Yokogawa EJA110A Differential Pressure Transmitter – DPharp Series, HART Protocol

The Yokogawa EJA110A is a high-performance differential pressure transmitter from the DPharp smart transmitter series, engineered for precise DP measurement in process industries. Featuring a digital resonant silicon sensor, the EJA110A offers superior stability, fast response time, and field-proven reliability across harsh environments. With HART communication as standard and optional explosion-proof certifications, it is ideal for critical applications such as flow, level, and pressure monitoring in oil & gas, petrochemical, and power plants. Its universal mounting, customizable flange options, and durable wetted materials ensure broad compatibility and long service life.

Specifications:

– Model: EJA110A
– Series: DPharp Smart Transmitter
– Manufacturer: Yokogawa Electric Corporation
– Country of Manufacture: Japan
– Manufacturing Address: Tokyo 180-8750, Japan
– Serial Number: SG212H2P
– Suffix Code: ES4A / FF7N / 917NN
– Communication Protocol: HART (Highway Addressable Remote Transducer)

– Measurement Type: Differential Pressure (DP)
– Calibrated Range: −100 to +100 kPa (or as specified)
– Reference Accuracy: ±0.04% of span
– Long-Term Stability: ±0.1% of URL per 10 years
– Static Pressure Limit: Up to 16 MPa
– Overpressure Limit: 2× Maximum Working Pressure (MWP)
– Temperature Effect on Accuracy: ±0.1% URL per 28°C
– Response Time: ≤ 150 ms

– Output Signal: 4–20 mA DC (2-wire) with digital HART communication
– Power Supply Voltage: 10.5 to 42 VDC
– Load Resistance: 250–600 ohms at 24 VDC

– Sensor Type: Digital Resonant Silicon Sensor (DPharp)
– Electrical Connection: 1/2" NPT Female
– Housing Material: Aluminum Alloy (standard), SS316 (optional)
– Wetted Materials: Hastelloy C-276 or Stainless Steel diaphragm
– Flanges: 316 SS or optional alloy material
– Mounting: 2" pipe mounting with bracket
– Process Connection: 2" flange center-to-center, ANSI/DIN compatible

– Ambient Temperature Range: -40°C to +85°C (no LCD), -30°C to +80°C (with LCD)
– Process Temperature Range: -40°C to +120°C
– Storage Temperature Range: -40°C to +85°C
– Relative Humidity: 0–100% RH (non-condensing)
– Ingress Protection: IP66 / IP67, NEMA 4X

– Explosion Protection: Explosion-proof and intrinsically safe options
– Certifications: ATEX, IECEx, FM, CSA (per configuration)
– Weight: Approx. 3.9 kg (excluding bracket)

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