Yokogawa Differential Pressure Transmitter, EJA110A
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EJA110A Differential Pressure Transmitter

Brand: Yokogawa Electric Corporation
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The high performance differential pressure transmitter model EJA110A can be used to measure liquid, gas, or steam flow as well as liquid level, density and pressure. 

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

Model EJA110A 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
  • 2,300 psi MWP

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Specifications

Brand

Accuracy

  • ± 0.065 % 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

  • 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
  • NAMUR NE43
  • PED 97/23/EC

Approvals & Certifications

  • Leak Test
  • Mill Certificate
  • Pressure Test

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
  • 0.2 to 64 seconds

Diaphragm Material

  • ASTM N10276
  • Hastelloy C-276

Display

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

Distance

  • 0 to 2 Kilometers (1.25 Miles) - Communication Distance when Using CEV Polyethylene-Insulated PVC-Sheathed Cables

Drain, Vent Valves & Plug

  • Hastelloy C-276
  • Monel
  • SUS316 - Vent Plug, Name Plate & Tag

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

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

Environmental Protection

  • IP67
  • NEMA 4X

Fill Material

  • Fluorinated Oil
  • Silicone Oil

Gasket Material

  • Fluorinated Rubber - Process Connector Gasket
  • PTFE Teflon - Process Connector Gasket, Capsule 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

Length

  • 1.33” (34 mm) - Vent

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

  • SUS304 - Name Plate & Tag

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

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-Ring

Operating Temperature

  • -20° to 80° C (-4° to 176° F) - Oil-Prohibited Use

Output

  • 3.8-20.5 mA
  • 4-20 mA DC

Overpressure Effect

  • ± 0.03 % of URL Per psi: 2,300 (MPa: 16, bar: 160) - M, H, V Capsules

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 14,000
  • mbar: -5,000 to 140,000
  • mmWC: -10,000 to 10,000
  • psi: -72.52 to 2,031

Pressure Type

  • Absolute
  • Differential
  • Gauge

Process Temperature

  • -40° to 120° C (-40° to 248° F)

Response Time

  • 0.5 second, Max.
  • 120 milliseconds

Span & Zero Effect

  • ± [0.02 % of Span + 0.052 % of URL] Per psi: 500 (MPa: 3.4, bar: 34) - Zero Effect for Capsule L
  • ± 0.028 % of URL Per psi: 1,000 (MPa: 6.9, bar: 69) - Zero Effect for Capsules M, H, V

Stability

  • ± 0.1 % of URL Per 5-Years - Capsules M, H, V
  • ± 0.2 % of URL Per 1-year - Capsule L

Static Pressure Effect

  • ± [0.07 % of Span + 0.052 % of URL] Per psi: 500 (MPa: 3.4, bar: 34) - Capsule L
  • ± [0.1 % of Span + 0.028 % of URL] Per psi: 1,000 (MPa: 6.9, bar: 69) - Capsules M, H, V

Supply Pressure - Maximum

  • psi: 2,300 (MPa: 16, bar: 160)

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
  • 16.4 Vdc Min. - for Digital Communications, BRAIN & HART
  • 24 Vdc, up to A 570 ohms Load

Temperature Effect

  • ± [0.07 % of Span + 0.015 % of URL] Per 28° C (50° F) - Capsule H Ambient Temperature Effect
  • ± [0.07 % of Span + 0.02 % of URL] Per 28° C (50° F) - Capsule M Ambient Temperature Effect
  • ± [0.07 % of Span + 0.03 % of URL] Per 28° C (50° F) - Capsule V Ambient Temperature Effect
  • ± [0.08 % of Span + 0.09 % of URL] Per 28° C (50° F) - Capsule L Ambient Temperature Effect

UNF/UNC Connection

  • 7/16”-20 UNF Female

Update Time

  • 0.125 second

Wetted Materials

  • Hastelloy C-276
  • Monel
  • SUS316L
  • Tantalum

Zero Offset

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

Documentation

Data Sheets

Document

Manual

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