Process Control Analog Input Solution – Emerson UNI1402 | DeltaV Series
Where This Product Is Used
The Emerson UNI1402 is a universal analog input module engineered for the Emerson DeltaV Distributed Control System (DCS). It is widely deployed across industries where precise, reliable signal acquisition is mission-critical:
- Oil & Gas: Upstream wellhead monitoring, midstream pipeline pressure/flow measurement, and downstream refinery process loops.
- Chemical & Petrochemical: Reactor temperature profiling, distillation column level control, and feed-forward control strategies.
- Power Generation: Boiler drum level, turbine inlet temperature, and combustion air flow measurement.
- Pulp & Paper / Water Treatment: pH, conductivity, and dissolved oxygen monitoring via 4–20 mA transmitters.
- Pharmaceutical & Food & Beverage: CIP/SIP temperature validation and batch process variable acquisition.
Technical Specifications
| Part Number | UNI1402 |
| Manufacturer | Emerson Electric / Emerson Automation Solutions |
| Series | DeltaV S-Series / M-Series Analog I/O |
| Module Type | Universal Analog Input |
| Input Channels | 8 channels (configurable per channel) |
| Signal Types Supported | 4–20 mA, 1–5 V, RTD (Pt100/Pt1000), Thermocouple (J, K, T, E, R, S, B), mV, Ω |
| Resolution | 16-bit ADC |
| Accuracy | ±0.1% of full scale (typical) |
| Isolation | Channel-to-channel and channel-to-bus isolation |
| Bus Interface | DeltaV I/O bus (proprietary backplane) |
| Power Supply | Supplied via DeltaV carrier/backplane |
| Operating Temperature | 0°C to +60°C |
| Humidity | 5% to 95% RH, non-condensing |
| Weight | Approx. 450 g |
| Mounting | DeltaV I/O carrier (8-slot or 4-slot) |
| HART Support | HART pass-through (per channel) |
Why Engineers Specify This Model
- Universal Input Flexibility: A single module handles mA, voltage, RTD, thermocouple, and resistance inputs — eliminating the need for separate module types per signal.
- HART Pass-Through: Enables remote device diagnostics and configuration without breaking the 4–20 mA loop, reducing maintenance downtime.
- Hot-Swap Capable: Modules can be replaced under power on a live DeltaV carrier, supporting zero-downtime maintenance in continuous-process plants.
- Tight DeltaV Integration: Natively recognized by DeltaV Explorer; auto-configuration and AMS Device Manager integration are supported out of the box.
- High Channel Density: 8 configurable channels per module maximize carrier utilization and reduce cabinet footprint.
- Proven Field Reliability: Emerson DeltaV I/O modules are installed in thousands of facilities globally with documented MTBF exceeding 10 years in typical process environments.
Complete System Bill of Materials
For a fully operational DeltaV analog input subsystem, the following components are typically required alongside the UNI1402:
- DeltaV I/O Carrier (8-slot) – e.g., VE4002S2T2B4
- DeltaV Controller – e.g., MD Plus Controller or M5+ Controller
- DeltaV Power Supply – e.g., PS2 or PS6
- DeltaV Workstation / DeltaV Pro+ Engineering Station
- Field junction box with terminal blocks (for 4–20 mA field wiring)
- HART Multiplexer (optional, if centralized HART management is required)
Contact [email protected] for complete system quotations and BOM verification.
Compliance & Industry Standards
- CE Marking – EU Machinery and EMC Directives
- UL Listed – UL 508 Industrial Control Equipment
- IEC 61131-2 – Programmable Controllers: Equipment Requirements and Tests
- IEC 61508 / SIL – Functional Safety (consult Emerson SIL documentation for specific SIL rating)
- ATEX / IECEx – Intrinsically safe field devices may be connected; module itself is non-incendive rated for Zone 2 applications (verify with Emerson datasheet)
- RoHS Compliant
Quality Assurance & Sourcing
Konmask.com sources the Emerson UNI1402 exclusively through verified industrial automation distributors and authorized channel partners. Every unit undergoes the following before dispatch:
- Visual inspection for physical damage, label integrity, and firmware revision verification
- Functional power-on test where applicable
- Anti-static packaging with humidity indicator card
- Traceability documentation (lot number, date code) provided on request
We do not source from grey-market or unverified secondary channels. All products carry a 12-month Konmask warranty against defects in materials and workmanship.
How to Source This Part
- In Stock: Add to cart and proceed to checkout. Lead time: 1–3 business days for standard shipping.
- Bulk / Project Orders: Email [email protected] with your BOM for volume pricing and project scheduling.
- Urgent / Emergency Replacement: Call or WhatsApp +0086 19859288691 for same-day quotation on critical spares.
- Cross-Reference / Substitution: If you need an equivalent or compatible module, our engineers can advise on approved alternatives within the DeltaV I/O family.
Application-Specific FAQ
Q: Can the UNI1402 accept thermocouple inputs directly without a separate transmitter?
A: Yes. The UNI1402 supports direct thermocouple connection (J, K, T, E, R, S, B types) with cold-junction compensation handled internally by the module.
Q: Is the UNI1402 compatible with both DeltaV S-Series and M-Series controllers?
A: The UNI1402 is designed for the DeltaV I/O bus architecture. Compatibility depends on the specific carrier and controller generation — contact us to confirm compatibility with your existing DeltaV revision.
Q: Can I replace a UNI1402 while the plant is running?
A: Yes, DeltaV I/O modules support hot-swap on a powered carrier. The controller will automatically re-commission the replacement module. Always follow your site’s MOC (Management of Change) procedure.
Q: Does the module support HART revision 5, 6, and 7?
A: HART pass-through is supported; the specific HART revision compatibility depends on the DeltaV system firmware version. Emerson recommends DeltaV v13.3 or later for full HART 7 support.
Q: What is the maximum cable length for 4–20 mA field wiring?
A: Emerson recommends a maximum loop resistance (cable + termination) within the transmitter’s drive capability, typically up to 600–900 Ω. Cable length depends on wire gauge; 24 AWG shielded twisted pair up to 300 m is common practice.
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