Yokogawa EJA110A Differential Pressure Transmitter – DPharp Series

The Yokogawa EJA110A Differential Pressure Transmitter, part of the renowned DPharp series, is engineered for high-accuracy process measurement applications in a wide range of industries. Designed and manufactured in Japan, this smart transmitter utilizes a digital resonant silicon sensor to ensure exceptional reference accuracy of ±0.04% of span and long-term stability of ±0.1% of URL over 10 years. The EJA110A supports a differential pressure measurement range calibrated typically up to 180 kPa, with an overpressure limit up to 25 MPa and static pressure rating of 16 MPa, depending on the selected configuration. It offers output in 4–20 mA DC with HART protocol, and optionally supports FOUNDATION Fieldbus or BRAIN communications. The unit is constructed with robust materials such as Hastelloy C-276 or 316L SS diaphragms and 316 SS flanges, and supports a wide ambient and process temperature range. Designed for easy field installation, it includes 1/2" NPT conduit connections and a universal pipe mounting bracket. With IP66/IP67-rated housing, and explosion-proof certifications, the EJA110A is ideal for critical process automation tasks in harsh environments.

Specifications:

– Instrument Type: Differential Pressure Transmitter
– Model: EJA110A
– Series: DPharp
– Manufacturer: Yokogawa Electric Corporation
– Country of Origin: Japan
– Sensor Technology: Digital Resonant Silicon Sensor
– Measured Variable: Differential Pressure (ΔP)
– Calibration Range: 0–180 kPa (customizable)
– Reference Accuracy: ±0.04% of span
– Long-Term Stability: ±0.1% of URL over 10 years
– Overpressure Limit: Up to 25 MPa
– Static Pressure Rating: Up to 16 MPa
– Output Signal: 4–20 mA DC (2-wire) with HART
– Communication Protocols: HART (standard), FOUNDATION Fieldbus, BRAIN (optional)
– Power Supply Voltage: 10.5–42 VDC (HART: 17–42 VDC)
– Load Resistance: 250–600 ohms @ 24 VDC
– Response Time: ≤150 ms
– Electrical Connections: 1/2" NPT (female conduit)
– Mounting: Universal bracket for 2” pipe
– Mounting Position Effect: Negligible after zeroing
– Diaphragm Material: Hastelloy C-276 or 316L SS
– Flange Material: 316 Stainless Steel
– Fill Fluid: Silicone oil (standard), Fluorinated oil (optional)
– Ambient Temperature Range: -40°C to +85°C (without display)
– Process Temperature Range: -40°C to +120°C
– Storage Temperature Range: -40°C to +85°C
– Humidity Range: 0–100% RH (non-condensing)
– Enclosure Rating: IP66/IP67
– Explosion Protection: FM, CSA, ATEX, IECEx certified (varies by configuration)
– Tag Format: EJA110A/KF21/D1 or similar (customizable)

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