EJA120A差壓變送器高性能的微差壓變送器產(chǎn)品信息EJA120A型高性能的微差壓變送器用于測量微小差壓，然后將其轉(zhuǎn)變成4~20mA DC的電

 西安西弘自動化設(shè)備有限公司，位于全國最大的儀表生產(chǎn)基地之一的陜西省西安市，是一家從事熱電偶、壓力傳感器、壓力變送器、壓力儀器儀表、稱重傳感器、稱重變送器、稱重儀器儀表、壓力控制器、壓力開關(guān)、溫度傳感器、溫度變送器、溫度儀器儀表等產(chǎn)品的研發(fā)、生產(chǎn)、銷售的廠家。壓力、稱重、溫度等自動化測量控制系統(tǒng)的設(shè)計、安裝、調(diào)試服務(wù)。產(chǎn)品涵蓋電力（火電、水電、核電）、石油、化工、紡織、冶金、機械、國防、科研、醫(yī)藥、食品等行業(yè)。產(chǎn)品已由國內(nèi)市場拓展至港臺及歐洲市場，壓力傳感器、壓力變送器產(chǎn)品性能已逐步同國際市場接軌，完全可替換國外同類型產(chǎn)品。 

 EJA120A差壓變送器

高性能的微差壓變送器

產(chǎn)品信息





EJA120A型高性能的微差壓變送器用于測量微小差壓，然后將其轉(zhuǎn)變成4~20mA DC的電流信號輸出。



EJA系列支持BRAIN、HART和FOUNDATION™現(xiàn)場總線或PROFIBUS PA通信協(xié)議。





特性

-

的性能和穩(wěn)定性



EJA系列采用單晶硅諧振式傳感器技術(shù)。單晶硅對于壓力或溫度的變化不存在滯后現(xiàn)象，是非常理想的材料。單晶硅諧振式傳感器將過壓、溫度變化和靜壓影響降為zui低，從而提供的長期穩(wěn)定性。



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小型輕量設(shè)計



由于采用ASIC放大器設(shè)計使包裝變小，以及膜盒構(gòu)造和法蘭的小型化，這款機型的重量降到了原有機型的一半。ASIC設(shè)計不僅減少了零件數(shù)量，而且提高了放大器的可靠性。



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現(xiàn)場總線通信能力



現(xiàn)場總線是雙向數(shù)字通信系統(tǒng)，是配置儀表控制系統(tǒng)的革新技術(shù)，同時也是前景很好的更新?lián)Q代產(chǎn)品，用于替換現(xiàn)在現(xiàn)場儀表中廣泛使用的標準4~20mA模擬通信。
EJA系列提供兩種現(xiàn)場總線模式，F(xiàn)OUNDATION™現(xiàn)場總線低壓模式和PROFIBUS PA設(shè)備，以實現(xiàn)橫河電機和其他供應(yīng)商的協(xié)同工作。軟件方面，EJA系列采用兩個AI功能塊計算差壓和靜壓，從而實現(xiàn)靈活的儀表配置。

規(guī)格



EJA120A微差壓變送器

E膜盒

測量范圍

-1~1kPa(-4~4inH2O)

測量量程

0.1~1kPa(0.4~4inH2O)

精度

±0.2%

防護等級

IP67，NEMA 4X，和JIS C0920防浸型

防爆規(guī)格

FM，CENELEC ATEX，CSA，IECEx

輸出信號

4~20mA DC或FOUNDATION™現(xiàn)場總線或PROFIBUS PA兩線制數(shù)字通信

電源

BRAIN和HART:10.5~42V DC (本安型: 10.5~30V DC)
Fieldbus:9~32V DC (本安Entity模式9~24V DC，本安FISCO模式9~17.5V DC)

環(huán)境溫度

-25~80℃(-13~176℉)

過程溫度

-25~80℃(-13~176℉)

zui大工作壓力

50kPa (7.25psi)

安裝

2-inch管安裝

接液部件材質(zhì)

膜盒

SUS316L(膜片: 哈氏合金C-276)

容室法蘭

SUS316

外殼

鋁合金或SUS316不銹鋼(可選)

型號選型

Model

Suffix Codes

Description

EJA120A



Differential pressure transmitter (for draft application)

Output Signal

-D . . . . . . . . . . . .

-E . . . . . . . . . .

-F . . . . . . . . . . .

-G . . . . . . . . . . .

4 to 20 mA DC with digital communication (BRAIN protocol)

4 to 20 mA DC with digital communication (HART protocol, refer to GS 01C22T01-00E)

Digital communication (FOUNDATION Fieldbus protocol, refer to GS 01C22T02-00E)

Digital communication (PROFIBUS PA protocol, refer to GS 01C22T03-00E)

Measurement span (capsule)

E . .

0.1 to 1 kPa {10 to 100 mmH2O} {0.4 to 4 inH2O} {1 to 10 mbar}

Wetted parts material *6



S# . . . .

[Body] [Capsule] [Vent plug]

SCS14A *1 SUS316L *2 SUS316 *7

Process connections















0 . . . . . . . . . . . . .

1 . . . . .

2 . . . .

3 . . . .

4 . . . .

5 . . . . . . . . . . . . .

without process connector (Rc1/4 female on the cover flanges)

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 flanges)

Bolts and nuts material





A .. . . .

B .. . . .

C . . . . .

[Maximum working pressure]

SCM435 50 kPa {0.5 kgf/cm2}

SUS630 50 kPa {0.5 kgf/cm2}

SUH660 50 kPa {0.5 kgf/cm2}

Installation















-2 . . . . . . . . . .

-3 . . . . . . . . . .

-6 . . . . . . . . . .

-7 . . . . . . . . . .

-8 . . . . . . . . . .

-9 . . . . . . . . . .

Vertical impulse piping type, right side high pressure, process connector upside *3

Vertical impulse piping type, right side high pressure, process connector downside *3

Vertical impulse piping type, left side high pressure, process connector upside *3

Vertical impulse piping type, left side high pressure, process connector downside *3

Horizontal impulse piping type, right side high pressure *4

Horizontal impulse piping type, left side high pressure *4

Electrical connection



0 . .

2 . . . . . .

3 . . . . . . .

4 . . . . . . .

5 . . . . . . .

7 . . . . . . .

8 . . . . . .

9 . . . . . .

A . . . . . .

C . . . . . .

D . . . . . .

G1/2 female, one electrical connection

1/2 NPT female, two electrical connections without blind plug

Pg 13.5 female, two electrical connections without blind plug

M20 female, two electrical connections without blind plug

G1/2 female, two electrical connections and a blind plug

1/2 NPT female, two electrical connections and a blind plug

Pg 13.5 female, two electrical connections and a blind plug

M20 female, two electrical connections and a blind plug

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

Digital indicator with the range setting switch *5

(None)

Mounting bracket

A . .

B . .

J .. .

C .. .

D . .

K . .

N . .

SECC Carbon steel 2-inch pipe mounting (flat type)

SUS304 2-inch pipe mounting (flat type)

SUS316 2-inch pipe mounting (flat type)

SECC Carbon steel 2-inch pipe mounting (L type)

SUS304 2-inch pipe mounting (L type)

SUS316 2-inch pipe mounting (L type)

(None)

Optional codes

/□ Optional specification

The ‘6’ marks indicate the most typical selection for each specification. Example: EJA120A-DES-92NA/□
The ‘#’marks indicate the construction materials conform to NACE material recommendations per MR01-75. For the use of SUS316 material, there may be certain limitations for pressure and temperature. Please refer to NACE standards for details.
*1: Indicates cover flange and process connector material.

*2: Diaphragm material is Hastelloy C-276 or ASTM N10276. Other capsule wetted parts materials are SUSF316L, SUS316L or ASTM grade 316L.

*3: If necessary, specify Mounting bracket code C, D or K.

*4: If necessary, specify Mounting bracket code A, B or J.
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