Yokogawa Draft Range Differential Pressure Transmitter, EJA120E
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EJA120E Differential Pressure Transmitter

Brand: Yokogawa Electric Corporation
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The high performance draft range differential pressure transmitter EJA120E features single crystal silicon resonant sensor and is suitable to measure liquid, gas, or steam flow as well as liquid level, density and pressure.

EJA120E outputs a 4-20 mA DC signal corresponding to the measured differential pressure. 

Other key features include quick response, remote set-up using communications and self-diagnostics. FOUNDATION Fieldbus, PROFIBUS PA and 1 to 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 (0.09% available with /HAC option)
  • ± 0.3% per 1 year Stability
  • 150 ms Response Time
  • Exida and TUV SIL 2/3 Certified
  • Local Parameter Setting (LPS)
  • True Draft Range design

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Specifications

Brand

Accuracy

  • ± (0.15 + 0.02 URL/Span) % of Span (Includes Terminal-based Linearity, Hysteresis & Repeatability)
  • ± (0.15 + 0.03 URL/Span) % of Span - High Accuracy (Includes Terminal-based Linearity, Hysteresis & Repeatability)
  • ± 0.09 % of Span - High Accuracy (Includes Terminal-based Linearity, Hysteresis & Repeatability)
  • ± 0.2 % of Span (Includes Terminal-based Linearity, Hysteresis & Repeatability)

Adjustment

  • Push-Buttons - Integral Indicator

Alarm

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

Ambient Temperature Range

  • -25° to 80° C (-13° to 176° F)

Approvals & Certifications

  • ATEX - Flameproof & Intrinsically Safe
  • CE, N200
  • CSA - Explosion-proof & Intrinsically Safe
  • EMC - EN 61326-1 Class A (Industrial Locations), Table 2, EN 61326-2-3, EN 61326-2-5 (PROFIBUS Only), EN 61010-1
  • FM - Explosion-proof & Intrinsically Safe
  • IECEx - Flameproof & Intrinsically Safe
  • NAMUR NE43
  • PED 2014/68/EU
  • PED 97/23/EC - Sound Engineering Practice

Approvals & Certifications

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

BSP Connection

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

Cable Length

  • 6.56 feet (2 metres)

Cable Material

  • Polyethylene Insulated PVC Sheathed

Communication

  • BRAIN
  • FOUNDATION Fieldbus
  • HART
  • PROFIBUS PA

Consumption

  • 0.96-3 mA - Power Consumption (For Output Signal 1-5 V HART)
  • 27 mW - Power Consumption (For Output Signal 1-5 V HART)

Damping Adjustment

  • 0 to 100 seconds

Diagnostics

  • Alarm (High/Low) for Differential Pressure
  • Configuration Error
  • CPU Failure
  • Hardware Failure
  • Over-Range Error for Differential Pressure & Capsule

Diaphragm Material

  • Hastelloy C-276

Display

  • 10-Segment Signal Characterizer (User-Configurable)
  • 5-Digit Numerical Display
  • 6-Digit Unit Display
  • Bar Graph
  • LCD Display

Distance

  • 2 Kilometers (1.25 Miles)

Drain, Vent Valves & Plug

  • 316 Stainless Steel

Electrical Connectors

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

Electrical Protection

  • Lightning Protection as Per IEC 61000-4-4, IEC 61000-4-5

Enclosure Finish

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

Enclosure, Body Material

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

Environmental Protection

  • IP66
  • IP67
  • NEMA 4X

Fill Material

  • Silicone Oil

Flange Material

  • ASTM CF-8M - Cover Flange

Humidity

  • 0 to 100 % Relative Humidity - Ambient Humidity Limits

Input Impedance

  • 10 kiloohms or more at 2.4 kHz

Length

  • Vent Length: 1.33” (34 mm) Standard
  • Vent Length: 4.6” (119 mm)

Load

  • 0 to 1,290 ohms - for Operation
  • 0.22 μF or Less - Load Capacitance
  • 250 to 600 ohms - 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

Mounting

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

Mounting Position

  • Horizontal
  • Universal Flange
  • Vertical

Mounting Position Effect

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

NACE & NIST

  • NACE MR-0103
  • NACE MR-0175, ISO 15156

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-Rings

Output

  • 0.9-5.4 Vdc
  • 1-5 Vdc (3 or 4-Wire)
  • 3.6-21.6 mA
  • 4-20 mA DC (2-Wire)

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: -4 to 4
  • kPa: -1 to 1
  • mbar: -10 to 10
  • mmWC: -100 to 100
  • psi: -0.145 to 0.145

Pressure Type

  • Differential

Process Connection Material

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

Process Temperature

  • -25° to 80° C (-13° to 176° F)

Response Time

  • 150 milliseconds

Screw Material

  • 316 Stainless Steel - Zero-Adjustment Screw & Set Screws

Stability

  • ± 0.3 % of URL Per Year

Supply Pressure

  • psi: -7.25 to 7.25 (kPa: -50 to 50, bar: -0.50 to 0.50)

Supply Voltage

  • 10.5-30 Vdc - for Intrinsically Safe, Typical N, or Non-Incendive
  • 10.5-32 Vdc - for Lightning Protector
  • 10.5-42 Vdc - for General Use & Flameproof Typical
  • 16.6 Vdc - for Digital Communications, BRAIN & HART
  • 24 Vdc Supply - up to A 550 ohms Load
  • 9-28 Vdc (1-5 V HART) - for General Use & Flameproof Typical

Temperature Effect

  • ± (0.15 % of Span + 0.2 % of URL) Per 28° C (50° F) - Ambient Temperature Effects

Update Time

  • 45 milliseconds - Differential Pressure

Vibration Effect

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

Wetted Materials

  • 316L Stainless Steel - Capsule
  • F316L Stainless Steel

Zero Offset

  • 0.01 % Incremental Resolution of Span

Documentation

Data Sheets

Brochure

Certificate

Document

Manual

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