3051CD Water Pressure Transmitter
Introduction:
The Rosemount 3051CD is a high-performance differential pressure transmitter designed for precise measurement in applications like water pressure monitoring, flow, and level control. It’s part of Emerson’s 3051 series and is widely used in industries such as water treatment, chemical processing, and energy.
Technical Parameters:
| Model |
Measurement Type |
Mounting Style |
Accuracy |
Turndown Ratio |
Output Options |
Best For |
| 3051CD |
Differential Pressure |
Coplanar™ |
±0.04% of span |
Up to 150:1 |
4–20 mA HART®, Fieldbus, PROFIBUS®, WirelessHART® |
Water, flow, and level applications |
| 3051CG |
Gauge Pressure |
Coplanar™ |
±0.04% of span |
Up to 150:1 |
Same as above |
Tank pressure, pump discharge |
| 3051CA |
Absolute Pressure |
Coplanar™ |
±0.04% of span |
Up to 150:1 |
Same as above |
Vacuum systems, sealed tanks |
| 3051T |
Gauge/Absolute Pressure |
In-Line |
±0.065% of span |
Up to 20:1 |
4–20 mA HART®, Fieldbus, PROFIBUS® |
Compact installations, pipe mounting |
| 3051S |
Differential / Gauge / Absolute |
Coplanar™ |
±0.025% of span |
Up to 200:1 |
Same as above + Advanced Diagnostics |
High-accuracy, SIL-rated applications |
Key Differentiators
• 3051CD: Ideal for differential pressure in water systems, with excellent stability and diagnostics.
• 3051T: More compact, but lower accuracy and turndown—better for simpler setups.
• 3051S: Premium model with SuperModule™ platform, 200:1 turndown, and SIL2/3 certification for safety-critical environments.
Product Selection :
| 5 |
Coplanar electroplated carbon steel SST electroplated carbon steel |
-- |
-- |
-- |
| 2 |
Coplanar SST SST SST |
-- |
-- |
-- |
| 3(2) |
Coplanar Hastelloy C Hastelloy C Hastelloy C |
-- |
-- |
-- |
| 4 |
Coplanar Monel Monel Monel |
-- |
-- |
-- |
| 8(2) |
Coplanar electroplated carbon steel, Hastelloy C, electroplated carbon steel |
-- |
-- |
-- |
| 7(2) |
Coplanar SST Hastelloy C SST |
-- |
-- |
-- |
| 0 |
Alternative flange - see options H2H3H4H7F1F2G1G2FAFBFCFD or S5 |
|
|
|
| code |
Isolation Diaphragm |
CD |
CG |
CA |
| 5 |
316L SST |
-- |
-- |
-- |
| 2 |
Hastelloy C-276 |
-- |
-- |
-- |
| 3(2) |
Monel |
-- |
-- |
-- |
| 4 |
Tantalum (only applicable to 3051CD and CG models, range 2-5. Not applicable to 3051CA model) |
-- |
-- |
-- |
| 5 |
Gilded Monel |
-- |
-- |
-- |
| 6 |
|
|
|
|
| code |
0-type ring |
CD |
CG |
CA |
| A |
Glass-filled tetrafluoroethylene (TFE) |
-- |
-- |
-- |
| B |
Graphite-filled tetrafluoroethylene (TFE) |
-- |
-- |
-- |
| code |
Fill liquid |
CD |
CG |
CA |
| 1 |
silicone oil |
-- |
-- |
-- |
| 2 |
Inert liquid (halogenated hydrocarbon) |
-- |
-- |
-- |
| code |
Shell material, conduit inlet size |
CD |
CG |
CA |
| A |
Aluminum, coated with polyurethane coating 1/2-14NPT |
-- |
-- |
-- |
| B |
Aluminum, coated with polyurethane M2x1.5 (CM20) |
-- |
-- |
-- |
| C |
Aluminum, coated with polyurethane PG13.5 |
-- |
-- |
-- |
| D |
Aluminum, coated with polyurethane G 1/2 |
-- |
-- |
-- |
| J |
SST 1/2-14NPT |
-- |
-- |
-- |
| K |
SST M2x1.5 (CM20) |
-- |
-- |
-- |
| L |
SST PG13.5 |
-- |
-- |
-- |
Applications
1. Water & Wastewater Applications
The 3051CD ensures smooth system operation by monitoring filter condition, providing accurate pump discharge pressure readings, and enabling precise level measurement in tanks through hydrostatic pressure detection.
2. Energy & Power Generation
It supports key control points such as boiler drum levels and feedwater flow, delivering stable pressure readings critical to safety and efficiency in utility operations.
3. Oil & Gas Operations
In upstream and midstream processes, the transmitter monitors pressure across separators, flow elements, and wellheads, even in rugged environments requiring long-term stability.
4. Chemical Processing
From reactor pressure control to distillation column monitoring, the 3051CD provides dependable differential pressure measurements vital for maintaining product quality and safety compliance.
5. Pharmaceutical & Life Sciences
It helps maintain critical conditions in cleanrooms and bioreactors by offering responsive pressure and level control that supports both batch and continuous production.
6. Food & Beverage Production
In hygienic systems such as Clean-In-Place (CIP) processes, the transmitter measures fluid pressure and tank level to support consistent product handling and sanitation.
7. Core Functional Roles
Across all sectors, the 3051CD excels in flow calculation using orifice plates or venturis, tank level monitoring via hydrostatic pressure, and early detection of filter blockages or impulse line issues to minimize unplanned downtime.
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