Instrumentacion
Thermocouples & RTD's
INSTRUMENTS
Screw In Head Cover Head Transmitter Table A Table B
Threaded Connection Table C
StemThermocouple - Table D (p.4) or RTD - Table E (p.5)
Thermowell
( see pp. 18 & 19)
B
(optional)
X
1
T
M 25
K
1
S
G
6
(Optional)
TableA - Connection Heads
TYPE
Table B - Transmitters -
(optional)
B
TYPE
A
In Head Standard
(with window head Z)
In Head with Digital Display
X =4-20mA 2-wire trans. B = 4-20mA 2-wire trans. R = 4-20mA 2-wire Hart trans. A = 4-20mA 2-wire Hart trans.
(with window head W)
Universal Cast Aluminum TYPE
UniversalCast Iron TYPE
G
H
T = 4-20mA 2-wire trans. H = 4-20mA 2-wire Hart trans.
Table C - Threaded Connections
Use spring loaded connection Spring Loaded Welded withthermowells. Use welded connection when stem goes Standard Standard Steel directly into the process medium. 316SS 316SS
Fittings
1/2" NPT Hex Fitting
316SS TYPEAluminum Flip-Top TYPE
I
W
Fittings
Fittings
(use with digital display)
Epoxy Coated Aluminum TYPE
Aluminum, Window TYPE
1T
X
1 5/8"
---
1F
ET
1/2" NPT Pipe-Nipple
2-1/2"
X
2T
2L
---
Explosion Proof, Aluminum TYPE
ATEX Explosion Proof, Aluminum TYPE
J
Z
1/2" NPT Nipple UnionNipple
4T
5"
4L
4F
X
Explosion Proof 316SS TYPE
Explosion Proof, Window TYPE
(use with digital display)
1/2" NPT Explosion Proof Hex
S
C
7T
2"---
---
X
Table D - Stems
Poly Plastic (white) Poly Plastic (Black)
Thermocouples see p.4 RTD's see p.5
Service Inspired, Quality Driven
3
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