oscillograph.
4)
It
can
measure
up
to
a
maximum
of
250V
I
20cm,
since
a
correcting
attenuator
is
provided
in
the
input
circuit,
I
3.
SPECIFICATIONS
Rectifying
type:
Half-wave
rectification
Voltage
scale
range:
10,
25,
50,
100,
250
m
VI
em
0,5,
1,
2,5,
5,
10
and
20
V/cm
m 11
ranges
I
Frequency
characteristics
of
amplitude:
I
b=
__
jYOKOGAWA
Within
±1
o/o
of
output
full
to
20kHz
scale
at
30
Hz
ELECTRIC
WORKS,
LTD.
-~::!--~_-j:r
______
······-····~-----=~~--Lr=_P--._
~2
----~--
Maximum
output
DC
current
and
voltage:
l.
5mA
(maximum),
when
using
(GALVANOMETER)
side.
lOmV
(maximum),
when
using
(XY
RECORDER)
side.
Linearity:
Within
±l%
(at
30
Hz
to
20
kHz
of
full
scale
Accuracy
of
amplitude:
±l%
(at
20°C
±5o
C)
Impedance:
Input
impedance;
Input
capacity;
Output
impedance;
Approximately
l
00
kn
Less
than
50
pF
Approximately
l kr2,
when
using
(GALVANOMETER)
side.
Approximately
lOOn,
when
using
(XY
RECORDER)
side.
Response:
In
the
even
of
-recording
on
an
direct-
recording
electromagnetic
oscillograph,
rise
time
for
90%
is
0.
5
sec,
Influence
of
power
fluctuation
on
output:
Within
±0.
5%
within
respect
to
power
fluctuation
of
lOOV
±10%,
Ambient
temperature
range:
Noise:
Meter:
Power
supply:
Power
consumption:
Transistor:
Within
P-P
SOf-LV
of
the
output
when
the
input
circuit
is
short
circuitted,
By
selection,
outputs
of
1,
5mA
and
l OmV
can
be
read
from
the
DC
lOOf-LA
ammeter
100
VAC
±lOY,
50
Hz,
60Hz
Approximately
7VA
Amplifier
section
Power
supply
section
2SA603
(x
4)
2SA546
(x
l)
2SB463
(x
l)
2SA603
(x
l)
Dimensions
and
weight:
Approximately
87,5
(width)mm
Accessories:
216
(height)mm
400(depth)mm
Approximately
4,
5
kg
Instruction
manual
2
copies
Test
report
l
copy
Power
cord
l
ea.
Fuse
2
ea.
~--~--------------·--~·-------------------------·--·--------------~------------------~
YOKOGAWA
ELECTRIC
WORKS,
LTD.
~---
e
g
'
i
~-
[
tnm
YEW
P.
3
4.
METHOD
OF
OPERATION
1)
Power
on
For
the
power
supply,
lOOV
(50
Hz
or
60Hz)
is
used,
turn
the
power
supply
switch
to
the
"on'
1
position,
following
the
connection
to
the
power
receptacle,
so
that
the
equipment
immediately
starts
operating
since
it
is
entirely
transistorized,
2)
Insert
the
AC
input
to
be
measured
into
the
input
connecting
terminal
of
the
front
panel,
3)
Set
the
slide
switch
of
the
rear
panel
approximately,
depending
on
whether
the
output
is
recorded
by
electromagnetic
oscillo-
graph
or
by
X-
Y
recorder.
4)
Adjust
the
input
signal
so
that
the
output
met~r
'1
VOLT
SCALE"
will
indicate
within
1,
5mA
(red
line)
in
case
of
recording
by
the
X-Y
recorder,
within
lOmV
(blue
line)
5)
Because
current
sensitivity
of
galvanometer
(G-170B)
is
±1
Oo/o
a
precision,
that
error
is
calibrated
by
GALV
CAL
of
the
front
panel,
-----,-------------------]
LTD.}
__
----·-
YIW
P.
4
5.
OPERATIONAL
FUNCTION
Fig.
1
Front
and
rear
panels
1)
Front
panel
•
In
the
output
meter,
the
upper
side
of
the
scale
indicates
mA
output,
and
the
lower
side
the
m V
output.
VOLT
SCALE
Each
step
indicates
the
input
voltage
for
the
length
on
the
output
recording
paper,
by
means
of
the
input
voltage
attenuator.
INPUT
Input
connecting
terminal.
YOKOGAWA
ELECTRIC
WORKS,
LTD
.
6
YIW
P,
5
GALV
CAL
For
the
calibration
of
current
sensitivity
of
galvanometer
(G-170B)
ONJ
OFF
Connection
of
power
supply
circuit.
2)
Rear
panel
OUTPUT
Output
connecting
terminal,
100
VAC
Connector
used
when
applying
an
100
VAC
power
line
as
the
power
supply.
6.
EXPLANATION
OF
CONSTRUCTION
AND
OPERATION
RECTIFIER
0--
INPUT
HIGH
INPUT
INPUT
IMPEDANCE
AMPLIFIER
,
~
0--
ATTENUATOR
r-
fr
CIRCUIT t
r-
Fig.
2
Diagram
of
construction
(Input
attenuator)
•
The
input
impedance
is
100
k!JJ
with
the
voltage
ratio
in
11
ranges
from
lOmV/cm
to
20V/cm,
YOKOGAWA
ELECTRIC
WORKS,
LTD
.
OUT
PUT
YEW
(High
input
impedance
circuit)
The
circuit
employs
the
Darlington
connection
for
input
transistors,
thus
increasing
the
AC
input
impedance;
the
P,
6
input
impedance
at
the
normal
temperature
is
more
than
lMfJ,
(Amplifier)
Though
the
amplification
factor
is
reduced,
the
equipment
uses
a
negative
feedback
amplifier,
thus
obtaining
a
flat
gain
with
respect
to
the
frequency
change
from
approximately
30Hz
to
20
kHz
and
also
the
linearity
to
the
nonlinearity
of
the
diode
rectification,
The
half-wave
rectified
voltage
becomes
output,
and
the
combined
sine
wave
is
negatively
fed
back
and
is
thus
provided
with
linearity.
7.
ADJUSTMENT
After
finishing
the
adjustment
the
test
results
were
recorded.
However,
should
a
trouble
be
encountered
or
an
accurate
measure-
ment
be
required,
the
following
adjustment
should
be
performed:
All
the
adjusting
portions
are
concentrated
on
the
printed
circuit
board
EEW-323A
and
Front
panel,
and
the
associated
adjustment
is
performed
by
the
following
three
volume
controls.
RVl
RVZ
RV3
Output
regulated
volume
(at
the
X-
Y
recorder
side)
Output
regulated
volume
(at
the
GALVA
side)
DC
power
supply
voltage
regulated
volume
Adjustment
of
R
V3
(set
on
printed
circuit
board)
R
V3
should
be
adjusted
so
that
the
DC
power
supply
voltage
becomes
-
24V
with
the
load
connected.
Adjustment
of
RVl
(set
on
printed
circuit
board)
At
the
rangeof
lOmV/cm
of
the
"VOLT
SCALE",
apply
sine
wave
input
of
0.
ZV,
1
kHz,
to
the
input
terminal
and
connect
the
X-
Y
recorder
to
the
output
terminal,
and
calibration
should
be
made
so
that
deflection
of
20
em
can
be
made
at
the
0,
5m
VI
range.
Adjustment
of
R
VZ
(set
on
front
panel)
Apply
the
sine
wave
of
0.
ZV,
1
kHz,
to
the
input
terminal
at
the
range
of
lOmV/cm
of
the
"VOLT
SCALE'
1,
and
connect
the
DC
ammeter
to
the
output
terminal
(GALVANOMETER
side);
adjust
the
R
VZ
so
as
to
obtain
approximately
1.
5mA.
But
R
VZ
is
used
to
caribrate
the
sensitivity
of
each
galvanometer.
YOKOGAWA
ELECTRIC
WORKS.
LTD.
YEW
P,
7
8.
SELECTION
OF
GALVANOMETER
AND
RECORDING
SENSITIVITY
Galvanometer
Type
G-170B,
the
products
of
YEW,
are
the
most
suitable
ones
for
this
equipment,
This
type
have
sensitivity
of
20
em
deflection
at
the
current
sensitivity
when
using
the
external
damping
resistance
at
1.
5mA
output,
thus
permitting
use
of
the
(VOLT
SCALE)
of
the
front
panel
as
it
is,
The
characteristics
of
other
types,
such
as
the
G-lOOA
and
G-170C
galvanometers,
are
given
below;
Flat
(±5%)
Current
Nominal
Required
Maximum
Linearity
Type
Frequency
Sensitivity
Coil
External Saje Within
Damping
Allowed
Number
Response
Resistance
Resistance
Current Detlection
C/s
)JA/m,
1l n
mA
mm
G-100A
50
1.
25
3 3 12 0 I I0 0
G
-170
B I0 0 3.3
22
17 1
10
0
G
-170
C 10 0 2.0 75 93 1
10
0
Galvanometer
characteristics.
The
above
describes
the
characteristics
of
the
galvanometer,
The
following
list
shows
the
overall
characteristics
when
using
the
Type
3
142
Coil
Current Input
Of
3t4Z
Coil
Current
Type
o.t
f.SrnA
OutpUi
Voltage
(With
the
dampiWJ
Type
2'?02
Multiplier
Number
resistance
oJ
Type
zqoz
insterted)
)JA
)JA/2ocm
Indication
6"-
IOOA
11
7 0
25
0 4
G-1708
654
6b 0 10
G--l70C
8 3 0
400
5
Characteristics
of
this
equjpment
used
with
the
galvanometer.
YOKOGAWA
ELECTRrC
WORKS,
LTD.
YEW
P,
8
9.
CAUTIONS
FOR
USE
1)
In
the
case
where
the
output
meter
deflects
more
than
1,
5mA
(red
line)
or
lOmV
(blue
line)
the
amplifier
is
saturated,
Thus,
the
wave
form
becomes
distorted
and
it
is
impossible
to
obtain
accurate
measurement,
2)
Connect
X-
Y
Recorder
or
Galvanometer
to
the
output
connecting
terminal
on
the
rear
panel,
Also
set
the
slide
switch
on
the
corresponding
side.
3)
When
using
the
electromagnetic
oscillograph,
it
is
possible
to
obtain
approximately
20
em
deflection
by
using
the
G-170B
galvanometer
at
3,3J.LA/cm
current
sensitivity
(coil
resistance
22
Q)
and
1,
5mA
power
supply
with
17 Q
damping
resistance,
When
another
type
of
galvanometer
is
used,
due
to
the
difference
of
current
sensitivity,
the
deflection
changes,
Therefore,
if
galvanometer
other
than
the
G-170B
type
is
used,
the
value
of
the
(VOLT
SCALE)
should
not
be
read
as
it
is,
In
this
case,
the
input
voltage
can
be
obtained
by
calculation,
For
example;
"VOLT
SCALE"
0,5V/cm
range
Output
terminal
"GALVANOMETER"
is
used,
Galvanometer
G-1
OOA
(coil
resistance
33
Q,
the
external
damping
resistance
120Q,
current
sensitivity
1,
25
J.LA/mm)
When
the
abGve
instruments
are
used,
and
15
em
deflection
is
obtained,
the
current
of
galvanometer
is
1,
25
J.LA
x
150
=
188
J.LA,
total
current
is
188
+
~
x
188
=
238
J.LA,
120
lOV
The
input
voltage
is
1500J.LA X
238
=
1,
58
V,
4)
This
converter
is
the
balanced
type
so
that
the
power
supply
grounded
can
be
measured
in
a
direct
means.
•
YOKOGAWA
ELECTRIC
WORKS,
LTD
.
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Turbidity
Meas-
uring
Instruments
, Liquid
Density
Measuring
Instruments,
Solution Conductivity
Measuring
Instruments,
Viscosity
Measur-
ing
Instruments,
Process
Titrator,
Residual
Chlorin
Analyzer.
Instruments
for
Gas
Analysis;
Chromatographs,
Petroleum
Sulfur
Analyzer.
Radiation
Instruments;
{1
Ray
Thicknes.s.
Gauge, y Ray
Density
Meter.
Digital
Control
Systems:
Direct
Digital
Control
Systems,
Computer
Control
Sys-
tems,
Digital
Blending
Control
Systems.
EUROPAISCHES
VERBINDUNGSBURO
2000
Hamburg
26,
Hammer L.andstrasse,
76
I.O.G., Gennany.
Phone: Hamburg
2191310
Cable Address: YOKOGAWA HAMBURG
YEW
TEC
CORPORATION
1995-Palmer
Ave., Larchmont, New York,
10538
U.S.A.
Phone:
914-834-3550
Telex:
710-566-1104
,_·,.
Printed
in Japan
Table of contents
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