• Model-EJA120E-Differential-Pressure-Transmitter
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 to 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 and PROFIBUS PA protocol types are also available.

All EJA-E series models in their standard configuration, with the exception of the Fieldbus and PROFIBUS types, are certified as complying with SIL 2 for safety requirement.

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Item #
Item #
Model
Output Signal
Measurement Span (Capsule)
Wetted Parts Material 1
Process Connections (High Side)
Process Connections (Low Side)
Bolts and Nuts Material
  • C: 660 SST
  • G: 316L SST
  • J: B7 carbon steel
Installation
Amplifier Housing
  • 1: Cast aluminum alloy
  • 2: ASTM CF-8M stainless steel
  • 3: Cast aluminum alloy with corrosion resistance properties
Electrical Connection
Integral Indicator
  • D: Digital indicator
  • E: Digital indicator with the range setting switch (push button)
  • N: None
Mounting Bracket
Select Approval
  • CF1: Canadian Standards Association (CSA) - Explosionproof Approval
  • CS1: Canadian Standards Association (CSA) - Intrinsically safe Approval
  • CU1: Canadian Standards Association (CSA) - Combined CF1 and CS1
  • FF1: FM Explosionproof Approval
  • FS1: FM Intrinsically safe Approval
  • FU1: FM Combined FF1 and FS1
  • KF22: ATEX - Flameproof Approval
  • KS21: ATEX - Intrinsically safe Approval
  • KU22: ATEX - Combined KF22, KS21 and ATEX Intrinsically safe Ex ic
  • None
  • SF2: IECEx Scheme - Flameproof Approval
  • SU21: IECEx Intrinsically safe and Flameproof Approval
Painting - Color Change (Optional)
  • None
  • P: Painting: Color change (Amplifier cover only)
  • PR: Painting: Color change (Amplifier cover and terminal cover, Munsell 7.5 R4/14)
Oil-prohibited Use (Optional)
  • K1: Oil-prohibited Use - Degrease cleansing treatment
  • K5: Oil-prohibited Use with dehydrating treatment - Degrease cleansing and dehydrating treatment
  • None
Calibration Unit (Optional)
  • D1: P calibration (psi unit)
  • D3: bar calibration (bar unit)
  • D4: M calibration (kgf/cm2 unit)
  • None
Output Limits and Failure Operation (Optional)
  • C1: Output limits and failure operation - Failure alarm down-scale: Output status at CPU failure and hardware error is -5%, 3.2mA DC or less
  • C2: Output limits and failure operation - NAMUR NE43 Compliant (Failure alarm down-scale: Output status at CPU failure and hardware error is -5%, 3.2 mA DC or less)
  • C3: Output limits and failure operation - NAMUR NE43 Compliant (Failure alarm up-scale: Output status at CPU failure and hardware error is 110%, 21.6 mA or more)
  • None
Optional Specification
  • A: Lightning protector
  • CB: Data configuration at factory - Data configuration for BRAIN communication type (Software damping)
  • HAC: High accuracy
  • HC: 316 SST Exterior Parts (316 SST zero-adjustment screw and setscrews)
  • HE: Fluoro-rubber O-ring (All O-rings of amplifier housing. Lower limit of ambient temperature: –15°C (5°F))
  • M01: Material certificate - Cover flange
  • N4: Wired tag plate (316 SST tag plate wired onto transmitter)
  • X2: Painting - Coating change (Anti-corrosion coating)
  • 1 Be very careful with highly corrosive process fluids such as hydrochloric acid, sulfuric acid, hydrogen sulfide, sodium hypochlorite, and high-temperature steam (150°C [302°F] or above). Contact Yokogawa for detailed information of the wetted parts material
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