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EJA440A高静压压力变送器
EJA440A高静压压力变送器
EJA440A型高性能的压力变送器可用于测量液体、气体或蒸汽的压力。
产品信息
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EJA440A型高性能的压力变送器可用于测量液体、气体或蒸汽的压力，然后将其转变成4～20mA DC的电流信号输出。
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EJA系列支持BRAIN、HART和FOUNDATION™现场总线或PROFIBUS PA通信协议。
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特性
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卓越的性能和稳定性
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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。
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小型轻量设计
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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。
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现场总线通信能力
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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。
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规格
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EJA440A压力变送器
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C膜盒
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D膜盒
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测量范围
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-0.1~32MPa
(-15~4500psi)
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-0.1~50MPa
(-15~7200psi)
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测量量程
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5~32MPa
(720~4500psi)
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5~50MPa
(720~7200psi)
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精度
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±0.12%
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±0.12%
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防护等级
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IP67，NEMA 4X,和JIS C0920防浸型
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防爆规格
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FM，CENELEC ATEX，CSA，IECEx
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输出信号
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4~20mA DC或FOUNDATION™现场总线或PROFIBUS PA两线制数字通信
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电源
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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)
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环境温度
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-40~85℃ (-40~185℃) (普通型)
-30~80℃ (-22~176℃) (内藏指示器)
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过程温度
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-40~120℃ (-40~248℃) (普通型)
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最大过压
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48MPa (6750psig)
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60MPa (8500psig)
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安装
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2-inch管安装
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接液部件材质
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膜盒
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SUS316L (膜片: 哈氏合金C-276)
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容室法兰
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SUS316
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外壳
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铝合金或SUS316不锈钢(可选)
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■ 产品选型
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产品系列
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型号代码
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描述
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EJA440A
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. . . . .
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Gauge pressure transmitter
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输出信号
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-D . . .
-E . . . . . . . . . . . . .
-F . . .. .
-G . . . .
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4-20mA 信号输出（BRAIN协议）
4-20mA 信号输出(HART协议),参照GS 01C22T0100E
(基础现场总线协议，参照GS 01C22T02-00E）
数字信号 (PROFIBUS PA协议，参照GS 01C22T03-00E)
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测量范围（压力）
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C . . . . . . . . . . . .
D . . . . . . . . . . .
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5 to 32 MPa {50 to 320 kgf/cm2} {720 to 4500 psi} {50 to 320 bar}
5 to 50 MPa {50 to 500 kgf/cm2} {720 to 7200 psi} {50 to 500 bar}
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Wetted parts
material *8
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S# . . .
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[壳体] [Capsule] [孔塞]
SUS316 *1 SUS316L *2 SUS316 *9
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Process connection *10
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0 . . .
1 . . . .
2 . . . .
3 . . . .
4 . . .
5 . . .
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无过程连接 (Rc 1/4 female on the cover flanges)
with Rc 1/4 电气过程连接
with Rc 1/2 电气过程连接
with 1/4 NPT 电气过程连接 *6
with 1/2 NPT 电气过程连接 *6
无过程连接 (1/4 NPT female on the cover flanges)
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螺栓和螺母的材料l
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A . . .
B . . . .
C . . .
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[Maximum working pressure]
[C Capsule] [D Capsule]
SCM435 32 MPa {320 kgf/cm2} 50 MPa {500 kgf/cm2}
SUS630 32 MPa {320 kgf/cm2} 50 MPa {500 kgf/cm2}
SUH660 *5 32 MPa {320 kgf/cm2}
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Installation
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-2 . . . . . . . .
-3 . . . . . . . .
-6 . . . . . . .. .
-7 . . . . . . . .
-8 . . . . . . . .
-9 . . . . . . . .
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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
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电气连接
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0 . .. .
2 . . . .
3 . . . .
4 . .. .
5 . .. .
7 . .. .
8 . .. .
9 . . .
A . ..
C . ..
D . .. .
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G1/2 female, one 电气连接
1/2 NPT female, two 电气连接s without blind plug
Pg 13.5 female, two 电气连接s without blind plug
M20 female, two 电气连接s without blind plug
G1/2 female, two 电气连接s and a blind plug
1/2 NPT female, two 电气连接s and a blind plug
Pg 13.5 female, two 电气连接s and a blind plug
M20 female, two 电气连接s and a blind plug
G1/2 female, two 电气连接s and a SUS316 blind plug
1/2 NPT female, two 电气连接s and a SUS316 blind plug
M20 female, two 电气连接s and a SUS316 blind plug
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显示面板
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D . . .
E .. . .
N .
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. Digital indicator
与范围设定开关数字指示器*7
(None)
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Mounting bracket
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A . .
B . . .
J . .
C . .
D .. .
K . . .
N . . .
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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)
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Optional codes
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/□ 可选范围
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The ‘6’ marks indicate the most typical selection for each specification. Example: EJA440A-DCS5A-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 material of cover flange and process connector;
Capsule code C: cover flange; SUSF316, process connector; SCS14A. Capsule code D: cover flange; SUSF316, process connector; SUS316.
*2: Diaphragm material is 哈氏合金 C-276 or ASTM N10276. Indicated is other capsule wetted parts material.
*3: If necessary, specify 安装支架code C, D or K.
*4: If necessary, specify 安装支架code A, B or J.
*5: Not applicable for Capsule code D.
*6: Lower limit of ambient and process temperature is —15C° for Capsule code C.
*7: Not applicable for 输出信号 code F and G.
*8: Users must consider the characteristics of selected 部件材料and the influence of process fluids. The use of inappropri- ate 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: SUS316 or ASTM grade 316.
*10: When not using a process connector, directly use 1/4 NPT or Rc 1/4 male piping to connect to the cover flange, except for the case of C capsule with 1/4 NPT connection.
■ 可选范围S(For Explosion Protected type “Q”)
For FOUNDATION Fieldbus explosion protected type, see GS 01C22T02-00E.
For PROFIBUS PA explosion protected type, see GS 01C22T03-00E.
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Item
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描述
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Code
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Factory Mutual (FM)
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FM Explosionproof Approval *1 *3 *4
Applicable standard: FM3600, FM3615, FM3810, ANSI/NEMA250 Explosionproof for Class I, Division 1, Groups B, C and D
Dust-ignitionproof for Class II/III, Division 1, Groups E, F and G Hazardous (classified) locations, indoors and outdoors (NEMA 4X) Temperature class: T6
Amb. Temp.: –40 to 60°C (–40 to 140°F)
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FF1
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FM Intrinsically safe Approval *1 *3 *4
Applicable standard: FM3600, FM3610, FM3611, FM3810, ANSI/NEMA250 Intrinsically Safe for Class I, Division 1, Groups A, B, C & D, Class II, Division 1, Groups E, F & G and Class III, Division 1 Hazardous Locations.
Nonincendive for Class I, Division 2, Groups A, B, C & D, Class II, Division. 2, Groups E, F & G, and Class III, Division 1 Hazardous Locations.
Enclosure: “NEMA 4X”, Temp. Class: T4, Amb. Temp.: –40 to 60°C (–40 to 140°F)
Intrinsically Safe Apparatus Parameters
[Groups A, B, C, D, E, F and G]
Vmax=30 V, Imax=165 mA, Pmax=0.9 W, Ci=22.5 nF, Li=730 µH
[Groups C, D, E, F and G]
Vmax=30 V, Imax=225 mA, Pmax=0.9 W, Ci=22.5 nF, Li=730 µH
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FS1
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Combined FF1 and FS1 *1 *3 *4
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FU1
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ATEX
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ATEX Flameproof Approval *2 *4
Applicable standard: EN 60079-0, EN 60079-1 Certificate: KEMA 02ATEX2148
II 2G Ex d IIC T4, T5, T6
Amb. Temp.: T5; –40 to 80°C ( –40 to 176°F), T4 and T6; –40 to 75°C ( –40 to 167°F) Max. process Temp.: T4; 120°C (248°F), T5; 100°C (212°F), T6; 85°C (185°F)
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KF21
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ATEX Intrinsically safe Approval *2 *3 *4
Applicable standard: EN50014, EN50020, EN50284 Certificate: KEMA 02ATEX1030X
II 1G EEx ia IIC T4, Amb. Temp.: –40 to 60°C (–40 to 140°F) Ui=30 V, Ii=165 mA, Pi=0.9 W, Ci=22.5 nF, Li=730 µH
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KS2
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*1: Applicable for 电气连接 code 2, 7 and C (1/2 NPT female).
*2: Applicable for 电气连接 code 2, 4, 7, 9, C and D (1/2 NPT and M20 female).
*3: Applicable for 输出信号 code D and E.
*4: Lower limit of ambient temperature is –15˚C (5˚F) when /HE is specified.
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