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Yokogawa Gauge Pressure Transmitter, EJA430A

EJA430A Gauge Pressure Transmitter

Brand: Yokogawa Electric Corporation
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The High Performance Gauge Pressure Transmitter Model EJA430A can be used to measure liquid, gas, or steam pressure.

It outputs a 4-20 mA DC signal corresponding to the measured gauge pressure. 

Model EJA430A also features remote setup and monitoring through communications with the BRAIN™ terminal and CENTUM CS™ or µXL™ or HART® 275 host.
Features
  • 0.065% Accuracy
  • 0.1% Stability per 5 years
  • 3,000 psi MWP

Specifications

Brand

Accuracy

  • ± 0.065 % of Span

Alarm

  • Down-Scale: -2.5 %, 3.6 mA DC or Less
  • 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
  • Mill Certificate
  • Pressure Test

Approvals & Certifications

  • CSA Explosion-proof & Intrinsically Safe
  • EMC EN 61326-1 Class A, EN 61326-2-3
  • FM Explosion-proof & Intrinsically Safe
  • IECEx Intrinsically Safe, Typical N & Flameproof Approval
  • NAMUR
  • PED 97/23/EC - Sound Engineering Practice

BSP Connection

  • 1/2" BSPT Female
  • 1/4" BSPT Female

Cable Material

  • Polyethylene Insulated PVC Sheathed

Communication

  • BRAIN
  • FOUNDATION Fieldbus
  • HART
  • PROFIBUS PA

Damping Adjustment

  • 0.1 to 64 seconds in 9 Increments

Diaphragm Material

  • Hastelloy C-276 or ASTM N10276

Distance

  • 2 Kilometers (1.25 Miles)

Drain, Vent Valves & Plug

  • Hastelloy C-276 - Capsule
  • Monel - Capsule
  • SUS316

Electrical Connectors

  • 1/2" NPT Female
  • G 1/2" Female
  • M20 Female
  • PG13.5 Female

Enclosure Finish

  • Epoxy Resin-Baked Coating
  • Polyurethane Paint (Munsell 0.6 GY3.1/2.0)

Enclosure, Body Material

  • Hastelloy C-276 Equivalent
  • Low Copper Cast Aluminum Alloy
  • Monel Equivalent
  • SCS14A - Amplifier Housing

Environmental Protection

  • IP67
  • NEMA 4X

Fill Material

  • Fluorinated Oil
  • Silicone

Flange Material

  • JIS 630 Stainless Steel

Gasket Material

  • Fluorinated Rubber - Process Connector Gasket
  • PTFE Teflon - Process Connector Gasket
  • Teflon-Coated SUS316L

Humidity

  • 5 to 100 % RH at 40° C (104° F) - Ambient Humidity

Hysteresis

  • ± 0.065 % of Span

Input Impedance

  • 10 kΩ or more at 2.4 kHz

Length

  • 1.33" (34 mm) - Standard Vent Length
  • 4.6" (119 mm) - Total Vent Length

Load

  • 0 to 1,335 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

  • Carbon Steel SECC - Mounting Bracket
  • SUS304 - Name Plate & Tag, Mounting Bracket
  • SUS316 - Name Plate & Tag, Mounting Bracket

Maximum System Pressure

  • psi: 2,000 (bar: 138, kPa: 13,790)

Mounting

  • 2" Pipe Mounting Bracket, Flat Typical, L Typical

Mounting Position

  • Horizontal
  • Vertical

Mounting Position Effect

  • Tilting up to 90° will cause Zero Shift up to 0.4 kPa (inH₂O: 1.6)

NACE & NIST

  • NACE MR-0175

NPT Connection

  • 1/2" NPT Female
  • 1/4" NPT Female

Nut & Bolt Material

  • SCM435
  • SUH660
  • SUS630

O-Ring Material

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

Operating Temperature

  • -20° to 80° C (-4° to 176° F)

Output

  • 4-20 mA DC (2-Wire)

Overpressure & Static Pressure Limits

  • psig: 3,000 (MPa: 21, bar: 207) - Max.
  • psig: 645 (MPa: 4.5, bar: 44.47) - Max.

Power Supply Effect

  • ± 0.005 % per Volt (From 21.6 - 32 Vdc, 350 ohms)

Pressure Range

  • bar: -1 to 140
  • kPa: -100 to 14,000
  • psi: -15 to 2,000

Pressure Type

  • Absolute
  • Differential
  • Gauge

Process Temperature

  • -40° to 120° C (-40° to 248° F)

Response Time

  • 0.3 second, Max.

Screw Material

  • 316 Stainless Steel

Seat / Seal Material

  • Sealant: Liquid Silicone Rubber

Stability

  • ± 0.1 % of URL Per 60 Months

Supply Pressure - Maximum

  • psig: 2,000 (MPa: 14, bar: 138) for Capsule B
  • psig: 430 (MPa: 3, bar: 29.65) for Capsule A

Supply Voltage

  • 10.5-30 Vdc - for Intrinsically Safe, Typical N, Non-Incendive or Non-Sparking Typical
  • 10.5-32 Vdc - for Lightning Protector
  • 10.5-42 Vdc - for General Use & Flameproof Typical
  • 24 Vdc - up to 570 ohms Load
  • Minimum 16.4 Vdc - Digital Communications, BRAIN & HART

Temperature Effect

  • ± (0.084 % of Span + 0.017 % of URL) - Ambient Temperature Effects

UNF/UNC Connection

  • 7/16"-20 UNF Female

Update Time

  • 0.125 second

Wetted Materials

  • 316L Stainless Steel - Capsule
  • Tantalum - Capsule

Zero Offset

  • 0.01 % of Span - Incremental Resolution of Span

Documentation

Data Sheets

Manual

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