Yokogawa EJX438A Diaphragm Sealed Gauge Pressure Transmitter
Diaphragm seal is used to prevent process medium form entering directly into the pressure-sensing assembly of the pressure transmitter, it is connected to the transmitter using capillary flled with fill fluid.
EJX438A Diaphragm Sealed Gauge Pressure Transmitters can be used to measure liquid, gas, or steam pressure. EJX438A outputs a 4 to 20 mA DC signal corresponding to the measured pressure. It also features quick response, remote setup and monitoring via BRAIN or HART communications, and diagnostics and optional status output for pressure high/low alarm.
The multi-sensing technology provides the advanced diagnostic function to detect such abnormality as an impulse line blockage. FOUNDATION Fieldbus and PROFIBUS PA protocol types are also available.
All EJX series models in their standard confguration, with the exception of the Fieldbus and PROFIBUS types, are certifed by TÜV as complying with SIL 2 for safety requirement.
SPECIFICATIONS
| |
EJX438A Diaphragm Sealed Gauge Pressure Transmitter |
| A Capsule |
B Capsule |
B Capsule |
| (Flush type) |
(Extended type) |
| Range |
-0.1 to 3.5 MPa |
-0.1 to 16 MPa |
-0.1 to 7 MPa |
| (-14.5 to 500 psi) |
(-14.5 to 2300 psi) |
(-14.5 to 1000 psi) |
| Span |
0.035 to 3.5 MPa |
0.16 to 16 MPa |
0.16 to 7 MPa |
| (5 to 500 psi) |
(23 to 2300 psi) |
(23 to 1000 psi) |
| Accuracy |
±0.15% |
±0.15% |
±0.15% |
| Degrees of protection |
IP67, NEMA 4X, and JIS C0920 immersion proof |
| Certificates |
FM, CENELEC ATEX, CSA, IECEx |
| Output |
4 to 20 mA DC or FOUNDATION™ fieldbus, 2-wire system with digital communication |
| Supply voltage |
BRAIN and HART:10.5 to 42 V DC |
| (10.5 to 30 V DC for Intrinsically safe type) |
| Fieldbus:9 to 32 V DC |
| (9 to 24 V DC for Entity and 9 to 17.5 V DC for FISCO) |
| Ambient temperature |
-40 to 60 deg C (-40 to 140 deg F) (general use type) |
| -30 to 60 deg C (-22 to 140 deg F) (with integral indicator) |
| It must be within the fill fluid operating temperature range. |
| Process temperature |
-50 to 310 deg C (-58 to 590 deg F) |
| It must be within the fill fluid operating temperature range. |
| Maximum working pressure |
Max. measurement valve |
| The working pressure must be with in the flange rating. |
| Mounting |
Transmitter: 2-inch pipe mounting |
| Diaphragm seals: flange mounting |
| Process flange size |
Flush type: |
3-inch (80 mm), 2-inch (50 mm), |
|
| 1 1/2-inch (40 mm) |
|
| Extended type: |
4-inch (100 mm), 3-inch (80 mm) |
|
| Diaphragm material |
SUS316L, Hastelloy C-276, Tantalum, Titanium |
| Process flange material |
S25C, SUS304, SUS316 |
| Housing |
Cast aluminum alloy |
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We mainly supply Yokogawa flow meters, Emerson 475 field communicator, Emerson AMS Trex Device communicator, Siemens pressure transmitter, Honeywell transmitter, and the Honeywell BW gas analytics.
Wuhan Xieyuan Automation Equipment Co., Ltd
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