Yokogawa Eja 438W Diaphragm

• Overview
• Product Description
• Company Profile
• FAQ

Overview

Basic Info.

Model NO.	EJA438W
Measuring Medium	Liquid
Accuracy Grade	0.1G
Pressure range	0.001MPa～35MPa
IP Rating	IP67
Certification	CE
Customized	Customized
Transport Package	Wooden
Trademark	YOKOGAWA
Origin	China
HS Code	90262010
Production Capacity	50000peices/Years

Product Description

Ordering Information

You may have this questions

How do I select the right product?A:Upon receipt of your inquiry, we will provide you with a comprehensive technical document. This will enable you to verify the detailed process parameters and technical specifications required. Based on your specific requirements, we will then recommend the most suitable model.I would like a confirmed model. Can you provide that?A:Certainly. Once you send us the model you require, we will first need to verify the suitability of the model. If necessary, we will provide some more cost-effective optimization suggestions. After confirmation, we can proceed with a formal quotation.
Measurement rang Product Description

The high performance differential pressure transmitter EJA438W features single crystal silicon resonant sensor and is suitable to measure liquid, gas, or steam flow as well as liquid level, density and pressure. EJA438W outputs a 4 to 20 mA DC signal corresponding to the measured diff erential pressure. Its accurate and stable sensor can also measure the static pressure which can be shown on the integral indicator or remotely monitored via BRAIN or HART communications. Other key features include quick response, remote set-up using communications and self-diagnostics. FOUNDATION Fieldbus, PROFIBUS PA and 1 to 5 V DC with HART (Low Power) protocol types are also available. EJA-E series models in their standard confi guration, with the exception of the Fieldbus, PROFIBUS and Low Power types, are certifi ed as complying with SIL 2 for safety requirement.

SPAN AND RANGE LIMITS

Measurement Span/Range		MPa	kgf/cm2
A	Span	0.06 to 3	0.6 to 30
	Range	-0.1 to 3	-1 to 30
B	Span	0.46 to 14	4.6 to 140
	Range	-0.1 to 14	-1 to 14

Model	Sufx Codes										Description
EJA118W	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .										Diferential pressure transmitter
Output signal	-D ............................. -J ............................. -F ............................. -G............................. -Q.............................										4 to 20 mA DC with digital communication (BRAIN protocol) 4 to 20 mA DC with digital communication (HART 5/HART 7 protocol)*1 Digital communication (FOUNDATION Fieldbus protocol, refer to GS 01C31T02-01EN) Digital communication (PROFIBUS PA protocol, refer to GS 01C31T04-01EN) Low Power, 1 to 5 V DC with digital communication (HART 7 protocol)
Measurement span (capsule)		F............................ L............................ M ........................... H............................ V............................									0.5 to 5 kPa (2.0 to 20 inH2O) (For Wetted parts material code S) 0.5 to 10 kPa (2.0 to 40 inH2O) (For Wetted parts material code M, H, T, A, D, B and W) 1 to 100 kPa (4 to 400 inH2O) 5 to 500 kPa (20 to 2000 inH2O) 0.14 to 14 MPa (20 to 2000 psi)
Wetted parts material *2			¨ ........................								Refer to "Wetted Parts Material" Table.
Process connections See the table in the next page for the codes for a diaphragm seal system.				0...................... 1...................... 2...................... 3...................... 4...................... 5......................							without process connector (Rc1/4 female on the cover fanges) with Rc1/4 female process connector with Rc1/2 female process connector with 1/4 NPT female process connector with 1/2 NPT female process connector without process connector (1/4 NPT female on the cover fanges)
Bolts and nuts material					J.................... G.................... C....................						B7 carbon steel 316L SST 660 SST
Installation						-7 ................ -8 ................ -9 ................ -B ................ -U ................					Vertical piping, left side high pressure, and process connection downside Horizontal piping and right side high pressure Horizontal piping and left side high pressure Bottom Process Connection, left side high pressure*3 Universal fange*3
Amplifer housing							1............... 3............... 2...............				Cast aluminum alloy Cast aluminum alloy with corrosion resistance properties*5 ASTM CF-8M stainless steel*6
Electrical connection								0............ 2............ 4............ 5............ 7............ 9............ A............ C............ D............			G1/2 female, one electrical connection without blind plugs 1/2 NPT female, two electrical connections without blind plugs M20 female, two electrical connections without blind plugs G1/2 female, two electrical connections and a blind plug*7 1/2 NPT female, two electrical connections and a blind plug*7 M20 female, two electrical connections and a blind plug*7 G1/2 female, two electrical connections and a SUS316 blind plug 1/2 NPT female, two electrical connections and a SUS316 blind plug M20 female, two electrical connections and a SUS316 blind plug
Integral indicator									D......... E......... N.........		Digital indicator*8 Digital indicator with the range setting switch (push button)*9 None
Mounting bracket										B...... D...... J...... K...... M ..... P...... N......	304 SST 2-inch pipe mounting, fat type (for horizontal piping) 304 SST 2-inch pipe mounting, L type (for vertical piping) 316 SST 2-inch pipe mounting, fat type (for horizontal piping) 316 SST 2-inch pipe mounting, L type (for vertical piping) 316 SST 2-inch pipe mounting (for bottom process connection type) 316 SST 2-inch pipe mounting, position adjustable L type (for vertical piping)*10 None
Optional Codes											¨/ Optional specifcation

Table. Wetted Parts Material

Wetted parts material code	Cover fange and process connector	Capsule	Capsule gasket	Vent/Drain plug
S #	ASTM CF-8M *1*8	Hastelloy C-276 *2 (Diaphragm) F316L SST, 316L SST (Others)	Tefon-coated 316L SST	316 SST
L #	ASTM CF-3M *7*8	Hastelloy C-276 *2 (Diaphragm) F316L SST, 316L SST (Others)	Tefon-coated 316L SST	316L SST
H #	ASTM CF-8M *1*8	Hastelloy C-276 *2	PTFE Tefon	316 SST
M #	ASTM CF-8M *1*8	Monel	PTFE Tefon	316 SST
T	ASTM CF-8M *1*8	Tantalum	PTFE Tefon	316 SST
A #	Hastelloy C-276 equivalent *3	Hastelloy C-276 *2	PTFE Tefon	Hastelloy C-276 *2
D	Hastelloy C-276 equivalent *3	Tantalum	PTFE Tefon	Hastelloy C-276 *2
B #	Monel equivalent *4	Monel	PTFE Tefon	Monel
W #	Super Duplex SST equivalent *5	Hastelloy C-276 *2	PTFE Tefon	Super Duplex SST *6

Company Profile

Cold Valley Intelligent Technology (Shanghai) Co., Ltd. is a member enterprise of Hanshan (Cold Mountain) Intelligent Technology Co; (hereinafter referred to as Hanshan Intelligent Technology Co., Ltd. group) was formally established in Shanghai in 2013;Its founding team are all from top international automation companies; have over 20 years of experience in automation industry; over 20 years of experience in automation engineering; over 10 years of experience in consulting and implementation of digital solutions; aiming at providing quality automation and digitization products and services for global customers; the company's headquarter is located in Shanghai, China;The company has been deeply cultivated in the petrochemical industry for more than 20 years; has in-depth understanding of the automation and digitalization needs of upstream, midstream, and downstream enterprises; provides professional products and solutions based on automation and digitalization and full life cycle services for petroleum, chemicals, electric power, biomedicine, APIs, food and beverage, liquor, metallurgy, and non-ferrous metals.

FAQ