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Thermocouple
Heads
-
Aluminum
The
NEMA
tion.
The
most
Their
definitions
/
NEMA
2:
,/
NEMA
4:
{
NEMA
4x=
enclosure performance
ratings
for each of our
heads
are
listed
to
help
you select the proper
head
for your
applica-
common NEMA
Ratings
for thermocouple connection heads in our catalog, are the
NEMA
Type
2,4,
and Type
4X.
from the
National Electrical Manufacturers
Association
Classification
detailed in NEMA
250-1997
are shown
below'
For
indoor
use
to
provide personnel protection
against
incidental contact with
the enclosed
equipment
and
provide
protection against
from falling dirt, dripping or
light
splashing
water.
For
indoor
or outdoor
use
to provide
protection
from falling dirt,
rain, sleet, snow,
windblown dust, splashing
water,
hose directed water,
and will
be
undamaged
by
the formation of
ice on
the external
surface of
the
head.
For
indoor or outdoor
use
to provide
protection
from falling dirt,
rain, sleet, snow,
windblown dust, splashing
water,
hose directed water,
corrosion,
and
will
be undamaged
by
the
formation
of ice on
the
external surface of
the
head.
Standard
Screw
Cover Head
With
Chain
.
Aluminurn
Single
/
2
Single
i
2
Single
/
2
Single
i
2
Double
/
4
Double
/
4
Double
/
4
Double
/
4
RTD/
6
RTD/
6
RTD/
6
RTD/
6
Triple
/
6
Triple
/
6
Triple
/
6
Triple
/
6
Height
-
3.6" or
91.4mm
width
-
3.6" or
91.4mm
Cap
Diameter
-
3.1"
or 78.74mm
NEMA
Rating
-
Type
4
314"
NPT
314' NPT
314"
NPT
314"
NPT
314"
NPT
314"
NPT
314"
NPT
314"
NPT
314"
NPT
314' NPT
314"
NPT
314"
NPT
314"
NPT
314"
NPT
314"
NPT
314"
NPT
AWTS
AWTS
AWTS
AWTS
AWTD
AWTD
AWTD
AWTD
AWTT
AWTT
AWTT
AWTT
AWTR
AWTR
AWTR
AWTR
SHSO2
SHSOS
SHS1 2
SHS1 6
SHDO2
SH DO8
SHDl
2
SHDl
6
SHTO2
SHTOs
SHT1 2
SHT1 6
SHTRO2
SHTROS
SHTRl
2
SHTRl
6
1/8" NPT
1/2" NPT
314"
NPT
1'' NPT
1/8" NPT
1/2" NPT
314"
NPT
1'' NPT
1/B''
NPT
1/2" NPT
314"
NPT
1'' NPT
1/9" NPT
1/2" NPT
314"
NPT
1'' NPT
Flip-Top Head
-
Aluminum
Height
-
3.4" or
86.4mm
width
-
3.1"
or
78.7mm
Cap Diameter
-
3.3"
or B3.8mm
NEMA
Rating
-
Type
4
Single
/
2
Single
/
2
Single
/
2
Double
/
4
Double
/
4
Double
/
4
Triple
/
6
Triple
/
6
Triple
/
6
RTD/
6
RTD/
6
RTD/
6
AWTS
AWTS
AWTS
AWTD
AWTD
AWTD
AWTT
AWTT
AWTT
AWTR
AWTR
AWTR
1/9" NPT
1/2" NPT
314"
NPT
1/9" NPT
1/2" NPT
314"
NPT
1/8" NPT
1/2" NPT
314"
NPT
1/B''
NPT
1/2" NPT
314"
NPT
314"
NPT
314"
NPT
314' NPT
314"
NPT
314' NPT
314' NPT
314"
NPT
314"
NPT
314"
NPT
314"
NPT
314"
NPT
314"
NPT
AFTHSO2
AFTHSOs
AFTHS12
AFTHDO2
AFTHDOS
AFTHDl2
AFTHTO2
AFTHTOS
AFTHT12
AFTHTRO2
AFTHTROS
AFTHTRl2
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