EJA440A高静压压力变送器怎么样?
描述图片1
Supply Voltage “�”
10.5 to 42 V DC for general use and flameproof type
10.5 to 32 V DC for lightning protector (Optional
code /A)
10.5 to 30 V DC for intrinsically safe, Type n,
nonincendive, or non-sparking type
Minimum voltage limited at 16.4 V DC for digital
communications, BRAIN and HART
Load (Output signal code D and E)
0 to 1335 for operation
250 to 600 for digital communication
EMC Conformity Standards “�” ,
EN61326-1 Class A, Table2 (For use in industrial
locations)
EN61326-2-3
European Pressure Equipment Directive 97/23/EC
Sound Engineering Practice
With option code /PE3
Category III, Module H, Type of Equipment: Pressure
Accessory-Vessel, Type of Fluid: Liquid and Gas,
Group of Fluid: 1 and 2
Safety Requirement Standards
EN61010-1
? Altitude of installation site: Max. 2,000 m above sea level
? Installation category: I
? Pollution degree: 2
? Indoor/Outdoor use
Communication Requirements “�”
BRAIN
Communication Distance
Up to 2 km (1.25 miles) when using CEV polyethylene-insulated
PVC-sheathed cables. Communication
distance varies depending on type of cable used.
Load Capacitance
0.22 �F or less (see note)
Load Inductance
3.3 mH or less (see note)
Spacing from power line
15 cm or more.
Input Impedance of communicating device
10 k or more at 2.4 kHz.
Note : For general-use and Flameproof type.
For Intrinsically safe type, please refer to
‘OPTIONAL SPECIFICATIONS.’
小型轻量设计
由于采用ASIC放大器设计使包装变小,罗斯蒙特3051 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
EJA440A压力变送器
C膜盒 D膜盒
测量范围 -0.1~32MPa
(-15~4500psi) -0.1~50MPa
(-15~7200psi)
测量量程 5~32MPa
(720~4500psi) 5~50MPa
(720~7200psi)
精度 ±0.12% ±0.12%
防护等级 IP67,NEMA 4X,和JIS C0920防浸型
防爆规格 FM,CENELEC ATEX,CSA,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)
罗斯蒙特 最大过压 48MPa (6750psig) 60MPa (8500psig)
安装 2-inch管安装
接液部件材质 膜盒 SUS316L (膜片: 哈氏合金C-276)
容室法兰 SUS316
外壳 铝合金或SUS316不锈钢(可选)
产品图片2