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EJA310A Absolute Pressure Transmitter
Brand: Yokogawa Electric CorporationThe high performance gauge pressure transmitter model EJA310A can be used to measure liquid, gas, or steam pressure.
It outputs a 4 to 20 mA DC signal corresponding to the measured absolute pressure.
Model EJA310A also features remote setup and monitoring through communications with the BRAIN terminal and CENTUM-CS or µXL or HART 275 host.
Features- 0.15% Accuracy (0.075% Option)
- 0.1% Stability
- External Zero Adjust
Specifications
Accuracy
- ± 0.075 % of Span (Including the Effects of Zero-based Linearity, Hysteresis & Repeatability) - when High Accuracy is Specified
- ± 0.15 % of Span (Including the Effects of Zero-based Linearity, Hysteresis & Repeatability)
- ± 0.20 % of Span (Including the Effects of Zero-based Linearity, Hysteresis & Repeatability) - for Capsule L
Adjustment Type
- External Zero Adjustment Screw
Alarm
- Down-Scale: -2.5 %, 3.6 mA DC or Less
- Down-Scale: -5 %, 3.2 mA DC or Less
- Up-Scale: 110 %, 21.6 mA DC or more
Ambient Temperature Range
- -15° C (5° F): Fluoro Rubber O-Ring
- -30° to 80° C (-22° to 176° F) with LCD Display
- -40° to 85° C (-40° to 185° F)
Approvals & Certifications
- ATEX Flameproof & Intrinsically Safe
- CSA Explosion-proof & Intrinsically Safe
- EMC EN 61326-1 Class A, EN 61326-2-3
- FM Explosion-proof & Intrinsically Safe
- IECEx Intrinsically Safe, Typical N & Flameproof Approval
- NAMUR NE43
- PED 97/23/EC
Approvals & Certifications
- Leak Test
- Mill Certificate
- Pressure Test
BSP Connection
- 1/2” BSPT Female
- 1/4” BSPT Female
Cable Material
- Polyethylene Insulated PVC Sheathed
Communication
- BRAIN
- FOUNDATION Fieldbus
- HART
- PROFIBUS PA
Damping Adjustment
- 0.1 to 64 seconds in 9 Increments
- 0.2 to 64 seconds
Diaphragm Material
- Hastelloy C-276
Distance
- 2 Kilometers - Communication
Drain, Vent Valves & Plug
- 316 Stainless Steel
- ASTM Grade 316
Electrical Connectors
- 1/2” NPT Female
- G 1/2” Female
- M20 Female
- PG13.5 Female
Enclosure Finish
- Epoxy Resin-Baked Coating - Painting
- Polyurethane Paint (Munsell 0.6 GY3.1/2.0)
Enclosure, Body Material
- Aluminum Alloy - Copper Cast
- SCS14A Stainless Steel
Environmental Protection
- IP67
- NEMA 4X
Fill Material
- Fluorinated Oil - Fill Fluid
- Silicone
Flange Material
- JIS SUS630
- SCS14A - Cover Flange
Gasket Material
- Fluorinated Rubber - Process Connector Gasket
- PTFE Teflon - Process Connector Gasket
- Teflon-Coated SUS316L - Capsule Gasket
Humidity
- 5 to 100 % Relative Humidity at 40° C (104° F) - Ambient Humidity
Input
- psia: 0.01885 (kPa: 0.13, bar: 0.0013) - Min. Input for Capsule L
- psia: 0.3916 (kPa: 2.7, bar: 0.027) - Min. Input for Capsule M & A
Input Impedance
- 10 kiloohms or more at 2.4 kHz
Length
- 4.6” (119 mm) - Long Vent
Load
- 0 to 1,335 ohms - for Operation
- 0.22 µF or Less - Load Capacitance
- 250 to 600 ohms - for Digital Communication
- 3.3 MH or Less - Load Inductance
Materials of Construction
- SUS304 - Name Plate & Tag
- SUS316 - Name Plate & Tag
Maximum System Pressure
- psi: 652.7 (kPa: 4,500, bar: 45)
Media
- Liquids & Gases
Mounting
- 2” (50.8 mm) Pipe Mounting Bracket
Mounting Position Effect
- Tilting up to 90° will cause Zero Shift up to 0.4 kPa
NACE & NIST
- NACE MR-0175
NPT Connection
- 1/2” NPT Female
- 1/4” NPT Female
Nut & Bolt Material
- SCM435
- SUH660
- SUS630
O-Ring Material
- Buna-N - Cover O-Ring
- Fluororubber - Cover O-Rings
Operating Temperature
- -20° to 80° C (-4° to 176° F)
Output
- 4-20 mA DC (2-Wire) with Digital Communications
Overpressure & Static Pressure Limits
- psi: 645 (MPa: 4.5, bar: 44.47) - Max.
- psi: 72 (kPa: 500, bar: 5) - Max.
Power Supply Effect
- ± 0.005 % Per Volt (21.6-32 Vdc, 350 ohms)
Pressure Range
- bar: 0 to 30
- mmHg: 0 to 960
- MPa: 0 to 3
- psi: 0 to 430
Pressure Type
- Absolute
- Differential
- Gauge
Process Connection Material
- SCS14A
Process Temperature
- -40° to 100° C (-40° to 212° F) - L Capsule
- -40° to 120° C (-40° to 248° F) - M & A Capsules
Response Time
- 0.3 second, Max.
Stability
- ± 0.1 % of URL Per 12 Months
Supply Pressure - Maximum
- psi: 1.47 (kPa: 10, bar: 0.10) - for Capsule L
- psi: 18.65 (kPa: 130, bar: 1.28) - for Capsule M
- psi: 430 (MPa: 3, bar: 29.65) - for Capsule A
Supply Voltage
- 10.5-30 Vdc - for Intrinsically Safe, Typical N, Non-Incendive, or Non-Sparking Typical
- 10.5-32 Vdc - for Lightning Protector
- 10.5-42 Vdc - for General Use & Flameproof Typical
- 16.4 Vdc for Digital Communications, BRAIN & HART
- 24 Vdc Supply, up to 570 ohms Load Can be Used
- 9-32 Vdc - Lighting Protector
Temperature Effect
- ± [0.080 % of Span + 0.008 % of URL] Per 28° C (50° F) - Ambient Temperature Effect for Capsule A
- ± [0.084 % of Span + 0.028 % of URL] Per 28° C (50° F) - Ambient Temperature Effect for Capsule M
- ± [0.095 % of Span + 0.118 % of URL] Per 28° C (50° F) - Ambient Temperature Effect for Capsule L
Update Time
- 0.125 second
Wetted Materials
- SCS14A - Body
- SUS316 - Vent Plug
- SUS316L - Capsule
Zero Offset
- External Zero is Continuously Adjustable with 0.01 % Incremental Resolution of Span
Documentation
Data Sheets
Certificate
Manual
- EJA Series Differential Pressure and Pressure Transmitters Installation Manual *See Manual Change 15-009 16-004 16-018 pdf 4.8 MB
- EJA Series Fieldbus Communication Type *See Manual Change 10-007 12-004 16-004 pdf 1.4 MB
- EJA Series HART Protocol pdf 363 KB
- EJA Series NEPSI Certification [Option code: /NS2 and /NF2 ] pdf 61 KB
- EJA Series PROFIBUS PA Communication Type *See Manual Change 10-007 12-004 16-004 pdf 5.2 MB
- EJA310A, EJA430A and EJA440A Absolute Pressure and Gauge Pressure Transmitters *See Manual Change 16-004 16-018 pdf 5.7 MB
- Manual Change 10-007 12-004 16-004 pdf 293 KB
- Manual Change 16-004 16-018 pdf 232 KB
- Model EJA310A, EJA430A and EJA440A Absolute Pressure and Gauge Pressure Transmitters [SUPPLEMENT] pdf 109 KB