Technical Specifications:

• Product Series: EJA510E / EJA530E Series
• Model Number: 4176-500-32/BU/AK-12/REM
• Measurement Type: Differential Pressure (primary), Gauge Pressure, Absolute Pressure
• Range: 500 kPa (5000 mbar) — calibrated span
• Output Signal: 4–20mA DC (2-wire, HART 7 compatible)
• Accuracy: ±0.04% of calibrated span (EJA510E)
• Static Pressure Effect: ±0.04% of URL per 10 MPa
• Overpressure Protection: 16 MPa (160 bar)
• Operating Temperature: -40°C to +120°C (process), -40°C to +85°C (electronics)
• Process Temperature: -40°C to +120°C (with remote seals: -40°C to +350°C)
• Communication: HART 7, FOUNDATION Fieldbus, Profibus PA, WirelessHART
• Enclosure Rating: IP67 (with terminal cover)
• Explosion Proof: Ex ia IIC T6 Ga, Ex d IIC T6 Gb (certified)
• Housing Material: BU = Hastelloy C-276 (corrosion-resistant alloy)
• Process Connection: AK-12 = 1/2″ NPT female (with remote seal)
• Remote Seal: REM = Remote diaphragm seal with capillary
• Dimensions: Approximately 80 × 80 × 180 mm (W×H×D, without remote seal)
• Weight: Approximately 2.5 kg (transmitter only)

Functional Features:

• High accuracy: ±0.04% of calibrated span (best-in-class)
• Remote seal option for high-temperature, corrosive, or clogging applications
• HART 7, FF, Profibus PA, WirelessHART communication
• Advanced self-diagnostics: Silicone oil level, diaphragm condition, process temperature
• Multi-variable measurement: DP, Flow (with square root extraction), Level, Density
• Static pressure and temperature compensation (built-in sensors)
• Low power consumption: 15.5 mA (typical at 20mA output)
• Fast response: Less than 100 ms (with remote seal: less than 3 seconds)

Performance Parameters:

• Calibrated Span: 500 kPa (5000 mbar)
• URL (Upper Range Limit): 2.5 MPa (25 bar) — typical for this range
• Turndown Ratio: 100:1
• Response Time: < 100 ms (direct mount), < 3 s (with remote seal)
• Process Connection Pressure Rating: 32 MPa (320 bar)
• Ambient Temperature Effect: ±0.02% of span per 10°C
• Vibration Effect: ±0.01% of span (20–2000Hz, 0.5g)
• Power Supply Voltage: 12–42 VDC (2-wire operation)
• Load Resistance: 250Ω to 750Ω (for 4–20mA output)
• MTBF: 223 years (at 25°C ambient, per IEC 61508)

Material Composition:

• Housing (BU): Hastelloy C-276 — excellent resistance to pitting, crevice corrosion, and stress corrosion cracking
• Diaphragm: Hastelloy C-276 or 316L Stainless Steel (with remote seal)
• Process Wetted Parts: Hastelloy C-276, 316L SS, Tantalum (optional)
• Remote Seal Diaphragm: 316L SS, Hastelloy C-276, Monel, Tantalum (selectable)
• Fill Fluid: Silicone oil (standard), Fluorinated fluid (high temp), Inert oil (oxygen service)
• Electronics Housing: Aluminum alloy with epoxy coating
• Cable Gland: 316L Stainless Steel

Structural Features:

• Compact transmitter design with integrated electronics
• LCD display (optional) with push-button navigation
• HART communicator port
• Process connection: 1/2″ NPT female (AK-12)
• Remote seal capillary: 316L SS braided tube, length specified per order
• Terminal cover: IP67 rated, hinged with gasket
• Mounting: Pipe mount or Manifold mount

Working Principle: The EJA510E uses resonant silicon sensor technology. The differential pressure causes deflection of two silicon resonant diaphragms. The deflection changes the resonant frequency of the diaphragms, which is detected by an oscillator circuit and converted to a digital signal. The microprocessor applies temperature compensation (using built-in RTD sensors), static pressure compensation, and performs square root extraction for flow measurement. The 4–20mA output is generated by a D/A converter. The HART protocol superimposes digital communication on the 4–20mA signal. The remote seal transmits process pressure through fill fluid in a capillary tube to the transmitter’s sensing diaphragm, enabling measurement of hot, corrosive, or viscous fluids without direct contact.

Advantage Highlights:

• ±0.04% accuracy — industry-leading performance
• Hastelloy C-276 housing for maximum corrosion resistance in severe chemical processes
• Remote seal capability extends application range to extreme conditions (up to 350°C)
• Multi-protocol communication for maximum flexibility
• 223-year MTBF — extremely high reliability
• Multi-variable output (DP, flow, level, density) from one transmitter
• Fast response time even with remote seals
• Low power consumption for loop-powered operation (15.5 mA)

Applicable Industries:

• Oil & Gas (upstream, midstream, downstream, LNG)
• Chemical & Petrochemical (corrosive processes)
• Power Generation (boiler, turbine, condenser monitoring)
• Pharmaceutical (hygienic applications with remote seals)
• Pulp & Paper (corrosive pulp stock)
• Mining & Minerals (slurry, corrosive leach solutions)
• Water & Wastewater

Model Series:

• EJA510E: Differential Pressure / Gauge Pressure Transmitter
• EJA530E: Absolute Pressure Transmitter
• EJA110E: Gauge Pressure Transmitter (lower accuracy)
• EJA430E: Pressure Transmitter (general purpose)
• Range Options: 500Pa to 14MPa
• Housing Options:
  • BU: Hastelloy C-276
  • SU: 316L Stainless Steel
  • CU: Carbon Steel
• Process Connection Options:
  • AK: 1/2″ NPT
  • AS: 1/2″ NPT with manifold
  • AF: 1/2″ NPT flange (DIN, ANSI, JIS)
  • AA: 1/2″ NPT with remote seal
• Remote Seal Options:
  • REM: Standard remote seal
  • RE1/RE2: High-temperature remote seal
  • RE3: Diaphragm seal with extended capillary

Installation Requirements:

• Process Connection: 1/2″ NPT female (AK-12) — torque to 40 N·m
• Mounting Orientation: Vertical or inclined (avoid horizontal for liquid service)
• Impulse Lines:
  • For gas: Mount transmitter above the tap point
  • For liquid: Mount transmitter below the tap point
  • For steam: Mount transmitter below with condensate pot
• Ambient Temperature: -40°C to +85°C (electronics)
• Vibration: Within IEC 60068-2-6 limits
• Cable Entry: Use Ex d certified cable gland for hazardous areas
• Grounding: Connect transmitter housing to plant ground

Usage Precautions:

• Never exceed the URL (Upper Range Limit) — permanent damage to sensor
• Do not apply pressure to one side only when measuring differential pressure (equalize first)
• Verify remote seal fill fluid is compatible with process fluid
• Purge impulse lines before commissioning (especially for steam/gas)
• Calibrate using HART communicator (BT200) — do not adjust zero/span pots unless necessary
• Check for condensation in impulse lines in cold environments
• Replace remote seal diaphragm if response time degrades
• Firmware updates via HART/Fieldbus only