114 / 192
Extension Wire
-
lnsulated
Richards
Extension
wire is
used
to
complete
the thermocouple
circuit
from the thermocouple element to
the temperature
instrument. The
extension
wire
and
thermocouple wire
musf
both be
of
the same
calibration
type
lo
maintain
the accuracy
of the
thermocouple. The
polarity of each set of
wires
must
also
be maintained
during
installation or errors will be introduced into the
circuit'
The
RED
wire
is always
the NEGATIVE
leg
of the extension
wire.
Extension
wire
is
also color coded
to
help
with identification
and
installation.
See the extension wire color code table in this
catalog.
lf the wire
will
be subject
to
repeated
flexing,
a
stranded
wire
should
be used
to
prevent conductor
breakage.
To
specify stranded conductors,
add
a
S
to
the end
of
the
part numbers listed
below.
For
typical, non{lexing,
ambient
temperature, indoor
use,
a 20 gauge
(1
.3mm)
solid
conductor
with PVC
insulation
wire is an
excel-
lent
choice.
This wire is
low
cost and
resistant
to oils, chemicals, abrasion, moisture, and
acids.
Never
install
extension wire
in the
same conduit as power
lines.
This will cause interference and errors
in
the temperature
readings. lt
is a good
practice
to
keep the
extension wire at least
1
foot away from power lines
to
maintain
a accurate thermocouple circuit. Thermocouple extension wire
can
be supplied
on spools or
coils.
Wire orders will
be
spooled
plus
or minus
10% of
the total quantity
unless
othenruise
specified
by the
customer.
lf
you
require spooled wire
just
specify
the
part number and
the
footage.
The extension wire
part numbers below, specify
the wire
gauge,
type and insulation
material.
Example:
24KKX'GG
l
ruot"",
{-Speciat
limits
can
be
specified
by doubling the
type tetter
in
the
paft
number.
/-NicXet
vs.
Nickel
Moty thermocouples
can use
Type
KX extension
wire
at room
temperature.
/-fype
P
(Ptatinet
Il)
thermocouples
can
use
Type
KX ertension
wire
at room
temperature.
/-fype
B
thermocouples
can
use
ordinary copper
wire for
extension
wire
at room
temperature.
/-fype
C
(Tungsten, 57"
Rhenium vs.
Tungsten,
26%
Rhenium)
can use Type
RSX wire
at room
temperature.
fype
BX-
Extension
Wire
fype
EX-
Extension
Wire
16EX.PP
16EX.TT
16
16
Sol
Sol
d
d
Ployvinyl Plastic
Teflon
TFE
(Fused
Tape)
Ployvinyl Plastic
Teflon
TFE
(Fused
Tape)
220
400
104
204
25.0
25.0
37.2
37.2
.20
x
.13
.16
x
.10
5.1
x
3.3
4.1
x2.5
20E-GG-
20EX.PP
20
20
So
So
d
d
Fibre
Glass, lmpregnated
Teflon
TFE
(Fused
Tape)
Fibre
Glass, lmpregnated
Gflon TFE
(Fused
Tape)
400
220
204
104
7.7
12.5
11
.5
18.6
.09
x
.06
.16
x.10
2.3x1.5
4.1
x2.5
Non-magnetic,
Nickel,
10% Chromium)
*Thermocouple quality - Overall
-
and
Red
(Negative, Non-magnetic, Constantan)
Brown,
if a tracer
-
Black
or
White.
Outer
jacket
-
Purple.
Type
JX'Extension
Wire
14JX.PP
14
Solid
Ployvinyl Plastic
Ployvinyl Plastic
220
104
34.5
51 .3
.22
x
.15
5.6 x 3.8
16JX.GG
16JX-GG.S
16JX.PP
16JX-TT
16
16
16
16
Solid
Solid
Solid
Solid
Fibre
Glass, lmpregnated
Fibre
Glass, lmpregnated
Ployvinyl Plastic
Teflon
TFE
(Fused
Tape)
Fibre Glass, lmpregnated
Fibre
Glass, lmpregnated
Ployvinyl Plastic
Teflon
TFE
(Fused
Tape)
400
400
220
400
204
204
104
204
17
,9
20.8
25.0
25.0
26.6
31 .0
37.2
37.2
.15
x
.09
.16
x.10
.20
x.13
.16
x
.10
3.8 x2.2
4.1 x2.5
5.1 x 3.3
4.1
x2.5
2OJ-GG-
2OJX.PP
2OJX.PP-S
2OJX.PP-S.TW-SD
20J-TT-ex*
20
20
20
20
20
Solid
Solid
Stranded
Stranded
Solid
Fibre
Glass, lmpregnated
Ployvinyl Plastic
Ployvinyl Plastic
Ployvinyl Plastic,
(twisted + drain wire)
Teflon
FEP
(Extruded)
Fibre Glass, lmpregnated
Ployvinyl Plastic
Ployvinyl Plastic
Ployvinyl Plastic,
(twisted + drain wire)
Teflon
FEP
(Extruded)
900
220
220
220
400
480
104
104
104
204
7.7
12.5
14.0
16.0
11
.0
11
.5
18.6
20.8
23.8
16.4
09 x
.06
16
x,10
19 x.11
17
x
.17
12
x
.07
2.3
x
1.5
4.1
x2.5
4.7
x2,7
4.32 x 4.32
8X1
3.1
Outer
jacket -
Black
or
White.
Color Code
-
White
(Positive, Magnetic,
lron)
and
Red
(Negative, Non-magnetic, Constantan)
*Thermocouple quality - Overall -
Erywn,
if tracer
- Black
Page
114