Instrumentacion

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Head Assemblies - (Head & Connection)
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

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