1. General Introduction

EJA438E Diaphragm Sealed Gauge Pressure Transmitters can be used to measure gauge pressure of liquid, gas, or steam, especially for high temperature process which up to 310°C, standard flange connection with 112/", 2", 3" and 4", flush and extend type flange selectable with pressure rating up to 600lbs; standard capillary up to 10 meters.

2. Measuring Span & Range limits

Measurement

Span/Range

MPa

inH2O

(/D1)

mbar

(/D3)

 

mmH2O

(/D4)

 

A

Span

0.06 to 3.5

8.6 to 500

0.6 to 35

0.6 to 35

Range

-0.1 to 3.5

-14.5 to 500

-1 to 35

-1 to 35

 

B

 

Flush type

Span

0.46 to 16

67 to 2300

4.6 to 160

4.6 to 160

Range

-0.1 to 16

-14.5 to 2300

-1 to 160

-1 to 160

Extended type

Span

0.46 to 7

67 to 1000

4.6 to 70

4.6 to 70

Range

-0.1 to 7

-14.5 to 1000

-1 to 70

-1 to 70

3. Process temperature, Ambient temperature, and Working pressure

Liquid Fill

Code

Process temperature*

Ambient temperature*

Working pressure

Silicone oil

(general use)

A

–10 to 250°C

(14 to 482°F)

–10 to 60°C

(14 to 140°F)

2.7 kPa abs

(0.38 psi abs)

to flange rating pressure

Silicone oil

(general use)

B

–30 to 180°C

(–22 to 356°F)

–15 to 60°C

(5 to 140°F)

Silicone oil

(high   temperature use)

C

10 to 310°C

(50 to 590°F)

10 to 60°C

(50 to 140°F)

Fluorinated oil

(oil-prohibited   use)

D

–20 to 120°C

(–4 to 248°F)

–10 to 60°C

(14 to 140°F)

51 kPa abs

(7.4 psi abs)

to flange rating pressure

Ethylene glycol

(low temperature   use)

E

–50 to 100°C

(–58 to 212°F)

–40 to 60°C

(–40 to 140°F)

100 kPa abs

(atmospheric pressure)

to flange pressure rating

Silicone oil

(high temp. and   high

vacuum use)

1

–10 to 250°C

(14 to 482°F)

–10 to 60°C *

(14 to 140°F)

0.013 kPa abs

(0.0019 psi abs)

to flange rating pressure

Silicone oil

(high temp. and   high

vacuum use)

2

10 to 310°C

(50 to 590°F)

10 to 60°C

(50 to 140°F)

Silicone oil

(high vacuum use)

4

–10 to 100°C

(14 to 212°F)

–10 to 60°C

(14 to 140°F)

4. Flange size and rating

Process connection style

Size

Flange

Flush type

3-inch,

2-inch,

11/2-inch

JIS   10K, 20K, 40K, 63K

ANSI   Class 150, 300, 600

JPI   Class 150, 300, 600

DIN PN10/16, 25/40, 64

Extended type

4-inch, 3-inch

JIS   10K, 20K, 40K

ANSI   Class 150, 300

JPI   Class 150, 300

DIN PN10/16, 25/40

5. Model and suffix codes

5.1 Transmitter body selection

Main Code

Suffix Codes

Description

EJA438E









Diaphragm gauge pressure   transmitter

Output signal

-D








4 to 20 mA DC with   digital communication (BRAIN protocol)

-J








4 to 20 mA DC with   digital communication (HART 5/HART 7 protocol)

-F








Digital communication   (FOUNDATION Fieldbus protocol)

-G








Digital communication   (PROFIBUS PA protocol)

-Q








Low Power, 1 to 5 V DC   with digital communication (HART 7 protocol)

Measurement

span (capsule)

A







0.06 to 3.5MPa (8.6 to   500 psi)

B







0.46 to 16MPa (67 to   2300 psi)

—

S






Always S

—


C





Always C

Cover flange bolts and   nuts

material



J




B7 carbon steel




G




316L SST




C




660 SST

Installation




-9



Horizontal   piping and left side high pressure

Amplifier housing





1


Cast aluminum alloy






3


Cast aluminum alloy   with corrosion resistance properties






2


ASTM CF-8M stainless   steel

Electrical connection






0

G1/2   female, one electrical connection without blind plugs







2

1/2   NPT female, two electrical connections without blind plugs







4

M20   female, two electrical connections without blind plugs







5

G1/2   female, two electrical connections and a blind plug







7

1/2   NPT female, two electrical connections and a blind plug







9

M20   female, two electrical connections and a blind plug







A

G1/2   female, two electrical connections and a SUS316 blind plug







C

1/2   NPT female, two electrical connections and a SUS316 blind plug







D

M20   female, two electrical connections and a SUS316 blind plug

Integral indicator







D

Digital indicator








E

Digital indicator with   the range setting switch (push button)








N

None

Mounting bracket








B

304   SST 2-inch pipe mounting, flat type (for horizontal piping)









J

316   SST 2-inch pipe mounting, flat type (for horizontal piping)









N

None

Optional codes

/Optional codes


5.2 Diaphragm seal selection 3-inch(80mm)/2-inch(50mm) flush type

Main Code

Suffix Codes

Description

EJA438E











Transmitter body   section (I)

Process connection style

-W










Flush type

Flange rating

J1









JIS 10K

J2









JIS 20K

J4









JIS 40K

J6









JIS 63K

A1









ANSI class 150

A2









ANSI class 300

A4









ANSI class 600

D2









DIN PN10/16

D4









DIN PN25/40

D5









DIN PN64

P1









JPI class 150

P2









JPI class 300

P4









JPI class 600

Process connection size (Process flange size)

3








3-inch (80 mm)


2








2-inch (50 mm)

Flange material


A







JIS S25C



B







304 SST



C







316 SST

Gasket contact surface



1






Serration (for   ANSI flange with wetted parts material SW only)




2






Flat (no   serration)

Wetted parts material




SW





316L SST Diaphragm, 316L SST Others





HW





Hastelloy C-276 Diaphragm, Hastelloy C-276 Others





TW





Tantalum Diaphragm, Tantalum Others





UW





Titanium Diaphragm, Titanium Others

Flushing connection ring





0




None






A




Straight type   ring, R1/4 connections, 316 SST






B




Straight type   ring, 1/4NPT connections, 316 SST

Extension






0



None

Fill fluid







-A


For general   (silicone oil), Process–10 to 250°C, Ambient–10 to 60°C








-B


For general   (silicone oil), Process–30 to 180°C, Ambient–15 to 60°C








-C


For high   temperature (silicone oil), Process 10 to 310°C, Ambient10 to   60°C








-D


For   oil-prohibited (fluorinated oil), Process-20 to 120°C, Ambient-10 to   60°C








-E


For low   temperature (ethylene glycol), Process-50 to 100°C, Ambient-40 to   60°C








-1


For high temp.   & vacuum (silicone oil), Process-10 to 250°C, Ambient-10 to   60°C








-2


For high temp.   & vacuum (silicone oil), Process10 to 310°C, Ambient10 to   60°C








-4


For high vacuum   (silicone oil), Process-10 to 100°C, Ambient-10 to   60°C

Capillary connection








A

Side of diaphragm seal unit

—









2

Always 2

Capillary length*










1

1m











2

2m











3

3m











4

4m











5

5m











6

6m











7

7m











8

8m











9

9m











A

10m

Optional codes

/Optional codes

5.3 Diaphragm seal selection 1-1/2inch(40mm) flush type

Main Code

Suffix Codes

Description

EJA438E











Transmitter body   section (I)

Process connection style

-W










Flush type

Flange rating

J1









JIS 10K

J2









JIS 20K

J4









JIS 40K

A1









ANSI class 150

A2









ANSI class 300

A4









ANSI class 600

P1









JPI class 150

P2









JPI class 300

P4









JPI class 600

Process connection size

(Process flange size)

8








1-1/2-inch (40   mm)

Flange material


A







JIS S25C



B







304 SST



C







316 SST

Gasket contact surface



1






Serration (for   ANSI flange with wetted parts material SW only)




2






Flat (no   serration)

Wetted parts material




SW





316L SST Diaphragm, 316L SST Others

Flushing connection ring





C




Reducer type   ring, R1/4 connections, 316 SST






D




Reducer type   ring, 1/4NPT connections, 316 SST

Extension






0



None

Fill fluid







-A


For general   (silicone oil), Process–10 to 250°C, Ambient–10 to 60°C








-B


For general   (silicone oil), Process–30 to 180°C, Ambient–15 to 60°C








-D


For   oil-prohibited (fluorinated oil), Process-20 to 120°C, Ambient-10 to   60°C








-E


For low   temperature (ethylene glycol), Process-50 to 100°C, Ambient-40 to   60°C








-1


For high temp.   & vacuum (silicone oil), Process-10 to 250°C, Ambient-10 to   60°C








-4


For high vacuum   (silicone oil), Process-10 to 100°C, Ambient-10 to   60°C

Capillary connection








A

Side of diaphragm seal unit

—









2

Always 2

Capillary length*










1

1m











2

2m











3

3m











4

4m











5

5m











6

6m











7

7m











8

8m











9

9m











A

10m

Optional codes

/Optional codes

5.4 Diaphragm seal selection 4-inch(100mm)/3-inch(80mm) extend type

Main Code

Suffix Codes

Description

EJA438E











Transmitter body   section (I)

Process connection style

-E










Extended type

Flange rating

J1









JIS 10K

J2









JIS 20K

J4









JIS 40K

A1









ANSI class 150

A2









ANSI class 300

P1









JPI class 150

P2









JPI class 300

D2









DIN PN10/16

D4









DIN PN25/40

Process connection size

(Process flange size)

4








4-inch (100 mm)


3








3-inch (80 mm)

Flange material


A







JIS S25C



B







304 SST



C







316 SST

Gasket contact surface



1






Serration (for   ANSI flange with wetted parts material SW only)




2






Flat (no   serration)

Wetted parts material




SE





316L SST Diaphragm, 316L SST Others

Flushing connection ring





0




None

Extension






1



Length (X2) = 50 mm







3



Length (X2) = 100 mm







5



Length (X2) = 150 mm

Fill fluid







-A


For general   (silicone oil), Process–10 to 250°C, Ambient–10 to 60°C








-B


For general   (silicone oil), Process–30 to 180°C, Ambient–15 to 60°C








-C


For high   temperature (silicone oil), Process100 to 310°C, Ambient10 to   60°C








-D


For   oil-prohibited (fluorinated oil), Process-20 to 120°C, Ambient-10 to   60°C








-E


For low   temperature (ethylene glycol), Process-50 to 100°C, Ambient-40 to   60°C








-1


For high temp.   & vacuum (silicone oil), Process-10 to 250°C, Ambient-10 to   60°C








-2


For high temp.   & vacuum (silicone oil), Process10 to 310°C, Ambient10 to   60°C








-4


For high vacuum   (silicone oil), Process-10 to 100°C, Ambient-10 to   60°C

Capillary connection








B

Back of diaphragm seal unit

—









2

Always 2

Capillary length*










1

1m











2

2m











3

3m











4

4m











5

5m











6

6m











7

7m











8

8m











9

9m











A

10m

Optional codes

/Optional codes