Yokogawa Diaphragm Sealed Differential Pressure Transmitter, EJA118Y
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EJA118Y Diaphragm Sealed Differential Pressure Transmitter

Brand: Yokogawa Electric Corporation

Diaphragm seals are used to prevent process medium form entering directly into the pressure-sensing assembly of the differential pressure transmitter, they are connected to the transmitter using capillaries filled with fill fluid. 

Model EJA118W, EJA118N and EJA118Y Diaphragm Sealed Differential Pressure Transmitters can be used to measure liquid, gas, or steam flow, as well as liquid level, density, and pressure.

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

The transmitters also feature remote setup and monitoring through communications with the model BT200/100 BRAIN TERMINAL, CENTUM CS/XL system etc.
Features
  • 0.2% Accuracy
  • 700 ms Response Time
  • External Zero Adjustment

Specifications

Brand

Accuracy

  • ± 0.2 %

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 60° C (-22° to 140° F) - with Integral Indicator
  • -40° to 60° C (-40° to 140° F) - General Use Typical

Approvals & Certifications

  • CSA - Explosion-proof & Intrinsically Safe Approval
  • EMC EN 61326-1 Class A, Table 2, EN 61326-2-3
  • FM - Explosion-proof & Intrinsically Safe Approval
  • IECEx - Intrinsically Safe, Typical N & Flameproof Approval
  • NAMUR NE43 Compliant
  • PED 97/23/EC
  • TIIS - Flameproof & Intrinsically Safe Approval

Approvals & Certifications

  • Leak Test
  • Mill Certificate
  • Pressure Test

Cable Material

  • Polyethylene Insulated PVC Sheathed

Capillary Length

  • 3.3 to 32.8 feet (1 to 10 metres)

Communication

  • BRAIN
  • FOUNDATION Fieldbus
  • HART
  • PROFIBUS PA

Damping Adjustment

  • 0.2 to 64 seconds - Set in 9 Increments

Diaphragm Material

  • JIS 316L Stainless Steel

Display

  • LCD Display

Electrical Connectors

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

Electrical Protection

  • Lightning Protection

Enclosure Finish

  • Deep Sea Moss Green (Munsell 0.6 GY3.1/2.0)
  • Epoxy Resin-Baked Coating
  • Polyurethan Resin Baked Finish

Enclosure, Body Material

  • Cast Aluminum Alloy - Amplifier Housing
  • JIS SCS14A Stainless Steel - Amplifier Housing

Environmental Protection

  • IP67
  • NEMA 4X

Fill Material

  • Ethylene Glycol
  • Fluorinated Oil
  • Silicone Oil

Flange Material

  • JIS S25C
  • JIS SCA14A - Cover Flange
  • JIS SCM435 - Cover Flange Bolts Material
  • JIS SUS304
  • JIS SUS316
  • JIS SUS630 - Cover Flange Bolts Material

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

Fluid Specific Gravity

  • 0.94 to 1.09 - Silicone Oil
  • 1.09 - Ethylene Glycol
  • 1.90 to 1.92 - Fluorinated Oil

Humidity

  • 5 to 100 % RH (At 40° C) - Ambient Humidity

Input Impedance

  • 10 kΩ or more at 2.4 kHz

Load

  • 0.22 µF or Less - Load Capacitance
  • 250 to 600 ohms - Digital Communication
  • 3.3 MH or Less - Load Inductance

Materials of Construction

  • JIS 304 Stainless Steel - Tag Plate
  • JIS 316 Stainless Steel - Tag Plate

Mounting

  • 2" (50.8 mm) Pipe - Transmitter
  • Flange Mount - Diaphragm Seals

NACE & NIST

  • NACE

O-Ring Material

  • Fluororubber

Operating Temperature

  • Maximum

Output

  • 4-20 mA DC, 2-Wire System with Digital Communication

Power Supply Effect

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

Pressure Range

  • bar: -5 to 5
  • inH₂O: -2,000 to 2,000
  • kPa: -500 to 500
  • mmH₂O: -10,000 to 10,000
  • psi: -72.52 to 72.52

Pressure Type

  • Absolute
  • Differential

Process Temperature

  • -50° to 300° C (-58° to 572° F)

Response Time

  • 0.5 second, Max.

Screw Material

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

Static Pressure Effect

  • Total Shift: ± 0.14 % / 0.98 MPa (10 kgf/cm²)
  • Zero Shift: ± 0.1 % / 0.98 MPa (10 kgf/cm²)

Supply Pressure

  • psia: 0.38 (kPa: 2.7, bar: 0.027)

Supply Voltage

  • 10.5-28 Vdc - for TIIS Intrinsically Safe Typical
  • 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
  • 16.4-42 Vdc - Communication Line

Temperature Effect

  • ± 1.4 %/50° C (122° F) - Total Shift Ambient Temperature Effect

Update Time

  • 0.125 second

Wetted Materials

  • JIS 304 Stainless Steel PVC Sheathed - Protection Tube
  • JIS 316 Stainless Steel - Pipe, Capillary Tube

Zero Offset

  • 0.01 % of Span - Continuously Adjustable Resolution

Documentation

Data Sheets

Manual

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