EJA118E Differential Pressure Transmitter

Brand: Yokogawa Electric Corporation

Diaphragm seals are used to prevent process medium form entering directly into the pressure-sensing assembly of the differential pressure transmitter, they are connected to the transmitter using capillaries filled with fill fluid. 

EJA118E Diaphragm Sealed Differential Pressure Transmitters can be used to measure liquid, gas, or steam flow, as well as liquid level, density, and pressure. EJA118E outputs a 4-20 mA DC signal corresponding to the measured differential pressure. 

Its highly accurate and stable sensor can also measure the static pressure which can be shown on the integral indicator or remotely monitored via BRAIN or HART communications.

Other key features include quick response, remote set-up using communications, and self-diagnostics. 

FOUNDATION Fieldbus, PROFIBUS PA and 1-5 Vdc with HART (low power) protocol types are also available.

All EJA-E series models in their standard configuration, with the exception of the Fieldbus, PROFIBUS and Low Power types, are certified as complying with SIL 2 for safety requirement.
Features
  • ± 0.2% Accuracy
  • 200 ms Response Time
  • Exida and TUV SIL2 / SIL3 Certified
  • Local Parameter Setting (LPS)
  • 10-segment Signal Characterizer
  • Active Capillary Fill Fluid Density Compensation

Specifications

Accuracy

  • ± (0.15 + 0.01 URL/Span) % of Span (Includes Terminal-based Linearity, Hysteresis, & Repeatability) - Capsule M & H
  • ± 0.2 % of Span (Includes Terminal-based Linearity, Hysteresis, & Repeatability) - Capsule M & H

Adjustment

  • Push-Buttons

Alarm

  • Down-Scale: -5 %, 0.8 Vdc or Less for 1-5 V HART
  • Down-Scale: -5 %, 3.2 mA DC or Less for 4-20 mA HART/BRAIN
  • Up-Scale: 110 %, 21.6 mA DC or more (Standard) for 4-20 mA HART/BRAIN
  • Up-Scale: 110 %, 5.4 Vdc or more (Standard) for 1-5 V HART

Ambient Temperature Range

  • -30° to 60° C (-22° to 140° F) with LCD Display
  • -40° to 60° C (-40° to 140° F)

Approvals & Certifications

  • ATEX Flameproof & Intrinsically Safe
  • CSA Explosion-proof & Intrinsically Safe
  • EMC EN 61326-1 Class A, EN 61326-2-3, EN 61326-2-5
  • FM Explosion-proof & Intrinsically Safe
  • IECEx Intrinsically Safe & Flameproof
  • NAMUR NE43
  • PED 97/23/CE

Approvals & Certifications

  • Leak Test Certificate
  • Material Certificate
  • Pressure Test Certificate
  • SIL 2 Capability for Single Transmitter Use, SIL 3 Capability for Dual Transmitter Use, IEC 61508: 2000, Part1 to Part 7

Cable Material

  • Polyethylene Insulated PVC Sheathed

Capillary Length

  • 16 feet (5 metres)

Capillary Material

  • JIS 316 Stainless Steel

Communication

  • BRAIN
  • FOUNDATION Fieldbus
  • HART
  • PROFIBUS PA

Consumption

  • 0.96-3 mA - Power Consumption
  • 27 mW - Power Consumption

Damping Adjustment

  • 0 to 100 seconds - Damping Time Constant

Diagnostics

  • Configuration Error
  • CPU Failure
  • Hardware Failure
  • Process Alarm for Differential Pressure, Static Pressure or Capsule Temperature
  • User-Configurable Process High/Low Alarm

Diaphragm Material

  • 316L Stainless Steel
  • Hastelloy C-276
  • Tantalum
  • Titanium

Display

  • 10-Segment Signal Characterizer
  • 5-Digit Numerical Display
  • 6-Digit Unit Display
  • Bar Graph
  • LCD Display

Distance

  • Up to 2 Kilometers - Communication Distance

Drain, Vent Valves & Plug

  • 316 Stainless Steel

Electrical Connectors

  • 1/2” NPT Female
  • 1/4” NPT - Vent/Drain Plug
  • G 1/2” Female
  • M20 Female
  • R: 1/4” - Vent/Drain Plug

Electrical Protection

  • Lightning Protection

Enclosure Finish

  • Anti-Corrosion Coating
  • Polyurethane Paint - Deep Sea Moss Green Paint (Munsell 0.6 GY3.1/2.0)

Enclosure, Body Material

  • ASTM CF-8M Stainless Steel
  • Low-Copper Aluminum

Environmental Protection

  • IP66
  • IP67
  • NEMA 4X

Fill Material

  • Ethylene Glycol
  • Fluorinated Oil
  • Silicone Oil

Flange Material

  • 316L Stainless Steel - Cover Flange Bolts & Nuts Material
  • 660 Stainless Steel - Cover Flange Bolts & Nuts Material
  • ASTM CF-8M - Cover Flange
  • B7 Carbon Steel - Cover Flange Bolts & Nuts Material
  • JIS S25C - Process Flange
  • JIS SUS304 - Process Flange, Protection Tube (PVC - Sheathed)
  • JIS SUS316 - Process Flange

Flange Size - 1-1/2” (DN 40)

  • 1-1/2” (DN 40) - 150# ANSI/JPI
  • 1-1/2” (DN 40) - 300# ANSI/JPI
  • 1-1/2” (DN 40) - 600# ANSI/JPI
  • 1-1/2” (DN 40) - JIS 10K
  • 1-1/2” (DN 40) - JIS 20K
  • 1-1/2” (DN 40) - JIS 40K
  • 1-1/2” (DN 40) - PN 10
  • 1-1/2” (DN 40) - PN 16
  • 1-1/2” (DN 40) - PN 25
  • 1-1/2” (DN 40) - PN 40
  • 1-1/2” (DN 40) - PN 64

Flange Size - 2” (DN 50)

  • 2” (DN 50) - 600# ANSI/JPI
  • 2” (DN 50) - JIS 10K
  • 2” (DN 50) - JIS 20K
  • 2” (DN 50) - JIS 40K
  • 2” (DN 50) - PN 10
  • 2” (DN 50) - PN 16
  • 2” (DN 50) - PN 25
  • 2” (DN 50) - PN 40
  • 2” (DN 50) - PN 64
  • 2” (DN 50) - 150# ANSI/JPI
  • 2” (DN 50) - 300# ANSI/JPI

Flange Size - 3” (DN 80)

  • 3” (DN 80) - 150# ANSI/JPI
  • 3” (DN 80) - 300# ANSI/JPI
  • 3” (DN 80) - 600# ANSI/JPI
  • 3” (DN 80) - JIS 10K
  • 3” (DN 80) - JIS 20K
  • 3” (DN 80) - JIS 40K
  • 3” (DN 80) - PN 10
  • 3” (DN 80) - PN 16
  • 3” (DN 80) - PN 25
  • 3” (DN 80) - PN 40
  • 3” (DN 80) - PN 64

Flange Size - 4” (DN 100)

  • 4” (DN 100) - 150# ANSI/JPI
  • 4” (DN 100) - 300# ANSI/JPI
  • 4” (DN 100) - JIS 10K
  • 4” (DN 100) - JIS 20K
  • 4” (DN 100) - PN 10
  • 4” (DN 100) - PN 16
  • 4” (DN 100) - PN 25
  • 4” (DN 100) - PN 40

Fluid Specific Gravity

  • 0.94 to 1.09 - Silicone Oil
  • 1.09 - Ethylene Glycol
  • 1.90 to 1.92 - Fluorinated Oil

Gasket Material

  • 316 Stainless Steel (Hoop) - Spiral Gasket for Transmitter Side
  • PTFE Teflon (Filler) - Spiral Gasket for Transmitter Side

Humidity

  • 0 to 100 % Relative Humidity - Ambient Humidity

Input Impedance

  • 10 kiloohms or more at 2.4 kHz

Load

  • 0 to 1,290 ohms - for Operation
  • 0.22 μF or Less - Load Capacitance
  • 250 to 600 ohms - for Digital Communication
  • 3.3 MH or Less - Load Inductance

Materials of Construction

  • 304 Stainless Steel - Mounting Bracket
  • 316 Stainless Steel - Name Plate & Tag

Mounting

  • 2” (50.8 mm) Pipe Mounting - Transmitter

Mounting Position

  • Horizontal

NACE & NIST

  • NACE MR-0175, ISO 15156

O-Ring Material

  • Buna-N - Cover O-Ring
  • Fluororubber - Cover O-Rings

Output

  • 1-5 Vdc
  • 4-20 mA DC

Output Load

  • 1 Megaohm or Greater

Power Supply Effect

  • ± 0.005 % Per Volt (From 21.6 to 32 Vdc, 350 ohms)

Pressure Range

  • Inches WC: -2,000 to 2,000
  • kPa: -500 to 500
  • mbar: -5,000 to 5,000
  • mmWC: -10,000 to 10,000
  • psi: -72.52 to 72.52

Pressure Type

  • Absolute
  • Differential
  • Gauge

Process Connection Style

  • Extended Typical
  • Flush Typical

Process Temperature

  • 10° to 310° C (50° to 590° F) - High Temperature Use
  • -50° to 100° C (-58° to 212° F) - Low Temperature Use

Response Time

  • 200 milliseconds (Approximately Value at Normal Temperature)

Screw Material

  • 316 Stainless Steel - Zero-Adjustment Screw & Set Screws, Mounting Bracket

Span - Minimum

  • psi: 73 (MPa: 0.5, bar: 5)

Static Pressure Effect

  • ± 0.014 % of URL Per psi: 100 (MPa: 0.69, bar: 6.9) - Zero Effect
  • ± 0.02 % of Span Per psi: 100 (MPa: 0.69, bar: 6.9) - Span Effect

Supply Pressure

  • psi: 0 to 14.5 (kPa: 0 to 100, bar: 0 to 1)

Supply Voltage

  • 10.5-30 Vdc - Intrinsically Safe, Typical N, or Non-Incendive
  • 10.5-32 Vdc - Lightning Protector
  • 10.5-42 Vdc - General Use & Flameproof Typical
  • 16.6 Vdc - for Digital Communications, BRAIN & HART
  • 24 Vdc - up to A 550 ohms Load
  • 9-28 Vdc - General Use & Flameproof Typical (4-20 mA HART/BRAIN)

Temperature Effect

  • ± (0.48 % of Span + 0.06 % of URL) Per 28° C (50° F) - Capsule M & H Ambient Temperature Effect

Update Time

  • 360 milliseconds - Static Pressure
  • 45 milliseconds - Differential Pressure

Wetted Materials

  • 316 Stainless Steel - Pipe
  • 316L Stainless Steel
  • Hastelloy C-276
  • Tantalum
  • Titanium

Zero Offset

  • External Zero is Continuously Adjustable with 0.01 % Incremental Resolution of Span
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