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Brand: Yokogawa
Yokogawa EJA110E Differential Pressure Transmitter (DPharp Sensor)
Description
Overview
The Yokogawa EJA110E is a differential pressure transmitter from the EJA-E series. It uses Yokogawa’s DPharp single-crystal silicon resonant sensor and is suitable for measuring liquid, gas or steam flow as well as liquid level, density and pressure. The sensor also measures static pressure, which can be shown on the integral indicator or read remotely via BRAIN or HART communication.
The standard output is a two-wire 4–20 mA DC signal with BRAIN or HART communication, linear or square-root programmable. FOUNDATION Fieldbus, PROFIBUS PA and a low-power 1–5 V DC HART version are also available. In their standard configuration (excluding the Fieldbus, PROFIBUS and low-power types), EJA-E transmitters are certified to IEC 61508 for SIL 2 capability as a single transmitter and SIL 3 in dual use.
Key Features
- DPharp single-crystal silicon resonant sensor
- Reference accuracy ±0.055 % of span; ±0.04 % with option /HAC (M, H, V capsules)
- Response time 90 ms (wetted parts code S and L, except F capsule)
- Stability ±0.1 % of URL per 10 years (M, H and V capsules)
- Static pressure measurement available via indicator or communication
- Local parameter setting with the optional integral LCD indicator
- SIL 2 (single) / SIL 3 (dual) capability per IEC 61508
Technical Specifications
| Parameter | Value |
|---|---|
| Model | EJA110E (full model and suffix code defines capsule, materials and options) |
| Measurement spans | F: 0.5–5 kPa; L: 0.5–10 kPa; M: 1–100 kPa; H: 5–500 kPa; V: 0.14–14 MPa |
| Reference accuracy | ±0.055 % of span (±0.04 % with /HAC) |
| Response time | 90 ms (S and L wetted parts); 150 ms for other wetted parts or F capsule |
| Stability | ±0.1 % of URL per 10 years (M, H, V); ±0.2 % of URL per year (F) |
| Output | 4–20 mA DC with BRAIN or HART; 1–5 V DC HART (low power); FOUNDATION Fieldbus; PROFIBUS PA |
| Supply voltage (4–20 mA) | 10.5–42 V DC general use and flameproof; 10.5–30 V DC intrinsically safe |
| Maximum working pressure | 16 MPa (25 MPa with option /HG) |
| Process temperature | -40 to +120 °C |
| Ambient temperature | -40 to +85 °C; -30 to +80 °C with LCD |
| Wetted materials (options) | 316L SST / CF-3M, CF-8M, Hastelloy C-276, Monel, Tantalum (per suffix code) |
| Process connections | Rc1/4, Rc1/2, 1/4 NPT or 1/2 NPT female connectors, per suffix code |
| Housing | Low-copper cast aluminium alloy; CF-8M stainless steel optional |
| Weight | 2.8 kg (M, H, V capsules, S and L wetted parts, without indicator, bracket and connector) |
| Range limits per capsule | F: -5 to 5 kPa; L: -10 to 10 kPa; M: -100 to 100 kPa; H: -500 to 500 kPa; V: -0.5 to 14 MPa |
| Total probable error (M capsule) | ±0.20% of span at 1:1 to 5:1 rangedown |
| Ambient temperature effect per 28 degC (M capsule) | ±(0.07% of span + 0.02% of URL) |
| Static pressure effect per 6.9 MPa | Span: ±0.1% of span; zero (M, H, V capsules): ±0.028% of URL |
| Overpressure effect (M, H, V capsules) | ±0.03% of URL |
| Update period | Differential pressure 45 ms; static pressure 360 ms |
| Output range and failure alarm | 3.6 to 21.6 mA; up-scale 21.6 mA or more (standard), down-scale 3.2 mA or less |
| Damping time constant | 0.00 to 100.00 s, adjustable by software |
| Load (4-20 mA types) | 0 to 1290 Ω for operation; 250 to 600 Ω for digital communication |
| Burst pressure limit | 69 MPa (wetted parts material S, except F capsule); 47 MPa (other materials or F capsule) |
| Degree of protection | IP66/IP67, Type 4X |
| HART revision | HART 5 or HART 7 selectable when ordering |
| Explosion protection option codes | FM FF1/FS1/FU1; ATEX flameproof KF22 and intrinsically safe KS21; CSA CF1/CS1/CU1; IECEx SF22/SU22 |
Applications
- Flow measurement across orifice plates, venturis and other primary elements on hydrocarbon liquids, gas and steam
- Level measurement on pressurised vessels and columns using wet or dry legs
- Density and differential pressure measurement in process and utility services
- SIL-rated loops in oil & gas, petrochemical and power plants
EJA110E Capsule Range Limits and Error Budget
Each capsule has a span window and a wider range within which that span can be placed. The M capsule accepts spans of 1 to 100 kPa anywhere between -100 and +100 kPa, the H capsule 5 to 500 kPa between -500 and +500 kPa, and the V capsule 0.14 to 14 MPa between -0.5 and 14 MPa. The F capsule (5 kPa) is supplied only with wetted material code S, and the L capsule (10 kPa) only with the other material codes. Zero can be fully elevated or suppressed within these limits.
The ±0.055% reference accuracy holds only above a threshold span. For the M capsule that threshold is 5 kPa; below it the error becomes ±(0.005 + 0.0025 × URL/span)% of span. The thresholds are 2 kPa for the F capsule, 100 kPa for H and 1.4 MPa for V. With square-root output, accuracy at 50% output and above equals the reference accuracy.
Installed performance is governed by the influence terms. For the M capsule the ambient temperature effect per 28 °C is ±(0.07% of span + 0.02% of URL), the static pressure effect per 6.9 MPa is ±0.1% of span on span and ±0.028% of URL on zero, and the overpressure effect is ±0.03% of URL. Yokogawa combines these into a total probable error of ±0.20% of span from 1:1 to 5:1 rangedown, and a total accuracy of ±0.17% of span at 1:1.
EJA110E Output Behaviour, Functional Safety and Hazardous Area Options
The 4-20 mA output has a working range of 3.6 to 21.6 mA. On a CPU or hardware failure it drives up-scale to 21.6 mA or more as standard, or down-scale to 3.2 mA or less, and NAMUR NE43 limits of 3.8 to 20.5 mA are available with options C2 and C3. The differential pressure value is refreshed every 45 ms and the static pressure every 360 ms. Supply is 10.5 to 42 V DC, with a minimum of 16.6 V for digital communication, and a 10-segment signal characterizer is included.
Standard EJA-E transmitters with 4-20 mA BRAIN or HART output are certified to IEC 61508:2010 for SIL 2 in single use and SIL 3 in dual use; the Fieldbus, PROFIBUS PA and low-power types are excluded. Hazardous-area options include ATEX flameproof (KF22, Ex db IIC T6…T4 Gb), ATEX intrinsic safety (KS21, Ex ia IIC T4 Ga), FM and CSA explosionproof and intrinsically safe versions, and the IECEx equivalents (SF22, SU22). Wetted material codes S, L, H, M, A, B and W conform to NACE MR0175/ISO 15156.
Why Seven Star LLC
Seven Star LLC supplies Yokogawa EJA-E series transmitters across Oman and the GCC. Before quoting, we check the full model and suffix code, or the nameplate of the existing transmitter, so the capsule, wetted materials, output and approvals match your application.
Yokogawa EJA110E FAQ
What is the Yokogawa EJA110E?
A differential pressure transmitter from the EJA-E series using the DPharp single-crystal silicon resonant sensor, for liquid, gas or steam flow, level, density and pressure.
What accuracy and response time does the EJA110E have?
Reference accuracy of ±0.055% of span (±0.04% with option /HAC on M, H and V capsules) and response time of 90 ms for S and L wetted parts.
What are the measurement spans?
F: 0.5–5 kPa; L: 0.5–10 kPa; M: 1–100 kPa; H: 5–500 kPa; V: 0.14–14 MPa. Maximum working pressure is 16 MPa (25 MPa with option /HG).
What outputs are available?
4–20 mA DC with BRAIN or HART as standard, plus 1–5 V DC HART low power, FOUNDATION Fieldbus and PROFIBUS PA versions.
Is the EJA110E SIL certified?
In standard configuration it is certified to IEC 61508 for SIL 2 capability as a single transmitter and SIL 3 in dual use (excluding the Fieldbus, PROFIBUS and low-power types).
Request a Quote for Yokogawa EJA110E Differential Pressure Transmitter (DPharp Sensor)
Send your request through our inquiry form with the full model code (or nameplate photo), quantity, process medium, required range, process temperature and pressure, wetted material, process connection, output protocol and hazardous-area approval. Seven Star LLC will confirm the configuration and quote lead time.
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Datasheets & Documents
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About brand
Yokogawa instruments are ordered by model and suffix code, a string such as EJX110A followed by option characters that fix span, materials and approvals. Founded in 1915 and headquartered in Tokyo, Yokogawa makes field instruments, process analyzers and the CENTUM control system used in refineries, gas plants and power stations.
Seven Star LLC is an independent supplier listing Yokogawa pressure transmitters, flowmeters, temperature transmitters, analyzers and CENTUM I/O modules for users in Oman and the GCC.
Yokogawa product families on this page
Pressure is covered by the DPharp transmitters: the EJX110A differential pressure transmitter, the EJX530A and EJA530E in-line gauge pressure transmitters and the EJX910A multivariable transmitter. The ADMAG AXW is the magnetic flowmeter line, and the YTA610 and YTA710 are temperature transmitters. Analyzers include the FLXA402 four-wire and FLXA21 two-wire liquid analyzers, the TDLS8000 tunable diode laser gas analyzer and spare parts for zirconia oxygen analyzers, such as the E7042UD cell assembly kit for the ZR22 detector. Control hardware includes CENTUM VP I/O modules like the ADV161 digital input module and the YS1700 programmable indicating controller.
Where Yokogawa instruments are used
EJA and EJX transmitters measure pressure, level and DP flow throughout oil and gas, chemical and power plants. Zirconia oxygen analyzers and the TDLS8000 are used for combustion control on boilers and fired heaters. FLXA analyzers monitor pH, conductivity and dissolved oxygen in water and process streams, and CENTUM modules are bought as replacements for running control systems.
Ordering Yokogawa parts: what we need
Send the model and suffix code and the serial number from the nameplate, and for CENTUM modules the style code as well. For transmitters without a code we need span, output protocol, wetted materials, process connection, housing and the approval required. For oxygen analyzer spare parts give the detector and converter models, for example ZR22G and ZR402G, and the part number.
Browse Yokogawa products by category: PLC & I/O Cards, Flowmeters, Pressure Instrumentation, Automation Accessories, Temperature Instrumentation.
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Frequently Asked Questions
Q1: Is EJA110E suitable for steam and high-dynamic flow?
Yes. Steam flow is among the listed applications (liquid, gas or steam flow). Response time is 90 ms with wetted parts code S and L, and 150 ms for other wetted parts or the F capsule.
Q2: Which communications are supported?
Standard 4–20 mA + HART; FOUNDATION Fieldbus and PROFIBUS PA available by option code.
Q3: Can it display static pressure locally?
Yes—the local indicator can show static pressure; it’s also available over HART.
Q4: Does it support SIL?
EJA110E has SIL-capable options depending on model code/approval. Share your SRS and we’ll confirm.
How do I request a quotation for Yokogawa EJA110E Differential Pressure Transmitter (DPharp Sensor)?
Send the model number, required quantity and delivery location through the quote request form or by email to Seven Star LLC. The sales team replies with availability, lead time and commercial terms for your Oman or GCC project.
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