Yokogawa Eja118W Eja118e Eja118W Eja118A Eja118n Diaphragm Seal Type Differential Pressure Transmitter

• Customization: Available
• Type: Differential Pressure Transmitter
• Structure Type: Remote Diaphragm Seals
• Model NO.: EJA118W
• Measuring Medium: Liquid
• Accuracy Grade: ±0.2%
• Pressure range: -500-500kpa
• IP Rating: IP67
• Certification: CE
• Customized: Customized
• Item Name: Eja118W Dp Transmitter Remote Diaphragm Seals
• Model: Eja118W
• Type Name: Differential Pressure Transmitter
• MOQ: 1PC
• Warranty: 1 Year
• Accuracy of Span: 0.2 % of Span
• Temperature Limits: −40 to 60°c (−40 to 140°f)
• Pressure Limit: 2.7 Kpa ABS{20 Mmhg ABS}
• Supply Voltage: 10.5 to 42 V DC
• Housing: Low Copper Cast-Aluminum Alloy with Polyurethane
• Name Plate and Tag: JIS SUS304 or SUS316
• Integral Indicator: LCD Digital Indicator
• Output Signal: 4 to 20 Ma DC, 2-Wire System
• Mounting: Transmitter; 2-Inch Pipe Diaphragm Seals;Flange
• Power Supply Effect: ±0.005 %/V (21.6 to 32 V DC, 350 Ω)
• Transport Package: Carton Boxes
• Specification: 70/42/26cm
• Trademark: Yokogawa
• Origin: Japan
• HS Code: 9026900000
• Production Capacity: 100/Month
• Package Size: 71.00cm * 42.00cm * 26.00cm
• Package Gross Weight: 25.000kg

Product Description

Product Description

Yokogawa EJA118W Diaphragm Seal Differential Pressure Transmitter - Comprehensive Product Introduction
1. Product Overview
The Yokogawa EJA118W is a high-performance diaphragm seal differential pressure (DP) transmitter designed for industrial process control. It prevents corrosive, viscous, or high-temperature process media from directly contacting the sensor, using isolated diaphragm seals connected via capillary tubes filled with fill fluid. This design enables accurate measurement of flow, level, density, and pressure in liquids, gases, or steam, converting physical values into 4-20 mA DC signals with digital communication capabilities . It supports multiple protocols: BRAIN, HART, FOUNDATION Fieldbus, and PROFIBUS PA, ensuring compatibility with diverse control systems .

Detailed Photos

2. Core Technology: Single-Crystal Silicon Resonant Sensor
The EJA118W leverages Yokogawa's proprietary Silicon Resonant Sensor technology:
No Hysteresis: Single-crystal silicon exhibits minimal lag in response to pressure/temperature changes, providing high stability and repeatability 
Temperature/Static Pressure Immunity: Advanced compensation algorithms reduce drift to ≤±0.03% even after 100,000 pressure cycles .
High Accuracy: ±0.2% of span for differential pressure measurements, with a turndown ratio of 40:1 (M capsule) or 20:1 (H capsule) .
3. Key Features and Advantages
a) Robust Safety and Reliability
SIL 2 Certification: Compliant with IEC 61508 for functional safety, making it suitable for critical applications .
Explosion Protection: Options for flameproof, intrinsic safety (IS), and non-sparking constructions (e.g., ATEX, TIIS) .
Environmental Resilience:
IP67/NEMA 4X ingress protection.
Operating temperature: -40°C to +85°C (ambient), process temperatures up to +300°C depending on seal configuration .
b) Flexible Configuration
Seal Diaphragm Materials: SUS316L, Hastelloy C-276, Tantalum, or Titanium for corrosive media 
Flange Standards: JIS, ANSI, DIN, GB, and JPI flanges (e.g., ANSI 150-600) 
Fill Fluids: Silicone oil (general/high-temp), ethylene glycol (cryogenic), or inert oils for oxygen-sensitive processes 
c) Advanced Diagnostics and Communication
Digital Overlay: HART/BRAIN protocols enable remote parameter adjustment, calibration, and diagnostics via handheld communicators (e.g., Yokogawa FieldMate) 
Self-Diagnostics: Monitors sensor health, capillary integrity, and electronics, triggering alarms for over-range or hardware faults 
d) Installation Versatility
Mounting Options: 2-inch pipe or direct flange mounting.
Capillary Lengths: Standard 1m or 2m, customizable for remote seal placement 

Product Parameters

Parameter	Specification
Measurement Range	M Capsule: 2.5-100 kPa; H Capsule: 25-500 kPa
Output Signal	4-20 mA DC + HART/BRAIN digital signal
Supply Voltage	10.5-42 V DC (standard); 10.5-28 V DC (intrinsic safety)
Static Pressure	Up to 16 MPa (ANSI 600 flange)
Response Time	≤90 ms (adjustable damping: 0.3-100 sec)
Long-Term Stability	≤±0.1% URL/year

5. Applications
The EJA118W excels in challenging environments:
Flow Measurement: Orifice/venturi-based flow with bidirectional capability .
Level/Density: Sealed tanks with corrosives (e.g., sulfuric acid, molten sulfur) .
High-Temperature Processes: Steam lines, reactors, and distillation columns 
Sanitary/Cryogenic: Food processing (ethanol fill fluid) or LNG storage (ethylene glycol fill fluid) 
6. Configuration and Calibration
a) Model Code Structure
Example: EJA118W-DMSJ1DA-AA01-92NN decodes as:
D: 4-20 mA + HART
MS: SUS316L diaphragm/seal
J1: JIS 10K flange
DA: 80 mm flange/SUS316 bolts
AA: Silicone oil (-10-250°C)
01: 1m capillary 
b) Calibration Modes
Zero Adjustment: Via external screw or HART communicator .
Sensor Trimming: Field calibration for span/zero using applied pressure references .
7. Maintenance and Troubleshooting
Fill Fluid Monitoring: Detect leaks or vaporization by checking capillary response time.
Diaphragm Inspection: Bulging/scarring indicates overpressure or corrosion .
Error Codes: Common HART alerts include "Sensor Error" (hardware fault) or "Over Range" (check process limits) .
8. Certifications and Compliance
International Standards: CE, PED 2014/68/EU, RoHS .
Safety Certifications: SIL 2 (IEC 61508), ATEX, FM, TIIS .
Conclusion
The Yokogawa EJA118W combines unmatched precision from single-crystal silicon sensors with robust isolation technology, making it ideal for aggressive media, extreme temperatures, and safety-critical systems. Its modular design supports global flange standards and communication protocols, while diagnostics simplify predictive maintenance. For industries from petrochemicals to pharmaceuticals, the EJA118W delivers reliability where conventional transmitters fail.

Company Profile

KeRui (weifang) Automation Equipment Co., Ltd. specializes in industrial automation instrument development, production and sales,technical services, and supporting equipment supply of specialized companies. The main products are flow meters, level meters,temperature meters, pressure meters, electrical meters, thermal intelligent meters, programmable controllers (PLC), DCS distributed control systems, and eight series of more than 1,000 specifications. Its products and technologies are widely used in electric power, metallurgy, petrochemicals, environmental protection, plastics, food, printing, tobacco, textile, dyeing, and other fields.
 

Packaging & Shipping

The packaging and transportation of instrumentation in global trade hinges on a synergy of advanced materials, rigorous testing, regulatory compliance, and smart logistics. By adopting hybrid structural designs, leveraging real-time monitoring technologies, and prioritizing sustainability, exporters can ensure the safe, efficient, and cost-effective delivery of precision instruments. Continuous innovation in materials science and IoT integration will further redefine industry standards, enhancing resilience in an increasingly interconnected market.

FAQ

Q: How long will you give me the reply?
A: We will reply to you as soon as we see the information.
Q: What is the delivery time?
A: Our delivery time is within 3-7 days after we get your payment;
for large qty mass orders, the time should be confirmed again for you.
Q: How about your package?
A: Do not worry about the package, we have rich experience in packing, and all our package is wooden case package.
Q: How about the payment terms?
A: You can choose T/T.
Q: Do you provide samples?
A: Yes, we have materials in stock to help you to get the samples as soon as we can.
Q: What is the MOQ?
A:1PC.
Q: Can I get a lower price if I order large quantities?
A: Yes, cheaper prices with more bigger size orders.