EJA120A差压变送器|EJA120A差压传感器|EJA120A - 压力变送器|差压变送器|变送器|液位变送器

销售热线：029-86693538

EJA120A型高性能的微差压变送器用于测量微小差压，然后将其转变成4~20mA DC的电流信号输出。

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

-	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。

		EJA120A微差压变送器
		E膜盒
测量范围		-1~1kPa(-4~4inH2O)
测量量程		0.1~1kPa(0.4~4inH2O)
精度		±0.2%
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		-25~80℃(-13~176℉)
过程温度		-25~80℃(-13~176℉)
最大工作压力		50kPa (7.25psi)
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)

型号选型

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-DES5A-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.

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

*6: 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.

*7: SUS316 or ASTM grade 316.