Newsletter
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1、Introduction
Yokogawa EJA210A and Vokogawa EJA220A flange installation type differential pressure transmitter used to measure the liquid containing solid and precipitation and the liquid level and density of steam, then transform it into a 4-20 madc current signal output. Yokogawa EJA210A and yokogawa EJA220A can also through the BRAIN hand operator or CENTUM CS/mu XL or rosemount HART 475 hand operator mutual communication,through them to set and monitor, etc.
| Application | type | Model | diaphragm capsule | Measurement(KPa) | The maximum |
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Opening level, Closed container |
Flat diaphragm |
EJA210A EJA220A |
M | 1-100 | Based on the flange specifications |
| Convex diaphragm | H | 5-500MPa |
| EJA210A / EJA220AFlange Mounted Differential PressureTransmitters | ||
| M diaphragm capsule | H diaphragm capsule | |
| Measurement span |
-100~100kPa
(-400~400inH2O)
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-500~500kPa
(-2000~2000inH2O)
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| Measurement range |
1~100kPa
(4~400inH2O)
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5~500kPa
(20~2000inH2O)
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| Accuracy | ±0.2% | ±0.2% |
| Level of Protection | IP67，NEMA 4X，JIS C0920 The immersion type | |
| explosion-proof | FM，CENELEC ATEX，CSA，IECEx | |
| Output Signal | 4~20mA DC or FOUNDATION™ fieldbus PROFIBUS PA two wire system of digital communication | |
| Power |
BRAI and HART:10.5~42V DC (intrinsic safety type: 10.5~30V DC) Fieldbus:9~32V DC (intrinsic safety typeEntitym model9~24V DC，intrinsic safety typeFISCO model9~17.5V DC) |
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| Environment Temperature |
-40~85℃(-40~185℉) (Normal) -30~80℃(-22~176℉) (Built-in indicator in) |
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| Process Temperature | -40~120℃(-40~248℉) (Normal) | |
| The maximum pressure | Flange pressure rated | |
| Installation | Flange installation | |
| Flange size |
EJA210A: 3-inch (80mm)，2-inch (50mm) EJA220A: 4-inch (100mm)，3-inch (80mm) |
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Diaphragm material
(high side)
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SUS316L，HastelloyC-276，Tantalum material, Titanium | |
| The flange material | S25C，SUS304，SUS316 | |
| Shell | Aluminum alloy or SUS316 stainless steel (optional) | |
| Output Signal |
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| -G | Digital communication (PROFIBUS PA protocol, refer to GS 01C22T03-00E) | |||||||||||||||||
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Measurement span
(capsule)
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High pressure side (Process flange side) wetted parts material*1*3 |
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| Process flange rating |
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Process flange
size / material
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Low pressure side process connection |
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| Bolts and nuts material |
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| Installation |
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| Electrical connection |
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| A | G1/2 female, two electrical connections and a SUS316 blind plug | |||||||||||||||||
| C | 1/2 NPT female, two electrical connections and a SUS316 blind plug | |||||||||||||||||
| D | M20 female, two electrical connections and a SUS316 blind plug | |||||||||||||||||
| Integral indicator |
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| - |
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The‘☆’marks indicate the most typical selection for each specification. Example: EJA210A-DMSA1D5A-92NN/ The ‘#’marks indicate the construction materials conform to NACE material recommendations per MR01-75. For the use ofSUS316 material, there may be certain limitations for pressure and temperature. Please refer to NACE standards for details.
*1：Low pressure side wetted parts material: Cover flange; SCS14A, Process connector;
SCS14A,Capsule;SUSF316L, SUS316L or ASTM grade 316L (Diaphragm; Hastelloy C-276 or ASTM N10276), Vent plug;SUS316 or ASTMgr ade 316
*2：Not applicable for Output signal code F and G.
*3：Users must consider the characteristics of selected wetted parts material and the influence of process fluids.The use of inapp ropri-ate materials can result in the leakage of corrosive process fluids and cause injury to personnel and/or damage to plant facilities. Itis also possible that the diaphragm itself can be damaged and that material from the broken diaphragm and the fill fluid cancontaminate 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.
*4：Hastelloy C-276 or ASTM N10276.
*5：SUS316 or ASTM grade 316.
*6：SUS304 or ASTM grade 304. Forged version may be used.
*7：SUS316 or ASTM grade 316. Forged version may be used.
EJA110A Differential pressure transmitter/EJA118W/EJA118Y/EJA118N Double flanges differential pressure transmitter/EJA120A micro differential pressure transmitter/ EJA130A High performance differential pressure transmitter/EJA210A/EJA220A Flange Mounted Differential Pressure Transmitter/ EJA310A Absolute Pressure Transmitter/ EJA430A Gauge Pressure Transmitter/ EJA438W and EJA438N Diaphragm Sealed Gauge Pressure Transmitters/ Model EJA440A High Pressure Transmitter/EJA510A and EJA530A Absolute and Gauge Pressure Transmitters/Model EJX110A Differential pressure transmitter/EJX118W Diaphragm Sealed Differential Pressure Transmitters/EJX210A Flange Mounted Differential Pressure Transmitter/EJX430A Gauge pressure transmitter/ EJX438A Diaphragm seal pressure transmitter/EJX910A Multivariable Pressure Transmitter
