Yokogawa Flange Mounted Differential Pressure Transmitter, EJA220A
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EJA220A Flange Mounted Pressure Transmitter

Brand: Yokogawa Electric Corporation
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The high performance flange mounted differential pressure transmitter models EJA210A and 220A can be used to measure levels of densities of solidifying or precipitating liquids. 

Both output a 4 to 20 mA DC signal corresponding to the measured differential pressure. 

Models EJA210A and 220A also feature remote setup and monitoring through communications with the BRAIN™ terminal and CENTUM CS™ or µXL™ or HART® 275 host.
Features
  • 0.075% Accuracy
  • 0.1% Stability per 5 years
  • Flush Flange Process Connection (EJA210A)
  • Extended Flange Process Connection (EJA220A)

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Specifications

Brand

Accuracy

  • ± 0.075 % of Span (Including the Effects of Zero-based Linearity, Hysteresis, & Repeatability)

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
  • IEC Ex Intrinsically Safe, Typical N & Flameproof Approval
  • NAMUR NE43
  • PED 97/23/EC

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

  • 316L Stainless Steel
  • Hastelloy C-276

Display

  • LCD Display

Drain, Vent Valves & Plug

  • 316 Stainless Steel
  • ASTM Grade 316

Electrical Connectors

  • 1/2” NPT Female
  • DIN 19213
  • G 1/2” Female
  • M20 Female
  • PG13.5 Female

Enclosure Finish

  • Polyurethane Paint (Munsell 0.6 GY3.1/2.0)

Enclosure, Body Material

  • 316 Stainless Steel
  • ASTM CF-8M Stainless Steel
  • Low Copper Cast Aluminum Alloy
  • SCS14A Stainless Steel

Environmental Protection

  • IP67
  • NEMA 4X

Fill Material

  • Fluorinated Oil
  • Silicone

Flange Material

  • 304 Stainless Steel
  • 316 Stainless Steel
  • S25C
  • SCS14A - Cover Flange

Flange Size - 3” (DN 80)

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

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

Gasket Material

  • PTFE Teflon - Process Connector Gasket
  • Teflon-Coated SUS316L - Capsule Gasket

Humidity

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

Input Impedance

  • 10 kiloohms or more at 2.4 kHz

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

  • Name Plate & Tag: 304 Stainless Steel
  • Name Plate & Tag: 316 Stainless Steel

NACE & NIST

  • NACE

NPT Connection

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

Nut & Bolt Material

  • 630 Stainless Steel
  • 660 Stainless Steel
  • SCM435

O-Ring Material

  • Buna-N
  • Fluororubber

Operating Temperature

  • -20° to 80° C (-4° to 176° F)

Output

  • 4-20 mA DC - 2-Wire

Power Supply Effect

  • ± 0.005 % Per Volt (21.6-32 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

Process Connection Material

  • SCS14A

Process Temperature

  • -40° to 120° C (-40° to 248° F)

Response Time

  • 0.5 second - Max.

Span & Zero Effect

  • ± 0.007 % of URL Per psi: 100 (kPa: 690, bar: 6.9)

Stability

  • ± 0.1 % of URL Per 5-Years

Static Pressure Effect

  • ± [0.028 % of Span + 0.007 % of URL] Per psi: 100 (kPa: 690, bar: 6.9)

Supply Pressure

  • psia: 0.38 (kPa: 2.7, bar: 0.027)

Supply Voltage

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

Temperature Effect

  • ± [0.14 % of Span + 0.028 % of URL] Per 28° C (50° F) - Capsule H Ambient Temperature Effect
  • ± [0.224 % of Span + 0.056 % of URL] Per 28° C (50° F) - Capsule M Ambient Temperature Effect

UNF/UNC Connection

  • 7/16”-20 UNF Female

Update Time

  • 0.125 second or Less

Wetted Materials

  • 316 Stainless Steel - Pipe

Zero Offset

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

Documentation

Data Sheets

Manual

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