Yokogawa Gauge Pressure Transmitter, EJX430A
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EJX430A Gauge Pressure Transmitter

Brand: Yokogawa Electric Corporation
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The high performance gauge pressure transmitter EJX430A features single crystal silicon resonant sensor and is suitable to measure liquid, gas, or steam pressure. 

The EJX430A outputs a 4 to 20 mA DC signal corresponding to the measured pressure. It also features quick response, remote setup and monitoring via BRAIN or HART communications, and diagnostics.

The multi-sensing technology provides the advanced diagnostic function to detect such abnormalities as an impulse line blockage or heat trace breakage. 

FOUNDATION Fieldbus and PROFIBUS PA protocol types are also available. All EJX series models in their standard configuration, with the exception of the Fieldbus and PROFIBUS types, are certified as complying with SIL 2 for safety requirement.
Features
  • ± 0.04% Accuracy (0.025% Accuracy optional)
  • ± 0.1% per 15 years Stability
  • 90 ms Response Time
  • Exida and TUV SIL 2/3 Certified
  • Local Parameter Setting (LPS)

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Specifications

Brand

Accuracy

  • ± (0.005 + 0.0035 URL/Span) % of Span (Includes the Effects of Terminal-based Linearity, Hysteresis & Repeatability)
  • ± (0.005 + 0.0049 URL/Span) % of Span (Includes the Effects of Terminal-based Linearity, Hysteresis & Repeatability)
  • ± 0.04 % of Span (Includes the Effects of Terminal-based Linearity, Hysteresis & Repeatability)

Adjustment Type

  • External Zero Adjustment Screw
  • Push Button

Alarm

  • Down-Scale: -5 %, 3.2 mA DC or Less
  • Up-Scale: 110 %, 21.6 mA DC or more

Ambient Temperature Range

  • -30° to 80° C (-22° to 176° F) - with LCD Display
  • -40° to 85° C (-40° to 185° F)

Approvals & Certifications

  • Leak Test
  • Material Certificate
  • Pressure Test
  • SIL Certification - SIL 2 Capability for Single Transmitter Use, SIL 3 Capability for Dual Transmitter Use, IEC 61508: 2000

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 Approval
  • NAMUR NE43
  • PED 97/23/EC

BSP Connection

  • 1/2” BSPT Female
  • 1/4” BSPT Female

Burst Pressure

  • psi: 10,000 (kPa: 68,950, bar: 689)

Cable Material

  • Polyethylene Insulated PVC Sheathed

Communication

  • BRAIN
  • FOUNDATION Fieldbus
  • HART
  • PROFIBUS PA

Damping Adjustment

  • 0 to 100 seconds

Diagnostics

  • Capsule Temperature
  • Configuration Error
  • CPU Failure
  • Hardware Failure
  • Over-Range Error for Pressure
  • User-Configurable Process High/Low Alarm for Pressure

Diaphragm Material

  • Hastelloy C-276

Display

  • 5-Digit Numerical Display
  • 6-Digit Unit Display
  • Bar Graph
  • LCD Display

Distance

  • Up to 2 Kilometers

Drain, Vent Valves & Plug

  • 316 Stainless Steel
  • Hastelloy C-276
  • Monel

Electrical Connectors

  • 1/2” NPT Female
  • G 1/2” Female
  • M20 Female

Enclosure Finish

  • Anti-Corrosion Coating
  • Polyurethane Paint, Mint-Green Paint (Munsell 5.6BG 3.3/2.9 or its Equivalent)

Enclosure, Body Material

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

Environmental Protection

  • IP66
  • IP67
  • NEMA 4X

Fill Material

  • Fluorinated Oil
  • Silicone

Flange Material

  • ASTM CF-8M - Cover Flange
  • Hastelloy C-276 - Cover Flange & Capsule
  • Monel - Cover Flange & Capsule

Gasket Material

  • Fluorinated Rubber - Process Connector Gasket
  • PTFE Teflon - Process Connector Gasket
  • Teflon-Coated 316L Stainless Steel - Capsule Gasket

Humidity

  • 0 to 100 % Relative Humidity - Ambient Humidity

Input Impedance

  • 10 kiloohms or more at 2.4 kHz - Communicating Device

Length

  • 4.6” (119 mm) - Total Length

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 Bracket

Media

  • Gas
  • Liquids
  • Steam

Mounting

  • 2” Pipe Mounting Bracket

Mounting Position

  • Horizontal
  • Vertical

Mounting Position Effect

  • Tilting up to 90° will cause Zero Shift up to 0.4 kPa

NACE & NIST

  • NACE

NPT Connection

  • 1/2” NPT Female
  • 1/4” NPT Female

Nut & Bolt Material

  • 316L Stainless Steel
  • 660 Stainless Steel
  • B7 Carbon Steel

O-Ring Material

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

Operating Temperature

  • -20° to 80° C (-4° to 176° F)

Output

  • 10.5-30 Vdc at 120 mA DC, Max.
  • 3.6-21.6 mA - Output Range
  • 4-20 mA DC (2-Wire)

Overpressure & Static Pressure Limits

  • psi: 2,300 (MPa: 16, bar: 160) - Max.
  • psi: 3,600 (MPa: 25, bar: 250) - Max.

Power Supply Effect

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

Pressure Range

  • bar: -1 to 160
  • MPa: -0.1 to 16
  • psi: -14.5 to 2,300

Pressure Type

  • Gauge

Process Connection Material

  • ASTM CF-8M
  • Hastelloy C-276
  • Monel

Process Temperature

  • -40° to 120° C (-40° to 248° F)

Response Time

  • 150 milliseconds - for H Capsule
  • 45 milliseconds - Dead Time
  • 90 milliseconds

Screw Material

  • 316 Stainless Steel, Zero-Adjustment & Set Screws

Stability

  • ± 0.1 % of URL for 10-Years

Supply Pressure - Maximum

  • psi: 2,300 (kPa: 15,860, bar: 158.6) - for Capsule B
  • psi: 500 (kPa: 3,447, bar: 34.47) - for Capsule A
  • psi: 72.52 (kPa: 500, bar: 5) - for Capsule H

Supply Voltage

  • 10.5-30 Vdc - for Intrinsically Safe, Typical N or Non-Incendive Typical
  • 10.5-32 Vdc - for Lightning Protector
  • 10.5-42 Vdc - for General Use & Flameproof Typical
  • 16.6 Vdc - Min. Voltage for Digital Communications, BRAIN & HART
  • 24 Vdc - up to 550 ohms Load

Temperature Effect

  • ± (0.04 % of Span + 0.009 % of URL) Per 28° C (50° F) - Capsule A & B Ambient Temperature Effect
  • ± (0.04 % of Span + 0.0125 % of URL) Per 28° C (50° F) - Capsule H Ambient Temperature Effect

Update Time

  • 45 milliseconds - Pressure

Vibration Effect

  • < ± 0.1 % of URL Per IEC 60770-1 with Low Vibration Level (10-60 Hz, 0.15 mm Displacement / 60-500 Hz 2 G)
  • < 0.1 % of URL Per IEC 60770-1 with High Vibration Level (10-60 Hz, 0.21 mm Displacement / 60-2,000 Hz 3 G)

Wetted Materials

  • 316L Stainless Steel - Capsule
  • F316L Stainless Steel - Capsule
  • Hastelloy C-276 - Capsule
  • Monel - Capsule
  • Tantalum - Capsule

Zero Offset

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

Documentation

Data Sheets

Brochure

Certificate

Manual

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