Yokogawa Eja438W and Eja438n Diaphragm Sealed Gauge Pressure Transmitters

• Customization: Available
• Type: Gauge Pressure Transmitters
• Structure Type: Remote Diaphragm Seals
• Model NO.: EJA438W
• Measuring Medium: Liquid
• Accuracy Grade: ±0.2%
• Pressure range: -0.1 to 7 MPa
• IP Rating: IP67
• Certification: CE
• Customized: Customized
• Item Name: Eja438W Diaphragm Sealed Gauge Pressure Transmitte
• Model: Eja438W
• Type Name: Diaphragm Sealed Gauge Pressure Transmitters
• 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 EJA438W and EJA438N Diaphragm Sealed Gauge Pressure Transmitters

Diaphragm seal is used to prevent process medium from entering directly into the pressure-sensing assembly of the pressure transmitter. It is connected to the transmitter using capillary filled with fill fluid.
Models EJA438W and EJA438N Diaphragm Sealed Gauge Pressure Transmitters can be used to measure liquid, gas or steam pressure. They output a 4 to 20 mA DC signal corresponding to the measured
pressure.
The models EJA438W and EJA438N feature remote setup and monitoring through communications with the model BT200/100 BRAIN TERMINAL, CENTUM CS/ XL system etc.

Features

The EJA-A series is Yokogawa's most successful pressure transmitter line. First released in 1991, it continues to offer high performance and high reliability for any application. With an installed base of over 4-1/2 million EJA-A transmitters worldwide, it has a proven track record that makes it a true industry workhorse.

The EJA438 is a Gauge Pressure Transmitter with a Remote Diaphragm seal attached.

It is available with a Flush Type Remote Seal (EJA438W) or an Extended Type Remote Seal (EJA438N).

EJA438 features include:

0.2% Accuracy
700 ms Response Time
External Zero Adjust

Benefits

High - precision Measurement: It adopts a monocrystalline silicon resonant sensor, with an accuracy as high as ±0.075%, which can provide more accurate pressure measurement results, meeting the needs of high - precision measurement in various industrial scenarios.

Excellent Over - pressure Resistance: It has excellent over - pressure characteristics. After 100,000 consecutive one - way over - pressure tests, the influence is ≤±0.03%, which can ensure the stability of the measurement performance under harsh conditions and is not easily affected by abnormal pressure.

Good Stability: Monocrystalline silicon has no hysteresis phenomenon for pressure or temperature changes. The EJA438W uses this material sensor to minimize the influence of over - pressure, temperature changes, and static pressure, thus providing excellent long - term stability and reducing the frequency of instrument calibration and maintenance

Specification

Item	valve
Type	Diaphragm-sealed gauge/absolute pressure transmitter (with "W" suffix for wet leg applications)
Measuring Principle	Monocrystalline silicon resonant sensor technology
Measurable Media	Liquids, gases, vapors, corrosive/high-viscosity/crystallizable media (isolated by diaphragm seal)
Accuracy	±0.075% of span (gauge type), ±0.1% of span (absolute type)
Stability	±0.2% URL/10 years
Pressure Range	- Gauge pressure: -0.1 to 3 MPa, 0.46 to 14 MPa (varies by model) - Absolute pressure: 0 to 20 MPa (specific ranges depend on diaphragm material)
Overpressure Resistance	Withstands 100,000 cycles of one-way overpressure with ≤±0.03% impact on accuracy
Response Time	90 ms (standard), adjustable up to 1600 ms
Output Signal	- 4–20 mA DC with HART 5/7, BRAIN protocol - FF fieldbus - PROFIBUS PA
Power Supply	- 10.5–42 V DC (HART: 16.4–42 V DC) - FF fieldbus: 9–32 V DC - PROFIBUS PA: 9–32 V DC
Communication Protocols	HART 5/7, BRAIN, FOUNDATION fieldbus, PROFIBUS PA
Temperature Range	- Operating: -40°C to +120°C - Storage: -40°C to +150°C
Temperature Effect	±0.2% of span/55°C (compensated within -20°C to +85°C)
Protection Level	IP66/IP67, NEMA 4X
Explosion Protection	Ex d (flameproof), Ex ia (intrinsic safety), Ex nA (non-incendive), certified for ATEX, FM, CSA, IECEx, etc.
Process Connections	- Flange types: ANSI, JIS, DIN, GB (with diaphragm seal) - Wet leg design (for "W" type): Liquid-filled impulse lines for media isolation
Diaphragm Materials	316L stainless steel, Hastelloy C-276, Monel, Tantalum (optional PTFE coating)
Self-Diagnosis Functions	40+ functions (CPU/hardware failure, configuration error, pressure/temperature over-limit alarms, real-time reverse check)
Display	Optional built-in LCD (5-digit numeric + 6-digit unit, shows pressure values, alarm codes, bar charts; independent circuit from output signal)

Packing & Delivery

Packing:Original Carton boxes

Packaging: Original cardboard box or Wodeen packaging by Express(DHL/UPS/Fedex/Aramex/EMS/SF)

Company Profile

Company 

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.

We can offer Rosemount, Emerson,Endress+Hauser, ABBb, Yokogawa, Siemens, Fisherr,Koso, Samson, Abzil, Neles, Flowserver,UE, Masoneilon etc, Brands. If you need anything please feel free to contact me.

Below are our core competitive advantages:

1. Advanced Technology & Precision Engineering

2. Robust Quality Control & Certifications

3. Customization & Versatility

4. Innovation & R&D Excellence

5. Efficient Production & Global Service

6. Sustainable & User-Centric Design

FAQ

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.

Q:Who we are
A: We focus on the instrument and transmitters industry, mainly selling world-famous instrument and transmitters brands.

Q:Our advantage
A:We have been in the industry for many years, and we have strong supply chain relationships and large inventories, with great price advantages. 
I will try my best to give you the best price,prove that we are sincere. 

Q:Can't find the model you need?
A:We have only shown some models,If the model you need is not found here,please contact us

Q:What else can you get product from our store?
A:We have a professional and efficient technical team. We will serve you 7X24 hours. If you have any questions about our products, please do not hesitate to contact us soon