Rosemount 2051CD2A02A1AS3I1M5 405PS100N065D3H Differential Pressure Transmitter | Replacement, Equivalent & Selection Guide
The Rosemount 2051CD2A02A1AS3I1M5 405PS100N065D3H is a high-performance differential pressure transmitter from Emerson’s industry-leading 2051 series. Designed for demanding process environments, it delivers accurate, reliable pressure measurement with HART communication and a robust stainless-steel wetted construction. This page provides full technical specifications, compatible replacement models, a structured selection guide, and sourcing information to help engineers and procurement teams make confident decisions.
Technical Specifications
- Model: 2051CD2A02A1AS3I1M5
- Option Code: 405PS100N065D3H
- Type: Differential Pressure Transmitter (2051CD)
- Measurement Range: Range 2 — 0.25 to 250 inH₂O (0.062 to 62.3 kPa)
- Output Signal: 4–20 mA HART (analog + digital)
- Process Connection: 1/4–18 NPT, coplanar flange
- Wetted Materials: 316L SST diaphragm, SST process flange
- Fill Fluid: Silicone (standard)
- Housing: Low-copper aluminum alloy, dual-compartment
- Conduit Entry: 1/2–14 NPT
- Accuracy: ±0.065% of span (reference accuracy)
- Stability: ±0.125% URL for 10 years
- Operating Temperature: –40 to 85°C (–40 to 185°F)
- Process Temperature Limit: –40 to 121°C (–40 to 250°F)
- Static Pressure Limit: 3,626 psi (25 MPa)
- Overpressure Limit: 3,626 psi (25 MPa)
- Power Supply: 10.5–42.4 VDC (HART)
- Approvals: FM, CSA, ATEX, IECEx (intrinsically safe & explosion-proof options)
- Weight: ~1.5 kg
- Mounting: 2-inch pipe or panel mount (with optional bracket)
Compatible Replacement & Equivalent Models
The following models are functionally compatible or serve as direct/near-direct replacements for the Rosemount 2051CD2A02A1AS3I1M5. Always verify process conditions, flange compatibility, and communication protocol before substituting.
- Rosemount 2051CD3A02A1AS3I1M5 — Range 3 variant (0.5–500 inH₂O); same platform, wider span
- Rosemount 3051CD2A02A1AS3I1M5 — 3051 series upgrade; enhanced diagnostics, same coplanar flange
- Rosemount 3051S2CD2A02A1AS3I1M5 — 3051S SuperModule; superior accuracy (±0.025%), same footprint
- Yokogawa EJA110E-DMS5A-92NN — Equivalent DP transmitter; HART, coplanar flange, SST wetted parts
- Honeywell STD800 STD820-E1AC4AS — SmartLine DP; HART/FF, coplanar-compatible, similar range
- ABB 266DSH — Equivalent DP transmitter; HART, coplanar flange, SST diaphragm
- Endress+Hauser Deltabar PMD75 — DP transmitter; HART/PROFIBUS, comparable accuracy and range
- Siemens SITRANS P DS III 7MF4433 — DP transmitter; HART, coplanar flange, SST wetted
Note: Cross-brand replacements may require adapter flanges or reconfiguration. Contact Konmask for compatibility verification.
Why Choose the Original Model
- Proven field reliability: The Rosemount 2051 series has over 30 years of global deployment in refining, chemical, and power industries.
- Superior accuracy: ±0.065% reference accuracy with 10-year stability guarantee reduces calibration frequency.
- Seamless integration: Native HART protocol ensures plug-and-play compatibility with existing DCS/SCADA infrastructure.
- Coplanar flange design: Reduces leak points and simplifies installation versus traditional 5-valve manifold setups.
- Emerson ecosystem: Full support via AMS Device Manager, Plantweb, and Emerson’s global service network.
- Regulatory compliance: FM/CSA/ATEX/IECEx certifications cover hazardous area installations worldwide.
Typical Applications
- Flow measurement (orifice plate, venturi, pitot tube installations)
- Level measurement in tanks, vessels, and reactors
- Differential pressure monitoring across filters, heat exchangers, and strainers
- Boiler feedwater and steam systems
- Refinery and petrochemical process control
- Pharmaceutical and food-grade process monitoring (with appropriate wetted materials)
- Water and wastewater treatment plants
- Power generation — turbine and condenser DP monitoring
System Compatibility
- DCS Platforms: Emerson DeltaV, Honeywell Experion, ABB 800xA, Yokogawa CENTUM VP, Siemens PCS 7
- SCADA/Asset Management: Emerson AMS Device Manager, FieldCare, PACTware, HART Communicator 475/375
- Communication Protocol: HART 5/7 (4–20 mA analog + digital overlay)
- Manifold Compatibility: Rosemount 305, 306, 304 coplanar manifolds; 3-valve and 5-valve configurations
- Mounting Brackets: Rosemount 305 pipe/panel mount bracket (2-inch pipe)
Selection Guide
Use the table below to identify the correct 2051CD variant for your application:
| Parameter | This Model (2051CD2A02A1AS3I1M5) | Consider Upgrading If… |
|---|---|---|
| Measurement Range | 0.25–250 inH₂O (Range 2) | You need >250 inH₂O → select Range 3 or 4 |
| Accuracy Requirement | ±0.065% of span | Need <0.04% → upgrade to 3051S SuperModule |
| Communication Protocol | HART 4–20 mA | Need FOUNDATION Fieldbus or PROFIBUS → select 2051CF/CP |
| Process Temperature | Up to 121°C | Need >121°C → specify high-temp fill fluid option |
| Hazardous Area | FM/CSA/ATEX/IECEx certified | Already covered — verify specific approval code needed |
| Wetted Material | 316L SST | Corrosive media → specify Hastelloy C-276 or Tantalum diaphragm |
| Static Pressure | Up to 3,626 psi | Higher static → select 2051L or 3051S high-static variant |
Quality Assurance & Sourcing
- Authenticity: All units sourced through authorized distribution channels or verified surplus with full traceability documentation.
- Inspection: Each unit undergoes visual inspection, functional verification, and calibration check prior to shipment.
- Documentation: Factory calibration certificates, material test reports (MTR), and EU Declaration of Conformity available on request.
- Packaging: Original OEM packaging preserved where available; anti-static and moisture-barrier packaging for surplus stock.
- Lead Time: In-stock units ship within 1–3 business days; special orders 2–6 weeks depending on availability.
- Warranty: 12-month warranty against manufacturing defects on all new units.
How to Order
- Confirm the full model number: 2051CD2A02A1AS3I1M5 405PS100N065D3H
- Specify required quantity and delivery timeline.
- Provide end-use application details if requesting a compatibility review.
- Submit your inquiry via the product page, or contact us directly:
- Email: support@konmask.com
- Phone/WhatsApp: +0086 19859288691
- Website: https://Konmask.com
We respond to all inquiries within 1 business day (Mon–Fri, UTC+8).
Replacement & Compatibility FAQ
Q: Can the Rosemount 3051CD directly replace the 2051CD?
A: Yes, the 3051CD uses the same coplanar flange footprint and HART protocol. It is a drop-in replacement with enhanced diagnostics. Reconfiguration via HART communicator is required.
Q: Is the 2051CD2A02A1AS3I1M5 compatible with Yokogawa EJA110E?
A: Functionally equivalent for most DP flow and level applications. The EJA110E uses a coplanar flange but may require a different manifold adapter. Verify bolt pattern and process connection before installation.
Q: What does the option code 405PS100N065D3H mean?
A: The option code specifies factory-configured options including: remote seal type (405), process connection material (PS = 316 SST), fill fluid (100 = silicone), diaphragm material (N = standard), accuracy class (065 = ±0.065%), output (D3 = 4–20 mA HART), and housing option (H = standard).
Q: Can I use this transmitter with a FOUNDATION Fieldbus DCS?
A: No — this model is HART only. For FF, specify the 2051CF variant or upgrade to the 3051S with FF output option.
Q: Do you supply calibration certificates with the unit?
A: Yes. Factory calibration certificates are included with all new units. Recalibration reports are available on request for surplus/refurbished stock.
Q: What is the minimum order quantity?
A: No minimum order quantity. Single units are available. Volume pricing is available for orders of 5+ units.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
