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  • 产品名称:EJA115微小流量变送器
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产品介绍:

 

详细介绍

EJA115微小流量变送器

EJA115微小流量变送器

EJA115微小流量变送器内藏孔板,适用于微小流量测量。

产品信息

 

EJA115型微小流量变送器是一款内藏孔板的差压变送器,特别适用于测量微小流量,然后将其转变成4~20mA DC的电流信号输出。内藏孔板有六种内径,范围从0.508mm到6.350mm。孔径的选择结合差压变送器的差压测量量程,就可进行大范围的微小流量测量。

 

EJA系列支持BRAIN、HART和FOUNDATION™现场总线或PROFIBUS PA通信协议。

特性

卓越的性能和稳定性

 

EJA系列采用单晶硅谐振式传感器技术。单晶硅对于压力或温度的变化不存在滞后现象,是非常理想的材料。单晶硅谐振式传感器将过压、温度变化和静压影响降为最低,从而提供无与伦比的长期稳定性。

 

小型轻量设计

 

由于采用ASIC放大器设计使包装变小,以及膜盒构造和法兰的小型化,这款机型的重量降到了原有机型的一半。ASIC设计不仅减少了零件数量,而且提高了放大器的可靠性。

 

现场总线通信能力

 

现场总线是双向数字通信系统,是配置仪表控制系统的革新技术,同时也是前景很好的更新换代产品,用于替换现在现场仪表中广泛使用的标准4~20mA模拟通信。
EJA系列提供两种现场总线模式,FOUNDATION™现场总线低压模式和PROFIBUS PA设备,以实现横河电机和其他供应商的协同工作。软件方面,EJA系列采用两个AI功能块计算差压和静压,从而实现灵活的仪表配置。

规格

 

EJA115微小流量变送器

L膜盒

M膜盒

H膜盒

水当量

0.016~7.2l/min

0.022~23l/min

0.07~33l/min

空气当量

0.44~198Nl/min

0.63~635Nl/min

2~910Nl/min

差压量程

1~10kPa
(2~40inH2O)

2~100kPa
(8~400inH2O)

20~210kPa
(80~840inH2O)

精度

±5%

±5%

±5%

防护等级

IP67,NEMA 4X,和JIS C0920防浸型

防爆规格

FM,CENELEC ATEX,CSA,TIIS,IECEx

输出信号

4~20mA DC或FOUNDATION™现场总线或PROFIBUS PA两线制数字通信

电源

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)

环境温度

-40~85℃ (-40~185℉) (普通型)
-30~80℃ (-22~176℉) (内藏指示器)

过程温度

-40~120℃ (-40~248℉) (普通型)

最大工作压力

3.5MPa
(500psi)

14MPa
(2000psi)

安装

2-inch管安装

接液部件材质

膜盒

SUS316L(膜片: 哈氏合金C-276)

孔板

SUS316

容室法兰

SUS316

外壳

铝合金或SUS316不锈钢(可选)

         

产品选型  

Model

Suffix Codes

Description

EJA115

. . . .

Low Flow transmitter

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) *1

Digital communication (FOUNDATION Fieldbus protocol) *6

Digital communication (PROFIBUS PA protocol) *9

Measurement span (capsule)

L . . . . . . . . . . . . . . . . . .

M . . . . . . . . . . . . . . . . . .

H . . . . . . . . . . . . . . . . . .

1 to 10 kPa {100 to 1000 mmH2O}{4 to 40 inH2O}{10 to 100 mbar}

2 to 100 kPa {200 to 10000 mmH2O}{8 to 400 inH2O}{20 to 1000 mbar}

20 to 210 kPa {2000 to 21000 mmH2O}{80 to 830 inH2O}{200 to 2100 mbar}

Wetted parts material*8

 

S# . . . .. . .

[Body] [Capsule] [Orifice] JIS SCS14A*3 JIS SUS316L *2 JIS SUS316

Process flange rating

6

2 . .

4 . . .

Rc1/2 female

1/2 NPT female

00 . .  . . . .

Always 00

Bolts and nuts material

. . . . . . . . .

A . . . . . . . . . . . . .

B . . . . . . . . . . . . .

[Maximum working pressure] (L capsule) (M, H capsule)

JIS SCM435 3.5 MPa {35 kgf/cm2}   14 MPa {140 kgf/cm2}

JIS SUS630 3.5 MPa {35 kgf/cm2}   14 MPa {140 kgf/cm2}

Installation

 

 

 

 

 

 

6

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

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

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

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

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

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

Vertical impulse piping type, right side high pressure, manifold upside *4

Vertical impulse piping type, right side high pressure, manifold downside *4

Vertical impulse piping type, left side high pressure, manifold upside *4

Vertical impulse piping type, left side high pressure, manifold downside *4

Horizontal impulse piping type, right side high pressure *5

Horizontal impulse piping type, left side high pressure *5

Electrical connection

6

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

 

 

6

D .

E . . . .

N . .

Digital indicator

Digital indicator with the range setting switch *7

(None)

Mounting bracket 6

A . . .

B . . .

J .  .

C .  .

D . . .

K .. . . . . .

N .  .

JIS SECC 2-inch pipe mounting (flat type)

JIS SUS304 2-inch pipe mounting (flat type)

JIS SUS316 2-inch pipe mounting (flat type)

 JIS SECC 2-inch pipe mounting (L type)

JIS SUS304 2-inch pipe mounting (L type)

JIS SUS316 2-inch pipe mounting (L type)

(None)

Optional codes

/□ Optional specification

                     
The ‘6’ marks indicate the most typical selection for each specification. Example: EJA115-DMS400A-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: Refer to GS 01C22T01-00E for HART Protocol version.*2: Diaphragm material is Hastelloy C-276 or ASTM N10276. Other capsule wetted parts materials are JIS SUSF316L, SUS316L or ASTM grade 316L.

*3: Indicates material of cover flange and process connector. Material of manifold is JIS SUSF316. Material of vent plug is JIS SUS316 or ASTM grade 316.

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

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

*6: Refer to GS 01C22T02-00E for Fieldbus communication.

*7: Not applicable for Output signal code F and G.

*8: Users must consider the characteristics of selected wetted parts material and the influence of process fluids. The use of inappropriate materials can result in the leakage of corrosive process fluids and cause injury to personnel and/or damage to  plant facilities. It is also possible that the diaphragm itself can be damaged and that material from the broken diaphragm and the fill fluid can contaminate the user's process fluids. Be very careful with highly corrosive process fluids such as hydrochloric acid, sulfuric acid, hydrogen sulfide, sodium hypochlorite, and high-temperature steam (150°C [302°F] or above). Contact Yokogawa for detailed information of the wetted parts material.

*9: Refer to GS 01C22T03-00E for PROFIBUS PA communication.

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