EJX120A微差壓變送器
EJX120A型高性能微差壓變送器采用單晶硅諧振式傳感器技術，適用于液體、氣體或蒸汽的流量以及液位、密度和壓力測量。
多傳感器技術提供的診斷功能，可以檢測脈沖線路堵塞或伴熱管道的破損等異常。
EJX系列支持BRAIN、HART和FOUNDATION™現場總線通信協議。
規格
EJX120A微差壓變送器
E膜盒
測量范圍
-1~1kPa(-4~4inH2O)
測量量程
0.025~1kPa(0.1~4inH2O)
精度
±0.09%
防護等級
IP67，NEMA 4X和JIS C0920防浸型
防爆規格
FM，CENELEC ATEX，CSA，IECEx
輸出信號
4~20mA DC或FOUNDATION™ 現場總線，兩線制數字通信
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)
環境溫度
-25~80℃ (-13~176℉) (普通型)
過程溫度
-25~80℃ (-13~176℉) (普通型)
zui大工作壓力
50kPa(7.25psi)
安裝
2-inch管安裝
接液部件材質
膜盒
316L SST(膜片: 哈氏合金C-276)
容室法蘭
ASTM CF-8M
外殼
鋁合金或ASTM CF-8M不銹鋼(可選)
n 產品選型
產品系列
型號代碼
描述
EJX120A
. . . . . . . . . . . . . .
差壓變送器
輸出信號
-D . . . . . . . . . . . .
-E . . . . . . . . . . . .
-F . . . . . . . . . . . .
4-20mA 信號輸出（BRAIN協議）
4 to 20 mA DC with digital communication (HART protocol)
Digital communication (FOUNDATION Fieldbus protocol, refer to GS 01C25T02-01EN)
測量范圍（壓力）
E . . . . . . . . . . . .
0.025 to 1 kPa (0.1 to 4 inH2O)
部件材料*2
¨ . . . . . . . . . .
Refer to “Wetted Parts Material” Table below.
過程連接
?
0 . . . . . . . . . . . . . . . .
1 . . . . . . . . . . . . . . . . . . . . . .
2 . . . . . . . . . . . . . . . . . . . . . .
3 . . . . . . . . . . . . . . . . . . . . . .
4 . . . . . . . . . . . . . . . . . . . . . .
5 . . . . . . . . . . . . . . . . . . . . . .
無過程連接
(Rc1/4 female on the cover flanges) with Rc1/4 電氣過程連接
with Rc1/2 電氣過程連接
with 1/4 NPT 電氣過程連接
with 1/2 NPT 電氣過程連接
無過程連接 (1/4 NPT female on the cover flanges)
螺栓和螺母的材料
J . . . . . . . .
G. . . . . . . . .
C. . . . . . . . .
B7 carbon steel
316L SST
660 SST
Installation
?
-7 . . . . . . . . . . . . . .
-8 . . . . . . . . . . . . . .
-9 . . . . . . . . . . . . . .
-U . . . . . . . . . . . . . .
Vertical piping, left side high pressure, and process connection downside
Horizontal piping and right side high pressure
Horizontal piping and left side high pressure
Universal flange
Amplifier housing
1 . . . . . .
3 . . . . . . . . . . . . .
2 . . . . . .
Cast aluminum alloy
Cast aluminum alloy with corrosion resistance properties*5
ASTM CF-8M stainless steel*3
電氣連接
?
0 . . . . .
2 . . . . . . . . . . .
4 . . . . . . . . . . .
5 . . . . .
7 . . . . . . . . . . .
9 . . . . .
A. . . . . . . . . . .
C. . . . . . . . . . .
D. . . . . . . . . . .
G1/2 female, one 電氣連接 without blind plugs
1/2 NPT female, two 電氣連接s without blind plugs M20
female, two 電氣連接s without blind plugs G1/2 female, two
電氣連接s and a blind plug*4
1/2 NPT female, two 電氣連接s and a blind plug*4 M20 female,
two 電氣連接s and a blind plug*4
G1/2 female, two 電氣連接s and a SUS316 blind plug
1/2 NPT female, two 電氣連接s and a SUS316 blind plug M20
female, two 電氣連接s and a SUS316 blind plug
顯示面板
?
D. . . .
E . . . .
N. . . .
Digital indicator
與范圍設定開關數字指示器*1
None
Mounting bracket ?
B. . . . . .
D. . . . . .
J . . . . . .
K. . . . . .
N. . . . . .
304 SST 2-inch pipe mounting, flat type (for horizontal piping)
304 SST 2-inch pipe mounting, L type (for vertical piping)
316 SST 2-inch pipe mounting, flat type (for horizontal piping)
316 SST 2-inch pipe mounting, L type (for vertical piping)
None
Optional Codes
¨/ 可選范圍
The “?” marks indicate the most typical selection for each specification.
*1: Not applicable for 輸出信號 code F.
*2: Users must consider the characteristics of selected 部件材料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.
*3: Not applicable for 電氣連接 code 0, 5, 7 and 9.
*4: Material of a blind plug is aluminum alloy or 304 SST.
*5: Not applicable for 電氣連接 code 0, 5, 7, 9 and A. Content rate of copper in the material is 0.03% or less and content rate of iron is 0.15% or less.
Table. Wetted Parts Materials
部件材料code
Cover flange and process connector
Capsule
Capsule gasket
Drain/孔塞
S #
ASTM CF-8M *1
哈氏合金 C-276 *2 (Diaphragm) F316L SST (Others)
PTFE Teflon
316 SST
*1: Cast version of 316 SST. Equivalent to SCS14A.
*2: 哈氏合金 C-276 or ASTM N10276.
*3: 316L SST, F316L SST.
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