Yokogawa Low Flow Transmitter, EJX115A
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EJX115A Low Flow Transmitter

Brand: Yokogawa Electric Corporation
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The low flow transmitter EJX115A is a differential pressure transmitter assembled with an integral orifice and excellent for very low flow measurement. It outputs a 4-20 mA DC signal corresponding to the measured flow.

Its highly accurate and stable sensor can also measure the static pressure which can be shown on the integral indicator or remotely monitored via BRAIN or HART communications.

Other key features include quick response, remote set-up using communications, diagnostics and optional status output for pressure high/low alarm.

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 by TÜV as complying with SIL 2 for safety requirement.
Features
  • Accurately: ±0.04% Square Root Output Accuracy
  • Quickly: 90 ms Response Time
  • Reliably: ±0.1% per 15 years Stability (DP)

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Specifications

Brand

Accuracy

  • ± (0.002 + 0.0019 URL/Span) % of Span (Includes Terminal-based Linearity, Hysteresis, & Repeatability) - for M Capsule
  • ± (0.005 + 0.0049 URL/Span) % of Span (Includes Terminal-based Linearity, Hysteresis, & Repeatability) - for H Capsule
  • ± (0.015 + 0.01 URL/Span) % of Span (Includes Terminal-based Linearity, Hysteresis, & Repeatability) - for F Capsule
  • ± 0.04 % of Span (Includes Terminal-based Linearity, Hysteresis, & Repeatability) - for F, M & H Capsule

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 2 Capability for Single Transmitter Use, SIL 3 Capability for Dual Transmitter Use, IEC 61508: 2000
  • TÜV (Technischer Uberwachungsverein)

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 (For Fieldbus)
  • FM Explosion-proof & Intrinsically Safe
  • IECEx Intrinsically Safe & Flameproof
  • NAMUR NE43
  • PED 2014/68/EU, 97/23/EC

BSP Connection

  • 1/2” BSPT Female

Burst Pressure

  • psi: 10,000 (MPa: 69, bar: 690) - for Measurement Span (Capsule) M & H
  • psi: 6,800 (MPa: 47, bar: 470) - for Measurement Span (Capsule) F

Cable Material

  • Polyethylene Insulated PVC Sheathed

Communication

  • BRAIN
  • FOUNDATION Fieldbus
  • HART
  • PROFIBUS PA

Current

  • 6,000 A - Max.

Damping Adjustment

  • 0 to 100 seconds

Dead Time

  • 45 milliseconds (Nominal)

Diagnostics

  • Configuration Error - Self Diagnostics
  • CPU Failure - Self Diagnostics
  • Hardware Failure - Self Diagnostics
  • Heat Trace Monitoring - Advanced Diagnostics
  • Impulse Line Blockage Detection - Advanced Diagnostics
  • Over-Range Error for Differential Pressure, Satic Pressure & Capsule Temperature - Self Diagnostics

Diaphragm Material

  • Hastelloy C-276 - Capsule Diaphragm

Differential Pressure

  • psi: 0 to 30.46 (kPa: 0 to 210, bar: 0 to 2.1)

Display

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

Distance

  • 0 to 2 Kilometers (1.25 Miles) - Communication Distance

Drain, Vent Valves & Plug

  • 316 Stainless Steel

Electrical Connectors

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

Electrical Protection

  • Lightning Protection

Electrical Rating

  • 10.5-30 Vdc, 120 mA DC, Max.

Enclosure Finish

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

Enclosure, Body Material

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

Environmental Protection

  • IP66
  • IP67
  • NEMA 4X

Fill Material

  • Fluorinated Oil - Fill Fluid
  • Silicone - Fill Fluid

Flange Material

  • ASTM CF-8M - Cover Flange

Flow Rate

  • 0.004 to 1.32 gpm (0.016 to 5 LPM) to Water
  • 0.005 to 6.076 gpm (0.022 to 23 LPM) to Water
  • 0.02 to 8.72 gpm (0.07 to 33 LPM) to Water
  • 0.44 to 140 NL/min to Air - for Capsule F
  • 0.63 to 635 Nl/min to Air - for Capsule M
  • 2 to 910 Nl/min to Air - for Capsule H

Function

  • Linear
  • Square Root Programmable

Gasket Material

  • Fluorinated Rubber - Process Connector Gasket
  • PTFE - Orifice 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

  • 1.33” (34 mm) - Standard Long Vent
  • 4.6” (119 mm) - Total Long Vent

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 - Mounting Bracket, Name Plate & Tag & Spacer
  • F316 Stainless Steel - Manifold
  • SCS 13A - Mounting Bracket
  • SCS14A - Mounting Bracket

Mounting

  • 2” (50.8 mm) 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 MR-0103

NPT Connection

  • 1/2” NPT Female

Nut & Bolt Material

  • 316L Stainless Steel - for Cover Flange, Process Connector & Manifold
  • B7 Carbon Steel - for Cover Flange, Process Connector

O-Ring Material

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

Operating Temperature

  • -20° to 80° C (-4° to 176° F)

Orifice Material

  • 316 Stainless Steel

Output

  • 3.6-21.6 mA
  • 4-20 mA DC (2-Wire)

Output Format

  • Transistor Output

Overpressure Effect

  • ± 0.03 % of URL up to psi: 2,300 (MPa: 16, bar: 160) - for M & H Capsules
  • ± 0.06 % of URL - for M & H Capsules

Power Supply Effect

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

Pressure Range

  • bar: 0 to 2.1
  • kPa: 0 to 210
  • mmWC: 0 to 21,000
  • psi: 0 to 30.46

Pressure Type

  • Absolute
  • Differential
  • Gauge

Process Connection Material

  • ASTM CF-8M

Process Temperature

  • -40° to 120° C (-40° to 248° F)

Response Time

  • 150 milliseconds - F Capsule
  • 90 milliseconds - M & H Capsules

Screw Material

  • 316 Stainless Steel

Span - Minimum

  • psi: 73 (MPa: 0.5, bar: 5)

Stability

  • ± 0.1 % of URL Per 10-Years (All Normal Operating Condition, Including Overpressure Effects) - for M & H Capsules

Static Pressure Effect

  • ± 0.02 % of URL Per psi: 1,000 (MPa: 6.9, bar: 69) for M Capsule - Effect on Zero
  • ± 0.028 % of URL Per psi: 1,000 (MPa: 6.9, bar: 69) for H Capsule - Effect on Zero
  • ± 0.075 % of Span Per psi: 1,000 (MPa: 6.9, bar: 69) for F, M, & H Capsules - Span Effects
  • ± 0.1 % of URL Per psi: 1,000 (MPa: 6.9, bar: 69) for F Capsule - Effect on Zero

Supply Pressure - Maximum

  • psi: 2,300 (MPa: 16, bar: 160) - for All Capsules

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, up to 550 ohms Load

Temperature Effect

  • ± (0.04 % of Span + 0.009 % of URL) Per 28° C (50° F) for M Capsule - Ambient Temperature Effects
  • ± (0.04 % of Span + 0.0125 % of URL) Per 28° C (50° F) for H Capsule - Ambient Temperature Effects
  • ± (0.055 % of Span + 0.18 % of URL) Per 28° C (50° F) for F Capsule - Ambient Temperature Effects

Update Time

  • 360 milliseconds - Static Pressure
  • 45 milliseconds - Differential Pressure

Vibration Effect

  • < ± 0.1 % of URL when Tested Per the Requirements of IEC 60770-1 Field with General Application or Pipeline with Low Vibration Level (10-60 Hz 0.15 mm Displacement / 60-500 Hz 2 G) - for Amplifier Housing ASTM CF-8M Stainless Steel
  • < 0.1 % of URL when Tested Per the Requirements of IEC 60770-1 Field or Pipeline with High Vibration Level (10-60 Hz, 0.21 mm Displacement / 60-2000 Hz 3 G) - for Amplifier Housing Cast Aluminum Alloy & Cast Aluminum Alloy with Corrosion Resistance Properti

Wetted Materials

  • 316L Stainless Steel
  • F316L Stainless Steel

Zero Offset

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

Documentation

Brochure

Certificate

Datasheet

Engineering Tools

General Specifications

Manual

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