EJA118隔膜密封式差壓變送器
EJA118隔膜密封式差壓變送器
EJA118W、EJA118N和EJA118Y型隔膜密封式差壓變送器可用於測量液體、氣體或蒸汽的流量，以及液位、密度和壓力。
產品信息
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密封隔膜是用於防止過程介質直接進入差壓變送器的壓力傳感器組件中，它們是通過注滿流體的毛細管與變送器連接的。 |
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EJA係列支持BRAIN、HART和FOUNDATION™現場總線或PROFIBUS PA通信協議。 |
特性
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**的性能和穩定性 |
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EJA係列采用單晶矽諧振式傳感器技術。單晶矽對於壓力或溫度的變化不存在滯後現象，是非常理想的材料。單晶矽諧振式傳感器將過壓、溫度變化和靜壓影響降為*低，從而提供****的長期穩定性。 |
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小型輕量設計 |
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由於采用ASIC放大器設計使包裝變小，以及膜盒構造和法蘭的小型化，這款機型的重量降到了原有機型的一半。ASIC設計不僅減少了零件數量，而且提高了放大器的可靠性。 |
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現場總線通信能力 |
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現場總線是雙向數字通信係統，是配置儀表控製係統的革新技術，同時也是前景很好的更新換代產品，用於替換現在現場儀表中廣泛使用的標準4~20mA模擬通信。 |
規格
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EJA118W / EJA118N / EJA118Y |
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M膜盒 |
H膜盒 |
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測量範圍 |
-100~100kPa |
-500~500kPa |
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測量量程 |
2.5~100kPa |
25~500kPa |
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精度 |
±0.2% |
±0.2% |
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防護等級 |
IP67，NEMA 4X，和JIS C0920防浸型 |
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防爆規格 |
FM，CENELEC ATEX，CSA，TIIS，IECEx |
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輸出信號 |
4~20mA DC或FOUNDATION™現場總線或PROFIBUS PA兩線製數字通信 |
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電源 |
BRAIN和HART:10.5~42V DC (本安型: 10.5~30V DC) |
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環境溫度 |
-40~60℃ (-40~140℉) (普通型) |
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過程溫度 |
-50~300℃ (-58~572℉) |
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*大工作壓力 |
法蘭額定壓力 |
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安裝 |
變送器: 2-inch管安裝 |
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法蘭尺寸 |
平法蘭型: 3-inch(80mm)，2-inch(50mm)
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膜片材質 |
SUS316L，哈氏合金C-276，鉭材，鈦材 |
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法蘭材質 |
S25C，SUS304，SUS316 |
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外殼 |
鋁合金或SUS316不鏽鋼(可選) |
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產品選型
產品係列 EJA118W [Flange size : 3-inch (80 mm)]
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產品係列 |
型號代碼 |
描述 |
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EJA118W |
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Diaphragm sealed 差壓變送器 (Flush diaphragm type) |
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輸出信號 |
-D . . . . -E . . . . . . . . . . . . . . . . . . -F . . . . . . . . . . . . . . . . . . -G . . . . . . . . . . . . . . . . . . . |
4-20mA 信號輸出（BRAIN協議） 4 to 20 mA DC with digital communication (HART protocol) *1 Digital communication (FOUNDATION Fieldbus protocol) *6 Digital communication (PROFIBUS PA protocol) *10 |
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測量範圍（壓力）
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M . . . . . . . . . . . . . . . . H . . . . . . . . . . . . . . . . |
2.5 to 100 kPa {250 to 10000 mmH2O}{10 to 400 inH2O}{25 to 1000 mbar} 25 to 500 kPa {0.25 to 5 kgf/cm2}{100 to 2000 inH2O}{250 to 5000 mbar} |
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部件材料*8 |
S# . . . H# . . . T . . . . U . . . . . . . . . . . |
[Diaphragm] [Others] JIS SUS316L JIS SUS316L *11 哈氏合金 C-276 *9 哈氏合金 C-276 *9 鉭 鉭 Titanium Titanium |
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Process flange rating |
J1 . .. . . . . . J2 . . . J4 . . . A1 . . . . . . . . . . . . . A2 . . . . . . . . . . . . . . . A4 . . . . . . . . . . . . . . . . D2 . . . . . D4 . . . . . D5 . . . . |
JIS 10K JIS 20K JIS 40K ANSI Class 150 P1 . . . . . . . . . . JPI Class 150 ANSI Class 300 P2 . . . . . . . . . . JPI Class 300 ANSI Class 600 P4 . . . . . . . . . . JPI Class 600 DIN PN10/16 DIN PN25/40 DIN PN64 |
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Process flange 6 size / material |
D . . E . . . F . . . |
3-inch (80 mm) / JIS S25C 3-inch (80 mm) / JIS SUS304 *12 3-inch (80 mm) / JIS SUS316 *13 |
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Cover flange bolts material 6 |
A . . . B . |
JIS SCM435 JIS SUS630 |
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Fill fluid 6 |
-A *2. . . . . . . . . . . . . . . . . -B . . . . . . . . . . . . . . . . . . -C *3. . . . . . . . . . -D *4. . . . . . . . . . . -E . . . . . . . . . . . . . . . . |
[Process temp.] [Ambient temp.] For general use (silicone oil) -10 to 250 °C -10 to 60 °C For general use (silicone oil) -30 to 180 °C -15 to 60 °C For high temperature use (silicone oil) 10 to 300 °C 10 to 60 °C For oil-prohibited use (fluorinated oil) -20 to 120 °C -10 to 60 °C For low temperature use (ethylene glycol) -50 to 100 °C -40 to 60 °C |
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A . . |
Always A |
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Capillary length (m) |
□ □ *5. . . . . . . . . . |
Specify capillary length from 1 to 10m in □ □. (Example for 2 m : 02) |
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Installation |
-9 . . . . . . . |
Horizontal impulse piping type, left side high pressure |
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電氣連接 6 |
0 . . 2 . . . . . . . . 3 . . . . . . . 4 . . . . . . . 5 . . . . . . . . 7 . . . . . . . . 8 . . . . . . . . 9 . . . . . . . . A . . . . . . . . C . . . . . . . . D . . . . . . |
G1/2 female, one 電氣連接 1/2 NPT female, two 電氣連接s without blind plug Pg 13.5 female, two 電氣連接s without blind plug M20 female, two 電氣連接s without blind plug G1/2 female, two 電氣連接s and a blind plug 1/2 NPT female, two 電氣連接s and a blind plug Pg 13.5 female, two 電氣連接s and a blind plug M20 female, two 電氣連接s and a blind plug 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 |
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顯示麵板
6 |
D . . . E . . . N . .. . |
Digital indicator 與範圍設定開關數字指示器 *7 (None) |
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安裝支架 6 |
A . . . . . . . . . B . . . . . . . . . J . . . . . . . . . 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) (None) |
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Optional codes |
/□ 可選範圍 |
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The ‘6’ marks indicate the most typical selection for each specification. Example: EJA118W-DMSA1DA-AA02-92NA/□
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: In case of 部件材料code T (鉭), the process temperature limit is -10 to 200 °C.
*3: 部件材料code T (鉭) cannot be applied.
*4: Even in case where Fill fluid code D (fluorinated oil) is selected, if degrease cleansing treatment or both degrease cleansing and dehydrating treatment for the wetted parts is required, specify Optional code K1 or K5.
*5: In case of 部件材料code H (哈氏合金 C), T (鉭), and U (Titanium) or Fill fluid code C (for high temperature use), specify capillary length from 1 to 5 m.
*6: Refer to GS 01C22T02-00E for Fieldbus communication.
*7: Not applicable for 輸出信號 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 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.
